Line Isolation monitor testing and replacement services in Miami
Line Isolation monitor testing and replacement services in Miami

The BiomedRx Service Network is a consortium of independent service organizations (ISOs) that perform maintenance services on medical, scientific laboratory, and medical imaging equipment. We provide service in all 50 US states, and in over 30 other countries.

Our services are ideal for emerging and foreign medical device manufacturers, and those undergoing the FDA 510K process.

We are qualified to perform medical device installation, repair, calibration, and preventive maintenance inspection, in honor of your warranty or service contract relationships.

Our service expertise covers all modalities of diagnostic and therapeutic medical equipment. Including biomedical equipment, scientific laboratory equipment, and medical imaging equipment.

Our biomedical equipment maintenance services include medical equipment installation, repair, calibration, preventive maintenance and electrical safety inspection. We service all modalities of diagnostic and therapeutic medical equipment, scientific laboratory equipment, medical imaging and information technology. Our principals are US Air Force trained BMET's (Biomedical Equipment Maintenance Technicians) who are capable of troubleshooting and repairing any medical device.
BiomedRx provides asset management services for hospitals and other healthcare providers. Our asset management program consists of:
  • Medical equipment repair and maintenance.
  • Inventory control and database maintenance.
  • Scheduling and procedures for Preventive Maintenance, Calibration, and Electrical Safety Inspection of all equipment under contract.
  • Four hour telephone response, and 24 hour in-person response on repair calls.
  • Management of outsourced service relationships.
  • Transitioning outsourced service to in-house responsibility.
  • Service training to in-house biomedical maintenance personnel.
  • Applications assistance and user maintenance training to equipment operators.
  • Impartial assistance in medical equipment purchasing decisions.
  • Cost savings over manufacturer service contracts and extended warranties.
  • Documentation to satisfy Joint Commission, state, and other regulatory requirements.
  • Maximum operational uptime of your medical equipment assets.

  • We also provide support for auxiliary systems, such as isolated power systems and line isolation monitors, which require annual testing and recertification.

    Healthcare providers and organizations benefit greatly from our asset management program. Our program is designed to streamline your healthcare technology management profile, which improves medical equipment serviceability and saves the hospital money.

    We accomplish this by establishing comprehensive database records of equipment inventory, service parts and literature, maintenance procedures and historical maintenance records. We them implement an in-house training program for hospital biomedical equipment maintenance technicians designed to empower them to assume maintenance responsibility for equipment for which maintenance is presently being outsourced. We facilitate the early cancellation and/or renegotiation of service contracts through our ability to provide first-call service response during equipment malfunctions. We guarantee a four-hour response time, and are usually capable of resolving emergency repairs without assistance. In the rare instances where service assistance is needed, the cost of these one-time calls is far less than the cost of an annual service contract.

    Our comprehensive SQL database system maintains inventory control of your medical equipment, spare parts, service literature, specialized tools and test equipment. We maintain accurate and complete preventive maintenance procedures, PM schedules, and historical maintenance records.
    BiomedRx provides annual inspection and recertification if isolated power systems and line isolation monitors. We perform a thorough inspection of your electrical system and line isolation monitor, and provide you with the documentation required to satisfy Joint Commission, NFPA99, and other regulatory requirements. We even provide video documentation of our services. If you have questions about our isolated power system inspection and recertification services, call us today at (424) 204-2382.

    Here is a video documentation of a previous isolated power system inspection performed at the Veterans Administration Hospital, Los Angeles



    Lately there has been controversy in the hospital engineering community concerning the use of isolated power systems and the 2012 changes in the National Fire Protection Association standard, NFPA 99.

    Section 3.3.89 of NFPA99 2012 defines an Isolated Power System as "A system comprising an isolation transformer or its equivalent, a line isolation monitor, and its ungrounded circuit conductors."

    Section 3.3.9 of NFPA99 2012 defines a Line Isolation monitor testing and replacement services as "A test instrument designed to continually check the balanced and unbalanced impedance from each line of an isolated circuit to ground and equipped with a built-in test circuit to exercise the alarm without adding to the leakage current hazard." In an isolated power circuit, a ground fault would result in an alarm, but power would not be interrupted.

    Section 3.3.184 of NFPA99 2012 defines a Wet Procedure Location as "The area in a patient care room where a procedure is performed that is normally subject to wet conditions while patients are present, including standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff."

    Section 6.3.2.2.1.2(C) of NFPA99 2012 addresses isolated power with regard to Critical Care Areas and states "Where used in locations such as critical care areas, isolated power panels shall be permitted in those locations."

    Section 6.3.2.2.8 of NFPA99 2012 addresses Wet Procedure Locations.

    Section 6.3.2.2.8.1 of NFPA99 2012 states "Wet procedure locations shall be provided with special protection against electric shock."

    Section 6.3.2.2.8.4 of NFPA99 2012 states "Operating rooms shall be considered to be a wet procedure location, unless a risk assessment conducted by the health care governing body determines otherwise.

    This is the most controversial section. A risk assessment by the health care governing body can in fact deem an operating room not to be a wet procedure location. This would be contingent on interpretation of the mopping of the floor which occurs between cases as "drenching", as defined in Section 3.3.89 above.

    Section 6.3.2.2.8.6 of NFPA99 2012 states "The use of an isolated power system (IPS) shall be permitted as a protective means capable of limiting ground-fault current without power interruption. When installed, such a power system shall conform to the requirements of 6.3.2.6."

    Section 6.3.2.2.8.7 of NFPA99 2012 states "Operating rooms defined as wet procedure locations shall be protected by either isolated power or ground fault circuit interrupters."

    Section 6.3.2.2.9 of NFPA99 2012 addresses Isolated Power

    Section 6.3.2.2.9.2 of NFPA99 2012 states "The system shall be permitted to be installed where it conforms to the performance requirements specified in 6.3.2.6.

    Section 6.3.2.6.2.2 of NFPA99 2012 addresses Line Isolation monitor testing and replacement servicess

    Section 6.3.2.6.3.2 of NFPA99 2012 states "The monitor shall be designed such that a green signal lamp, conspicuously visible in the area where the line isolation monitor is utilized, remains lighted when the system is adequately isolated from ground; and an adjacent red signal lamp and an audible warning signal (remote if desired) shall be energized when the total hazard current (consisting of possible resistive or capacitive leakage currents) from either isolated conductor to ground reaches a threshold value of 5.0 mA under normal line voltage conditions. The line isolation monitor shall not alarm for a fault hazard current of less than 3.7 mA.

    This is interesting, as many of the Line Isolation monitor testing and replacement servicess still in use are older, often analog units that are set to alarm at only 2 mA. These units must be replaced immediately, as it is a violation of code to use them.

    Section 6.3.3.3 of NFPA99 2012 addresses Performance Criteria and Testing for Isolated Power Systems.

    Section 6.3.3.3.2 of NFPA99 2012 Line Isolation monitor testing and replacement services Tests states "The line isolation monitor (LIM) circuit shall be tested after installation, and prior to being placed in service, by successively grounding each line of the energized distribution system through a resistor whose value is 200 x V (ohms), where V equals measured line voltage. The visual and alarms shall be activated."

    Section 6.3.4.1 of NFPA99 2012 addresses Maintenance and Testing of the Electrical System.

    Section 6.3.4.1.4 of NFPA99 2012 states "The LIM circuit shall be tested at intervals of not more than 1 month by actuating the LIM test switch. For a LIM circuit with automated self-test and self-calibration capabilities, this test shall be performed at intervals of not more than 12 months. Actuation of the test switch shall activate both visual and audible alarm indicators.

    Section 6.3.4.2 of NFPA99 2012 addresses Record Keeping.

    Section 6.3.4.2.1.1 of NFPA99 2012 states "A record shall be maintained of the tests required by this chapter and associated repairs or modification.

    Section 6.3.4.2.1.2 of NFPA99 2012 states "At a minimum, the record shall contain the date, the rooms or areas tested, and an indication of which items have met, or have failed to meet, the performance requirements of this chapter.

    Section 6.3.4..2.2 of NFPA99 2012 Isolated Power System (Where Installed) states "A permanent record shall be kept of the results of each of the tests.

    Here is a video documentation of a previous isolated power system inspection performed (in English and Spanish) at Kindred Hospital in South Bay, California.



    BiomedRx maintains the highest standard of service, reporting and documentation in the healthcare industry. We perform the annual inspection of your isolated power systems, verify the operation/calibration of your line isolation monitors, and provide the necessary documentation to satisfy The Joint Commission and NFPA 99 requirements. In addition, we provide video documentation of all service visits. You can learn more about hospital isolated power distribution systems on a .PDF file you can download here.

    Please find the reasons to keep Isolated Power in all Operating Rooms:

    1. Reduced Shock Hazard

    2. Continuity of Power

    3. Line Noise Reduction, the transformer acts as an electrical filter.

    4. Advance warning system of what their equipment condition is.

    5. Reduced Fire Hazard

    6. Extra level of protection will keep down liability claims.

    Here is a video documentation of a previous isolated power system inspection performed Fountain Valley Hospital, California.



    In addition to biomedical engineering and equipment maintenance services, BiomedRx now offers testing and certification of isolated power systems and line isolation monitors. BiomedRx can bring any healthcare facility into compliance with NFPA code requirements.


    BiomedRx can perform the annual testing and re-certification of your system if it passes, and we can provide replacement or retrofitting of your system to bring it into compliance if it doesn't.

    BiomedRx testing of isolated power systems exceeds the requirements of NFPA 99 6.3.3.3 and 6.3.4.2.2. Our testing service includes:

    Testing of ungrounded isolated power systems and wiring.

    A complete inspection of all devices for polarity.

    Verification that all applicable sections of code requirements are being met.

    Confirmation that the impedance to ground of both conductors of the isolated system exceeds 200,000 ohms when installed. Document what corrective action that needs to be completed to meet that standard.

    Log voltage and millivolt readings for criteria for acceptability for new construction or existing rooms.

    Line isolation monitors will be tested and all readings will be taken to make sure that they not only are working but working within the specifications of the code requirements from when they were installed.

    Upon completion of testing, a technician shall meet with hospital medical and maintenance staff to explain the operation of isolated power systems; explain alarm procedures and answer any questions.

    Periodic testing and logging for future test required by NFPA 99 will be explained to maintenance staff.

    After all tests have been successfully completed, a written certification will show that all systems comply with codes, good installation practices and specifications. We will also provide written confirmation that the testing logbooks have been delivered to the hospital maintenance staff and that they are up to date.


    Training: "Administrative authorities should ascertain that electric maintenance personnel are completely familiar with the function and proper operation of ungrounded electric circuits." For liability and operation, has your hospital personnel, that are now maintaining your Isolated Power Systems, been trained by a proper instructor? Many hospitals had training when the equipment was first installed but after many years those individuals are no longer with the hospital. BiomedRx can train your current maintenance staff on any manufacturer's isolated power systems. NFPA 99 10.5.8.1.1 states "The Health Care Facilities shall provide programs of continuing education for its personnel.

    Here is a video documentation of a previous isolated power system inspection performed at Beach District Surgery Center, in California.



    BiomedRx services isolated power systems and line isolation monitors manufactured by:

    Amsco
    Auth
    Bender
    Crouse Hinds
    Edwards
    Electromagnetic Industries (EMI)
    Federal Pacific
    Federal Pioneer
    General Electric
    Hevi-Duty
    Hill-Rom
    Hospital Systems
    Isotrol
    Measurement Engineering Limited (MEL)
    Post Glover
    Russell & Stoll
    Square D
    Grainger
    Schneider

    Here is a video discussing recent controversies concerning the use and inspection of isolated power systems and line isolation monitors.



    BiomedRx has isolated power system and line isolation monitor testing and service centers in Alabama, Alaska, Arizona, Arkansas, California (Los Angeles, San Diego, San Francisco), Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachussetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming and Puerto Rico.
    Through the BiomedRx Institute, we provide medical equipment repair training to hospital biomedical equipment maintenance technicians. Our training is designed to reintegrate service responsibility for maintenance of such equipment as anesthesia, dialysis, laboratory, and medical imaging equipment from manufacturer service agreements. Our training has also been instrumental in helping biomed technicians obtain ICC certification.

    Our on-site training is performed at the client's location, on the same equipment the hospital's technicians will be responsible for servicing. Healthcare facilities have achieved great savings through the cancelation of expensive manufacturer service contracts once the hospital's biomed staff is qualified to service the equipment previously under a service agreement. In-house biomed staff welcome the training, as it increases job security and professional competence, and can be undertaken without taking time off work, or paying for travel, lodging, or per diem.

    Among our more popular training courses recently are:
  • Anesthesia Equipment maintenance training.
  • Isolated Power System and Line Isolation monitor testing and replacement services inspection and recertification.
  • Dialysis Equipment maintenance training.

  • If you are interested in learning more about BiomedRx on-site training services, call us today at (424) 204-2382 to schedule a free initial consultation.
    BiomedRx offers consulting services to hospitals and other healthcare providers. We provide guidance in the implementation of medical equipment maintenance programs, in-house technical training, and healthcare information technology.
    BiomedRx offers an outsourced field service solution to manufacturers of medical and scientific laboratory equipment. This is especially valuable to new manufacturers and manufacturers located outside of the United States. Our services are designed to provide a full field service solution, including medical equipment installation, repair, calibration, preventive maintenance and electrical safety inspection, and applications assistance to equipment operators. Through our Service Network, we can provide field service coverage across the United States and in many other countries.
    Independent medical equipment service organizations benefit from association with the BiomedRx Service Network. We provide an outsourced field service solution for medical equipment manufacturers and asset management programs for healthcare providers. Membership benefits include subcontracting opportunities in support of government, manufacturer, and healthcare provider contract relationships.
    Actors, entrepreneurs, elite executives, and other peak performers benefit from BiomedRx technology-based holistic and alternative healthcare services. The BiomedRx Health Center offers such services as Neurofeedback and Biomagnetic Pair therapy. This combination protocol promotes optimal health and wellbeing, and empowers peak performers to exceed their own expectations.
    Our service rate is $450.00 per hour for anesthesia equipment service and/or consulting, $150.00 per hour for biomedical and scientific laboratory equipment maintenance.
    Special pricing plans are available for healthcare providers. Medical equipment manufacturers outsourced field service rates are negotiated on a contract-by-contract basis.

    Quality / Price Guarantee

    BiomedRx has established the highest standard of service in the medical equipment maintenance industry. We provide secure online reports of every service event, including video, images, and downloadable and printable reports. We service your facility during off hours so as not to interrupt your clinical operations.

    It is with this understanding that we now offer to match or beat the price of any legitimate quote for annual medical equipment service contracts. This includes preventive maintenance, repair, calibration, electrical safety inspection, medical equipment installation and deinstallation when needed, asset management, and lifecycle equipment management.

    We are this certain that once you discover the quality and accountability of our level or service, you will understand that BiomedRx is the only choice for your medical equipment maintenance needs.

    BiomedRx Inc.

    8306 Wilshire Blvd.
    Suite 777
    Beverly Hills, California
    90211

    Tel: (424) 204-2382

    Email: info@biomedrx.com

    This text will be replaced

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    Line Isolation monitor testing and replacement services in Miami

    Line Isolation monitor testing and replacement services in Miami

    Line Isolation monitor testing and replacement services in Miami

    Line Isolation monitor testing and replacement services in Miami

    Line Isolation monitor testing and replacement services in Miami
    Line Isolation monitor testing and replacement services in Miami

    Line Isolation monitor testing and replacement services in Miami

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locking out the remaining contactors.50 241 13. In these areas, patients are subjected to invasive procedures and connected to lineoperated, electro-medical devices. defective equipment). 99. C1 in parallel with 1000 Ohms Line Isolation monitor testing and replacement services Inspection and Testing 1. Courtesy of Steven Engineering, Inc. Using the isolated system, an initial line to ground fault can be kept as low as 5 mA, if the system is operating in the "safe" condition. Designed to fit into a 2-gang, 3 1/2 in. This is especially important when ordering permanently installed equipment, such as X-ray apparatus.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 24 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide D. Holes 1. If you need annunciator panels with a greater number of circuits, contact your local Schneider Electric representative for dimensions and cost. It's operation is simple and any failure generally results in equipment or circuit disconnection, very quickly within less than 1 cycle. 56A� Standard for the Use of Inhalation Anesthetics, received major revisions in 1970, 1971, 1973, and 1978. holes 38 14 (2 Top, 2 Bottom for mounting) Panel Is field expandable to 16 secondary branch breakers (QO220) H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel Is field expandable to 16 secondary branch breakers (QO220) 35. deep (minimum) outlet box. However, what if the insulation around the drill motor is defective, allowing the live conductor of the grounded system to contact the metal enclosure? This is a dangerous situation.00 76 3. Back Box The back box catalog number selections include: Flush back box Line Isolation monitor testing and replacement services Inspection and Testing DVBF Surface back box Line Isolation monitor testing and replacement services Inspection and Testing DVBS NOTE: Other receptacles are available. Reference to these facts may be found in the Standard For Health Care Facilities NFPA 99 and National Electrical Code NFPA 70. The housing is connected to a third wire in the power cord, which in turn connects to ground.00 102 13. Kitchen Plumbing as a Ground Receptacle White Wire Black Wire Fixture Courtesy of Steven Engineering, Inc. The transformer would function electrically with no indication of this failure. The shield establishes a ground plane between the primary and secondary. Periodic testing for isolated power systems is required in NFPA-99.2. Leakage and capacity determine the number of circuits energized at one time allowing the panel to operate safely.1.156" Diameter Mounting Holes Face of Mounting Panel Terminal Board Receptacle 6.2. Attendant contacting bed to pacemaker catheter terminals EKG Monitor Possible Broken Ground Path of Leakage Current Courtesy of Steven Engineering, Inc. Make the final selection after weighing the pros and cons of each method. This requires close coordination with the medical staff of the facility, to ensure the designer understands current medical procedures as well as possible future procedures. Then close one secondary circuit breaker at a time, recording the hazard current reading for that circuit only.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Power/Ground Modules 57 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Power/Ground Modules Isolated Power System Inspection and Testing 50 Series (To Fit Gang Boxes These modules contain both ground jack receptacles and power lock receptacles, but do not contain a ground bar with lugs. Now let's use the same kitchen receptacle to show a comparison between a grounded system and an isolated system.) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel is field expandable to 16 secondary branch breakers (QO220). Returning to the example of the isolating transformer, we can convert the isolated system back to a grounded system easily, by connecting one secondary conductor of the transformer to ground. The LIM2010 is intended for use as part of an isolated power system that conforms with the applicable requirements of ANSI/NFPA 99, ANSI/NFPA 70, and CAN/CSA-C22. Even had the case of the equipment been grounded through an intact wire, still no current will flow in the system, because "ground" is not a part of the power circuit in an isolated system.4 of NFPA99 2012 states "The LIM circuit shall be tested at intervals of not more than 1 month by actuating the LIM test switch. All materials conduct electricity to some degree. Holes Selector Switch 14 ga.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 22 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide Proper location of the receptacles on these two panels, plus receptacles in the isolation panel, should eliminate tripping hazards in the traffic flow area.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 44 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Three-Phase Isolation Panels Three-Phase Isolation Panels Three-phase hospital isolation panels are intended for use as a power supply for equipment such as surgical lasers, laminar airflow systems, and other three-phase specialty equipment used in hospital operating rooms. The extent of difficulty encountered with these types of interference varies with the installation and design of the patient monitoring equipment.5 4.00 254 5.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 21 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved IV. Origin of Leakage Current Electrical Hazards Path of Leakage Current Instrument Cases AC Power Line Ground Wire Leakage Current In Power Transformer AC Power Line Leakage Current In Power Cord Electric Circuit Neglect to Connect Ground Wire of Adapter Frayed Power Cord 2-Wire Extension Cord Misuse of 3-Prong Plug with 2-Wire Extension Cord Courtesy of Steven Engineering, Inc. In the past, the common control system was a series of selector push buttons, located in the panel, which controlled the receptacle-energizing mode. This is interesting, as many of the Line Isolation monitor testing and replacement servicess still in use are older, often analog units that are set to alarm at only 2 mA. holes 38 14 (2 Top, 2 Bottom for mounting) Shaded areas denote possible conduit entrance Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Panel Is field expandable to 16 secondary branch breakers (QO220) Low Voltage Primary Circuit Breaker Electrostatic Shield High Voltage LIM Terminal Board Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services Wiring Diagrams and Dimensions 3 kVA and 5 kVA ICU/CCU Panels 7. UL 1047 This is the UL Standard for hospital isolating equipment. Here is a video documentation of a previous isolated power system inspection performed Fountain Valley Hospital, California. System Concept With the increased complexity of isolated systems, it is more important than ever to use a system approach in which all components work with each other to obtain a specific result. Section 6.50 114 3. With this monitoring, there must be some warning when the system becomes grounded. The panel is located behind the support team, near the head of the operating room table.8.00 1245 51. No wire pulling compound with ground conductor. When one terminal of the light bulb touches the black conductor, nothing happens.50 241 13. Member organizations benefit from bulk purchasing discounts, technical training, and earning opportunities in support of our asset management and manufacturer support services.00 813 20.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories 63 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Digital Clocks, Timers, and Accessories MCT Series Schneider Electric offers a line of digital clocks and elapsed time indicators uniquely adaptable to the hospital environment. It has the same features as the M5IAI, but mounts in a 4-gang, 3 1/2 in. ISOLATED SYSTEM & BROKEN GROUND & HOT WIRE TO CASE In this scenario, the circuit breaker will not protect you.2 of NFPA99 2012 Isolated Power System (Where Installed) states "A permanent record shall be kept of the results of each of the tests. BiomedRx maintains the highest standard of service, reporting and documentation in the healthcare industry. If the panel was not accessible, the push button station was located in a separate module, built in a convenient location, or added to the operating room nurse's console. The panel will serve various locations within the hospital. Typical configurations include an x-ray or laser power receptacle matching the NEMA plug configuration of the equipment. Patients who are anesthetized, or are demobilized through illness, restraints, or drug therapy, also have a higher degree of electrical susceptibility than normal individuals. These panels are UL Listed under Section 1047 Isolated Power Systems Equipment. An "in-use" lamp and magnetic door switch ensure that the proper amounts of circuits are online simultaneously. Line Isolation monitor testing and replacement services Other-than-hazardous locations, allowing the use of grounded power systems. 76BM, published in 1971. Holes 1. Adult patients with cardiac arrhythmias can be electrocuted through the misuse of pacemakers connected directly to the myocardium. Application The design of isolated systems from Schneider Electric ensures that all pieces of a system are compatible with each other. See accessories for more information.2.00 51 8. Line Isolation monitor testing and replacement services Maximum of four secondary branch circuit breakers. All hospitals should have copies of the current standards for reference; the design engineer must have this information available.00 813 14. As the diagram shows, normally we would expect 0 Volts from ground to neutral and 120 Volts from the line conductor to either ground or neutral.5 120 208 240 277 480 80A 45A 40A 35A 20A 6SLP116 6SLP216 6SLP316 6SLP416 6SLP516 7H5S11DDIL 7H5S21DDIL 7H5S31DDIL 7H5S41DDIL 7H5S51DDIL 7.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 58 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Power/Ground Modules Master Grounding Station Module Isolated Power System Inspection and Testing 120 Series This unit can be used as a collection point for grounds in a large area such as a coronary care or intensive care ward. The first dynamic ground detectors, now called line isolation monitors, were developed in Canada. 5 Year Warranty Isolated Power System Inspection and Testing on BENDER Isolated Power Panels and Line Isolation monitor testing and replacement servicess LIM2010 Line Isolation monitor testing and replacement services Isolated Power System Inspection and Testing Note: 5 year warranty is issued when an initial startup checkout is performed by a Manufacturer Authorized Technician EDS491-D-2 3 A complete ground fault location system Ethernet and Modbus/TCP Communication Modules The COM460IP is a full-featured communication gateway for connecting BENDER devices to modern networks. 2.00 635 31.5 394 29.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Iso-Gard LIM 62 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Iso-Gard� Line Isolation monitor testing and replacement services (LIM) The Iso-Gard LIM is a distinct fifth-generation line isolation monitor. 1 Line Isolation monitor testing and replacement services Inspection and Testing convert to grounded, fault no. The most generally acceptable method is a PLC controlled system using the switch in the receptacle module.3.0�25. Enhanced features and improved functionality make this the most flexible LIM on the market today. Take all possible safeguards to guarantee the transformer's isolating properties. NFPA No.00 762 24. The specifications should state that, if moisture accidentally enters the conduits, they must be swabbed and thoroughly dried before conductors are pulled. Designs for 6 and 8 in. The GFCI, if present, will also not make any disconnection because, up to this point, current is not making it out of the hot wire and not returning through the cold wire. It is believed that approximately 1,000 ? of resistance lies between the patient's heart and external body parts. Line Isolation monitor testing and replacement services The hospital must develop procedures, specifications, and additional program components to meet its needs. To avoid these risks, generally all wires from anesthesia monitoring equipment are themselves "isolated" and do not have the ability to "ground" the patient. The most susceptible patient is the one exposed to externalized conductors, diagnostic catheters, or other electric contact to or near the heart.16 106 6.2. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker 2 2 Any secondary circuit breaker can be used. 5. At the same time the equipment, doctor or nurses may be standing in prepping solution, blood, urine and other conductive fluids that greatly reduce resistance to passage of unintended electrical current. 16. holes 14 (2 Top, 2 Bottom for mounting) Shaded areas denote possible conduit entrance 3 kVA and 5 kVA Operating Room Panels 7.0 178 14 Typically 5. One advantage to turning the circuits and remote indicators on and off is the elimination of alarms where the power is not being used. Critical care and general care areas can also be considered wet areas. GROUNDED SYSTEM & BROKEN GROUND & GFCI The ground wire to appliances is very important as it is one of the primary defense systems to prevent electrical shock. Isolated Power also protects the patient and staff against electrical shock due to defective patient-care-related electrical appliances. Wiring Diagram H1 X1 X2 X3 X4 H2 Electrostatic Shield Secondary Main Secondary Main 208V Circuit Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) LIM Terminal Board L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard To Ground Bus To Ground Bus To Ground Bus Primary Primary Circuit Breaker 120V Circuit Panel is field expandable to 16 secondary branch circuit breakers (QO220) Panel is field expandable to 2 secondary branch circuit breakers (QO) Courtesy of Steven Engineering, Inc.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels. This large panel condenses many of the electrical accessories normally found in an operating room into one unit. NFPA No. 53007BB is the standard Square D brand back box (4 in.0 208 208 240 240 277 277 480 480 208/120 240/120 208/120 240/120 208/120 240/120 208/120 240/120 DVT122 DVT123 DVT132 DVT133 DVT142 DVT143 DVT152 DVT153 Primary Circuit Breaker Information Dual Voltage Panel Catalog Number Dual Voltage Transformer Catalog Number Primary Circuit Breaker Voltage Total kVA Current DVP2A5k DVP3A5k DVP4A5k DVP5A5k DVT522/DVT523 DVT532/DVT533 DVT542/DVT543 DVT552/DVT553 208 240 277 480 20 125 100 90 50 DVP2A7k DVP3A7k DVP4A7k DVP5A7k DVT722/DVT723 DVT732/DVT733 DVT742/DVT743 DVT752/DVT753 208 240 277 480 22.) Trim Backbox HWHWD Dual Display Clock/Timer1 1 MCTS-95135 trim and 53007BB backbox must be ordered when installing clock/timers in building walls Clock/Timer with separate displays MCT12B 4.00 1067 44.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolation Panel Components 31 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Individuals coming in contact with a secondary lead and ground would complete the circuit and current would flow through their bodies.00 102 3.8 of NFPA99 2012 addresses Wet Procedure Locations.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 26 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Maintenance Electrical Maintenance A periodic maintenance program is essential to the safety of hospital patients and personnel. In the past, most equipment operated on 60 A circuits.3. The line isolation monitor is a critical component of an isolated power system.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 38 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Dual Output Voltage Isolation Panels Catalog Numbers To order dual output voltage hospital isolation panels, specify the correct catalog number for the following items: Line Isolation monitor testing and replacement services Interior Line Isolation monitor testing and replacement services Trim Line Isolation monitor testing and replacement services Transformer Line Isolation monitor testing and replacement services Back box NOTE: The interior, trim, transformer, back box, and optional panel mounted accessories for the LIM must be ordered separately.2. Line Isolation monitor testing and replacement services Each system is capable of accepting up to 16 branch circuit breakers. However, ungrounded wiring and grounded service wiring cannot occupy the same conduit or raceway. Locate a power and ground module at the head of the table so the anesthetist can easily connect equipment.00 203 4. An externally applied current of 50 mA causes pain, possibly fainting, and exhaustion.25 83 3. The level of electrical safety has now been reduced. See page 54 for panel-mounted indicator alarms which can be added to this panel. Combinations of resistive and capacitive faults are placed on the isolated power system. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK.00 72. The line isolation monitor continuously monitors the isolated power system's impedance from all conductors to ground. The advent of World War II delayed the study's results until 1944, when the National Fire Protection Agency (NFPA) published "Safe Practices in Hospital Operating Rooms.0 1067 12.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 20 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide The isolated power requirement of the operating room is almost always under 5 kVA.3.00 508 6. The isolating system covered in this manual is really an "isolated ungrounded electrical distribution system. If no receptacle is selected, the section is field expandable to two branch circuit breakers by ordering additional circuit breakers, Schneider Electric catalog no.0 kVA. The highest risk is to patients undergoing surgery within the thoracic cavity." Section 6.3. Electrostatic Shield Main Circuit Breaker X1 H1 H2 X2 Low Voltage High Voltage LIM Terminal Board Typical of 4 Circuits L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Circuit 1 Circuit 2 Circuit 3 Circuit 4 To Ground Bus Control Transformer Circuit 1 Circuit 2 Circuit 4 Circuit 3 50 A 50 A 50 A 50 A A AX1 AX2 A A AX1 AX2 AX1 AX2 1 2 3 4 5 A AX1 AX2 To Ground Bus To Ground Bus To Ground Bus 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. By interconnecting all metal surfaces within the patient area, potential differences between the metal surfaces can be kept to a minimum.3. Mtg. When the predicted leakage current to ground returns to an acceptable level, the unit automatically resets.437 Diameter Mounting Holes 11 30. The designation of all of the above-mentioned areas in the health care facility is the responsibility of the facility's governing body.00 152 12.2 � 106 Ohms, giving a line-to-ground capacitance value of: Z Line Isolation monitor testing and replacement services Inspection and Testing V Line Isolation monitor testing and replacement services Inspection and Testing 60 Line Isolation monitor testing and replacement services Inspection and Testing 1. The most accessible XLP wire has been low leakage wire Line Isolation monitor testing and replacement services Inspection and Testing FR-XLP (VW-1 XHHW-2). BENDER Isolated Power System Equipment Isolated Power System with Line Isolation monitor testing and replacement services for hospitals and other critical care areas LIM2010 Line Isolation monitor testing and replacement services Line Isolation monitor testing and replacement services No interference with electrical equipment Line Isolation monitor testing and replacement services Digital display showing THC in real-time Line Isolation monitor testing and replacement services Automatic self-calibration and self-check Line Isolation monitor testing and replacement services Audible and visual alarm indicators Line Isolation monitor testing and replacement services Many optional alarms, including load monitoring, over- and undervoltage, temperature monitoring, and more Line Isolation monitor testing and replacement services RS-485 communication interface Line Isolation monitor testing and replacement services Compatible with BENDER's advanced communication bus with several distribution options, including web-based viewing Line Isolation monitor testing and replacement services Compatible with BENDER's ground fault location system (EDS) Ground Fault Location Module The EDS491/EDS461 series of ground fault location modules, combined with the LIM2010, create an installed ground fault location system for ungrounded AC and DC systems. However, it is unlikely that any of the other systems is as widely used, yet as poorly understood, as the system discussed in this catalog. 12.3. General Information: A complete Isolated Power Panel is typically comprised of four assembly types : Interior, Hospital grade transformers, Backbox (enclosure ) and Front trim 5 Dual Voltage Isolated Power Panels BENDER's dual voltage isolated power panels provide two different output voltages simultaneously using one isolation transformer. In an unshielded transformer, a potentially hazardous condition exists if the insulation between the primary and secondary fails for any reason. H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (Space for 25, 6-24 AWG, including 1 lug for 1/0. Disconnect the LIM from the circuit during this test. Actuation of the test switch shall activate both visual and audible alarm indicators. Its operation is based on a patented principle implemented using reliable and time-tested hybrid technology. Isolated Power Systems contain a Line Isolation monitor testing and replacement services (LIM). This selection process requires close communication between the hospital administration, medical staff, and the consulting electrical engineer. The jack also allows connection to the grounding system for testing. An optional rechargeable battery pack can be purchased to prevent loss of time information during a power interruption. System Comparison The previous section illustrates that conductors of an isolated system are safer to handle than are the conductors of a grounded system. The "MUTE" button is used to silence the remote audible alarm. In order for harm to occur, electrical current must pass through the patient (or other human) in a complete circuit from one of the two conductors from the power company, to the other. C. This is significantly better than the other brands on the market which sound between 4.00 1016 32. Features Line Isolation monitor testing and replacement services Modular, expandable gateway between BENDER communication bus and TCP/IP Line Isolation monitor testing and replacement services Gateway between BENDER communication bus and Ethernet Line Isolation monitor testing and replacement services Optional Modbus/TCP communication gateway for status information of BENDER devices Line Isolation monitor testing and replacement services Customizable features available through options Line Isolation monitor testing and replacement services Capability for remote access via LAN, WAN, and Internet L1 L2 Power Supply Class 2 GF Location Module EDS Series MK2000 Series Isolated Power System Inspection and Testing ?F Line Isolation monitor testing and replacement services LIM2010 COM460IP Ethernet Modbus/TCP OPC Modbus/TCP SCADA / BMS TCP/IP/Ethernet Modbus/TCP TCP/IP Modbus/TCP Modbus/TCP WiFi Router OPC Server MK2430 LIM2010 Line Isolation monitor testing and replacement services 4 Isolated Power Panels with Receptacles and Ground Jacks Including all of the features of standard panels, BENDER isolated power panels may also be provided with a section for hospital grade power receptacles and/or ground jacks. Our representatives provide sales and service support on behalf of medical device manufacturers.68 93 4. The dispersal pad from modern (but not all ancient) electrosurgery / electrocautery devices is NOT grounded, precisely to avoid this and other risks." RA1WM (Wall Mount) IA1C M5IAI50 M5IAI Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories 65 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Surgical Chronometer (MCT14B) Today's modern surgical techniques require the most up-to-date support equipment.2(C) of NFPA99 2012 addresses isolated power with regard to Critical Care Areas and states "Where used in locations such as critical care areas, isolated power panels shall be permitted in those locations. Holes Top and Bottom 20. These modules can be used where additional ground jack receptacles and power lock receptacles are needed, but where lugs for hard grounding of non-electrical items are not required. When a light bulb touches both wires, it illuminates. Line Isolation monitor testing and replacement services As part of the team, the hospital administrator can make informed decisions when ordering equipment for the operating room, specifying maximum leakages, and correct cords and connectors. This third point of contact simply connects the metal case of the drill to ground.00 102 12. Non-flammable anesthetizing locations can be further divided into locations that are subject to becoming wet and those that are not. Normally the metallic case of appliances is connected to earth ground via the ground wire. 3. GFCI The Ground Fault Current Interrupter is an ingenious device that usually takes advantage of some magnetic properties, in order to compare, continuously, the current actually flowing in the black and white ("hot" and "cold" ) wires of a grounded power system. Failure to follow this instruction will result in death or serious injury. Current codes and standards for new construction of critical care areas require that no more than 40 mV exist between the reference point and exposed conductor surfaces in the patient's vicinity. If the ground wire is properly attached to the enclosure and connected to ground through the ground pin in the plug, there will be arcing in the drill where it contacts the conductive enclosure.06 2 6. To perform this test, place a value of resistance between one line and ground to act as the fault impedance.25 11 8 12 4 Stainless steel trim plate MCTS95135 9.5 13. Trim Plate (MCTS95135) and Back Box (53007BB) These accessories, when ordered with the MCT12B digital clock, allow the timepiece to be wall-mounted.00 102 4. This gives the surgeon easy access to power for surgical equipment. A note on interpretation of the LIM reading: many variables exist to exactly what current could flow to the patient: 1.0 686 7. Obtain copies of all standards referenced in this bulletin from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. The first step is to isolate the receptacle from the grounded service. An isolated system can be unintentionally grounded. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40.2.00 178 27. The timepieces are designed for areas requiring rapid and precise time measurements. Line Isolation monitor testing and replacement services Combination 3-pole, 4-wire receptacle and indicator alarm module similar to the Square D brand X-Ray Indicator/Receptacle Module Line Isolation monitor testing and replacement services Inspection and Testing XR-IAI.00 1016 35. An electrical wire which is not grounded is thus considered an "isolated" line � if an ungrounded patient were to touch an "isolated" ie ungrounded line, nothing would happen. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. The conclusion from the above paragraph is that it is safe to handle the black conductor only if you do not simultaneously touch the white conductor, kitchen plumbing, or any other grounded item. panel eventually evolved into medical headwalls with isolated power. The trim has no louvers or grilles for air circulation, which contributes to safe and easy cleaning. Standard Features All Square D brand, three-phase hospital isolation panels include the following components: Line Isolation monitor testing and replacement services Hospital isolation transformer from 3. NFPA No. The governing body of the hospital determines whether a location is to be considered "wet. The connection to ground from the pin on the receptacle is often made by a third wire run with the power conductors, or by a metal pipe (conduit) which encloses the two conductors serving the receptacle. Other NFPA standards are also referenced in Article 517, such as NFPA-101 and NFPA-20. Each system has its own set of equipment: Line Isolation monitor testing and replacement services Primary circuit breaker Line Isolation monitor testing and replacement services Square D brand isolation transformer Line Isolation monitor testing and replacement services Reference ground bus bar Line Isolation monitor testing and replacement services Iso-Gard LIM Line Isolation monitor testing and replacement services Load center The compact duplex design minimizes the width of the panel, which uses less horizontal wall space than two conventional isolation panels mounted side by side. Controlled Power Panels for portable Laser and X-Ray System In operating rooms or critical care areas, the portable equipment outlets may require 208 V or 240 V, and will need a separate isolated distribution system (when isolated power is being used in that room).00 508 20.81 97 3. It contributes less leakage to the system because of its higher impedance connection ground. Here is a video documentation of a previous isolated power system inspection performed at Beach District Surgery Center, in California.562 dia. It is recommended that bolt-on breaker bus connections be checked for tightness no less then once every 12 months. The following figure illustrates the size of power and ground conductors and their correct routing in a typical operating room. Ten secondary circuit breakers are recommended for the panel in this example.562 dia. Person Line Isolation monitor testing and replacement services Inspection and Testing Current flowing through our 1000 Ohm person Grounded Isolated Power System V. Line Isolation monitor testing and replacement services Operation at either 50 or 60 Hz.50 114 BATTERY TEST HRS.00 737 16. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment. NFPA No. Perform periodic testing, according to this schedule: Test the LIM push-to-test button monthly.88 581 Back Front Maximum Above Floor Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. This device continually monitors all potential parallel leakage paths to ground. This type of electrical system is commonly called a "grounded electrical distribution system. BiomedRx can bring any healthcare facility into compliance with NFPA code requirements. In a balanced system as shown, we can expect to measure 60 Volts from each line to ground. The LIM2010 may be configured for additional alarms, including transformer overload and overtemperature, overvoltage and undervoltage, and more.00 203 1. The first unit is not actually a LIM, but rather the original "ground detector," which is essentially a balanced bridge device. This was not because of poor planning, but because the engineers did not receive the information needed to plan usable systems. The power cord ground wire could easily accommodate a 5 mA fault and stay well within the requirements of NFPA No. A 5 kVA isolation panel is recommended for operating room use. Line Isolation monitor testing and replacement services Ability to divide branch circuits between two isolation panels and still meet leakage current limits for branch circuit wiring as required in NFPA 99.0 mA LIM connected LIM disconnected Interference produced by switching LIM Iso-Gard connected Iso-Gard disconnected Absence of interference with ISO-GARD 120V supply as seen on oscilloscope EKG printout 120V supply as seen on oscilloscope EKG printout Monitor Hazard Current 1. An optional surface mount backbox is available for remodeling applications. Remember that everything connected to the isolated system increases the total hazard index: LIM, transformer, circuit breakers, secondary wiring, and any peripheral equipment. This includes standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff. Values given are approximate; variations in humidity, conduit moisture content, conduit fill, and wire insulation will give different results. The duplex hospital isolation panel accommodates 16 branch circuit breakers for each of its two systems. Upgrade to a digital MARK V LIM.0 10. Included remote indicators may feature a built-in test button and a transformer overload Isolated Power System Inspection and Testing LED. 99, investigate the system and correct the problem.562 dia.562 Dia. If it were not, arcing would result when the black conductor of the grounded system touched the plumbing. Rather than use half the system capacity for the LIM, this unit reduces LIM contribution to less than 25Line Isolation monitor testing and replacement services Inspection and Testing of the system's capacity. When specifying a surgical facility panel, consider which location is best for all concerned personnel. Schneider Electric also has a line of 3-phase isolation panels to provide power in operating rooms for specialized equipment such as operating room tables and electrosurgical laser machines. However, it only recognizes unbalanced resistive or capacitive faults; it cannot recognize a partially grounded system.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Duplex Isolation Panels 43 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Catalog Numbers Interior Trim Catalog Number Backbox Transformer Catalog Number Catalog Number kVA (each side) Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breakerq Flush Catalog Number Surface Catalog Number 5/5H5S11DDI 5 + 5 120 120 60A 8 (20A) OR32730 53047BB 53053BB 5/5XR11 5/5H5S21DDI 208 30A 5/5XR21 5/5H5S31DDI 240 30A 5/5XR31 5/5H5S41DDI 277 25A 5/5XR41 5/5H5S51DDI 480 15A 5/5XR51 7/7H5S11DDI 7. A complete inspection of all devices for polarity.7 of NFPA99 2012 states "Operating rooms defined as wet procedure locations shall be protected by either isolated power or ground fault circuit interrupters. The plug has a large rubber handle.75 and 5. The size of the back box will depend on the outlet options for the overall device. Controls for both displays are on the face of the unit. Thus, everything attached to the secondary conductors of an isolating transformer will partially ground the system. No additional software is required. All of these panels are available in both one-phase and three-phase configurations with 5 to 25 kVA ratings. In an isolated system, neither of the 120 volts AC power wires available at the power outlets are connected to earth ground. A fairly modest current can cause ventricular fibrillation through the patient's skin, and a very small current indeed can do the same if the heart or tissues immediately adjacent to the heart, are connected in this manner. System Size The system must stay as small as possible to limit leakage currents. Multiple LIM2010 devices may also be controlled by a single, intellgent remote station.1 ohm meter.00 610 10. deep, depending on the application. See Schneider Electric brochure No. A risk assessment by the health care governing body can in fact deem an operating room not to be a wet procedure location. Line Isolation monitor testing and replacement services The appropriate medical engineering services must be obtained. At the same time during such an occurrence, the Line Isolation monitor testing and replacement services would clearly alarm as to the fault condition so that action may be taken.00 203 24.2. This can be an inconvenience since this type of control system requires someone to select which room will be turned on. Dimensions Finished Floor 10. In most cases, an operating room panel with eight or ten secondary breakers is sufficient. The single enclosure places the receptacles at the point of usage and provides a lower resistance ground path between electrical appliances. Mtg. BMETs (Biomedical Equipment Maintenance Technicians) BMETs benefit from association with BiomedRx in many ways.00 1067 29.75 95 Note: 4-gang back box not supplied. It is selectable for either 5mA or 2mA. They are compact, solid state, and easily readable from 30 ft away.3.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 48 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Controlled Power Panels Controlled Power Panels Square D brand controlled power isolation power panels are designed to provide power for portable equipment outlets. The resistance depends on the body mass and moisture content. Features include: Line Isolation monitor testing and replacement services Normal operation indicator (green LED) Line Isolation monitor testing and replacement services Connection monitoring alarms Line Isolation monitor testing and replacement services Total hazard current Line Isolation monitor testing and replacement services Device errors Line Isolation monitor testing and replacement services Overload Isolated Power System Inspection and Testing Line Isolation monitor testing and replacement services Test results Line Isolation monitor testing and replacement services Over-temperature Line Isolation monitor testing and replacement services Measured values Line Isolation monitor testing and replacement services Location of fault from EDS device Line Isolation monitor testing and replacement services Audible and visual indication During normal operation, the MK2430/MK800 indicates the overall status of the system.5 38 27. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker Flush Catalog Number Surface Catalog Number 15H5S22DDIC 15 208 208 90A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof. The following figure illustrates this example. The LIM is a predictive device; by sounding an alarm, it predicts that 5 mA of current could flow from one conductor of the isolated system to ground if a path for the current is provided.50 165 .1. The LIM does not interrupt electrical service. 4. Parallel leakage return paths will also bypass a portion of the leakage current from the patient. Consequently, the line isolation monitor (LIM) monitors only the wiring and its inherent leakage to that single receptacle.0 1016 42.13 156 7. Appropriate actions may be taken while the system remains online. If this connection is broken (for example, if an improperly connected adapter is used), the only path for current in the enclosure to go to ground is through the drill user. Because the patient is not actively being harmed, one does not need to interrupt surgery, but the risks in the room are now much greater and prudent efforts to correct the problem are warranted. Because the mere presence of a broken ground wire does not cause current to flow through a human, the GFCI will not alarm.00 102 RM1204NI 4 Power Lock Receptacles and 4 Ground Jack Receptacles RMDR1204NI 4 Red Duplex Receptacles and 4 Ground Jack Receptacles 4 ground jack receptacles 4 Power Lock receptacles 4 duplex receptacles 4 ground jack receptacles Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 4 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Hazards In 1982, NFPA No. This chapter only covers a few of the important points within these standards. The system has four sevensegment displays with large, red LED characters easily read in high ambient light.18 208 3.7, page 25) Line Isolation monitor testing and replacement services Line Isolation monitor testing and replacement services What the Line Isolation System Does Line isolation systems (isolation transformer + line isolation monitor) protect persons from electrocution by turning a normal "grounded system" (that exists outside the operating room) which only needs a single fault to cause electrocution into a "protected" system in which two faults are needed to deliver a shock.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Dual Output Voltage Isolation Panels 37 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Dual Output Voltage Isolation Panels The dual output voltage hospital isolation panel is a single, ungrounded hospital isolation panel that can supply two different output voltages simultaneously. The wire that is connected to this ground connection is supposed to be colored "white" and is call "cold" because if all is done correctly, you can stand on wet ground and touch this wire and not get shocked -- because it also is connected to the earth. Isolated Power reduces the ignition hazard from arcs and sparks between a live conductor and grounded metal and mitigates the hazard of shock or burn from electric current flowing through the body to ground. Impedance must exceed 200,000 ? to conform with NFPA No. However, its use is not restricted to that application; it can also be used in critical care areas.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Surgical Facility Panels 29 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Surgical Facility Panels (SFP) The surgical facility panel offers another method of providing isolated power in an operating room. Control Panel (MCT4RC) Designed to operate with the MCT14B surgical chronometer. They operate in either the 12- or 24-hour time mode, depending on how the hospital wishes to use them. Upon completion of testing, a technician shall meet with hospital medical and maintenance staff to explain the operation of isolated power systems; explain alarm procedures and answer any questions.00 813 Shaded areas denote possible conduit entrance 42. However, careful planning on the part of the consulting engineer, architect, contractor, and hospital personnel can reduce electrical hazards to nearly zero. 70 Article 517-3 specifies the legal minimum requirements in most states. Many types of data storage and monitoring equipment may be extremely sensitive to line transients and line noise which is frequently present on voltage feeders. H2 H1 X2 X1 X Failures in the primary, which normally cause a dangerous secondary voltage condition, are shorted through the shield, thus activating the primary protective device. The lower the AWG, the larger the wire." Ungrounded System To convert available power from a receptacle into an ungrounded service is possible. Verification that all applicable sections of code requirements are being met. NFPA-99 prohibits the use of extension cords and multiple outlet devices in operating rooms except under certain conditions.43 392 3.2. The white conductor (known as the neutral) is grounded when it is installed by the utility company. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs. The MK series LIM remote indicator may also be built into the module for displaying the status of the connected LIM. Features Features of the duplex hospital isolation panel include: Line Isolation monitor testing and replacement services Two complete isolated power systems in one enclosure.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Grounding 17 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved The following figure illustrates the current path for leakage current which could develop in an electrically operated patient bed.00 102 Clock Display Label Holders (5) Timer Displays (3) 12. The unit is available in 5 or 10 kVA ratings and includes a stainless steel cover. Also check for audible and visible alarms attached to the LIM. 56. No direct electrical connection exists between the primary and secondary coils. IPS with our grounded 1000 Ohm person in contact with the line conductor in each system. The receptacle module contains a switch that sends a signal to the panel that power is required at the receptacle. Record the hazard current reading for the LIM with only the primary circuit breaker closed.9 of NFPA99 2012 addresses Isolated Power Section 6. The average adult exhibits a resistance between 100,000 ohms (?) and 1,000,000 ?, measured hand to hand. 99 describes the line isolation monitor (ground detector) required to monitor the isolated system. When the circuit is energized, a green light on the remote indicator illuminates, telling operating room personnel that the circuit is energized and safe to use. The MCT4RC control panel comes self-contained in a flush mounting back box with stainless steel trim. The situation has worsened over the years because of the increasing presence of electrical diagnostic and treatment equipment.50 114 3.42 112 4. Certain medical conditions may render a patient particularly vulnerable to electrical shock. There is no maintenance recommendation for the QO circuit breaker.00 1016 Optional Accessories Secondary Breakers Line Isolation monitor testing and replacement services 14 Gauge Stainless Steel Hinged Door with Lock and Key Transformer Shaded areas denote possible conduit entrance 16.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 30 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolation Panel Components Isolation Panel Components Square D brand hospital isolation panel components eliminate the difficulty in coordinating an effective isolated power distribution system for hospital anesthetizing locations and electrically susceptible patient areas.00 305 40. This protection, however, may not be adequate for frequent or serious disturbances. However, Schneider Electric limits the temperature rise of the isolation transformer to 80 �C maximum, further ensuring system reliability on all standard transformers. The interposing contact controlled panel is a panel with a maximum of four circuits available. When electrical devices are connected across two conductors on the transformer, they work as if they were connected directly to a grounded system.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied. Courtesy of Steven Engineering, Inc.5 kVA and above. Interlocking Methods There have been several different methods of controlling the interlocking system for equipment receptacles. Since a potential difference is required to produce a current flow, the entire ground plane can rise above ground zero as long as all metal is at the same potential.2.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Operating Room Panels 33 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board 42.00 203 42. Voltage across the person would be: 1000 � 120 Line Isolation monitor testing and replacement services Inspection and Testing 0. Mount the control panel for the timer at the five foot level with the timer mounted at the seven foot level. THE LINE ISOLATION MONITOR AND ACCESSORIES The dynamic non-switching analog an digital LIM manufactured by BENDER can be used on single- and three-phase systems. NOTE: 2-gang back box not supplied. While these requirements are considerably reduced in the NEC and NFPA No. If we compare the same occurrence on a grounded system, and use as an example, a line-to-ground fault, then we are back to our colorful situation as described in Section 2. In this example, we assume that nonisolated patient monitoring leads are used. Square D recommends all consulting engineers who design hospitals have the hardcover "handbook" version of this document available. This is a very important factor: if the drill was really a piece of life support equipment, such as a respirator, it would continue to run without disengaging the circuit breaker or blowing the fuse. When designing the modules that make up its systems, the Schneider Electric engineering department considered every important requirement for isolated systems.4. However, had the ground wire been properly connected to the equipment case, and the Line Isolation monitor testing and replacement services working, it would have given a very strong alarm with a very high current indication. Typically, the 208 or 240 V circuits of the dual output voltage panel supply power to operating room equipment such as mobile X-ray machines or surgical lasers. Isolated systems are now commonly used to protect against electrical shock in many areas, among them: Line Isolation monitor testing and replacement services Intensive care units (ICUs) Line Isolation monitor testing and replacement services Coronary care units (CCUs) Line Isolation monitor testing and replacement services Emergency departments Line Isolation monitor testing and replacement services Special procedure rooms Line Isolation monitor testing and replacement services Cardiovascular laboratories Line Isolation monitor testing and replacement services Dialysis units Line Isolation monitor testing and replacement services Various wet locations Without proper use of grounding, leakage currents could reach values of 1,000 ?A before the problem is perceived. ZT1590RS (left) & MK1550 (right) ZT1591 ZT1594 8 Isolated Power Systems Equipment and Accessories GPM Series-Power and Ground Modules BENDER power and ground modules provide a combination of hospital grade power receptacles and/or hospital grade ground jacks. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment.50 140 4. Other hospital isolation panels can supply only one output voltage. Mounting space is provided within each Square D brand isolated power panel for easy installation. 2. If the white wire touches the plumbing, nothing happens. Line Noise Reduction, the transformer acts as an electrical filter. As was previously mentioned, codes are continually refined and updated, with frequent amendments between major publications. See page 66. Duplex or single receptacles are available on request. Long Line Isolation monitor testing and replacement services Inspection and Testing 10 Super Flex RC 600V Cable 15 Ft. In addition to biomedical engineering and equipment maintenance services, BiomedRx now offers testing and certification of isolated power systems and line isolation monitors.0 5. Available as optional accessories, these alarms include various combinations of indicating lights (green Line Isolation monitor testing and replacement services Inspection and Testing safe, yellow Line Isolation monitor testing and replacement services Inspection and Testing silence, red Line Isolation monitor testing and replacement services Inspection and Testing hazard), audible alarms, and milliammeters.) for mounting the stainless steel trim.63 118 12. The section is field expandable to 16 branch circuit breakers by ordering additional circuit breakers, Schneider Electric catalog no. This is ideal for something such as a hairdrier, in which an equipment fault can be disastrous. The M5IAI50 is a smaller version.00 102 17. See the "Codes and Standards" page 7 of this manual for additional information. The use of articulating arms (booms) is commonplace and must be considered when they are installed in a procedure room using isolated power. Under continuous full load and normal hospital ambient conditions, the front trim panel's total temperature will be no greater than 50 �C. Push button control can be substituted for the switch in the receptacle module. Line Isolation monitor testing and replacement services The ground test for power and ground receptacles is performed by applying a constant current between the room reference grounding bus and each ground contact of each receptacle, measuring the resulting voltage. Retrieved Isolated Power System Inspection and Testing insert date of retrieval hereIsolated Power System Inspection and Testing , from University of Florida Department of Anesthesiology Virtual Anesthesia Machine Web site: Simulation: http://vam. Obviously, conduits must be dry or the leakage characteristics designed into the system will suffer. Contact Schneider Electric Medical Products for more information. The special circuitry developed by Schneider Electric monitors both sides of the line continuously, eliminating the need for switching. This gives the hospital personnel a choice of what to do since the equipment may be supporting the patient's life. We adhere to the highest standard of technical service in the medical device industry. The hope is that this will occur prior to the onset of ventricular fibrillation in the victim or other damage. Conclusion Isolated Power Systems provide many advantages and levels of protection over conventional grounded systems. The Iso-Gard LIM has the following capabilities: Line Isolation monitor testing and replacement services Operating voltages of 85 through 265 Vac.0 1067 12. Explosive anesthesia is now virtually non-existent in the United States. The conclusion from the previous paragraph is that current flows from the black wire to any grounded conductive surface, of which there are many. This panel is ideally suited as a power supply to power/ground modules and X-ray indicator/receptacle modules, also manufactured by Schneider Electric. Back boxes for the 120 Series are ordered separately. Also available are hospital grade ground jacks to facilitate implementation of an equal-potential environment. Line isolation monitor Definition Intro: Electrocution To receive a shock, persons need body contact with two separate conductive materials at different voltage potentials to complete a circuit. In extreme cases, it becomes impossible to use equipment such as an EEG without disconnecting the LIM.2.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 12 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolated Systems The following illustration shows how a transformer is constructed and connected to a receptacle. The cords are designed to withstand hard usage.3. 99 History Published by the NFPA, this code is included as a reference in the NEC Article 517. If these values significantly increase, inspect the system and take corrective action. The MK2430/MK800 displays information regarding each individual device, system, or room and can define custom labels based on each individual application. There are many other requirements for the flammable anesthetizing locations; these requirements are discussed in NFPA No. Line Isolation monitor testing and replacement services The technician gives a logbook to the hospital staff. The Square D brand, type EDD line isolation monitor is typical of the second generation of LIMs.5 120 120 80A 8 (20A) OR32730 53048BB 53052BB 7/7XR11 7/7H5S21DDI 208 45A 7/7XR21 7/7H5S31DDI 240 40A 7/7XR31 7/7H5S41DDI 277 35A 7/7XR41 7/7H5S51DDI 480 20A 7/7XR51 q Panels are field expandable to 16 branch circuit breakers. Line Isolation monitor testing and replacement services Stainless steel trim with lockable door to restrict unauthorized access to circuit breakers and line isolation monitors. For example, year by year more cardiac operations are performed, in some of which the patient's life depends on artificial circulation of the blood; in other operations, life is sustained by means of electric impulses that stimulate and regulate heart action. Includes the MCTBP battery pack, see page 66. Because of the size of hospital electrical systems, it is difficult to establish and follow a maintenance program which includes the entire hospital. No branch circuit should be longer than 150 ft. The use of a central system, containing individual distribution systems for several operating rooms or CCUs, is not practical except in rare circumstances. This includes the technicians responsible for maintaining the systems. Contact Medical Products Marketing when multiple secondary circuits are necessary or for the availability of UL Listing. Surgical facility panels are custom designed and assembled; this allows each hospital to specify the individual components needed in that hospital. Its position indicates how much current could flow from either conductor of the isolated system to ground if a path was provided.1 of NFPA99 2012 states "Wet procedure locations shall be provided with special protection against electric shock.2 of NFPA99 2012 states "The system shall be permitted to be installed where it conforms to the performance requirements specified in 6.2. If the state or local authority having jurisdiction (AHJ) allows the use of grounded power, this should be considered for non-life support, non-life-sustaining equipment such as film viewers and blanket warmers. The snap-in breaker is recommended because of its ability to grab the bus and clamp down under heaver loads. Unfortunately, a perfect system is impossible to attain. It is also important to specify wire with a dielectric constant of 3.. Mtg.9. Considerable controversy exists about the actual danger level for a patient who has a direct electrical connection to his or her heart. above finished floor.00 203 32. If these parts are not properly grounded, a static charge could accumulate; the charge could reach a large enough value to automatically discharge as an electric static spark. Obviously, the white conductor and the kitchen plumbing have something in common. During this orientation, the technician will answer any questions the hospital staff has about the system.2 � 106 C Line Isolation monitor testing and replacement services Inspection and Testing 2. These new hazards were first recognized in NFPA bulletin No. Duplex hospital isolation panels are ideally suited for large operating rooms where more than 14 circuits are required. The upper display is a time clock and the lower display is an elapsed timer.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems ICU/CCU Panels 35 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Intensive Care/Coronary Care Panels These panels incorporate the same components and features as the operating room panels, but have the added feature of eight power receptacles and six approved grounding jacks which connect to a ground bus for attaching fixed equipment and building structural grounds.00 381 32.00 610 22.00 127 5.00 1473 7. Demand that any appliance purchased for use in patient care areas be labeled under this UL Standard for use in the specific area designated. V. We use a receptacle module with a remote alarm indicator built into it for this purpose. Should the hot wire contact the case (which could result in the case having a dangerous electrical voltage) the current will flow right to ground via the ground wire connected to the case -- we call this a "short circuit" because the current never made it to the intended device but diverted "short of the goal" and made it back to the power system through the ground wiring. This compound is usually unnecessary, because most of the runs on an isolated system are short.2. The combination of these elements presents a challenge to increase electrical safety.00 762 12. A single lug for Line Isolation monitor testing and replacement services Inspection and Testing 2 through Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG wire is included for the incoming ground. Log voltage and millivolt readings for criteria for acceptability for new construction or existing rooms. The LIM2010 is a full-featured device which includes a seven-segment display, digital display, and easy-to-read LED bar graph, connection monitoring, and compatibility with BENDER's ground fault location system and communication network.g. Surgical facility centers typically include, but are not limited to: Line Isolation monitor testing and replacement services Surgical clock/timer Line Isolation monitor testing and replacement services Receptacle and/or ground jacks Line Isolation monitor testing and replacement services Film illiminators or Dry Erase Boards Line Isolation monitor testing and replacement services Audio system with speakers 6 MK2000 Series LIM Remote Indicator MK Series remote indicators are designed for use with the BENDER LIM2010 Line Isolation monitor testing and replacement services. The positioning of the electrical equipment in the operating room has a direct relationship to this information.50 343 8. In placing resistance, the appliance limits the amount of current that can flow. A thorough study of applicable codes and standards is required to effectively design a project. Patients may also be connected to electro-medical devices, such as heating pads, EKGs, drainage pumps, monitors, otoscopes, ophthalmoscopes, and IV lines.ufl. The location of this panel is important; correct placement will keep electrical and ground cords out of the traffic area. Be sure they are clearly visible to personnel.0 mA 0 0. The limit is usually reached when 12 to 14 branch circuits are connected. panels were put aside in favor of the standard panels previously mentioned.50 (4) . If the impedance is less than that required by NFPA No.00 1524 60. Be careful when connecting the ground terminal of the equipment receptacle to the grounding system; the ground terminal must connect to the ground system serving the patient who is served by the equipment receptacle. Leakage Currents Electric equipment operating in the patient vicinity, even though operating perfectly, may still be hazardous to the patient. The push button control is still used, but it limits the number of circuits on at one time to one, and takes control of the circuit out of the room..-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 8 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Codes and Standards The primary and secondary of the isolation transformer cannot exceed 600 volts in any isolation system supplying power to an anesthetizing area or other critical care patient area. Ventricular fibrillation can occur from exposure to this leakage current. 99, grounding requirements still remain more demanding than those shown in Article 250 for other occupancies.377R Courtesy of Steven Engineering, Inc. However, you will have just made the granddaddy of all leakage scenarios, and the Line Isolation monitor testing and replacement services should alarm strongly. Interior Trim Catalog Number Back Box Transformer Catalog Number Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker1 1 All panels contain 8-20/2 branch breakers and are field convertible to 16-20/2 branch circuit breakers.88 22 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.00 283 4. It has a high impedance capacitive/resistive return path.2 of NFPA99 2012 states "The monitor shall be designed such that a green signal lamp, conspicuously visible in the area where the line isolation monitor is utilized, remains lighted when the system is adequately isolated from ground; and an adjacent red signal lamp and an audible warning signal (remote if desired) shall be energized when the total hazard current (consisting of possible resistive or capacitive leakage currents) from either isolated conductor to ground reaches a threshold value of 5. Codes require an indicator alarm in each operating room. For example, during cardiac catheterization, small amounts of current could cause ventricular fibrillation. These combined annunciator panel units meet this need.00 305 MCT14B (Bottom View) MCT14B (Front View) Dual Dimensions: Inches mm 13. Limits are established by codes and standards, specifically the NEC.The consulting engineer can use this table to estimate the system hazard current at the design stages. Medical Equipment Maintenance The increased use of biomedical instruments presents another maintenance responsibility.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels.5. Enhanced features and improved functionality make this the most flexible LIM on the market today. 3H5S11CDDI to 3H5S11DDDI. When the system becomes partially grounded, the warning is still necessary, but a limit must be set for the warning to be sounded. In these areas, the patient may come in contact with ordinary appliances, such as nurse call systems, electrical beds, examining lamps, telephones, and entertainment devices.00 381 3. A 2 mA meter is available for either style by changing the "M5" in the catalog number to "MM.00 533 7. Other stations wired similarly. We can measure the voltage drop across the system capacitance by using a high impedance voltmeter. The batteries are rechargeable, which eliminates the need to replace dead batteries.00 686 Transformer H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel Is field expandable to 16 secondary branch breakers (QO or QOB) 3�10 kVA Low Profile Operating Room Panels Wiring Diagram and Dimensions Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. 14 ga. Electric Equipment Power Cord Grounding The green grounding conductor in an equipment power cord prevents static potentials from reaching dangerous values on noncurrent carrying parts such as housings, cases, and boxes of electrical appliances. For a LIM circuit with automated self-test and self-calibration capabilities, this test shall be performed at intervals of not more than 12 months. Courtesy of Steven Engineering, Inc. Consider this scenario: The person using the drill touches his or her opposite hand on the plumbing fixture for support. The meter is calibrated in milliamperes (mA) of current.1 of NFPA99 2012 states "A record shall be maintained of the tests required by this chapter and associated repairs or modification. Close only one circuit breaker at a time; otherwise, the reading cannot be attributed to a specific circuit.00 737 6. Optionally, it can also be used to silence all audible alarms in the system. The calculated resistance should be below 0." Section 6. Courtesy of Steven Engineering, Inc. This lack of information led to such errors as incorrect voltage for portable X-ray machines, insufficient receptacles, and insufficient capacity in isolating systems.0 kVA 7 Line Isolation monitor testing and replacement services Inspection and Testing 7. Although the primary reason for Isolated Power System design and installation was not to achieve this noise reduction, but to provide a low leakage secondary power system, we must consider the "built-in" advantages of this system again when comparing isolated power with conventionally grounded systems.00 127 5.00 330 12. Non-flammable anesthetizing location requirements are also covered in NFPA No.0 mA of hazard current. BENDER type XRM receptacles modules are recommended for use with this panel configuration.00 1067 60. Advanced Warning Of Equipment Failure It is required that all hospital biomedical equipment that may come into contact with the patient be periodically tested for leakage currents.00 1880 1829 20.3. Connect the ground terminal of the LIM, which monitors the controlled power panel, to the equipment ground bus in the emergency distribution panel serving the 120 V isolated systems within these areas.e. How many of us has never received some form of electric shock? Isolated Power Systems are the best solution for reliable and safe power, particularly in the hospital environment.3. The consulting electrical engineer must be the nucleus of the team that makes the decisions.2 mA Allowed for System Hazard Current 4. We perform the annual inspection of your isolated power systems, verify the operation/calibration of your line isolation monitors, and provide the necessary documentation to satisfy The Joint Commission and NFPA 99 requirements.6. This is because every piece of electrical equipment produces a leakage current. Since the LIM is responding to total hazard current (THC), any energized remote will respond to an alarm.0 5.1V 1201000 Voltage across C2 would be: 1. Because of the PLC, multiple locations can be served at one time.00 283 12.g. Interlocking circuitry allows predetermined locations to be used at any given time. This note referred to the recommendation found in the NEC (517-160) concerning the 3.1 ?. The cord is crimped to both the conductor and the insulation, providing maximum strain relief. Reduced Fire Hazard 6. BENDER Isolated Power Panels provide isolated power to electrical systems in operating rooms and other critical care areas. ORICA The ORICA model is complete with green, yellow, and red indicating lights. Hospital Isolated Power Systems Overview and History 3 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Overview This catalog has three purposes: Line Isolation monitor testing and replacement services To demonstrate to hospitals the need for isolated systems Line Isolation monitor testing and replacement services To guide the engineer in the application of hospital ungrounded systems Line Isolation monitor testing and replacement services To describe in detail the Square D� brand equipment used to design effective and economical isolated ungrounded systems Schneider Electric has been building isolating transformers for hospital use since the first equipment standards appeared in 1944." Section 3. Section 6. For more information, contact your local Schneider Electric representative.0 305 1.00 178 40.6 of NFPA99 2012 states "The use of an isolated power system (IPS) shall be permitted as a protective means capable of limiting ground-fault current without power interruption. Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) A AX1 AX2 1 2 3 4 5 A AX1 AX2 1 2 3 4 5 A AX1 AX 2 1 2 3 4 5 A AX 1 AX 2 1 2 3 4 5 X1 H1 H2 X2 To Ground Bus To Ground Bus To Ground Bus To Ground Bus Control Transformer L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Circuit 1 Circuit 2 Circuit 3 Circuit 4 Circuit 1 Circuit 2 Circuit 4 Circuit 3 50 A 50 A 50 A 50 A Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. (In this example, system capacitance has been neglected as its impedance value is many times that of the neutral-ground bonding. The secondary line-to-ground potential depends upon the portion of the primary winding between the ground and the fault, plus or minus the portion of the secondary winding.00 762 6. Circuit runs must be kept to the shortest length possible. Here is a video documentation of a previous isolated power system inspection performed at the Veterans Administration Hospital, Los Angeles Lately there has been controversy in the hospital engineering community concerning the use of isolated power systems and the 2012 changes in the National Fire Protection Association standard, NFPA 99. Panels are controlled by means of a PLC.50 241 13. If that leakage rises above a safe threshold, the Line Isolation monitor testing and replacement services will alarm. For example, change 15H5S22DDI to 15H5S22DNI. Ground fault location capabilities are also available, providing notification of the source of the fault in a timely fashion. Reduced Shock Hazard 2. This would create the potential for current to flow from the opposite conductor to ground, as it would in any grounded electrical distribution system. Flush Catalog Number Surface Catalog Number 3H5S11DDI 3H5S21DDI 3H5S31DDI 3H5S41DDI 3 120 208 240 277 120 30A 20A 20A 15A 8-20 A OR 24350 53013BB 53017BB See note 2 5H5S11DDI 5H5S21DDI 5H5S31DDI 5H5S41DDI 5H5S51DDI 5 120 208 240 277 480 60A 30A 30A 25A 15A 7H5S11DDI 7H5S21DDI 7H5S31DDI 7H5S41DDI 7H5S51DDI 7. If the alarm is going off, the last piece of equipment plugged in is usually suspect and should be unplugged.12 79 2. The alarms indicate the condition of the LIM.00 1448 Shaded Areas Denote Possible Conduit Entrances Piano Hinge (Full Length of Door) Stainless Steel Cover . Line Isolation monitor testing and replacement services Critical Care Areas: special care units, intensive care units, coronary care units, angiography laboratories, cardiac catheterization laboratories, delivery rooms, operating rooms, and similar areas. Isolated Power System with our 1000 Ohm person Diagram 3 Diagram 4 Diagram 4 assumes a typical equally distributed, balanced capacitive system where the small leakage current, 50 microamps, flow from L1 , via C1 , through the ground, and returns to L2 via C2 . C. The unit is compatible with all hospital isolation transformers and hospital isolation systems. Therefore, the transformer can easily provide power for loads up to 150Line Isolation monitor testing and replacement services Inspection and Testing of its rating. QO220. No branch circuit should be longer than 150 ft. The hospital administration and designer are responsible for determining the degree of patient susceptibility and selecting the correct equipment.3.) Scroll down for a in-depth narrative play click to play simulation ISOLATED SYSTEM Note that in an operating room (OR) with isolated power, there is a Line Isolation monitor testing and replacement services (LIM) mounted somewhere, which gives you a reading of how much "connection" there is between the supposedly isolated wall power wires, and earth ground. With nothing connected to the system except the LIM, 1000 ?A could flow from either line of the isolated system to ground. Should a faulty piece of equipment be plugged into any of the output sockets of the Isolated Power System, then this would immediately cause the LIM to alarm, a warning that such an event had just occurred. This provides a running history for the permanently installed wired system. XR29420 53015BB 53019BB 25XR22 25H5S23DDIC 208 240 125A 25XR23 25H5S32DDIC 240 208 125A 25XR32 25H5S33DDIC 240 240 125A 25XR33 25H5S42DDIC 277 208 125A 25XR42 25H5S43DDIC 277 240 125A 25XR43 25H5S52DDIC 480 208 65A 25XR52 25H5S53DDIC 480 240 65A 25XR53 Wiring Diagram and Dimensions Electrostatic Shield Main Circuit Breaker Low Voltage High Voltage LIM Terminal Board Transformer Line Isolation monitor testing and replacement services Circuit Breaker Panel Note: Interlocking circuit shown to indicate only one of four circuits working at any time.00 914 Left Side Right Side 22. Hospitals Our consultive, technical and educational services are designed to ensure maximum efficiency and effectiveness of patient care, while maintaining an environment of care which complies with all regulatory agencies. Line Isolation monitor testing and replacement services The chief staff surgeon can specify a traffic flow within the operating room, allowing the engineer to provide proper receptacle placement.00 203 40. External features of the Iso-Gard LIM include: Line Isolation monitor testing and replacement services Easily readable and understandable faceplate with a smooth surface for cleaning ease and pleasing appearance. Sometimes, this interference can be detected on patient monitoring equipment, creating difficulty in gathering information needed by the medical staff. The maintenance program should apply to all patient care areas; but it is of greatest importance for special care units where the most seriously ill patients and the most complex equipment co-exist. All features, as well as the device setup, may be carried out with the four, onboard pushbuttons, or on an optionally connected MK1550 clock remote. COUNT HOLD RESET Note: 2-gang back box not supplied.3. Also, manufacturers have sometimes discontinued production of wire types that we have recommended. The front trim is Line Isolation monitor testing and replacement services Inspection and Testing 304 stainless steel with a brushed finish, ensuring corrosion resistance and ease of cleaning. In order for harm to occur, electrical current must pass through the patient (or other human) in a complete circuit from one of the two conductors from the power company, to the other. The PLC is programmed to operate a predetermined number of circuits at one time. Built-in test circuit to exercise the alarm without adding to the leakage current hazard. While there are some panels designed to accept a ventilated trim, Schneider Electric recommends that these panels be placed in areas that are not required to maintain a sterile atmosphere, such as a non-sterile corridor. What we commonly call "insulators," such as rubber or plastic coverings on wire, are actually just poor conductors. However, the Square D brand, 5 kVA isolation panel incorporates a transformer built with a 220 �C insulation system, suitable for a 150 �C rise. They are furnished with stainless steel trim plates. A hazardous level of current could be maintained since the human body has sufficient resistance to keep the current below the level required to disengage the circuit breaker or blow the fuse.5 mA 1.00 102 4. Since the operating room support team uses most of the electrical outlets, the majority of the services should be placed behind them, near the head of the table.) 15 and 25 kVA, 3-Phase Surface Panel 25. One half of the panel can be used to supply critical system power, while the other half supplies normal system power. 99. 5 Line Isolation monitor testing and replacement services Inspection and Testing 5. Similar to a standard distribution panel or load center, it can supply both 120/208 V or 120/240 V of ungrounded, isolated, single-phase power using only one isolation transformer. Alarm and Display Features: Status and alarms are viewed on an easy-to-read LCD display. Cords are highly flexible and available with either a heavy duty clip or lug on one end, and plug with rubber handle on the other. We must never neglect the fact that a leakage on a grounded system will return via the low impedance of the parallel paths to ground�for example, our 1000 Ohm person. This provides an additional layer of safety to protect both operators and patient alike. It is selectable for either 5mA or 2mA.00 559 8. If the panel location is inaccessible or inconvenient for operating personnel, the push button station is available in a separate module that can be installed at the nurses' station or any other convenient location. The Line Isolation monitor testing and replacement services constantly probes for possible current connections and displays the potential or existing leakage. Article 517-20(a) of the 1993 National Electrical Code states that 15 and 20 ampere, 125 Volt, single phase receptacles supplying wet locations shall be provided with ground fault circuit interrupters if interruption of power under fault conditions can be tolerated, or an isolated power system, if such interruption cannot be tolerated.3.00 279 13.0 10. Pressing the silencing switch disconnects the audible signal. Section 6. Grounding of circuits must be performed as required in Article 250 of the NEC.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Electrical Hazards 5 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Surgical techniques bypass the patient's body resistance and expose the patient to electrical current from surrounding equipment. If additional receptacles are required, up to 16 secondary breakers can be used.562 Dia. Countertop areas may be served with grounded power when the power used is restricted to this area. Both the MCT4RC and the MCTCT control units include a 15-foot wiring harness for connection to the clock/timer. The elapsed time indicators can interface with a patient monitor, code blue alarm, or other equipment.3. The integrated web server displays the status of the entire network of BENDER devices, and may be viewed through the web browser (with Silverlight plugin installed) of any connected PC. Planning and implementing a medical equipment control program should include the following factors: Line Isolation monitor testing and replacement services The hospital should obtain competent, objective biomedical engineering assistance when planning and developing the program.00 1067 2. Regulations Post-1984 Isolated power systems are no longer required in operating rooms as of 1984, thus some modern equipment may offer the potential for electrocution, although this risk is reduced by the use of ungrounded batteries for power, double insulating equipment, and isolating patients from equipment (Morgan and Mikhail 23-23). If you accidentally touch this wire (never do this!) while it is powered, you have a significant likelihood of dying. Reduced shock hazard 2. 29-M1989. However, during operation, malfunction may occur due to spillage of liquid or cable damage (cart running over power cable or equipment being dropped).0 10. The circuit is selected by means of a switch located in the receptacle module or at a push button station in the panel or located in a secure area. It uses microprocessor technology to improve the performance, versatility, and reliability of this unit over any previous LIMs. Order the appropriate number of circuit breakers Line Isolation monitor testing and replacement services Inspection and Testing QO220.00 127 1. Line Isolation monitor testing and replacement services Both analog and digital hazard current indication. The table below shows the recommended breaker-to-load schedule. The black conductor is safe to handle as long as you do not simultaneously touch the white conductor or any grounded item.0 1067 12.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolated Systems 15 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 2. Extra level of protection will keep down liability claims. Use of the cords can also allow higher than desired current leakage, causing the IPS to go into alarm.562 Diameter Mounting Holes 14 16. The acceptable protection is the same as that defined for NFPA No. This panel works like the PLC panel, but limits the output to only one circuit at a time. Line Isolation monitor testing and replacement services Each panel includes two Iso-Gard Series D microprocessor-controlled line isolation monitors. 99 Isolated Power System Inspection and Testing Health Care Facilities. In critical care areas, where one transformer serves one bed, a 3 kVA transformer is recommended.00 1295 12. Failure to use the grounding conductor in power cords causes a dangerous electrical hazard. Please find the reasons to keep Isolated Power in all Operating Rooms: 1. Ground detectors may still be used if they were installed before 1971. Accessory Control Panels These control panels give hospitals the flexibility to mount digital time devices in a desired location. Many people feel they can safely touch either one of these conductors, but this oversimplification could result in a dangerous shock. Transformer Catalog Numbers 120 V Winding Rating (in kVA) Primary Voltage Secondary Voltages Catalog Number 5.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 60 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Remote Annunciator Panels Remote Annunciator Panels Annunciator Panel for 1 to 4 Circuits Square D brand remote indicator alarms are available in an annunciator panel for monitoring from a single central location.25 57 Lug Furnished Ground Plug Rubber Handle Ground Plug Rubber Handle P751N P753N Line Isolation monitor testing and replacement services Inspection and Testing 10 RC 600V Cable 15 Ft. No branch circuit should be longer than 150 ft.00 635 29. V. Up to 12 separate current transformers may be connected to the device.3. Like the mechanical interlock panel, this panel will serve various locations." This, in effect, grounds the secondary through the primary. Isolating systems are now commonly used for protection against electrical shock in many areas, among them: Line Isolation monitor testing and replacement services Intensive care units (ICUs) Line Isolation monitor testing and replacement services Coronary care units (CCUs) Line Isolation monitor testing and replacement services Emergency departments Line Isolation monitor testing and replacement services Special procedure rooms Line Isolation monitor testing and replacement services Cardiovascular laboratories Line Isolation monitor testing and replacement services Dialysis units Line Isolation monitor testing and replacement services Various wet locations Electrical Hazards In Hospitals The major contributors to hospital electrical accidents are faulty equipment and wiring.50 343 4. Line Isolation monitor testing and replacement services The impedance of the isolated system (impedance to ground of either conductor) is tested. B. NFPA-99 requires yearly testing of Isolated Power Panels.50 241 13. Suggested boxes are gangable outlet boxes. The components in an isolated power system can be purchased separately; however, it is much easier and makes more sense to purchase a complete system. The visual and alarms shall be activated. 7 Dual Display Digital Clock and Timer The ZT1590 digital clock and timer is a complete, microprocessor-based device that displays both the time of day and elapsed time information. 13.4. Periodically test these pieces of equipment and tag the equipment, showing leakage current readings. In other cases, the central system would result in longer runs from the panel to the receptacles and devices. Designed to fit virtually anywhere a single-gang wiring device can be mounted, the RA1WM is complete with SILENCE, HAZARD, and SAFE indicators, a push-to-test button, and an LED light bar for metering. No branch circuit should be longer than 150 ft. The unit is totally enclosed and non-ventilated to help keep out dust, dirt, recirculating air, and cleaning solutions. This monitor is included as a standard component of all Square D brand hospital isolation panels. Field Test and Inspection Because of the complexity of isolated power and the ground system, the manufacturer should field test the system before use. MK2000P-G1 (left) & MK2000 CBM (right) RAS-04AF MK2430 (left) & MK800 (right) Isolated Power System Inspection and Testing Overload feature requires the use of BENDER STW series CTs installed in the isolated power panel.24 82 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Conduct this system impedance test without any secondary equipment connected to the circuits. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40. 2. The potential difference measured between these two points should not exceed 2 V. In addition, connect a minimum Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG ground wire between the controlled power panel and the equipment receptacle. The front trim is Line Isolation monitor testing and replacement services Inspection and Testing 304 stainless steel with a Line Isolation monitor testing and replacement services Inspection and Testing 4 brushed finish.0 kVA and below, and 35 dB for units 7. All features, as well as device setup, are carried out on the connected MK1554 chronometer remote.00 152 Shaded areas denote possible conduit entrance Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The hinged access door to the dead front circuit breaker and the LIM compartment has a lock to prevent unauthorized entry. Line Isolation monitor testing and replacement services Request that patient electrical devices such as toothbrushes and shavers be battery powered. Your analog line isolation monitor requires monthly testing. The ORICAC has a 2 mA milliammeter, while the ORICA5C has a 5 mA milliammeter.44 113 3. Square D brand isolation panels use a non-ventilated enclosure for most panel designs. We have built an enviable reputation for reliability, low sound levels, and minimum inherent leakage. The newer and more popular control scheme is the PLC controlled panel. The alarm simply indicates the system has reverted to a grounded or partially grounded system, which is the same system contained in the rest of the hospital. It soon became apparent these initial standards fell short of providing the necessary guidelines for construction of rooms in which combustible agents would be used. The NEC requires that an audible and visual indication of alarm be available wherever isolated power is used. The neutral of the transformer is bonded to ground, which, if adequately sized, will provide an equipotential bond between the neutral and ground conductors. This is extremely difficult to do since the availability of these wires differs from region to region. The "connection" should be below 2 milliAmperes (mA). The equipment should be spread out through the system to avoid unnecessary alarms. Wire pulling compound with ground conductor. Line Isolation monitor testing and replacement services Ability to provide both critical service and normal service power from one isolation panel. This ground jack provides connection to the grounding system for redundant grounding of exceptionally hazardous equipment. The Iso-Gard LIM also self tests and self calibrates once every 65 minutes eliminating the need to manually test the unit periodically. If a hairdryer were connected to an ungrounded system, and developed a fault, the person touching the hairdryer might offer a low resistance alternative pathway and thus receive a shock, whereas if the hairdryer were grounded, most of the electricity would pass through the ground wire (although a small amount might pass through the individual) Primary vs. 56, the basis for our current standards. General Application Criteria A. All panels are designed to accept up to 16 secondary breakers per UL. 2 Transformer included for 3 kVA and 5 kVA when interior is ordered.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 36 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems ICU/CCU Panels H1 H2 X1 X2 L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard 7. Detailed Features of the Duplex Isolation Panel Iso-Gard LIMs Primary main circuit breakers Secondary circuit breakers (Type QO, 2-pole) Divider separates two isolation systems Type 1 enclosure with 14-gauge stainless steel trim Courtesy of Steven Engineering, Inc. If designated as a wet location, extra electrical protection is required. This commonly results from using two-prong plugs and receptacles, improper use of adapters, use of two-wire extension cords, and the use of damaged electrical cords or plugs. In this situation, one should unplug devices to find out which one may have the problem. In order for harm to occur, electrical current must pass through the patient (or other human) in a complete circuit from one of the two conductors from the power company, to the other.3. Section 6. Transformers All transformers for the dual output voltage isolation panels are single-phase only. Schneider Electric is often asked to specify manufacturers and wire catalog numbers for the low leakage conductor. Standard straight blade receptacles, NEMA Configuration Line Isolation monitor testing and replacement services Inspection and Testing 5-20R, are now acceptable in operating rooms. Booms are typically wired with a cord that has PVC insulation and a PVC jacket. Isolated Systems The term "isolated system" can apply to many systems in a hospital, such as the management of patients having a communicable disease. This unit has unique power backup systems that requires no battery so there is no need for battery monitoring and replacement. It contributes only 50 ?A of leakage to the system, about one percent of the system's usable capacity. It also poses a potential problem in that someone could easily push a button to turn the power on in another room, thus turning off the power in a room that may actually be using a piece of equipment.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 34 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Operating Room Panels Low Profile Operating Room Panels When isolated power system panels were introduced in the 1960's, Schneider Electric offered panels from 5 to 16 in. In a room powered by an Isolated Power System, you can stand with bare feet on a wet floor and touch an outlet wire with little chance of being harmed.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Duplex Isolation Panels 41 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Duplex Isolation Panels The duplex hospital isolation panel is a single enclosure containing two complete 120 V secondary hospital isolation systems.) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel is field expandable to 16 secondary branch breakers (QO220).00 1880 32. The table below shows the approximate expected hazard currents per foot of power conductor, using the various wiring schemes described in the preceding paragraphs.00 406 Safe/Silence Hazard Stainless Steel Trim IA16CI Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. BENDER offers more than 60 years of experience with ELECTRICAL SAFETY and the technology associated with "The Management of Line-to-Ground Faults" is power distribution systems.0 305 (4) . Your analog line isolation monitor requires monthly testing. This chapter briefly covers the sections of codes and standards that apply to hospital isolated ungrounded distribution systems.3.?? Document what corrective action that needs to be completed to meet that standard.5 120 208 240 277 480 120 80A 45A 40A 35A 20A 8-20A IC29510 53029BB 53037BB 7XR11 7XR21 7XR31 7XR41 7XR51 10H5S11CDDI 10H5S21CDDI 10H5S31CDDI 10H5S41CDDI 10H5S51CDDI 10 120 208 240 277 480 120 100A 60A 60A 45A 30A 8-20A IC29510 53029BB 53037BB 10XR11 10XR21 10XR31 10XR41 10XR51 Courtesy of Steven Engineering, Inc. Many manufacturers of voltage-sensitive equipment have recognized the problem created by transients and noise on their equipment's input line and have provided a measure of protection as an integral part of their equipment. NOTE: Install indicator alarms above the five foot level in each operating room or anesthetizing location. Line Isolation monitor testing and replacement services Available in either 5 or 10 kVA ratings. Line Isolation monitor testing and replacement services Panel-mounted indicator alarm and microammeter for operating room applications.5 208 208 240 240 277 277 480 480 208/120 240/120 208/120 240/120 208/120 240/120 208/120 240/120 DVT722 DVT723 DVT732 DVT733 DVT742 DVT743 DVT752 DVT753 10. ISOs (Independent Service Organizations) The BiomedRx ISO network provides subcontracting opportunities for independent service organizations involved in the maintenance and servicing of medical equipment and support systems. Line Isolation monitor testing and replacement services NFPA-3M Line Isolation monitor testing and replacement services 56HM Line Isolation monitor testing and replacement services 56K Line Isolation monitor testing and replacement services 56B Line Isolation monitor testing and replacement services 76A Line Isolation monitor testing and replacement services 56C Line Isolation monitor testing and replacement services 76B Line Isolation monitor testing and replacement services 56D Line Isolation monitor testing and replacement services 76 Line Isolation monitor testing and replacement services 56G Courtesy of Steven Engineering, Inc. Thus the circuit breakers and the grounded cases of appliances provide one means of protecting users.3. These provisions were met by supplying each critical patient care area with a specified type of ground jack.00 610 (4) .0 or 5. Primary voltage to these panels can be either 208 or 480 V delta; the secondary voltage is usually 208 V. XR29420 53015BB 53019BB 25XR22 25H5S23PLCIR 208 240 125A 25XR23 25H5S32PLCIR 240 208 125A 25XR32 25H5S33PLCIR 240 240 125A 25XR33 25H5S42PLCIR 277 208 125A 25XR42 25H5S43PLCIR 277 240 125A 25XR43 25H5S52PLCIR 480 208 65A 25XR52 25H5S53PLCIR 480 240 65A 25XR53 Wiring Diagram and Dimensions L N 1 2 3 4 5 Electrostatic Shield Main Circuit Breaker Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) X1 H1 H2 X2 L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Control Transformer Programmable Controller Customer Load Connections Auxiliary Contacts Contactor A A AX2 AX1 Low Voltage Transformer Line Isolation monitor testing and replacement services Circuit Breaker Panel 14 ga. XRM Series-X-Ray/Laser Receptacle Modules Used in conjunction with circuit-controlling isolated power panels, XRM series modules provide a convenient source of power for portable x-ray and laser equipment. This type of LIM connects to ground through a high resistance so that it can measure the impedance of the total system.5 120 208 240 277 480 80A 45A 40A 35A 20A XR 29420 53015BB 53019BB 7XR11 7XR21 7XR31 7XR41 7XR51 10H5S11DDI 10H5S21DDI 10H5S31DDI 10H5S41DDI 10H5S51DDI 10 120 208 240 277 480 100A 60A 60A 45A 30A 10XR11 10XR21 10XR31 10XR41 10XR51 Courtesy of Steven Engineering, Inc.12 79 3. Continuity of power is maintained on systems where interruption cannot be tolerated. The type of controls applied depends on the need.The 3-phase panel should be used for 3-phase applications only.5 7. Both sides are independently configurable. It virtually eliminates all of the undesirable features in the early dynamic ground detectors and line isolation monitors. Interior Trim Catalog Number Back Box Transformer Catalog Number Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker1 1 All Panels contain 8-20/2 branch breakers and are field convertible to 16-20/2 branch breakers. The MCT series of clocks/timers is designed for component mounting in various pieces of equipment such as modular walls, consoles, surgical facility panels, or building walls." Section 6.3. No DIP switch configuration is required.2 of NFPA99 2012 states "At a minimum, the record shall contain the date, the rooms or areas tested, and an indication of which items have met, or have failed to meet, the performance requirements of this chapter. The portable electric drill probably has a three-prong plug. If improper conductor insulation is chosen, the result is the same as if the capacitive leakage is raised. THE GROUNDED SYSTEM Diagram 1 Diagram 1 shows the schematic of a conventionally grounded system. The interiors, trims, and transformers can be shipped later. In these locations, a "Ground Fault Current Interrupter" (GFCI) is a part of the power circuit, and it serves in an attempt to very quickly shut off power if a potentially deadly leakage to ground (e.00 330 12.38 86 1. deep (minimum) outlet box, this remote has SAFE/SILENCE and HAZARD indicators.0064 ohms/foot.00 305 6. The alarm condition does not mean there is imminent danger to the patient or anyone else. Line Isolation monitor testing and replacement services Iso-Gard Series D microprocessor-controlled line isolation monitor (LIM) manufactured by Schneider Electric. Reduced Shock Hazard A. Annunciator Panel for 5 to 8 Circuits This unit is available either surface or flush-mounted for use with a total quantity of 5 to 8 circuits.00 508 12.00 127 7. However, the amount of current that can flow must always be less than the current rating of the fuse or circuit breaker.8. The minimum claimed hazard level seems to be 10 microamperes (?A) with a maximum level given at 180 ?A.0 kVA (4) Number of 30A green ground jacks 1 Line Isolation monitor testing and replacement services Inspection and Testing one 2 Line Isolation monitor testing and replacement services Inspection and Testing two 3 Line Isolation monitor testing and replacement services Inspection and Testing three 4 Line Isolation monitor testing and replacement services Inspection and Testing four 5 Line Isolation monitor testing and replacement services Inspection and Testing five 6 Line Isolation monitor testing and replacement services Inspection and Testing six 0 Line Isolation monitor testing and replacement services Inspection and Testing none (5) Number of 120 V power receptacles 1 Line Isolation monitor testing and replacement services Inspection and Testing one 2 Line Isolation monitor testing and replacement services Inspection and Testing two 3 Line Isolation monitor testing and replacement services Inspection and Testing three 4 Line Isolation monitor testing and replacement services Inspection and Testing four 5 Line Isolation monitor testing and replacement services Inspection and Testing five 6 Line Isolation monitor testing and replacement services Inspection and Testing six 7 Line Isolation monitor testing and replacement services Inspection and Testing seven 8 Line Isolation monitor testing and replacement services Inspection and Testing eight 0 Line Isolation monitor testing and replacement services Inspection and Testing none (6) Type of 120 V power receptacles R Line Isolation monitor testing and replacement services Inspection and Testing 20A, red hospital-grade duplex (NEMA 5�20R) I Line Isolation monitor testing and replacement services Inspection and Testing 20A, ivory hospital-grade duplex (NEMA 5�20R) B Line Isolation monitor testing and replacement services Inspection and Testing 20A, black hospital-grade duplex (NEMA 5�20R) T Line Isolation monitor testing and replacement services Inspection and Testing 20A, brown hospital-grade duplex (NEMA 5�20R) L Line Isolation monitor testing and replacement services Inspection and Testing 20A, black hospital only, locking-type receptacle (Hubbell Line Isolation monitor testing and replacement services Inspection and Testing 23000HG or equivalent) 0 Line Isolation monitor testing and replacement services Inspection and Testing No 120 V receptacles (7) Configuration of 208 or 240 V receptacle Line Isolation monitor testing and replacement services Inspection and Testing 1 The circuit breaker matching the selected receptacle is installed at the factory in the 208 V or 240 V section of the panel's interior., by standing on it, or on a floor or other physical structure that has good conductivity to the earth) and then by accidentally touching just one wire -- the black ("hot") wire. Use these panels for three-phase loads only; they cannot be used to supply power to 120 V single-phase loads. Isolated Power Panels Isolated Power Panels BENDER's standard hospital panel provides isolated power service and protection to operating rooms and other critical care areas.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 10 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolated Systems Give special consideration to the following potential electrically susceptible patient areas: Line Isolation monitor testing and replacement services Acute care beds Line Isolation monitor testing and replacement services Angiographic labs Line Isolation monitor testing and replacement services Cardiac catheterization labs Line Isolation monitor testing and replacement services Coronary care units Line Isolation monitor testing and replacement services Delivery rooms Line Isolation monitor testing and replacement services Dialysis units Line Isolation monitor testing and replacement services Emergency room treatment areas Line Isolation monitor testing and replacement services Human physiology labs Line Isolation monitor testing and replacement services Intensive care units Line Isolation monitor testing and replacement services Operating rooms Line Isolation monitor testing and replacement services Post-operative recovery rooms UL 2601-1 This is the UL Standard against which all medical and dental equipment is tested by the Underwriters' Laboratories. 56A was incorporated into a new standard, NFPA No. Courtesy of Steven Engineering, Inc. The Iso-Gard LIM is manufactured in the United States by Schneider Electric. It is the purpose of this document to explain the other advantages that Isolated Power Systems offer. Such occurrences on an Isolated Power System would, as described above, result in the LIM alarming and a warning being issued of potential fault hazard. This is the most controversial section. Typical Operating Room Ground System Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG Conductor Power/Ground Module RM 120-4N Power/Ground Module RM 120-4N Power/Ground Module RM 120-4N Size Conductor Per Code Size Conductor Per Article 250 of NEC Substation Distribution Panel Isolation Panel Courtesy of Steven Engineering, Inc. The electrical portion of the motor must be completely insulated from the conductive enclosure. On a 120 V system, this corresponds to 600 ?A when measured through a milliammeter connected between line and ground. If an optional power ground module is used, two circuits should be used.00 305 Safe/Silence Hazard Stainless Steel Trim IA12CI Dual Dimensions: Inches mm 13.3. Courtesy of Steven Engineering, Inc. Once a ground fault is detected, the test pulse generated by the LIM2010 is scanned by the EDS491/EDS461 to locate a ground fault down to the load level. At the same time, the Iso-Gard LIM uses an advanced methodology to monitor hazard current without interfering with other sensitive patient monitoring equipment.00 305 Dual Dimensions: Inches mm Wiring Diagrams and Dimensions H1 H2 Low X1 X2 Voltage Electrostatic Shield High Voltage Ground Bus (Space for 25, 6-24 AWG, including 1 lug for 1/0. When designing the system, use it in conjunction with NFPA No. In conclusion, we feel Isolated Power supplies special protection against electrical shock in "wet locations" or any area where the interruption of power cannot be tolerated.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 54 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Remote Alarm Indicators Remote Alarm Indicators Panel-Mounted Indicators Panel-mounted indicator alarms are designed for use with Square D brand isolated power panels. GROUNDED SYSTEM & BROKEN GROUND & HOT WIRE TO CASE & PATIENT GROUNDED This scenario can easily occur in a non-isolated power system operating room with faulty equipment and metal surgical equipment (or the bed) touching the patient. This test can also be conducted with an 0�0.00 305 8. Permanently Installed Ground System (Hard Wiring) Providing proper grounding for all electrical devices assumes that they connect to a sufficient ground system which interconnects to provide an equipotential ground plane for the patient. Under some types of ground faults, 120 V equipment can be subjected to higher than anticipated line-to-ground voltages. The control of these circuits is important not only for the safety of turning them on and off, but they also turn the remote alarm indicators on and off at the same time. the "isolated" system is no longer isolated, but rather is grounded, thus only one additional fault could result in a shock). W x 4 in. stainless steel door w/lock and key Primary and Secondary Circuit Breaker Shaded areas denote possible conduit entrance Note: Conduit entrance on this side is not available for 15 and 25 kVA panels. The most common scenario in which a shock occurs is where a grounded ("neutral voltage") patient touches a "hot" wire which exists at a non-zero voltage potential � the electrical current that subsequently passes through the patient can be described as I Line Isolation monitor testing and replacement services Inspection and Testing V/R, where V is the difference in voltage potential between the "ground" (0) and the "hot" line (~ 120V for a standard wall outlet). The operator can now choose to remove the equipment or continue to use it by taking extra caution that this may cause a serious hazard to the patient or operator should either come into contact with the other line conductor. should be demanded for use in 120 V, 208 V, and 240 V applications.50 343 Ground Receptacle 30A Twist to Lock Power Lock Receptacle 20A Hospital Use Only 14 Gauge Stainless Steel 4. These locations must meet class I division requirements and must have isolated power systems. The NFPA No.00 254 64. Even if a person contacts two pieces of metal, both at 10 V, a current path will not develop. The level of current would be high enough to be deadly. The GFCI detects this quickly, and shuts off power to the system. Here is a video documentation of a previous isolated power system inspection performed (in English and Spanish) at Kindred Hospital in South Bay, California. This equipment includes elapsed time indicators for the operating room.50 89 15.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 66 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories Accessory Equipment Battery Pack (MCTBP) This optional battery pack is designed for use in conjunction with the model MCT12B digital clock.00 152 5. This would have warned you of the single fault somewhere in the devices present in the room. 99, which was updated in 1984, 1987, 1990, 1993, 1996, and 1999, and in Chapter 4, which was updated in 2002. This is the first step toward having a working system, but it is only one of four ingredients that make up a superior system. Liquid spillage, cable damage, equipment misuse, or just plain heat aging through continued usage are all factors which may contribute to the decline in the insulation value. Three-phase isolation panels can range in size from 3. It has been the intent of this paper to try to explain to the decision-makers, in layman's terms, some of the main benefits to having isolated power in their facilities. This reduces the integrity of the isolated system by partially grounding it. 8. Flush Catalog Number Surface Catalog Number 3H5S11DDIL 3H5S21DDIL 3H5S31DDIL 3H5S41DDIL 3 120 208 240 277 120 30A 20A 20A 15A 8-20 A 53020BB OR 29540 OR 27520 3SLP116 3SLP216 3SLP316 3SLP416 5H5S11DDIL 5H5S21DDIL 5H5S31DDIL 5H5S41DDIL 5H5S51DDIL 5 120 208 240 277 480 60A 30A 30A 25A 15A 5SLP116 5SLP216 5SLP316 5SLP416 5SLP516 6H5S11DDIL 6H5S21DDIL 6H5S31DDIL 6H5S41DDIL 6H5S51DDIL 6. The LIM2010 is intended for use as part of an isolated power system that conforms with the applicable requirements of ANSI/NFPA 99, ANSI/NFPA 70, and CAN/CSA-C22. The amount of equipment present varies by hospital, affecting the complexity of the program.5 kVA transformer. Isolated Power System Inspection and Testing Power Ground Module Courtesy of Steven Engineering, Inc. Duplex Receptacle 20A Hospital Grade (4) Copper Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG RMSI504NI 4 Ivory Single Receptacles and 4 Ground Jack Receptacles RMDR504NI 4 Red Duplex Receptacles and 4 Ground Jack Receptacles RM504NI 4 Power Lock Receptacles and 4 Ground Jack Receptacles Dual Dimensions: Inches mm Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. What the Alarm Means When the monitor is alarming, there is a single fault in the system, but there still needs to be another one in order to deliver a shock. This enables the engineer to perform maintenance more conveniently and efficiently. There are distinct advantages to integrating power ground receptacles into one enclosure, rather than in individual power receptacles scattered around the room. More important, no room air circulates through the transformer compartment, removing the danger of bacteria growth in the warm compartment. In the event of power outage, both clock and timer functions will continue to work for at least 24 hours.00 1092 W A L L 10 6 7 13 9 1 2 8 3 12 14 11 Item Description Item Description 1 Isolation Transformer 3 kVA 120-120 8 Ground Bus Bar 2 Iso-Gard Line Isolation monitor testing and replacement services 9 Digital Elapsed Timer/Clock 3 Circuit Breaker Panel with: 10 Control for Digital Elapse Timer/Clock 1 Isolated Power System Inspection and Testing Primary Circuit Breaker � 30A, 2 Pole 11 Hazard Indicator with Push-to-Test 8 Isolated Power System Inspection and Testing Secondary Branch Circuit Breakers � 20A, 2 Pole 12 AM/FM, CD Stereo System 4c Power Lock Receptacle 13 Speaker for Stereo System 5c Single Receptacle, 20A, Hospital Grade 14 X-Ray Film Illuminator 6 Duplex Receptacle, 20A, Hospital Grade 15 Trim Lock 7 Ground Jack, 30A, Green c Available, but not shown in illustration. When considering system size, we must include all wiring between the circuit breakers in the isolated panel and their receptacles. This unit has three elapsed-time indicators and one clock integrated into a single, compact enclosure. Line Isolation monitor testing and replacement servicess from PG LIFELINK continuously monitor the Isolated Power System in the operating room and detects any faults immediately. For example, the grounding conductor in a power cord is Line Isolation monitor testing and replacement services Inspection and Testing 18 AWG; it represents about 0. XR29420 53015BB 53019BB 15XR22 15H5S23DDCI 208 240 90A 15XR23 15H5S32DDCI 240 208 90A 15XR32 15H5S33DDCI 240 240 90A 15XR33 15H5S42DDCI 277 208 90A 15XR42 15H5S43DDCI 277 240 90A 15XR43 15H5S52DDCI 480 208 40A 15XR52 15H5S53DDCI 480 240 40A 15XR53 25H5S22DDCI 25 208 208 125A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof.2. The panel can be applied to both critical systems and normal system power. Use minimum fills for conduits; this results in a better random lay of the conductors within the conduit, which further reduces the capacitive coupling.2 � 106 � 120 Line Isolation monitor testing and replacement services Inspection and Testing 119. BiomedRx services isolated power systems and line isolation monitors manufactured by: Amsco Auth Bender Crouse Hinds Edwards Electromagnetic Industries (EMI) Federal Pacific Federal Pioneer General Electric Hevi-Duty Hill-Rom Hospital Systems Isotrol Measurement Engineering Limited (MEL) Post Glover Russell & Stoll Square D Grainger Schneider Here is a video discussing recent controversies concerning the use and inspection of isolated power systems and line isolation monitors.00 127 7. We are the first organization to offer online training for biomedical equipment maintenance technicians.00 559 42. Line Isolation monitor testing and replacement services Wet Locations: patient care areas normally subject to wet conditions while patients are present. Iso-Gard LIM Courtesy of Steven Engineering, Inc. To perform the test, inject 20 A between the ground bus in the isolation panel and the grounded points on receptacles and ground jacks. If, on the other hand, the drill is powered from an isolated circuit, and the ground from the drill enclosure is disconnected, there is little potential for current to flow through the drill user.4. 99 and the NEC. The potential difference between exposed conductive surfaces in the patient vicinity is checked; the difference cannot exceed 20 mV across a 1000 ? resistor under normal operation.00 127 5. Section 3. The 5 kVA isolation transformer from Schneider Electric is capable of a 150Line Isolation monitor testing and replacement services Inspection and Testing continuous overload within its maximum designed temperature. This panel is perfect for smaller applications where the facility has up to four operating rooms. Flush Catalog Number Surface Catalog Number 3H5S11CDDI 3H5S21CDDI 3H5S31CDDI 3H5S41CDDI 3 120 208 240 277 120 30A 20A 20A 15A 8-20A IC24440 53014BB 53018BB See note 2 5H5S11CDDI 5H5S21CDDI 5H5S31CDDI 5H5S41CDDI 5H5S51CDDI 5 120 208 240 277 480 120 60A 30A 30A 25A 15A 8-20A IC24440 53014BB 53018BB See note 2 7H5S11CDDI 7H5S21CDDI 7H5S31CDDI 7H5S41CDDI 7H5S51CDDI 7. Order the appropriate number of circuit breakers Line Isolation monitor testing and replacement services Inspection and Testing QO220. As with all testing, the values of leakage found at the time of test were just that. For a 120 V system, this compares to 600 ?A. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs.3. A divider in the unit's backbox separates the systems from top to bottom and front to back. D Courtesy of Steven Engineering, Inc. Line Isolation monitor testing and replacement services All branch circuits are located in one panel.00 1829 20. A wet location requires special protection against electrical shock.50 343 Ground Jack Receptacle 30A Twist to Lock 14 Gauge Stainless Steel 18 Lugs for Line Isolation monitor testing and replacement services Inspection and Testing 6-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 1 Terminal Block for Line Isolation monitor testing and replacement services Inspection and Testing 0-Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG 4.00 178 4. Discuss the methods with the electrical consultant, hospital administration, and hospital radiology staff. In order for a piece of equipment to take advantage of this safety mechanism, it must be connected to the primary wiring system (which is grounded) via an isolation transformer (for a schematic diagram, see Morgan and Mikhail Figure 2. When writing specifications, we suggest choosing an isolated transformer rated at 5 kVA, having a continuous overload capability of 25 to 50Line Isolation monitor testing and replacement services Inspection and Testing . Isolating the operating room system from normal building service is important. The shield's attenuating characteristics prevent most of the signal from feeding into the distribution system and through it into other treatment or monitoring equipment. This is not true! Today medical and nursing sciences are becoming progressively more dependent on electrical apparatus for the preservation of life of hospitalized patients. Doctors will commonly require simultaneous timing of surgical procedures; the Square D brand surgical chronometer fills this need.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 25 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Line Isolation monitor testing and replacement services The LIM is tested as installed in the complete isolated system.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 56 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Power/Ground Modules Power/Ground Modules Power/Ground Modules Isolated Power System Inspection and Testing 120 Series Where room ground extensions and power receptacles are both required, this module offers convenience and saves much labor in field wiring. There is no certain way to prevent these faults; however, their magnitudes can be kept to a minimum through the use of an isolated power system. Isolated Power Systems � Explanation 4. After all tests have been successfully completed, a written certification will show that all systems comply with codes, good installation practices and specifications. ISOLATED SYSTEM & HOT WIRE TO CASE In this situation, the Line Isolation monitor testing and replacement services will immediately detect the connection between EITHER of the isolated wires, and the case of the appliance, because all metallic cases are connected to ground. BiomedRx is a home for the brightest and best minds in the biomedical engineering industry. If there is good contact between the live conductor and grounded enclosure, sufficient current will flow to disengage the circuit breaker or blow the fuse. The type EDD LIM still uses a switching circuit and still causes interference with patient monitoring equipment.0 kVA copper wound, low leakage, with electrostatic shield.437 Diameter Mounting Holes 11 21. A single ground fault condition will also not trip the main circuit breaker. Transformer Construction Receptacle Black Wire Core Steel Secondary Winding Primary Winding Isolating Transformer White Wire Courtesy of Steven Engineering, Inc. THE ISOLATED POWER SYSTEM (IPS) Diagram 3 shows the schematic representation of an Isolated Power System. The LIM2010 is a full-featured device which includes a seven-segment display, digital display, and easy-to-read LED bar graph, connection monitoring, and compatibility with BENDER's ground fault location system and communication network.8. Whatever the correct level, between 10 and 180 ?A, it is still only a fraction of the level hazardous to medical attendants serving the patient. Line Isolation monitor testing and replacement services Totally enclosed, non-ventilated design helps prevent air-borne dust, lint, or germs from recirculating through the panel.anest.00 102 3. Even if the ground is intact, not enough current flows to disengage the circuit breaker or blow the fuse. Ideally suited for: Line Isolation monitor testing and replacement services Locations where space is limited Line Isolation monitor testing and replacement services Installations requiring power for both typical hospital equipment and x-ray / laser receptacles Isolated Power Panels Dual System Isolated Power Panels BENDER dual system isolated power panels contain two complete isolated power systems. The LIM also performs an automatic ground fault test on any cord-connected appliance that is plugged into one of the Isolated Power receptacles. Patient Care Areas Article 517 defines three types of patient care areas: Line Isolation monitor testing and replacement services General Care Areas: patient bedrooms, examining rooms, treatment rooms, clinics, and similar areas. Among these considerations are: Line Isolation monitor testing and replacement services Operating and panel face temperatures Line Isolation monitor testing and replacement services Sound levels Line Isolation monitor testing and replacement services Minimum leakage Line Isolation monitor testing and replacement services Ease of maintenance Line Isolation monitor testing and replacement services Interchangeability of components Line Isolation monitor testing and replacement services Pleasing appearance Line Isolation monitor testing and replacement services Ease of installation Courtesy of Steven Engineering, Inc. The cord's overall diameter is 5/16 in.50 (4) .2. You can think of it as a "leakage" current, even though it is a virtual leakage current; it may or may not exist.00 203 9.00 381 32. To conduct these tests, disconnect all secondary equipment from the secondary circuits.00 813 12. Ground detectors were standard equipment until about 1970, so many of these units are still in use. Upgrade to a digital MARK V LIM. One of them is usually black, the other white.0 5. As previously mentioned, many large hospitals may have well in excess of 10,000 pieces of equipment.0 5. Back boxes for the 50 Series are customer provided.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Remote Annunciator Panels 61 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Annunciator Panel for 9 to 12 Circuits This unit is available either surface or flush-mounted for use with a total quantity of 9 to 12 circuits.5 120 208 240 277 480 80A 45A 40A 35A 20A OR 29540V3 3 Vented trim.2. The technical complexities of today's hospitals require all involved parties to have a thorough understanding of the hospital's objectives. However, checking anesthetizing and critical care areas more frequently than general patient areas is recommended.00 864 12. CONCLUSION We have examined how the Isolated Power System can help protect the patient from electrical shock hazards. Section 6. XRIAI Dimensions Hinged Door 12 Gauge Stainless Steel Front Trim Door Latch X-ray Receptacle 8. For detailed information on the Iso-Gard LIM, see page 62 of this bulletin, or request the Schneider Electric bulletin covering line isolation monitors.00 508 30.00 762 74.00 178 . Copper Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Ground Jack - 30A Twist-to-Lock Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG Stainless Steel Cover Plate GS1204NI GS504NI Dual Dimensions: Inches mm 3.5 12 4 4 Backbox 53008BB Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing 12 4 4 Courtesy of Steven Engineering, Inc.).0 1067 12. RA1WM The RA1WM consists of the RA1 remote alarm indicator and a stainless steel, decorator-style cover plate. The Isolated Power System contains a high quality shielded isolation transformer which provides a convenient and effective means of greatly reducing or even eliminating line-to-line and line-to-ground noise on voltage feeders. Line Isolation monitor testing and replacement services Hazard current alarm levels of 2." Anesthetizing Location Classifications As with NFPA No. The second ingredient has been discussed but bears repeating: there must be good communication between the parties planning the system for the hospital. Operating Room Layout Before the electrical design of an operating room begins, some important information should be acquired from hospital personnel. The entire installation of the isolated equipment is inspected for conformance with applicable codes to ensure no code is violated. It may be the "last one plugged in", making it easier to find.1 of NFPA99 2012 addresses Maintenance and Testing of the Electrical System.00 25 4.ground fault protection, ground fault, earth fault, grounding, earthing, gfci, gfcb, electrical shock, electrocution, UL943, electricity, protection, bender, k-tec, ktec, startco, fmt, trifox, pdi, chris bender, steve kay, ground fault relays, ground fault circuit interrupters, electrocuted, smc electrical, consol, consolidation coal, coal, line power, mining safety, msha, shock, predictive maintenance, ground continuity, msp, dtec, patton and cook, marine safe, motor safe, motosafe, cutler hammer, ground fault protection, isometer, insulation monitoring, rcm, imd, ground continuity monitor, slu, rcd, trinitics, dc, ac, arc fault, solar, gen-sets, oil, petrochemical, ground detector, The LIM2010 line isolation monitor (LIM) measures the total hazard current (THC) in an isolated power system. Leakage Current.3. NFPA No. Thus the current flow through the human involves connection to the black wire only -- and back to the power system via the house grounding connection back at the service entrance. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. This panel would contain the secondary breakers needed and use either the receptacle module switch or push button control. If a human is being harmed, there is a high likelihood that the current in the black wire ("hot") temporarily exceeds the current in the white wire ("cold"). A cup of very hot coffee would not be a hazard for a normal person; however, it is a potential disaster for the nerve-impaired individual. The IPS is a system in which the transformer neutralground connection has been deliberately omitted. Each operating room was required to have a minimum of six ground jacks. The system hazard current must be kept well below maximum to allow for normal current leakage, which will come from the equipment operating on this power supply. An alarm goes off if an unacceptably amount of current to the ground is possible (i. To comply with National Fire Protection Association (NFPA) 99 requirements for the maximum hazard current contributed by the branch circuit conductors (impedance of isolated wiring) on isolated power systems, the number of branch circuit breakers should be limited to four. All portable equipment has the potential for leakage current. Many feel that since hospitals no longer use flammable gases, isolated power is of no benefit. 4. QO210 through QO260. With isolated power systems at one fault to ground the circuit breaker does not trip, maintaining power to the equipment. Back boxes for isolation panels and other modules can be shipped to the job site for "roughing-in" ahead of the interiors.g. Line Isolation monitor testing and replacement services Use completely sealed and insulated remote controls for use in patient beds.5 7. UL derives its standards for performance requirements from the applicable NFPA standards and the NEC. Section 6.0 1016 42.98 177 Clock Display Timer MCT12B Dual Dimensions: Inches mm 3. This is important to note since this could affect the overall installation of an isolated power system. Disabling the alarm -- unless the surgery is emergent -- is not a prudent response. This panel incorporates: Line Isolation monitor testing and replacement services The isolation transformer, which is a standard low-leakage, electrostatically shielded, 220 �C insulation system Isolated Power System Inspection and Testing 80 �C temperature rise, 30 dB sound level isolating transformer Line Isolation monitor testing and replacement services A primary circuit breaker Line Isolation monitor testing and replacement services Eight secondary 2-pole circuit breakers Line Isolation monitor testing and replacement services A Square D brand Iso-Gard LIM The panel is non-ventilated and has a Line Isolation monitor testing and replacement services Inspection and Testing 304 stainless steel trim with a brushed finish. You should observe a slight meter deflection, indicating the monitor hazard current plus the hazard current for the isolation panel. The entire panel assembly is listed under UL Standard 1047, Hospital Isolated Power Systems. 99 recommends the following formula be used to fault the LIM: R Line Isolation monitor testing and replacement services Inspection and Testing 200 X System Voltage For example, if a system measures 120 V, the fault impedance would be: R Line Isolation monitor testing and replacement services Inspection and Testing 200 X 120 Line Isolation monitor testing and replacement services Inspection and Testing 24 K ohms Ground Test 6. Such as: 1. If the LIM is calibrated to sound an alarm when 2000 ?A flow from either line to ground, approximately one-half of the capacity of the total system would be dedicated to the LIM.00 838 Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services Hinged Door with Lock and Key 14 Gauge Stainless Steel Transformer (4) . Additional circuits should be added with caution, as this will increase the leakage. A push button station located in the panel controls the interlocking system. Hopefully, this section will help them fill this communication gap. When a Square D brand controlled power panel is used, locate it as centrally as possible in the area it will serve.29 84 160Line Isolation monitor testing and replacement services Inspection and Testing 140Line Isolation monitor testing and replacement services Inspection and Testing 120Line Isolation monitor testing and replacement services Inspection and Testing 100Line Isolation monitor testing and replacement services Inspection and Testing 800Line Isolation monitor testing and replacement services Inspection and Testing 60Line Isolation monitor testing and replacement services Inspection and Testing 40Line Isolation monitor testing and replacement services Inspection and Testing 20Line Isolation monitor testing and replacement services Inspection and Testing SILENCE/ SILENCIO HAZARD/PELIGRO TOTAL HAZARD CURRENT IS mA SAFE/ SEGURO mA ALARM LEVEL TEST/ PRUEBA Line Isolation monitor testing and replacement services Inspection and Testing ALARM LEVEL Line Isolation monitor testing and replacement services Inspection and Testing DE NIVEL DE ALARMA 6. Corrective steps are taken if improper operation is observed. The isolating transformer, circuit breakers, LIM, and control equipment are all mounted in an attractive flush-mounted enclosure. R Line Isolation monitor testing and replacement services Inspection and Testing E I C Line Isolation monitor testing and replacement services Inspection and Testing 1 0. It is not the amount of voltage a person is exposed to, but rather the amount of current transmitted through the person's body that determines the intensity of a shock. A few minutes, hours, or even a few days later, the equipment may have been exposed to environmental conditions which caused further decline in insulation integrity. The unit contains a bus bar with 18 lugs for field connections and has a Type Line Isolation monitor testing and replacement services Inspection and Testing 304 brushed stainless steel cover plate.50 241 Top View of Ground Bus Stainless Steel Cover Trim 18 Lugs for Line Isolation monitor testing and replacement services Inspection and Testing 6-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 1 Terminal Block for Line Isolation monitor testing and replacement services Inspection and Testing 0-Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG GS1200I Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.0 1016 (4) . Surgical facility panels are custom designed and assembled; this allows each hospital to specify the individual components needed in that hospital.8. M5IAI and M5IAI50 Some physicians prefer to monitor the hazard current of the isolated system as devices are energized during surgery. C. Secondary Wiring Primary wiring in an operating room (from the main alternating current power supply) is normally grounded.00 787 8.0 mA under normal line voltage conditions. holes 38 14 (2 Top, 2 Bottom for mounting) Shaded areas denote possible conduit entrance Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Panel Is field expandable to 16 secondary branch breakers (QO220) Low Voltage Primary Circuit Breaker Electrostatic Shield High Voltage LIM Terminal Board Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services H1 H2 X1 X2 L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Transformer 7. Equipment that connects directly to patients should have its patient leads checked for leakage current. Each hospital must choose the best option for its purposes. BENDER isolated power system equipment are designed in strict compliance with UL 1047, UL 1022, and UL 50. AX1 X1 H1 AX2 H2 X2 C1 A1 A2 A3 B1 B2 B3 C2 C3 D1 D2 D3 8 station interlock switch w/Off position station "A" shown. Recently, manufactures have rescinded their notation in their specs for XHHW and XHHW-2.5 13. You can learn more about hospital isolated power distribution systems on a .7 mA. Line Isolation monitor testing and replacement services Ground bus bar with 25 terminals.562 dia. This panel is operated from the receptacle module in the room. No current flows if either secondary conductor of the transformer touches the plumbing (ground). The unit includes four power receptacles, four twist-to-lock ground jacks, and a ground bus with a generous number of lugs for external ground connections. It is mounted on a stainless steel trim plate, and includes an audible alarm. Nowhere else can one find these elements: lowered body resistance, more electrical equipment, and conductors such as blood, urine, saline, and water. Reviewing them not only helps determine requirements for a system, but helps identify the equipment currently used in the hospital. NOTE: Note: Customer must specify NEMA configuration of receptacle when ordering module Optional accessories that can be included with the 3-phase isolation panel follow: Item Catalog Number Description Panel Mounted Indicator Alarms ORIC-A Green, amber, and red indicating lights and audible alarm mounted on front trim ORIC-A5C Green, amber, and red indicating lights, audible alarm, and microammeter mounted on front trim X-Ray/Laser Indicator and Receptacle Module XRT30-IAI X-ray receptacle with remote indicator alarm, Hubbell receptacle Line Isolation monitor testing and replacement services Inspection and Testing 2720, 30 A XRT60-IAI X-ray receptacle with remote indicator alarm, Hubbell receptacle Line Isolation monitor testing and replacement services Inspection and Testing 8460, 60 A 53007BB Backbox for x-ray receptacle and indicator module1 1 Backbox dimensions: 12 in. Courtesy of Steven Engineering, Inc. A clock and elapsed-time indicator are required for most operating rooms, enabling the surgeon and anesthetist to easily see clock time and elapsed time. The team approach benefits all members of the hospital team, for example: Line Isolation monitor testing and replacement services The architect can make the proper provisions for mounting the equipment; this results in superior aesthetic quality. For various safety reasons (there are advantages to grounded systems), one of the 2 wires supplying your outlet with power is connected to earth ground, via a grounded connection back at your service entrance box , somewhere in your house. If we assume that a person has a body resistance of 1000 Ohms, and comes into contact with the live conductor, we can expect the following result, as shown in the equivalent circuit, Diagram 2. Contact Schneider Electric Medical Products for more information. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. The NEC recognizes that hospital patients are more susceptible to electrical shock than are normally healthy individuals. Humans, however, generally get harmed by being in physical contact with the ground (e. A count may be interrupted, resumed and reset at the remote control MK1550. This unit was the first of the low leakage LIMs. When laying out the operating room electrical system, the location of power and ground receptacles is significant. Grounded Wiring Modern housing systems have grounded wiring, in which both the neutral (connected to power company neutral wire) and grounded wires (connected to equipment) are grounded., though a human) is detected.00 508 20.00 1016 32.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Dual Output Voltage Isolation Panels 39 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved The interior catalog number is a combination of codes, which are described in the "Interior Catalog Number Selections" table that follows the example below. For more than 8 circuits, contact Schneider Electric Medical Products.0 127 29.2 � 106 Ohms I 50 � 10-6 C Line Isolation monitor testing and replacement services Inspection and Testing 1 Line Isolation monitor testing and replacement services Inspection and Testing 1 w. Other factors contributing to electrical susceptibility are patients with hypokalemia, acidosis, elevated catecholamine levels, hypoxemia, and the presence of digitalis.0 686 7. Keep in mind no perfect insulators exist either.5 38 27.00 1372 29. Something for nothing �noise reduction 4. Advantages The duplex hospital isolation panel provides the following advantages: Line Isolation monitor testing and replacement services Slim design to minimize the amount of horizontal wall space used in the operating room. The alarm must activate when the integrity of an isolated ungrounded system degrades to the extent that 5 mA of current will flow from either secondary conductor to ground through a zero impedance fault. This includes standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff. A total of 90 EDS devices may be interconnected via RS-485. Field wiring simply involves the connection of the primary feeders and secondary circuits to clearly marked terminals. NFPA 99 10. Wire resistance is inversely proportional to its cross-sectional area. A given area may contain equipment that requires power greater than the isolated system provides; but the hospital will not use every piece of equipment at the same time. When installed, such a power system shall conform to the requirements of 6. 3. If no receptacle is selected, the section is field expandable to two branch circuit breakers by ordering Schneider Electric catalog no. However, these codes and standards are continually changing and are also subject to local changes and interpretations. Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.0 178 14 Typically 5. Long C-25 Clip with Slip-On Insulator Furnished P753N Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. An activated alarm does not mean hazardous current is flowing.5 kVA panel is available with non-vented trim by using a 10 kVA transformer. Although extension cords offer flexibility, they are often abused. The only indicator alarm operating is the energized circuit. Systems in the field have been observed to allow as much as 30 mA (30,000 ?A) to flow from line to ground without sounding an alarm. Although the panel is designed to serve the needs of a coronary care or intensive care bed, it has been widely applied to provide power within special procedure rooms, cardiovascular laboratories, and general operating rooms.) Schematic representation of 1000 Ohm person in contact with live conductor I Line Isolation monitor testing and replacement services Inspection and Testing V Line Isolation monitor testing and replacement services Inspection and Testing 120 Line Isolation monitor testing and replacement services Inspection and Testing 120 mA R 1000 1.00 406 5. Line Isolation monitor testing and replacement services Operation either as a single-phase or three-phase unit. Order circuit breaker catalog number QO220. The main ground connection in the module accommodates up to a Line Isolation monitor testing and replacement services Inspection and Testing 1/0 cable.00 813 74. Therefore, this handbook does not cover the flammable location in any detail. Line Isolation monitor testing and replacement services The necessary test equipment must be leased/purchased, and be kept on site. This requires a second fault or electric failure to be present in the system before a true hazardous condition exists. Our representatives are professionals in the installation, repair, calibration and preventative maintenance of all modalities of biomedical and medical imaging equipment.50 114 3.00 330 12. The ZT1590 has a dual-row, 7-segment display with large, red LED characters, easily read in high ambient light. The information contained here regarding codes and standards is current as of this writing. However, as this current increases, it can become a hazard to the patient.00 305 36. DANGER HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Line Isolation monitor testing and replacement services Use extreme caution, some of the following procedures are performed when circuits are energized. All fluorescent lighting should be on grounded power. Square D brand isolation power panels use the QO snap-in breaker as standard. Interior Trim Catalog Number Back Box Transformer Catalog Number Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker1, 2 1 All panels contain 8-20/2 branch breakers and are field convertible to 16-20/2 branch circuit breakers. System Capacity In selecting the capacity of an isolating transformer, remember that the patient care areas generally present an intermittent load condition and load diversity.5 15 12 4 Backbox 53006BB Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing 15 12 4 Auxiliary control MCT4RC 13. The special procedures and equipment required become more complicated with the degree of electrical susceptibility of the patient. Because the household appliance does not open a fuse or trip a circuit breaker the appliance places resistance between the two conductors. GROUNDED SYSTEM & GFCI BROKEN GROUND & HOT WIRE TO CASE In this scenario, the circuit breaker will not protect you, because of the broken ground wire.50 89 15.5 38 27.2. Ground Jacks In previous codes, provisions for grounding conductive non-electrical devices were dictated. The Iso-Gard LIM exhibits a 50 ?A monitor hazard current and an alarm band width of zero enabling the unit to sound an alarm at 5. Person 120mA 100 microamp (with 50 microamp initial leakage) (5. Examples of items that partially ground the system, without making direct connection to ground, include the following: Line Isolation monitor testing and replacement services Insulated wires enclosed in grounded metal conduit Line Isolation monitor testing and replacement services Electrical components within permanently installed electrical equipment Line Isolation monitor testing and replacement services Electrical components within portable devices housed in grounded enclosures (commonly referred to as the capacitance of the system) Because an isolated system can easily become grounded without giving any indication to the user, a way must be found to monitor the integrity of the isolation in the system. These difficult runs can be anticipated and provided for by using oversized conduits to ease the situation. Much has been written about current levels considered lethal for catheterized and surgical patients.2 of NFPA99 2012 addresses Record Keeping. Push button control can be substituted for the switch in the receptacle module. The line isolation monitor determines the degree of isolation between the two power wires and the ground and predicts how much current could flow if a second short-circuit were to develop.001 ohms/foot.4. Order the appropriate number of QO or QOB circuit breakers. It must state that only non-flammable anesthetics can be used in the room.1.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 6 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Hazards The following figure illustrates the origin and path of leakage current.0 1016 42. Volt. The XHHW and XHHW-2 insulation is still the choice since it comes closest to meeting the recommendation.00 102 13.4. The MK2430-11 features 12 digital inputs allowing messages from other technical equipment to be recorded and displayed. Line Isolation monitor testing and replacement services Use bedrails made of plastic or covered in insulating material. When manufacturers design and build complete systems, many factors are considered: proper and attractive packaging, convenient design, and ease of maintenance. Something For Nothing � Noise Reduction The increased use of sensitive electronic systems in the hospital environment has created a growing need to supply these systems with "clean" voltage, free of noise and transients.0 178 15. Isolation panels serving a single bed in a critical care area require only eight secondary breakers. At the same time, the panel's 120 V circuits can supply power to convenience receptacles, surgical lights, X-ray film illuminators, sterilizers, and other 120 V appliances commonly found in operating rooms. This creates a nightmare situation for the hospital electrician/biomedical engineer or whoever is in charge of equipment testing. When initially energized, a piece of equipment may operate correctly and be in a safe condition. Flush Catalog Number Surface Catalog Number 15H5S22DDI 15 208 208 90A 1-60 AMP Secondary Circuit Breaker XR29420 53015BB 53019BB 15XR22 15H5S23DDI 208 240 90A 15XR23 15H5S32DDI 240 208 90A 15XR32 15H5S33DDI 240 240 90A 15XR33 15H5S42DDI 277 208 90A 15XR42 15H5S43DDI 277 240 90A 15XR43 15H5S52DDI 480 208 40A 15XR52 15H5S53DDI 480 240 40A 15XR53 25H5S22DDI 25 208 208 125A 1-60 AMP Secondary Circuit Breaker XR29420 53015BB 53019BB 25XR22 25H5S23DDI 208 240 125A 25XR23 25H5S32DDI 240 208 125A 25XR32 25H5S33DDI 240 240 125A 25XR33 25H5S42DDI 277 208 125A 25XR42 25H5S43DDI 277 240 125A 25XR43 25H5S52DDI 480 208 65A 25XR52 25H5S53DDI 480 240 65A 25XR53 Wiring Diagram and Dimensions Transformer Line Isolation monitor testing and replacement services Typically 40. Clocks, Timers, & Communication Solutions Surgical Chronometer The ZT1594 surgical chronometer is a complete, microprocessor based system that displays time of day and three elapsed times.2 No. The 7. The power receptacles are "hospital only" locking-type receptacles. Rigid metal endoscopes, urological equipment and other metal used in surgery can make the connection to ground. MIN.0 305 (4) . The design prevents accidental entry into the transformer section when operating the circuit breakers or LIM test circuit. Ideally suited for: Line Isolation monitor testing and replacement services Locations where space is limited Line Isolation monitor testing and replacement services Renovations Surgical Facility Centers BENDER's custom designed surgical facility centers combine many key operating room components into one isolated power solution. Includes the MCTBP battery pack, see page 66.184 of NFPA99 2012 defines a Wet Procedure Location as "The area in a patient care room where a procedure is performed that is normally subject to wet conditions while patients are present, including standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff. Panel interiors include one 3-pole secondary branch circuit breaker (Type QO).00 102 Safe/Silence Hazard Stainless Steel Trim IA4CI Dual Dimensions: Inches mm 13. The dual output voltage panel has space for two secondary breakers for the 208 V or 240 V side of the panel. 1 ?A per ft of wire Courtesy of Steven Engineering, Inc. The system provides for a remote indicator alarm at each circuit outlet. We will first consider the situation of the pure IPS, without externally connected equipment (externally connected equipment only increases the system net capacitance and leakage resistance). 3 ?A per ft of wire XLP wire, metal conduit. In spite of this great versatility, all Square D brand modules interface with each other perfectly. Thus touching ground has little consequence to you, if you are in such a room. 99 addresses fire, explosion, and electrical safety in hospitals.5 kVA and 10 kVA Operating Room Panels Wiring Diagrams and Dimensions Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The duplex hospital isolation panel can also be used to satisfy requirements of NFPA 70, the National Electrical Code � (NEC) Article 517-19(a), Critical Care Areas.0 5. The human body acts as a large resistor to current flow.00 203 9. A 1 A Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.edu/simulations/ores. Volt. Enhanced features and improved functionality make this the most flexible LIM on the market today.html How much do you know about the power system of an operating room? Do you know when they can and cannot protect the patient? This simulation shows selected circuit pathways in an isolated system, a grounded system, and a grounded system with a GFCI (Ground Fault Circuit Interrupt. However, the following items should be found in every medical equipment testing program: Line Isolation monitor testing and replacement services An established procedure ensuring that equipment serves the purpose for which it is intended, and that it is safe, reliable, and the best choice for its purpose Line Isolation monitor testing and replacement services Specifications that must be adhered to by manufacturers before lease/purchase of equipment Line Isolation monitor testing and replacement services Adequate customer support from the manufacturer, ensuring technical assistance, repair, and consultation as needed Line Isolation monitor testing and replacement services Periodic inspections, calibration, and preventive maintenance Line Isolation monitor testing and replacement services Immediate, thorough inspections when equipment malfunction or shock is considered a possibility Line Isolation monitor testing and replacement services Close monitoring of services provided by outside vendors Line Isolation monitor testing and replacement services A logging/reporting system that provides effective control and record keeping Line Isolation monitor testing and replacement services In-service training to ensure safe, effective use of medical equipment Testing Personnel.50 343 Ground Receptacle 30 A Twist to Lock Red or Ivory Duplex Receptacle 20 A Hospital Grade 14 Gauge Stainless Steel 8.00 1067 8.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 23 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved B.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 46 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Three-Phase Isolation Panels Dimensions 42. Impedance includes both resistive and capacative readings. Presentation Dual Voltage Panels � System designed to support 120 V Surgical Applications as well as 208V (240V) Medical lectrical Equipment in one common back box and trim Duplex Panels � Allow for two systems to leverage one back box and trim Ideal for expanding needs in surgical applications for power needing multiple systems Reduced depth solution to supply one single circuit for 208V or 240V in one of the compartments well supplying the 120 V requirements from the other Compartmentalize with a none removable barrier supporting applications where both Standard and Emergency Power is required (Life Support) Standard Panels � Compact solution for all 120 V distribution power applications Control Panels � Designed to support multiple rooms with 208V (240V) Medical Electrical Equipment applications, PLC Controlled to limit the number of energized circuits Isolated Power Systems Isolated power systems offer an invaluable advantage: Early detection allows for critical systems to remain online in a single fault condition. Schneider Electric recommends that no more then four outlets (2 duplex receptacles) be fed from one circuit. The code no longer allows wire pulling compound to be used in conduits for isolated power systems.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 16 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Grounding This figure compares the degree of interference produced by the Iso-Gard LIM with older LIMs.) The M5IAI is the original remote indicator with a meter. Three-phase isolation panels can be supplied with up to four secondary branch breakers, which are rated from 10 through 60 amperes and are the 2-pole or 3-pole type.0 10. When specifying a surgical facility panel, consider which location is best for all concerned personnel.2. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. NFPA-99 requires yearly testing of Isolated Power Panels. High Voltage To Breakers in Panel To Ground Bus 120 Vac Power In Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The services of a factory technician are available from Schneider Electric. These two currents should be exactly identical, whatever they are. Annunciator Panel for 13 to 16 Circuits This unit is available either surface or flush-mounted for use with a total quantity of 13 to 16 circuits. If more circuits are required, consider the use of a second or even a third isolation power panel.00 178 22. The different compounds used in the manufacturing of the insulation have changed or are subject to change, and the 3. Time spent planning the changes will result in large dividends, provided the following parties are involved: Line Isolation monitor testing and replacement services Consulting engineer Line Isolation monitor testing and replacement services Hospital administrator Line Isolation monitor testing and replacement services Hospital engineer Line Isolation monitor testing and replacement services Chief of surgery Line Isolation monitor testing and replacement services Chief of anesthesiology Line Isolation monitor testing and replacement services Cardiologist Line Isolation monitor testing and replacement services Manufacturer's representative History During the 1920s and '30s, the number of fires and explosions in operating rooms grew at an alarming rate. This would increase system hazard current. Infants are more susceptible to electric shock because of their smaller mass, and thus lower body resistance.0 kVA to 25. NOTE: Mount unit at least 48 in.60 91 15.9 of NFPA99 2012 defines a Line Isolation monitor testing and replacement services as "A test instrument designed to continually check the balanced and unbalanced impedance from each line of an isolated circuit to ground and equipped with a built-in test circuit to exercise the alarm without adding to the leakage current hazard. Your analog line isolation monitor requires monthly testing. In the unshielded transformer in the figure above, this failure occurred at "X. The services of a factory technician are available from Schneider Electric. This means, for a piece of electrical equipment using a Line Isolation monitor testing and replacement services Inspection and Testing 18 AWG ground wire in a 15-ft power cord, no more than 416 mA of fault current could develop without exceeding the 40 mV potential difference requirement. XR29420 53015BB 53019BB 25XR22 25H5S23DDCI 208 240 125A 25XR23 25H5S32DDCI 240 208 125A 25XR32 25H5S33DDCI 240 240 125A 25XR33 25H5S42DDCI 277 208 125A 25XR42 25H5S43DDCI 277 240 125A 25XR43 25H5S52DDCI 480 208 65A 25XR52 25H5S53DDCI 480 240 65A 25XR53 Wiring Diagram and Dimensions Transformer Line Isolation monitor testing and replacement services Circuit Breaker Panel 14 ga. See accessories for more information. The factory trained technician performs the following on-site testing: Line Isolation monitor testing and replacement services All tests on the isolated system, ground network, and LIM are in accordance with Article 517 of the National Electrical Code and with NFPA No. Electrical accidents fall into three categories: Line Isolation monitor testing and replacement services Fires Line Isolation monitor testing and replacement services Burns Line Isolation monitor testing and replacement services Shock This section covers the subject of electrical shock. Circuit Breaker Protection All Schneider Electric hospital isolated systems include a primary circuit breaker and 2-pole secondary circuit breakers. In the past, projects run by capable consulting electrical engineers have required modifications costing several thousand dollars per operating room. Use the following equation for fault impedance: E Line Isolation monitor testing and replacement services Inspection and Testing System Voltage R Line Isolation monitor testing and replacement services Inspection and Testing Fault Impedance in Ohms I Line Isolation monitor testing and replacement services Inspection and Testing Alarm Trip Current-Monitor Hazard Current at Trip Point in Amperes For a capacitive fault, use the following equation: E Line Isolation monitor testing and replacement services Inspection and Testing System Voltage R Line Isolation monitor testing and replacement services Inspection and Testing Fault Impedance as Calculated Above in Ohms C Line Isolation monitor testing and replacement services Inspection and Testing Capacitance in Farads The LIM should alarm for an impedance of 10Line Isolation monitor testing and replacement services Inspection and Testing of this value; if it does not alarm, contact the manufacturer. Enclosures Enclosure back boxes are constructed of cold-rolled steel that is degreased, phosphatized, and finished in gray baked enamel.00 152 6 and 9 kVA, 3-Phase Flush Panel 6 and 9 kVA, 3-Phase Surface Panel 21. The only time a central system makes sense is when this location coincides with the closest placement of individual panels to each room. Conduct these tests before patient occupation. Dynamic Ground Detector. Active participation in committees of International and National Standards organizations has helped us develop ELECTRICAL SAFETY products that are in tune with the needs of the healthcare market. Primary Circuit Breaker Left Side Right Side Courtesy of Steven Engineering, Inc. Devices with broken or damaged ground wires should be taken out of service and repaired. Back boxes for the 120 Series are ordered separately.562" Dia. The electric drill has an electric motor which is completely enclosed in a conductive housing. Such patients cannot avoid or disconnect themselves from an electrical hazard that would be relatively harmless to a normal person. This control panel contains a set of controls for the timer and two push buttons to set the clock time display. In 1949, this committee published a new standard, NFPA No. Surgical facility centers provide isolated power protection while minimizing footprint and standardizing individual components required in the operating room. We may now reduce our equivalent circuit as follows: Now we can calculate what happens should our 1000 Ohm person come into contact with either L1 or L2 . Since quiet operation is important in hospital applications, Schneider Electric followed rigid design criteria to provide a virtually inaudible transformer core and coil unit.00 305 6. For more than 8 circuits, contact Schneider Electric Medical Products.0 737 5. Secondary Circuit Breaker Schedule Number of Breakers Load 4 8 receptacles in panel (2 per breaker) 2 4 receptacles in anesthetist's module (2 per breaker) 2 4 receptacles in surgeon's module (2 per breaker) 1 Surgical light 1 Clocks Courtesy of Steven Engineering, Inc.00 152 14.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 64 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories Dual Display Clock/Timer (MCT12B) This dual display timepiece is designed for surgical or patient care areas where simultaneous clock/timer displays are needed. 42. When the black wire touches the kitchen plumbing, there is a violent arc, much as if both conductors had touched each other. Calculate an external fault impedance once every six months.2 of NFPA99 2012 Line Isolation monitor testing and replacement services Tests states "The line isolation monitor (LIM) circuit shall be tested after installation, and prior to being placed in service, by successively grounding each line of the energized distribution system through a resistor whose value is 200 x V (ohms), where V equals measured line voltage. Line Isolation monitor testing and replacement services If included in the team, the hospital maintenance engineer will better understand the isolated system.00 203 42. For proper continuity, test the ground system associated with the isolated power system before its initial use. The value of 1000 Ohms may vary between less than 100 Ohms to 20,000 Ohms depending on the condition of the patient (moisture content, muscle condition, dry skin, etc.00 357 24.2.6. When this predetermined limit is exceeded, the green light goes out, the red indicator illuminates, and an audible signal sounds.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolated Systems 13 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Two paths to ground are possible, one down the ground wire in the cord into the receptacle ground, and one through the person holding the drill (who is grounded through the plumbing). Line Isolation monitor testing and replacement services Less installation labor than two panels. The new document includes the text of several other documents, such as: The material originally covered by NFPA 56A is now located in Chapter 3 of NFPA No. The staff uses the book to record maintenance and periodic test data.00 127 10. by 12 in.00 305 4.00 305 5. Isolated Power Systems � Explanation D. Older LIMs ISO-GARD LIM from SQUARE D � 0 5. This device was designed with the user in mind. Our testing service includes: Testing of ungrounded isolated power systems and wiring. The grounded system is excellent where unskilled operators or electrically unknowledgeable people come into contact with everyday equipment. Because the broken ground wire does not necessarily provide a leakage path from one of the 2 power wires to ground, the Line Isolation monitor testing and replacement services will not detect this problem.00 406 16." Section 6.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Controlled Power Panels 53 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Combination X-Ray Receptacle (XRIAI�XRIADI Series) With Indicator Module This unit contains a 60 A, 240 V single-phase approved X-ray receptacle plus a remote alarm indicator (described on page 54).00 406 Shaded areas denote possible conduit entrance Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. However, the resistance through the power cord ground conductor is significantly lower, providing protection for the patient. They may also lie in pools of fluid.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied. BENDER type HGC hospital grade ground cords are recommended for use with this configuration. See the table on page 39. Using the example as above, but with the black wire, the connections cause different results.0 5.00 330 4. The size of the hospital, presence of other hospitals in the area, and regional demographics will help each hospital make the appropriate decisions about testing personnel. A LIM is required to continuously check the resistance (impedance) of the total isolated ungrounded system to ground.00 1016 15. Courtesy of Steven Engineering, Inc.00 305 9. Although the shield makes the electrical design of the coil more difficult, these two features make it desirable: 1. Continuity of power 3. The low profile panel uses a common backbox for all voltages. Because of this, electrical design engineers should still plan for special grounding requirements in these areas. All of this information leads us to the conclusion that the patient environment is a prime target for electrical accidents. Answers There are no perfect electrical systems or infallible equipment to eliminate hospital electrical accidents. Testing Programs. This static charge could be a hazard to the patient and attendant if it ignited some flammable gas or material, or if it discharged to the patient as a shock. It is generally accepted that any time the normal body resistance of a patient is bypassed, the body becomes electrically susceptible.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Codes and Standards 7 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Codes and Standards It would not be practical to attempt to reproduce the codes and standards that affect the application of isolated distribution systems in hospitals. The RA1PM model consists of the RA1 remote alarm indicator and a stainless steel mounting bracket (RA1PMB).00 508 20.00 76 Transformer Hinged Door with Lock and Key Power Lock Receptacles 14 Gauge 20A Hospital Use Only (8) Stainless Steel Ground Jacks 30A (6) 1. Because this section is subject to individual interpretation by local Code authorities, work closely with these authorities before selecting the equipment to be powered from standard grounded systems. Consequently, patients must be protected through use of special procedures.00 305 16. Holes 1.00 178 42. The units are completely factory wired and tested. It consolidates 12 individual NFPA documents or standards into one document. Design Guide I.00 1118 8. This device was designed with the user in mind. Ensure the alarm will silence when the silence button is pressed." Section 6. Consulting engineers and plant operating engineers who specify and apply these isolating systems usually understand them; but they have difficulty passing this knowledge to laymen.e. Optional Accessories Optional items available with these panels are: Line Isolation monitor testing and replacement services Panel- or remote-mounted indicator alarms with or without analog LIM meter. The leakage consists of any current, including capacitively coupled current, not intended to be applied to a patient, but which may pass from exposed metal parts of an appliance to ground or to other accessible parts of an appliance. Codes and standards state that an alarm must sound and display (it must be audible and visible).562 Dia. Line isolation monitors will be tested and all readings will be taken to make sure that they not only are working but working within the specifications of the code requirements from when they were installed. For isolation systems with a 120 V secondary, the hazard current limit is 600 ?A for the fixed wiring on the secondary of the isolation transformer. Hazard Current Leakage Contributed by Wiring Materials Used Result TW wire, metal conduit. The 5 in.00 127 5. Training: "Administrative authorities should ascertain that electric maintenance personnel are completely familiar with the function and proper operation of ungrounded electric circuits. The magnitude of this leakage current depends on the characteristics of the appliance and its insulation. Digital Clock or Timer The Clock/Elapsed timers are complete microprocessor based units that display either time of day or elapsed time information. The PLC controlled power panel puts control of the circuit in the rooms and can be programmed to allow more then one circuits to be energized at a time.3.00 179 1. Correct the problem as soon as possible; but do not interrupt procedures being conducted when the alarm sounds. The line isolation monitor shall not alarm for a fault hazard current of less than 3. This control may be customized to meet a particular system's requirements. A wire becomes grounded when it is attached to a copper rod driven into the ground or to a convenient piece of conductive plumbing pipe, which ultimately runs into the ground. Straight-blade single, straight-blade duplex, and twist-to-lock receptacles can be provided in a wide array of combinations.00 686 49.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 19 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved II. Catalog Numbers Interior Trim Catalog Number Backbox Transformer Catalog Number Catalog Number Primary kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker Flush Catalog Number Surface Catalog Number 3H5ST22DDI 3 208 208 15A (1) 15A ORT32420 53042BB 53050BB 3XRT22 3H5ST52DDI 480 6A 3XRT52 6H5ST22DDI 6 208 208 20A (1) 15A ORT32420 53043BB 53051BB 6XRT22 6H5ST52DDI 480 10A 6XRT52 9H5ST22DDI 9 208 208 35A (1) 30A ORT32420 53043BB 53051BB 9XRT22 9H5ST52DDI 480 15A 9XRT52 15H5ST22DDI 15 208 208 60A (1) 60A ORT42600 53045BB 53046BB 15XRT22 15H5ST52DDI 480 25A 15XRT52 25H5ST22DDI 25 208 208 90A (1) 60A ORT42600 53045BB 53046BB 25XRT22 25H5ST52DDI 480 40A 25XRT52 Wiring Diagram X0 X3 X1 X2 Line Isolation Montior Terminal Board L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Ground Bus (space for 25, 6-24 AWG, including 1 lug for 1/0) Electrostatic Shield Primary Circuit Protection 1 2 Remote Indicator Alarm 3 Courtesy of Steven Engineering, Inc. Utilizing the latest in line isolation monitoring technology, the LIM2010 provides advanced warning of faults to help reduce downtime and increase operational efficiencies.5 kVA 1 Line Isolation monitor testing and replacement services Inspection and Testing 10. This induces a current in the secondary winding, which is completely insulated from the primary winding by electromagnetic induction. The panel includes: Line Isolation monitor testing and replacement services Isolation transformer, rated to your requirements Line Isolation monitor testing and replacement services Primary circuit breaker Line Isolation monitor testing and replacement services Eight (8) 2-pole circuit breakers, field expandable to 16 Line Isolation monitor testing and replacement services LIM2010 Line Isolation monitor testing and replacement services Line Isolation monitor testing and replacement services Compatible with BENDER's EDS ground fault location system Isolated Power Panels for X-Ray / Laser Equipment Isolated power panels may also be configured to feed x-ray and laser equipment at intervals up to 60 A (within the power rating of the panel). Carefully study the code to determine exactly what special grounding provisions must be provided in each project. System Design A. The THC reading provides advanced warning of isses that are present in the system.562 dia. Many hospitals and consulting engineers are unaware of this document and its requirements.2. A minimum wall thickness of 2/64-in. Isolated Power Systems � Explanation Conventional grounded system with a typical 1000 Ohm person Diagram 2 A current of 120 mA would flow from the line conductor� via the 1000 Ohm person�and return to the neutral via the very low impedance neutral-ground connection. We also offer many employment opportunities worldwide. Figure 1: Monitoring and notification capabilities of an isolated power system Since the line isolation monitor is on an isolated power system, power interruption is not necessary and critical processes may continue to run. 99.00 305 9. Loss of integrity in the ungrounded system does not affect the operation of life support devices. Electrical current comes to the receptacle via two insulated conductors. 2 Line Isolation monitor testing and replacement services Inspection and Testing patient touching the secondary wiring system).50 343 3. NFPA appointed a committee to revise the 1944 standards. System Wiring and Conduit The selection of a proper conductor is one of the most important design criteria of an isolated power system. Locate an additional module behind the surgeon, near the head of the table. Devices with broken or damaged ground wires should be taken out of service and repaired. holes 14 (2 top, 2 bottom for mounting) Shaded areas denote possible conduit entrance 27. They are called dynamic ground detectors, as opposed to static ground detectors, because the measuring circuit continually switches between the two isolated conductors and ground.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 42 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Duplex Isolation Panels Optional Accessories Optional accessories for the duplex hospital isolation panel include: Line Isolation monitor testing and replacement services Surface mount backbox for remodeling applications. Between 10 and 20 mA, the person experiences muscle contractions and finds it more difficult to release his or her hand from an electrode.2. The 20 A ground test can also verify that all metal within the room is properly grounded. Lay out circuit feeders for minimum length, as in the case of operating room 120 V circuits. Imperfect Isolating In the previous examples, we assumed a perfect system. The key to keeping the drill safe is in the ground connection from the drill enclosure to the ground at the receptacle. Only the accessories are optional. Sound ratings of 30 dB or less are guaranteed on units 5.50 38 15 3. The limitation for total system hazard is set at 5 mA.17 157 7. 99 and the NEC Article 517 allow the grounded circuit providing power to an isolated system to enter the non-hazardous area of an anesthetizing location. The Iso-Gard LIM can also be purchased separately and installed as a replacement for any outdated line isolation monitor.5 dielectric strength may not be obtained.2.5 dielectric strength.�c 2 � � 60 � 1. When this happens, a low resistance path would electrically connect one turn of the primary winding with one turn of the secondary winding. 99, which is included as a reference in Article 517. When the two conductors touch each other, a violent arc results, part of the conductor melts, and the fuse opens or the circuit breaker trips. See page 54 for panel-mounted indicator alarms which you can add to this panel. NOTE: Should our person have a reduced ohmic resistance, due to excessive moisture or internal body connections, we could expect potentially lethal current to flow. Standard Type THHN wire is definitely unsuitable. In this deadly scenario, the current can be thought of as proceeding from the hot wire, to the case of the faulty device, to the patient, through the patient, out of the patient at the point where the patient is grounded, then through the grounded wiring (or even earth ground) back to the power source's white wire, which is also connected to ground. 2.00 102 12. The size of the back box will depend on the outlet options for the overall device.3 and 6. This causes a higher than desired leakage and can cause the total resistance to be below what is required by NFPA-99.00 1321 Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services 14 Gauge Stainless Steel Hinged Door with Lock and Key (4) . The MCTS95135 is a stainless steel trim panel with holes and studs for mounting the digital clock. Back boxes for the 120 Series are ordered separately. Back boxes for the 50 Series are customer provided.3. This series is packaged in a durable flush mounting phenolic case. To accomplish this, Schneider Electric provides an electrostatic shield between the primary and secondary windings as standard equipment in all transformers used in hospital isolated systems. Whether an electrostatic shield is necessary in a transformer used in a hospital isolation system has been widely discussed. Each circuit breaker should supply two duplex receptacles, or four outlets per circuit. The completed system is retested to ensure proper operation. The COM460IP connects via Ethernet connections to an existing communication network.9V 1201000 Current passing through our 1000 Ohm person would be: 120V Line Isolation monitor testing and replacement services Inspection and Testing 100 Microamps 1201000 Let's compare the grounded system vs. Typical Surgical Facility Panel Courtesy of Steven Engineering, Inc. The design also helps keep cleaning solutions out of the panel when the walls are scrubbed down by housekeeping staff.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Electrical Maintenance 27 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 5. Several points should be considered: 1. This panel configuration is ideally suited for having a centralized location for receptacles and ground jacks. Normally, this current is shunted around the patient via the ground conductor in the power cord.5 7. The basic control scheme is the mechanical interlock panel. 2. In addition to these features, model IA1C-PTT provides push-to-test functionality. Installation Convenience The Square D brand hospital isolated power system was designed for convenient and economical installation by electrical contractors. NOTE: When ordering the 8CIIAI, modify the x-ray panel interior number by changing the second 'D' to 'N'.00 127 Hinged Door with Lock and Key Power Lock Receptacles 14 Gauge 20A Hospital Use Only (8) Stainless Steel Ground Jacks 30A (6) 5.00 330 4. The Iso-Gard LIM is component recognized by UL under UL1022 Standards for Line Isolation monitor testing and replacement servicess. The LIM monitors all circuitry from the isolation transformer via circuit breakers and power and ground modules and finally to each piece of connected equipment.00 305 4.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Controlled Power Panels 51 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Interposing Contact Controlled Panels1 1 Up to 4 outlets can be controlled from these panels.00 1524 42. This is an important feature in an isolating transformer since it provides for intermittent heavy loads, like those presented by hypothermia equipment. For more than 8 circuits, contact Schneider Electric Medical Products.00 51 2.4 of NFPA99 2012 states "Operating rooms shall be considered to be a wet procedure location, unless a risk assessment conducted by the health care governing body determines otherwise.2 of NFPA99 2012 addresses Line Isolation monitor testing and replacement servicess Section 6. The following figure illustrates these hazards.3. 99 specifies the "Grounding System. This very hazardous condition can cause an electrical hazard to the patient or medical staff.2 No. Components normally included in the surgical facility panel are: Line Isolation monitor testing and replacement services Isolation transformer Line Isolation monitor testing and replacement services Surgical clocks and timers Line Isolation monitor testing and replacement services Line isolation monitor (LIM) Line Isolation monitor testing and replacement services AM/FM, CD stereo system Line Isolation monitor testing and replacement services Audible indicator alarm Line Isolation monitor testing and replacement services Ground jacks Line Isolation monitor testing and replacement services Circuit breaker panel Line Isolation monitor testing and replacement services Double-size film illuminators Line Isolation monitor testing and replacement services Ground bus Line Isolation monitor testing and replacement services Power receptacles Because all of these components are in the same panel, location of this panel within the operating room is critical. Whether snap-in or bolt-on breakers are used, it is extremely important that the dead front for the panel be properly installed. The threshold of perception for an average adult is 1 milliampere (mA). This 120 mA could prove extremely dangerous for our 1000 Ohm person. The displays can also be remotely controlled by the MCTCT remote control panel.1.0 10. Isolated Power provides an extra layer of protection for the patient in contact with saline-soaked sponges, anesthetic fittings and the exposed end of electrodes or catheters grounded either intentionally or by accident.00 330 12. On the other hand, a leakage current of 10 to 180 ?A can injure the patient. This is the only way to avoid purchasing unnecessary equipment. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs. Continuity of Power 3. The LIM2010 has an automatic self-calibration and self-check feature. 4. Power and ground cords can be dangerous to circulating personnel; so, whenever possible, locate receptacles so cords do not lie within the major traffic area. RA1PM (Panel Mount) ORICA ORICA5C Courtesy of Steven Engineering, Inc." This subject is also discussed in detail in "grounding" on page 16 of this handbook. Once the predetermined number is achieved, the rest of the circuits are locked out. However, the other wire, supposed to be "black" in color and known as the "Hot" wire -- different story. They are both "floating".00 1524 30. If the drill is in good repair and the enclosure is properly grounded through the power plug, the procedure is safe. Isolation Transformer The heart of the system is the Square D brand isolation transformer. Most hospital operating rooms have a set traffic pattern and positioning for the operating room table." Section 6. 4.2.50 38 33.00 1067 20. Models with additional features include: MK2000P: Test button MK2000C: Amber "OVERLOAD" Isolated Power System Inspection and Testing alarm LED MK2000CP: Amber "OVERLOAD" Isolated Power System Inspection and Testing alarm LED and test button MK2000CBM: Amber "OVERLOAD" Isolated Power System Inspection and Testing alarm LED, test button, and digital displays showing THC reading and Line Isolation monitor testing and replacement services Inspection and Testing isolation transformer load Isolated Power System Inspection and Testing in real-time Advanced MK Series Remote Indicators The universal remote alarm indicators and operator panels MK2430/MK800 are intended for visual and audible indication of operating status and alarm messages from BENDER systems including the LIM2010 and EDS series ground fault location evaluators. However, each team member contributes vital information to the system design.43 392 3. The components are factory engineered, wired, and thoroughly tested to provide the ultimate in protection, reliability, and ease of installation. That is that they are grounded. There are several ways to isolate power, but the most common and economical is to use an isolating transformer. The above testing procedures are based on those required for isolated power systems in NFPA-99. Isolated Power System Before using an isolated power system, conduct certain tests required in NFPA-99 to verify proper installation of the equipment and wiring.00 1067 (4) .0 305 (4) . Poor communication causes poor planning, which will be very costly and time-consuming if the system must be modified after it is installed.50 114 3. Additionally, the code states that the unloaded system, with the LIM disconnected, must have a minimum line-to-ground impedance of 200,000 ?. The transformer will thus be designed to operate at a relatively cool normal temperature, but will still be able to handle future demands which exceed today's norm. 4890BR9201 for more complete information and specifications. In more technical terms, no hazardous potential to ground exists from either conductor of an isolated electrical system. It is safer to install a sufficient number of accessible receptacles than to use extension cords.00 152 6. 99. GROUNDED SYSTEM A grounded power system for the wall outlets in an operating room is just like what you probably have in your home's living room or TV room.00 406 Primary Breaker 1.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Power/Ground Modules 59 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Ground Modules Isolated Power System Inspection and Testing 120 and 50 Series Ideal for room ground bus extensions to make ground connections in large operating rooms convenient. Switching between the isolated conductors and ground causes interference on the isolated system. Home / Simulation Portfolio Last Updated 12/11/13 Electrical Power and Safety in the Operating Room To reference this educational web simulation according to the APA style for Web references, use: Gibby GL, Lizdas DE, Lampotang S.5 + 7. These faults could develop through internal aborted components or poor power cord insulation. We will also provide written confirmation that the testing logbooks have been delivered to the hospital maintenance staff and that they are up to date. IA1C and IA1C-PTT The IA1C is the first in the series of low voltage remote alarm indicators.4. Section 6.50 (4) . The Isolated Power System does not have this low impedance connection.21 � 10-9 Farads p Isolated Power Systems � Explanation 1000 Ohm person in contact with one line conductor and ground Diagram 6 We can now calculate the voltage that will be present across our 1000 Ohm person. 13. The LIM2010 has an automatic self-calibration and self-check feature.00 1575 Shaded area denotes conduit entrance 34. The proper accessories are often available at no extra cost, if they are specified when the order is placed.0 mA. This situation may be represented by the equivalent circuit shown in Diagram 6. The 6 in. However, since the position of the head of the operating room table can be varied, the hospital personnel should advise the electrical engineer of the table's standard position. Authorities determined the major causes of these accidents fell into two categories: Line Isolation monitor testing and replacement services Man-made electricity Line Isolation monitor testing and replacement services Static electricity (75Line Isolation monitor testing and replacement services Inspection and Testing of recorded incidents) In 1939, experts began studying these conditions in an attempt to produce a safety standard." The early standards were not generally adopted in new hospital construction until 1947. Isolated Power Systems � Explanation We may now examine our circuit parameters more closely by using Ohm's Law and Diagram 5 Diagram 5 Reduced schematic of an Isolated Power System The impedance value of C1 and C2 is 1. This causes the primary circuit breaker to open, removing the unit from service. However, in many grounded system operating rooms, GFCI protection is not utilized, primarily because in the event of a leakage current --whether a person is being harmed or not -- the power will be shut OFF and that carries a risk as well. Line Isolation monitor testing and replacement servicess from PG LIFELINK continuously monitor the Isolated Power System in the operating room and detects any faults immediately. The fault impedance should be inserted directly into the LIM with all secondary wiring disconnected. A remote indicator duplicates audible and visual alarm indications on the LIM. Section 6.50 419 13.00 686 12.PDF file you can download here. This M5IAI and M5IAI50 remote indicator alarms contain a milliammeter like the one found in the panel, as well as a complete test switch facility.5 mA Monitor Hazard Current Courtesy of Steven Engineering, Inc.00 1067 3 kVA, 3-Phase Flush Panel 3 kVA, 3-Phase Surface Panel (4) .) NOTE: This is not recommended on a grounded system! Schematic representation of an Isolated Power System B.3 of NFPA99 2012 addresses Performance Criteria and Testing for Isolated Power Systems. NFPA No. We have made these calculations first order, and as simple as possible so that only a basic knowledge of Ohm's Law is sufficient to understand the system concepts. First we calculate the total leakage current from L1 to L2 .0 686 7. The LIM2010 may be configured for additional alarms, including transformer overload and overtemperature, overvoltage and undervoltage, and more.89 above. Ground Cord Assemblies Schneider Electric offers various types of ground cord assemblies. The full load design temperature, however, is limited to an 80 �C maximum rise. This large panel condenses many of the electrical accessories normally found in an operating room into one unit.0 5.0V and 5mA theoretical maximum values with a LIM reading of 5mA) Clearly, the Isolated Power System offers considerably greater protection to the operator and patient.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Remote Alarm Indicators 55 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Wall-Mounted Indicators When the flow to ground is within the predetermined limits for the circuits being monitored, a constant green light remains illuminated.00 432 12. Even though not required by code, hospitals should consider revising these systems to match current standards. 99. 3.5, or 10 kVA. Line Isolation monitor testing and replacement servicess Confirms the Integrity of an Isolated Power System for the Healthcare Market ELECTRICAL SAFETY IN HOSPITALS ORs, ICUs and other critical care areas qualify as electrically hazardous environments.0 10. Procedures for electrical safety should include the following: Line Isolation monitor testing and replacement services Check all wall power receptacles and their polarities regularly. RA1PM The RA1 is the newest addition to the remote alarm indicators series.00 508 42. If one of its terminals touches the white conductor in the receptacle, nothing happens. low profile panel is available from 3 to 10 kVA and includes a NQOD type interior, accepting snap-in or bolt-on breakers. We also provide applications assistance and in-service education to your clinical and biomedical engineering staff.5 7. Schneider Electric has a variety of control schemes from push button to switches located in the operating room. All devices should obtain their electrical current through their connection to the black and white wires -- they should not return ANY current via their grounding connection (usually a green wire). Check the associated alarms and silence functions. Primary application is where the equipment ground bus in the emergency distribution panel is not conveniently located or cannot accept the large number of connections, which may be required for the area. A permanent sign must be displayed at the entrance to all flammable locations. The third opening is shaped to receive a pin (U slot) rather than a blade-shaped prong. The THC (Total Hazard Current) signal is processed and routed by dual-channel circuitry to the display unit and output alarm relay.50 114 4. Line Isolation monitor testing and replacement services Only trained personnel should perform these procedures. Confirmation that the impedance to ground of both conductors of the isolated system exceeds 200,000 ohms when installed.00 813 30. Though not an NFPA code requirement, the shield is highly recommended by leading engineers. Furthermore, no sparking occurs when either conductor touches the plumbing; the fuse or circuit breaker maintains the connection.00 203 5. 99 defines the items in an anesthetizing location, which must be powered from the isolated ungrounded system.00 203 8. Consequently, a system to fit the special needs of each hospital is practical.6. Since the resistance through the human body is much higher than the resistance through a properly connected ground wire, most of the current follows the path of least resistance (the ground wire); the person holding the drill is safe. This is usually restricted to the location of the overhead operating room light. The grounding system permits intermingling of electric appliances located near or applied to the patient without the hazard of leakage or fault current to the patient.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Three-Phase Isolation Panels 47 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Dimensions (cont. Control Panel (MCTCT) Designed to operate with the MCT12B digital clock (see above). ICU and CCU areas where the patient may be connected to several pieces of equipment �all which contain their respective leakages, both resistive and capacitive, greatly add to the possibility of hazardous leakage currents flowing. It comes complete with SILENCE, HAZARD, and SAFE indicators, a PUSH-TO-TEST button, and an LED light bar for metering. The Square D brand remote alarms for the Iso-Gard LIM operate at 12 Vac and do not add any additional hazard current to the isolated power system being monitored.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 14 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolated Systems Line Isolation monitor testing and replacement services (LIM) Codes and standards not only specify the limits within which an isolated ungrounded system must operate, but also the method for checking system integrity. Determine the line-to-ground impedance between each of the power conductors and ground. By applying the proper kVA loading, a panel can now provide power to multiple rooms and maintain safe operating conditions. Courtesy of Steven Engineering, Inc. However, grounded power systems are a potential killer should a grounded person come into contact with a line conductor. XR29420 53015BB 53019BB 15XR22 15H5S23PLCIR 208 240 90A 15XR23 15H5S32PLCIR 240 208 90A 15XR32 15H5S33PLCIR 240 240 90A 15XR33 15H5S42PLCIR 277 208 90A 15XR42 15H5S43PLCIR 277 240 90A 15XR43 15H5S52PLCIR 480 208 40A 15XR52 15H5S53PLCIR 480 240 40A 15XR53 25H5S22PLCIR 25 208 208 125A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof.00 610 8. 99.00 254 11. Power Ground Module Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG Surgeon Support Team Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 18 AWG Traffic Area To Panel Patient Power Ground Module To Panel To Panel To Controlled Power Panel Control Wiring Power Runs Ground Runs Anesthetist To Surgical Light Portable Equipment Isolated Power Panel Receptacle Module Isolated Power System Inspection and Testing Conductor size to be determined by the portable equipment manufacturer. Line Isolation monitor testing and replacement services Additional QO220 circuit breakers to increase panel from 8 to 16 branch circuits. It can, however, be used for the ground conductor. Section 6.1 states "The Health Care Facilities shall provide programs of continuing education for its personnel. by 8 in. In this example we will examine why our 1000 Ohm person is greatly protected from potentially lethal shock hazards.985 mA Allowed for System Hazard Current Alarm Band Width 0. Energize the isolation panel by closing the primary circuit breaker.5 Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Backbox to be used with MCT95135 53007BB Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing 8 12 4 Remote control unit (optional) MCTCT 4.0 686 7. Avoid the use of wire pulling compound since it increases the capacitive coupling.50 89 15. All of our service visits are documented in Hi-definition digital video, and provided to our clients online via this company extranet. By utilizing the EDS series devices, the source of the fault in the isolated power system can be identified within seconds. Ground Detector.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Codes and Standards 9 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Both types of anesthetizing locations must be further classified as "wet" or "not wet" areas.00 305 Silence Hazard Safe Remote Indicator Dual Dimensions: Inches mm 8CIIAI Dimensions 12 Gauge Stainless Front Cover Remote Indicator 10.0 127 29.00 762 6. The leakage current could result in potential differences between pieces of equipment and could flow through vital organs of the patient, if a patient current path is established. This can be done by connecting two to four receptacles to one circuit breaker. RETROFIT packages are available for a fraction of the cost of a new installation! Isolated Power Systems were first introduced into the hospital environment as a means of reducing the risk of explosions in operating rooms and any other area where flammable anesthetizing agents are used. On the other hand, Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG only represents 0. We can provide your installation, repair, calibration, preventative maintenance and electrical safety inspection services in support of your standard or extended warranty. In three-phase systems, the third conductor shall be color-coded yellow. This panel arrangement consists of three groups of timer controls and one group of push buttons to set the time for the 12/24 hour clock.3. If the residence was built within the last 30 years, the receptacle most likely has three openings, not two. This is the only way to ensure the system is properly installed. It is important to remember that an increased number of circuits will also increase the total hazard current. The alarms should operate in the safe condition and in the alarm condition.3.1V (with 50 microamp leakage) I.0 127 14 Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Control Transformer L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Brkr Sec. Hospitals may choose to employ their own medical engineering personnel, share this personnel with other hospitals, or contract with an outside vendor to service medical equipment. All remote indicators include a green "SAFE" LED, a red "HAZARD" LED, and a "MUTE" button with an integral amber LED. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40. This also allows someone to change circuits at will. RETROFIT packages are available for a fraction of the cost of a new installation! Line Isolation monitor testing and replacement servicess Isolated Power provides protection for both the patient and staff against electrical shock. When installing a new curtain rod at the window over the kitchen sink, one would probably use a small electric drill.00 305 9. The cord is an extra flexible Line Isolation monitor testing and replacement services Inspection and Testing 10 copper conductor with a green neoprene jacket. It could be from 1 V to approximately 240 V in a 120�120 V transformer. Please contact your Schneider Electric representative for details. The shield attenuates common-made noise or disturbances that are frequently generated by equipment used in other locations such as Diathermy and X-ray equipment. Conductive flooring is still required by code in all flammable and mixed facilities. The traffic pattern, along with the positioning of the surgeon and support team, should also be verified. Press the push-to-test button on the LIM to ensure its test capability.3.0 208 208 240 240 277 277 480 480 208/120 240/120 208/120 240/120 208/120 240/120 208/120 240/120 DVT522 DVT523 DVT532 DVT533 DVT542 DVT543 DVT552 DVT553 7. 3. HGC Series-Hospital Grade Ground Cords and Jacks BENDER hospital grade ground cords are available in various lengths for implementing an equal-potential environment. 3 Panels available with red hospital-grade duplex receptacles. Conductive flooring is not required for rooms that are designed as nonflammable anesthetizing areas. Multiple LIM2010 devices may also be controlled by a single, intellgent remote station. Only the definition of "wet location" is present to recommend that IPS is the better solution� and then only as far as continuity of supply is concerned. The variety of Square D brand modular system components gives the electrical consulting engineer and architect great design latitude. Schneider Electric supplies a variety of interlocking type panels and schemes; do not hesitate to ask us for the special system your hospital requires.00 356 24.5 7. NOTE: Keep in mind that this meter merely predicts the possibility of the condition; it does not indicate that current is actually flowing. X Line Isolation monitor testing and replacement services Inspection and Testing Hubbell Line Isolation monitor testing and replacement services Inspection and Testing IN16494 (equivalent to Hubbell Line Isolation monitor testing and replacement services Inspection and Testing 25603) A Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-15R B Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-20R C Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-30R D Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-50R E Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-15R F Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-20R G Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-30R 0 Line Isolation monitor testing and replacement services Inspection and Testing No 208 V or 240 V receptacle (8) Configuration of 208 or 240 V receptacle Line Isolation monitor testing and replacement services Inspection and Testing 2 The circuit breaker matching the selected receptacle is installed at the factory in the 208 V or 240 V section of panel's interior. Article 517, National Electrical Code Isolated Power System Inspection and Testing NFPA No. IGD Iso-Gard� Line Isolation monitor testing and replacement services (LIM). The Iso-Gard LIM, with its microprocessor-based technology, is impervious to all types of electrical noise interference found in hospital operating rooms. The LIM2010 line isolation monitor (LIM) measures the total hazard current (THC) in an isolated power system. X Line Isolation monitor testing and replacement services Inspection and Testing Hubbell Line Isolation monitor testing and replacement services Inspection and Testing IN16494 (equivalent to Hubbell Line Isolation monitor testing and replacement services Inspection and Testing 25603) A Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-15R B Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-20R C Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-30R D Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-50R E Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-15R F Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-20R G Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-30R 0 Line Isolation monitor testing and replacement services Inspection and Testing No 208 V or 240 V receptacle Courtesy of Steven Engineering, Inc.00 1422 57. The standard transformer uses a 220 �C rated insulation system. Continuity Of Supply Probably the strongest argument for the application of isolated power is where continuity of supply is paramount.0 10. This location must be designed to comply with NEC Article 501. This limits the amount of equipment that can be connected to an isolated system, often requiring two systems in an operating room, rather than one.2 � 106 � 1000 Line Isolation monitor testing and replacement services Inspection and Testing 999 Ohms 1201000 We may round this number to 1000 Ohms, showing that the impedance of our person has in fact completely shunted the C1 capacitance. Courtesy of Steven Engineering, Inc. Technical personnel may be notified immediately of an alarm condition with remote communication capabilities.25 83 4. Line Isolation monitor testing and replacement services Totally enclosed, non-ventilated, flush enclosure with stainless steel trim. To perform this test, attach probes between metal surfaces and the room ground bus; verify the ground connection. The unit can also drive external analog meters as found in many remote alarm units such as the Square D brand remote alarm with ammeter. However, the displays are not visible during this time interval. Following a rigid maintenance program can reduce electrical hazards significantly. It also gives the support team easy access to the controls. To conduct this test, place a 0�1 milliammeter between either line to ground and measure the current. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment. Courtesy of Steven Engineering, Inc. Since the patient provides a grounding path via the attendant and pacemaker, a current divider will result.8.00 102 MCT4RC Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. Some OR teams prefer to place the control panel within reach of the anesthetist. Description Catalog Number Dimensions (in. Shaded areas denote possible conduit entrance 30. Courtesy of Steven Engineering, Inc.5 kVA and 10 kVA ICU/CCU Panels Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. III. Surgical Facility Panels (SFP) The surgical facility panel offers another method of providing isolated power in an operating room. Line Isolation monitor testing and replacement services The hospital should appraise several options for its equipment control, rather than choose the easiest or most available program. ORICAC and ORICA5C Both of these models are furnished with green, yellow, and red indicator lights, plus a milliammeter. The cross-sectional area is usually expressed in units of AWG (American Wire Gauge). This also gives the control of the receptacle to the room. The same failure occurring in a shielded transformer, as shown in the shielded transformer illustration on the preceding page, causes a high current flow in the primary. Since they are digital, they instantly reset, which eliminates annoying time delays for mechanical resets. The ground in this case is the kitchen plumbing fixture." For liability and operation, has your hospital personnel, that are now maintaining your Isolated Power Systems, been trained by a proper instructor? Many hospitals had training when the equipment was first installed but after many years those individuals are no longer with the hospital.3. Each remote indicator is powered directly by the LIM2010 line isolation monitor, located at the isolated power panel. Line Isolation monitor testing and replacement servicess from PG LIFELINK continuously monitor the Isolated Power System in the operating room and detects any faults immediately. NOTE: Hospital operating rooms have been classified as Critical Care Areas since the 1993 issue of the NEC. These are great devices and are highly recommended. The technician provides orientation to the system, and its maintenance and testing. Test the LIM to ensure the proper alarm trip point. Occasionally, difficulty occurs in circuits feeding portable equipment since these conductors are somewhat larger.35 85 3. These units must be replaced immediately, as it is a violation of code to use them. The architect can also specify the proper equipment, avoiding later difficulties. It does not generate any interference that could affect patient monitoring devices. The conclusion to be drawn is the isolating transformer provides the same usable electrical energy as the grounded power circuit. Even in the most sophisticated operating rooms, the equipment load rarely exceeds 5 kVA. An increase to 100 mA will cause ventricular fibrillation. Section 6.1. The LIM is equipped with a meter (also required by code) that gives continuous indication of the system's condition. Types of LIMs Several types of line isolation monitors are available.5 150 125 100 60 DVP2A1k DVP3A1k DVP4A1k DVP5A1k DVT122/DVT123 DVT132/DVT133 DVT142/DVT143 DVT152/DVT153 208 240 277 480 25 150 125 110 60 Courtesy of Steven Engineering, Inc. NOTE: On a correctly installed system there will be a very small leakage resistance in parallel with the system net capacitance, but this value, being so low, may be neglected for the purpose of this example.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 28 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Maintenance Adapters and Extension Cords The use of extension cords in patient areas and anesthetizing locations often presents an electrical hazard. Person Line Isolation monitor testing and replacement services Inspection and Testing Voltage across our 1000 Ohm person I. In addition, we provide video documentation of all service visits. The conclusion is current does not flow from either conductor of the isolated system to ground. Every foot of wire contributes leakage, so we must keep the total footage to a minimum. At this time, take LIM readings with all circuit breakers closed and with all circuit breakers open. This impedance must be greater than 200 kilohm (k?) for either line to ground. The method to be used is a matter of personal choice. H x 8 in. It powers the "memory mode," which prevents loss of time information on the digital clocks during a power interruption. Electrostatic Shield Main Circuit Breaker Customer Load Connections Pri. The value of current divided into the system voltage determines the system impedance.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 32 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Operating Room Panels Operating Room Panels First introduced in the 1960s, this standard unit is most often used to supply 120 V service to the receptacles in an operating room. The hazardous levels of current for many patients are amazingly smaller.00 254 7. Each hospital should maintain the necessary testing equipment to conduct these testing procedures. Current codes and standards require that all conductive surfaces within the patient vicinity must be properly grounded. COMBINATIONS GROUNDED SYSTEM & BROKEN GROUND The ground wire to appliances is very important as it is one of the primary defense systems to prevent electrical shock. OR 27520V3 7SLP116 7SLP216 7SLP316 7SLP416 7SLP516 10H5S11DDIL 10H5S21DDIL 10H5S31DDIL 10H5S41DDIL 10H5S51DDIL 10 120 208 240 277 480 100A 60A 60A 45A 30A 10SLP116 10SLP216 10SLP316 10SLP416 10SLP516 54.43 392 3. In the same year, the NEC incorporated the NFPA standards into the code. The National Electrical Code (NEC) of 1959 firmly established the need for ungrounded isolated distribution systems in areas where combustible gases are used. The unit has an extra set of normally opened and closed dry contacts for use with other external alarm systems. Remote Indication RAS Remote Annunciator Station RAS series remote annunciator stations utilize multiple MK series remote indicators, each connected to a line isolation monitor. The unit is completely factory wired; only field power connections and ground connections are necessary. Devices with broken or damaged ground wires should be taken out of service and repaired. 2 For bolt-on, secondary circuit breakers, add a "B" to the end of the catalog number. BiomedRx has isolated power system and line isolation monitor testing and service centers in Alabama, Alaska, Arizona, Arkansas, California (Los Angeles, San Diego, San Francisco), Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachussetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming and Puerto Rico. BiomedRx can train your current maintenance staff on any manufacturer's isolated power systems. The result is a dangerously high secondary voltage (primary + secondary) because of auto-transformer action.89 of NFPA99 2012 defines an Isolated Power System as "A system comprising an isolation transformer or its equivalent, a line isolation monitor, and its ungrounded circuit conductors. For example, a patient who has impaired nerve sensitivity cannot detect heat.00 178 15. Routine housekeeping procedures and incidental spillage of liquids do not define a wet location.2. With this selection of capabilities, the Iso-Gard LIM can meet the requirement of any application. For more than 4 circuits, contact Schneider Electric Medical Products. These cords may lie in traffic areas where people step on them and roll equipment over them. This slim design is of particular benefit when the isolation panel is mounted in an operating room where wall space is limited. The size of the isolation transformer should be limited to 10 kVA or less.5 or less, as recommended by the NEC and NFPA No. Change letter "C" to letter "D", e.00 305 12. With the broken ground, no alarm goes off, and now the case of the device is connected to the power system voltage.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels. The boxes are designed for flush mounting, but are available for surface mounting on request.25 83 4. Follow the test procedures listed below: LIM Test 1. This unit can connect to that point by a single conductor. It is a common procedure to use a single isolated system to supply these circuits for more than one operating room.50 165 6. 99, anesthetizing locations are classified as: Line Isolation monitor testing and replacement services Hazardous locations which use flammable anesthetics. The LIM must respond audibly and visibly when the impedance of the system degrades to the extent that 5 mA of current will flow through either conductor of the system to ground in a zero impedance fault. Many hospitals feel it necessary to monitor each operating room at a central location. Courtesy of Steven Engineering, Inc. BiomedRx testing of isolated power systems exceeds the requirements of NFPA 99 6. These patients may require special protection even though their normal body resistance has not been intentionally bypassed. However, if that ground wire is broken, the case will become "hot" and the circuit breaker will not blow. The size of the back box will depend on the outlet options for the overall device. Section 3. It mounts in a 53008BB backbox (ordered separately). Diagram 7 Reduced schematic of Isolated Power System with 1000 Ohm person in contact with line conductor Leakage current is now: 120V Line Isolation monitor testing and replacement services Inspection and Testing 100 microamps 1201000 Our 1000 Ohm person coming into contact with L1 has approximately doubled the leakage current to 100 microamps, which is still an extremely low level. The proper response of the line isolation monitor and its associated alarm device(s) is observed. Flush Catalog Number Surface Catalog Number 15H5S22DDCI 15 208 208 90A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof. Little traffic occurs between the support team and the anesthetist. The following simple analogy should help the layman understand isolated systems.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolated Systems 11 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved In this example, consider an electrical receptacle in the counter area of a household kitchen. Advance warning system of what their equipment condition is. Person 120V 0. Line Isolation monitor testing and replacement services, testing device that continually measures the balanced and unbalanced impedance from line-to-ground on each line of an ungrounded electrical system. This inability to sound an alarm (to recognized balanced fault systems) is the main reason codes and standards no longer allow its use. This ground plane is established by the use of a properly connected ground system. This would be contingent on interpretation of the mopping of the floor which occurs between cases as "drenching", as defined in Section 3.7 mA 2. The principles are no different outside the operating room. This LIM represents the most recent generation of line isolation monitors. Line Isolation monitor testing and replacement services Primary main circuit breaker sized in accordance with Article 450-3(b)(1) of the National Electrical Code (NEC). Manufacturers BiomedRx provides an outsourced solution for medical equipment manufacturers seeking to expand their sales and service territories. This insulation system allows, by NEMA�ANSI standards, a temperature rise of 150 �C above a 40 �C ambient. QO210 through QO260. In any case, the result would be the same. The Line Isolation monitor testing and replacement services (LIM) continuously monitors the Isolated Power System and immediately detects line-to-ground faults.50 165 . The door covers the branch circuit breakers and line isolation monitors to help restrict unauthorized access.5 7. This "short circuit" would disengage the circuit breaker or blow the fuse as it did when the live conductor touched the plumbing. XR29420 53015BB 53019BB 15XR22 15H5S23DDIC 208 240 90A 15XR23 15H5S32DDIC 240 208 90A 15XR32 15H5S33DDIC 240 240 90A 15XR33 15H5S42DDIC 277 208 90A 15XR42 15H5S43DDIC 277 240 90A 15XR43 15H5S52DDIC 480 208 40A 15XR52 15H5S53DDIC 480 240 40A 15XR53 25H5S22DDIC 25 208 208 125A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Three-Phase Isolation Panels 45 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Catalog Numbers To order three-phase hospital isolation panels, specify the correct catalog number for the following items: Line Isolation monitor testing and replacement services Interior Line Isolation monitor testing and replacement services Trim Line Isolation monitor testing and replacement services Backbox Line Isolation monitor testing and replacement services Transformer NOTE: The interior, trim, backbox, transformer, and optional panel mounted accessories for the LIM must each be ordered separately. The allowable protection is as follows: Line Isolation monitor testing and replacement services Ground-fault circuit interrupter if first-fault conditions are to be allowed to interrupt power Line Isolation monitor testing and replacement services Isolated power system if first-fault conditions are not to be allowed to interrupt power The governing body of the hospital will make the determination of a "wet location," using the following definition: A patient care area that is normally subject to wet conditions while patients are present. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker 2 2 Any secondary circuit breaker can be used. Line Isolation monitor testing and replacement servicess Isolated Power provides protection for both the patient and staff against electrical shock. ISOLATED SYSTEM & BROKEN GROUND The ground wire to appliances is very important as it is one of the primary defense systems to prevent electrical shock. Periodic testing and logging for future test required by NFPA 99 will be explained to maintenance staff. It is the document used by most inspectors. BiomedRx can perform the annual testing and re-certification of your system if it passes, and we can provide replacement or retrofitting of your system to bring it into compliance if it doesn't. They are furnished with Type Line Isolation monitor testing and replacement services Inspection and Testing 304 brushed stainless trim. THE LINE ISOLATION MONITOR The line isolation monitor is a device which continually monitors the impedance (resistance and capacitance) from all lines (single and three phase) to ground and indicates what current could flow to a patient of body resistance 1000 Ohms, should the patient come into contact with a line conductor (i. Anesthetizing Location Classifications The first type of location is one which is flammable because explosive anesthesia is used. The available grounded electrical power energizes a coil in the isolating transformer; this coil is called the primary winding. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker Flush Catalog Number Surface Catalog Number 15H5S22PLCIR 15 208 208 90A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof. This demonstrates the energy used when any household appliance is run. The ZT1591 has a large 2-1/2" 7 segment display with large bright red LED characters that are easily read in high ambient light. Before a designer can choose the proper electrical distribution system for a hospital, the governing body of the hospital must inform the designer about the location's use. Leave the secondary circuit breakers in the off position.5 7. Because the panels provide power to life support equipment, a lockable door is included on all units.0 178 14 Typically 5. Both balanced - as many occur from using equipment with balanced RF filters - and unbalanced resistive and impedance faults are detected by the LIM. This grounding conductor also provides a path for leakage current which could be conducted to an electrical appliance case. Conduct this test at any of the receptacles; be sure all the secondary breakers are in the "on" position. This reduces any confusion caused by an alarm going off in the operating room from circuits that don't need to be energized. Line Isolation monitor testing and replacement services Use electrically insulated tools. Be sure to determine the load of secondary equipment being used; very few cases will require a 7.6.0 mA. The COM460IP has many customizable options, including the ability to act as a Modbus/TCP gateway for status information.3. In your home, additional protection is therefore provided in portions of your home where occupants are likely to be near water -- the kitchen, bathrooms, basements and the like. Installation of circuit breakers rated higher than 60A avoids UL Listing. This amount of current will produce a slight tingling feeling through the fingertips. This device was designed with the user in mind.50 89 8. 7. These modules use standard electrical gang boxes, therefore back boxes are not included. Upgrade to a digital MARK V LIM.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 18 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide Equipotential Grounding The NEC (1971, 1975, and 1978 editions) specified and dictated the use of an equipotential grounding system with maximum resistance for each branch of such a system. 2 Transformer included for 3 kVA and 5 kVA when interior is ordered. This emphasizes the need to place the isolation panel as close as possible to the point of usage. The typical configuration is provided with one side configured for 208 V or 240 V fixed at 15 kVA and the second side configured for 120 V at 5, 7. Courtesy of Steven Engineering, Inc. Only a LIM connected to the secondary would indicate the problem.0 127 29. Because the resistance of a grounding conductor is extremely important, you must give it careful consideration.3.00 533 7.50 38 52. Proper grounding dissipates static charges and shunts fault currents and normal leakage currents away from attendants. In this way, it overcomes the greatest inadequacy of static ground detectors Isolated Power System Inspection and Testing the inability to recognize and sound an alarm at the occurrence of an excessive balanced fault condition. However, if the ground wire is broken, most of the current would flow through the patient.00 283 4. Figure 2: The LIM2010 line isolation monitor in the alarm condition The LIM2010 clearly displays the total hazard current on the face of the panel, as well as providing an audible alarm. (Leakage current may at this time be measured by connecting a mA or microamp meter from either L1 , or L2 to ground.00 1626 62. Verify the LIM is operating.4.00 102 Safe/Silence Hazard Stainless Steel Trim IA8CI Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Grounding Grounding in a patient care or anesthetizing location is an important safeguard against shock and electrocution. MCTCT Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The BENDER ZT1591 operates independent of line frequency. Supervisory Module For Mechanical Interlock Panel (8CIIAI) This unit is a remote push button station for control of power to a portable X-ray receptacle. Line Isolation monitor testing and replacement services Surface mount backbox. If the other terminal of the light bulb touches the kitchen plumbing, nothing happens.562 Dia. This bulletin is not intended as a "do it yourself" manual for installation of hospital isolated systems. UL 1022 Line isolation monitors are measured against this UL Standard. Remote indicator alarm stations must be located at the receptacle location. In the following example, we will use the configuration shown on page 22. Inexpensive to build and reliable because of its simplicity, the ground detector is unaffected by and does not create any radio frequency (RF) interference.25 57 2. Increased use of such equipment as heart monitors, dye injectors, and cardiac catheters increases the threat of electrocution when used within the circulatory system." In an isolated power circuit, a ground fault would result in an alarm, but power would not be interrupted. Modules are provided on either stainless steel wall plates (compatible with standard contractor supplied electrical gang boxes as shown on the right) or stainless steel cover plates for use with ROHS compliant galvanized steel backboxes. Advance warning of equipment failure Please note the copy of NFPA News Brief referring to electrical shocks in operating rooms which have installed grounded power. Mtg. Repeating the experiments with the light bulb, we find current will not flow if a single terminal of the light touches either secondary conductor of the isolating transformer. The code demands that the Line Isolation monitor testing and replacement services Inspection and Testing 1 conductor in the system be color-coded orange, the Line Isolation monitor testing and replacement services Inspection and Testing 2 conductor color-coded brown, and the ground conductor color-coded green. However, when the other terminal of the light bulb touches the kitchen plumbing, the bulb illuminates as it did when it touched both wires. If it does exceed 2 V, inspect the ground for proper connection and properly sized wire." Although these isolated systems are very important to hospital operations, many hospital staff lack even a basic understanding of how isolating systems work. YES NO NO NEC Article 517-3 Determine Type of Patient Care Area General Care Critical Care YES Grounded Power no extra protection required NEC Article 517-20 Can tolerate power outage during ground fault? Grounded Power with GFCI Isolated Power System Wet Location Courtesy of Steven Engineering, Inc. This assures the hospital and consulting engineer that the equipment meets all existing codes and standards.5 kVA Output Voltage is 120 V and 240 V Primary Voltage Line Isolation monitor testing and replacement services Inspection and Testing 208 V Interior Catalog Number Selections Selection Number Options (1) Primary voltage of dual output voltage isolation panel 2 Line Isolation monitor testing and replacement services Inspection and Testing 208 V 3 Line Isolation monitor testing and replacement services Inspection and Testing 240 V 4 Line Isolation monitor testing and replacement services Inspection and Testing 277 V 5 Line Isolation monitor testing and replacement services Inspection and Testing 480 V (2) Output voltages A Line Isolation monitor testing and replacement services Inspection and Testing 120/208 V B Line Isolation monitor testing and replacement services Inspection and Testing 120/240 V (3) Size rating of 120 V secondary winding (kVA) Eight 20/2 branch circuit breakers are installed at the factory in the 120 V section of panel's interior.00 737 27.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 52 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Controlled Power Panels Contactor Controlled Panels1 1 Up to 8 outlets can be controlled from these panels. Any hospital considering design changes to electrical systems in critical care patient areas should obtain the services of an electrical consulting engineer.00 508 8.50 343 HOLD 2 BATTERY TEST HOURS MINS COUNT 2 HOLD 3 COUNT 3 HOLD 4 COUNT 4 4.00 305 5. Insist that any line isolation monitor installed in the facility have a UL component recognition under this standard. A receptacle module without a remote alarm indicator is also available. Equipment used in the OR is NOT normally grounded, but the equipment casing is � this configuration protects this patient, as the secondary wiring system, which is not grounded, requires two faults in order to shock the patient (fault no. For the QOB� (bolt-on) circuit breaker, Schneider Electric recommends checking the tightness of the bolted bus connection at least once each year. (2013): Electrical Power and Safety in the Operating Room. Including a meter that displays hazard current in the amount of current that would flow through a low impedance ground fault on the ungrounded electrical system; hazard current is predicted fault current.5 38 27. The Timer may be activated from the remote control MK1550 or an external contact (code blue or other monitoring output).5 Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Rechargeable battery pack (optional) MCTBP Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Surgical Chronometer Clock and three timers MCT14B 16. Do not accept any hospital isolation equipment unless it is listed and labeled as a complete system under this standard. The cost of a single ground jack, or even several ground jacks, in a room is quite low. The MCT4RC remote control panel can be mounted in a location selected for accessibility. NFPA-99 requires yearly testing of Isolated Power Panels. Conductors for the isolated ungrounded system must be color-coded: Line Isolation monitor testing and replacement services Orange for conductor Line Isolation monitor testing and replacement services Inspection and Testing 1 Line Isolation monitor testing and replacement services Brown for conductor Line Isolation monitor testing and replacement services Inspection and Testing 2 Line Isolation monitor testing and replacement services Green for the grounding conductor Line Isolation monitor testing and replacement services Where three-phase isolated systems are used, yellow for conductor Line Isolation monitor testing and replacement services Inspection and Testing 3 NFPA No.76 908 15 and 25 kVA, 3-Phase Flush Panel 60. The panel does not have lock-out features, but does have the ability to turn receptacles on and off where needed.00 76 43. (The RA1 remote is also acceptable for this purpose. Proof of the engineered superiority of Square D brand products is found throughout the country in numerous installations, many dating to the earliest applications of isolating transformers. This Line Isolation monitor testing and replacement services may be built into the circuit breaker box for your operating room (in which case it will have a remote alarm portion located somewhere in your operating room if the circuit breakers are outside your OR), or it may be on the wall in your OR. The conclusion must be that the white wire is safe to handle as long as the black conductor is not handled at the same time. This can be important when maintenance electricians are searching for a tripped circuit breaker in an emergency.00 609 58. Hospitals should establish routine programs to test and maintain such equipment as required in NFPA-99. If any circuit shows an unusually high hazard current compared to other circuits, investigate it immediately. Isolation Power System, small local network comprising an isolation transformer, a line isolation monitor, and its Branch circuits designed for Surgical Applications, Systems intended for Life Support, and applications dedicated to Medical Electrical Equipment. Line Isolation monitor testing and replacement services Unique audible tone to avoid confusion with other equipment sounds in the operating room.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 40 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Dual Output Voltage Isolation Panels Trim The trim catalog number is DVC. These circuits interlock so that only the required circuits can be energized at a given time. The secondary circuit conductors must be provided with an approved overcurrent protective device in both conductors of each branch circuit.00 179 40. For facilities with limited equipment, a contactor control panel can be designed to fit individual needs. Today, these loads vary from 20 to 60 A and multiple pieces of equipment are being used.2. 8. RETROFIT packages are available for a fraction of the cost of a new installation!Line Isolation monitor testing and replacement servicess Isolated Power provides protection for both the patient and staff against electrical shock. Hospital electrical equipment receives much physical abuse; therefore, it must be properly maintained to provide electrical safety for patients and staff. Unshielded Transformer Shielded Transformer Courtesy of Steven Engineering, Inc. Installation of circuit breakers rated higher than 60A voids the UL Listing.2. Electrical shock is produced by current, not voltage. 5. 99 sets the limits of impedance to ground of the isolated system and the instructions for testing to determine compliance with the standards. A good commercially available wire insulation for this application is cross-linked polyethylene, having a mineral filler instead of a carbon black filler.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Controlled Power Panels 49 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Mechanical Interlock Panels1 1 Up to 8 outlets can be controlled from these panels. A LIM test may also be preferred from these devices.00 127 3. Line Isolation monitor testing and replacement services A committee must be formed, which meets for the sole purpose of medical equipment control.00 889 24. H2 H1 X2 X1 X Because secondary windings of isolating transformers are ungrounded, a primary to secondary failure may not trip the circuit breaker. While this is no longer a code requirement, Schneider Electric recommends that at least one ground jack be placed in each critical care patient area. The yellow indicator illuminates, reminding personnel that the audible signal is disconnected. Line Isolation monitor testing and replacement services Routinely verify that conductive surfaces are grounded in all patient areas. Single Receptacle 20A Hospital Grade (4) Copper Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 4.00 305 72.5 5. Line Isolation monitor testing and replacement services All medical equipment must be defined and inventoried. Only the accessories are optional. This value is then used to calculate the Total Hazard Current (THC), which dictates what current could flow if a patient were to come in contact with a conductor to ground.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 50 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Controlled Power Panels PLC Controlled Panels1 1 Up to 8 outlets can be controlled from these panels. Schneider Electric recommends using the QO� (snap-in) circuit breaker in isolated power panels because of the ability of the breaker to grab the bus. Interior Code Numbers (1) (2) (3) (4) (5) (6) (7) (8) Interior Catalog Number DVP 2 B 7 6 6 R X D 208/240 V Receptacle Line Isolation monitor testing and replacement services Inspection and Testing 2 is NEMA Type 6 � 50R 208/240 V Receptacle Line Isolation monitor testing and replacement services Inspection and Testing 1 is Hubbell IN16494 120 V Receptacles Colored Red Six 120 V Receptacles Six 30A Green Ground Jacks Size Rating of 120 V Transformer Secondary is 7.2. The branch circuits can be divided between the two systems to keep branch circuit leakage current from exceeding the limits set by the National Fire Protection Association (NFPA) 99 Standard for Health Care Facilities. Suggested boxes are gangable outlet boxes. For example, if the drill is plugged into the system with the ground intact and there is a fault in the drill to the grounded enclosure, that single fault converts the entire system into a grounded system. Components normally included in the surgical facility panel are: Line Isolation monitor testing and replacement services Isolation transformer Line Isolation monitor testing and replacement services Surgical clocks and timers Line Isolation monitor testing and replacement services Line isolation monitor (LIM) Line Isolation monitor testing and replacement services AM/FM, CD stereo system Line Isolation monitor testing and replacement services Audible indicator alarm Line Isolation monitor testing and replacement services Ground jacks Line Isolation monitor testing and replacement services Circuit breaker panel Line Isolation monitor testing and replacement services Double-size film illuminators Line Isolation monitor testing and replacement services Ground bus Line Isolation monitor testing and replacement services Power receptacles Because all of these components are in the same panel, location of this panel within the operating room is critical. Routine housekeeping procedures and incidental spillage of liquids do not define a wet location. Since the amount of wire is often proportional to the number of circuit breakers, keep the number of circuit breakers to a minimum. NFPA No. However, it can be located in a more convenient location. These units contain four ground jack receptacles and a ground bus. Later, the hospital receives a letter containing the test results. Although this unit meets current codes and standards, it has two undesirable features: 1.00 102 12. Degree of susceptibility varies from having an electrical probe or catheter connected to the heart muscle, to having electrodes attached to the outer skin after conductive paste is applied. During construction, keep conduit ends capped so they remain free from moisture. 29-M1989. The increased use of electronic diagnostic and treatment equipment, and the corresponding increase in electrical hazards, has resulted in the use of isolated ungrounded systems in new areas of the hospital since 1971. PowerLock Receptacle 20A Hospital Grade (4) Copper Equalizer Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 4. The component system, on the other hand, invariably results in duplication of functions, high jobsite labor costs, excessive system leakages, and the lack of a dependable single vendor.00 179 1. Any help that can be given to let the equipment operator know that his/her device is in a correct and safe condition is a benefit to both patient and operator alike