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

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 service and/or consulting.

    BiomedRx Inc.

    8306 Wilshire Blvd.
    Suite 777
    Beverly Hills, California
    90211

    Tel: (424) 204-2382

    Email: info@biomedrx.com

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    Line Isolation monitor testing and replacement services in Wichita

    Line Isolation monitor testing and replacement services in Wichita

    Line Isolation monitor testing and replacement services in Wichita

    Line Isolation monitor testing and replacement services in Wichita

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

    Line Isolation monitor testing and replacement services in Wichita

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this unit over any previous LIMs. In the event of power outage, both clock and timer functions will continue to work for at least 24 hours. In most cases, an operating room panel with eight or ten secondary breakers is sufficient. All of our service visits are documented in Hi-definition digital video, and provided to our clients online via this company extranet. Non-flammable anesthetizing location requirements are also covered in NFPA No. A permanent sign must be displayed at the entrance to all flammable locations.562 dia. System Wiring and Conduit The selection of a proper conductor is one of the most important design criteria 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. Locate an additional module behind the surgeon, near the head of the table. Many hospitals and consulting engineers are unaware of this document and its requirements. 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. The Line Isolation monitor testing and replacement services constantly probes for possible current connections and displays the potential or existing leakage. This is significantly better than the other brands on the market which sound between 4.0 kVA. This compound is usually unnecessary, because most of the runs on an isolated system are short. 5. 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).3. Using the example as above, but with the black wire, the connections cause different results. 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.25 11 8 12 4 Stainless steel trim plate MCTS95135 9.00 1524 30.50 89 15. However, during operation, malfunction may occur due to spillage of liquid or cable damage (cart running over power cable or equipment being dropped).377R Courtesy of Steven Engineering, Inc. The resistance depends on the body mass and moisture content.5 7. This creates a nightmare situation for the hospital electrician/biomedical engineer or whoever is in charge of equipment testing.00 737 27. When specifying a surgical facility panel, consider which location is best for all concerned personnel. Ground fault location capabilities are also available, providing notification of the source of the fault in a timely fashion.3. Once the predetermined number is achieved, the rest of the circuits are locked out. Failure to follow this instruction will result in death or serious injury.-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.anest.50 140 4. 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.-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. (The RA1 remote is also acceptable for this purpose. 2.3. 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. NFPA-99 requires yearly testing of Isolated Power Panels.1. 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.1V 1201000 Voltage across C2 would be: 1. This panel would contain the secondary breakers needed and use either the receptacle module switch or push button control. In addition to these features, model IA1C-PTT provides push-to-test functionality. 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. 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, 7.5 7.-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. Critical care and general care areas can also be considered wet areas. 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. For more than 8 circuits, contact Schneider Electric Medical Products. 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.-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. 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. The minimum claimed hazard level seems to be 10 microamperes (?A) with a maximum level given at 180 ?A.00 102 MCT4RC Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.00 1016 35. The standard transformer uses a 220 �C rated insulation system.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.00 787 8. When electrical devices are connected across two conductors on the transformer, they work as if they were connected directly to a grounded system.2. 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. 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. The system has four sevensegment displays with large, red LED characters easily read in high ambient light.50 114 3. Like the mechanical interlock panel, this panel will serve various locations. This equipment includes elapsed time indicators for the operating room. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment. The LIM2010 has an automatic self-calibration and self-check feature. Standard Type THHN wire is definitely unsuitable. 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 black conductor is safe to handle as long as you do not simultaneously touch the white conductor or any grounded item. 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. Included remote indicators may feature a built-in test button and a transformer overload Isolated Power System Inspection and Testing LED. 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. 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. Proper grounding dissipates static charges and shunts fault currents and normal leakage currents away from attendants.00 1067 29.5 208 208 240 240 277 277 480 480 208/120 240/120 208/120 240/120 208/120 240/120 208/120 240/120 DVT722 DVT723 DVT732 DVT733 DVT742 DVT743 DVT752 DVT753 10. 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. If additional receptacles are required, up to 16 secondary breakers can be used.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. With isolated power systems at one fault to ground the circuit breaker does not trip, maintaining power to the equipment. 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.00 381 32. 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.00 102 3. 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. 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. Little traffic occurs between the support team and the anesthetist. 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. 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. This assures the hospital and consulting engineer that the equipment meets all existing codes and standards. 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. The power cord ground wire could easily accommodate a 5 mA fault and stay well within the requirements of NFPA No.562 dia.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 5.00 356 24.-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. 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. 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. These panels are UL Listed under Section 1047 Isolated Power Systems Equipment.75 and 5. ORICAC and ORICA5C Both of these models are furnished with green, yellow, and red indicator lights, plus a milliammeter. Section 6. 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. Line Isolation monitor testing and replacement services Ability to provide both critical service and normal service power from one isolation panel. For proper continuity, test the ground system associated with the isolated power system before its initial use.0 686 7. 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., though a human) is detected. These two currents should be exactly identical, whatever they are. 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 40.00 686 49.00 1372 29. Courtesy of Steven Engineering, Inc. Many feel that since hospitals no longer use flammable gases, isolated power is of no benefit. When designing the modules that make up its systems, the Schneider Electric engineering department considered every important requirement for isolated systems. Order the appropriate number of QO or QOB circuit breakers. This test can also be conducted with an 0�0. All fluorescent lighting should be on grounded power.5 7. Line Isolation monitor testing and replacement services The necessary test equipment must be leased/purchased, and be kept on site. 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. Courtesy of Steven Engineering, Inc. 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. B. 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. Shaded areas denote possible conduit entrance 30. 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.-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. However, it only recognizes unbalanced resistive or capacitive faults; it cannot recognize a partially grounded system. When designing the system, use it in conjunction with NFPA No.0 5. NFPA No. 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 cross-sectional area is usually expressed in units of AWG (American Wire Gauge).00 152 6 and 9 kVA, 3-Phase Flush Panel 6 and 9 kVA, 3-Phase Surface Panel 21. The amount of equipment present varies by hospital, affecting the complexity of the program. The hospital administration and designer are responsible for determining the degree of patient susceptibility and selecting the correct equipment.00 178 15. If you accidentally touch this wire (never do this!) while it is powered, you have a significant likelihood of dying. 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. 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." The early standards were not generally adopted in new hospital construction until 1947. Line Isolation monitor testing and replacement services Unique audible tone to avoid confusion with other equipment sounds in the operating room.00 381 32. 99.00 152 12. Typical Surgical Facility Panel Courtesy of Steven Engineering, Inc. 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.00 305 9. The M5IAI50 is a smaller version. This reduces any confusion caused by an alarm going off in the operating room from circuits that don't need to be energized. The transformer would function electrically with no indication of this failure.-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. With the broken ground, no alarm goes off, and now the case of the device is connected to the power system voltage. The shield establishes a ground plane between the primary and secondary. Person Line Isolation monitor testing and replacement services Inspection and Testing Current flowing through our 1000 Ohm person Grounded Isolated Power System V. 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. The interposing contact controlled panel is a panel with a maximum of four circuits available. The elapsed time indicators can interface with a patient monitor, code blue alarm, or other equipment. 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. 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.5 5. Panel interiors include one 3-pole secondary branch circuit breaker (Type QO). This can be an inconvenience since this type of control system requires someone to select which room will be turned on. 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. 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. 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. 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. Line Isolation monitor testing and replacement services Operation either as a single-phase or three-phase unit. 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. 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.13 156 7. It's operation is simple and any failure generally results in equipment or circuit disconnection, very quickly within less than 1 cycle. 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 ideal for something such as a hairdrier, in which an equipment fault can be disastrous. It can, however, be used for the ground conductor.5 kVA transformer. 2 Transformer included for 3 kVA and 5 kVA when interior is ordered. 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. 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. The location of this panel is important; correct placement will keep electrical and ground cords out of the traffic area. Installation Convenience The Square D brand hospital isolated power system was designed for convenient and economical installation by electrical contractors. It contributes less leakage to the system because of its higher impedance connection ground. Normally, this current is shunted around the patient via the ground conductor in the power cord. This emphasizes the need to place the isolation panel as close as possible to the point of usage. The RA1PM model consists of the RA1 remote alarm indicator and a stainless steel mounting bracket (RA1PMB).9. The components are factory engineered, wired, and thoroughly tested to provide the ultimate in protection, reliability, and ease of installation. We use a receptacle module with a remote alarm indicator built into it for this purpose. 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. Square D brand isolation panels use a non-ventilated enclosure for most panel designs. Surgical facility centers provide isolated power protection while minimizing footprint and standardizing individual components required in the operating room. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment. UL derives its standards for performance requirements from the applicable NFPA standards and the NEC. Digital Clock or Timer The Clock/Elapsed timers are complete microprocessor based units that display either time of day or elapsed time information.50 165 . Non-flammable anesthetizing locations can be further divided into locations that are subject to becoming wet and those that are not.-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. low profile panel is available from 3 to 10 kVA and includes a NQOD type interior, accepting snap-in or bolt-on breakers. 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.0 10. The potential difference measured between these two points should not exceed 2 V. Current codes and standards require that all conductive surfaces within the patient vicinity must be properly grounded. The interiors, trims, and transformers can be shipped later. 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 6.00 305 40.2 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.5 kVA and 10 kVA ICU/CCU Panels Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.5 38 27. 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. There are several ways to isolate power, but the most common and economical is to use an isolating transformer. 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. 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. THE GROUNDED SYSTEM Diagram 1 Diagram 1 shows the schematic of a conventionally grounded system. The limit is usually reached when 12 to 14 branch circuits are connected.5 394 29. The Iso-Gard LIM is manufactured in the United States by Schneider Electric. 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. For more than 8 circuits, contact Schneider Electric Medical Products.3. They may also lie in pools of fluid.5 38 27. The unit has an extra set of normally opened and closed dry contacts for use with other external alarm systems.00 203 42." 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. This includes the technicians responsible for maintaining the systems. 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. Ensure the alarm will silence when the silence button is pressed. It has the same features as the M5IAI, but mounts in a 4-gang, 3 1/2 in. If you need annunciator panels with a greater number of circuits, contact your local Schneider Electric representative for dimensions and cost. 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. IA1C and IA1C-PTT The IA1C is the first in the series of low voltage remote alarm indicators. Ground detectors were standard equipment until about 1970, so many of these units are still in use. The LIM2010 has an automatic self-calibration and self-check feature. They are furnished with Type Line Isolation monitor testing and replacement services Inspection and Testing 304 brushed stainless trim. 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. 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.-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. Inexpensive to build and reliable because of its simplicity, the ground detector is unaffected by and does not create any radio frequency (RF) interference. 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. Operating Room Layout Before the electrical design of an operating room begins, some important information should be acquired from hospital personnel. The timepieces are designed for areas requiring rapid and precise time measurements. This is an important feature in an isolating transformer since it provides for intermittent heavy loads, like those presented by hypothermia equipment. Designed to fit into a 2-gang, 3 1/2 in. 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.3.00 508 30. The NEC requires that an audible and visual indication of alarm be available wherever isolated power is used. Between 10 and 20 mA, the person experiences muscle contractions and finds it more difficult to release his or her hand from an electrode. Continuity Of Supply Probably the strongest argument for the application of isolated power is where continuity of supply is paramount. 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. Thus touching ground has little consequence to you, if you are in such a room. deep, depending on the application. The panel is located behind the support team, near the head of the operating room table. This ground jack provides connection to the grounding system for redundant grounding of exceptionally hazardous equipment.0 686 7. Wire pulling compound with ground conductor.00 51 2. 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. Be sure they are clearly visible to personnel.2. Section 6. See accessories for more information. Such as: 1. 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. 5 Line Isolation monitor testing and replacement services Inspection and Testing 5.437 Diameter Mounting Holes 11 30. However, when the other terminal of the light bulb touches the kitchen plumbing, the bulb illuminates as it did when it touched both wires.-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. Circuit runs must be kept to the shortest length possible. The units are completely factory wired and tested. 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. Though not an NFPA code requirement, the shield is highly recommended by leading engineers. 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. NFPA No. This can be done by connecting two to four receptacles to one circuit breaker. 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. 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. Impedance must exceed 200,000 ? to conform with NFPA No.2. Isolated Systems The term "isolated system" can apply to many systems in a hospital, such as the management of patients having a communicable disease. They operate in either the 12- or 24-hour time mode, depending on how the hospital wishes to use them. The second ingredient has been discussed but bears repeating: there must be good communication between the parties planning the system for the hospital. 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. 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. Section 3. Reviewing them not only helps determine requirements for a system, but helps identify the equipment currently used in the hospital. 99.7, 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. 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.-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. 3.2. Courtesy of Steven Engineering, Inc. Make the final selection after weighing the pros and cons of each method. The Iso-Gard LIM is component recognized by UL under UL1022 Standards for Line Isolation monitor testing and replacement servicess.-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. The THC (Total Hazard Current) signal is processed and routed by dual-channel circuitry to the display unit and output alarm relay. Disconnect the LIM from the circuit during this test.00 1067 44.4 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. 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. NOTE: Mount unit at least 48 in. 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. 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. 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. Other NFPA standards are also referenced in Article 517, such as NFPA-101 and NFPA-20. The "connection" should be below 2 milliAmperes (mA).00 102 17. 3 Panels available with red hospital-grade duplex receptacles. The door covers the branch circuit breakers and line isolation monitors to help restrict unauthorized access. Its position indicates how much current could flow from either conductor of the isolated system to ground if a path was provided. Upgrade to a digital MARK V LIM. Training: "Administrative authorities should ascertain that electric maintenance personnel are completely familiar with the function and proper operation of ungrounded electric circuits.7 mA. Back boxes for the 50 Series are customer provided. This insulation system allows, by NEMA�ANSI standards, a temperature rise of 150 �C above a 40 �C ambient. Periodically test these pieces of equipment and tag the equipment, showing leakage current readings.50 (4) . Grounding of circuits must be performed as required in Article 250 of the NEC. by 12 in. However, ungrounded wiring and grounded service wiring cannot occupy the same conduit or raceway. An "in-use" lamp and magnetic door switch ensure that the proper amounts of circuits are online simultaneously.8. This chapter only covers a few of the important points within these standards. The COM460IP has many customizable options, including the ability to act as a Modbus/TCP gateway for status information.562 Dia. Hospital electrical equipment receives much physical abuse; therefore, it must be properly maintained to provide electrical safety for patients and staff. A single ground fault condition will also not trip the main circuit breaker. 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. Person 120V 0. 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. General Application Criteria A. The alarms indicate the condition of the LIM. However, Schneider Electric limits the temperature rise of the isolation transformer to 80 �C maximum, further ensuring system reliability on all standard transformers.00 254 7.2 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. This induces a current in the secondary winding, which is completely insulated from the primary winding by electromagnetic induction. Conduct this system impedance test without any secondary equipment connected to the circuits.985 mA Allowed for System Hazard Current Alarm Band Width 0. The power receptacles are "hospital only" locking-type receptacles.00 305 12. 8. See page 54 for panel-mounted indicator alarms which can be added to this panel. Holes Selector Switch 14 ga.3.6. 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.00 1829 20.00 102 Safe/Silence Hazard Stainless Steel Trim IA4CI Dual Dimensions: Inches mm 13. 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.00 203 1. 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. 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.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.5 120 208 240 277 480 80A 45A 40A 35A 20A 6SLP116 6SLP216 6SLP316 6SLP416 6SLP516 7H5S11DDIL 7H5S21DDIL 7H5S31DDIL 7H5S41DDIL 7H5S51DDIL 7. 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. Schneider Electric has a variety of control schemes from push button to switches located in the operating room. This control may be customized to meet a particular system's requirements. One advantage to turning the circuits and remote indicators on and off is the elimination of alarms where the power is not being used.00 508 20.1 ?. The result is a dangerously high secondary voltage (primary + secondary) because of auto-transformer action. Holes Top and Bottom 20. 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. Wire resistance is inversely proportional to its cross-sectional area.0 1016 42.0 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. 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. 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. 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. The principles are no different outside the operating room. should be demanded for use in 120 V, 208 V, and 240 V applications. 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. The variety of Square D brand modular system components gives the electrical consulting engineer and architect great design latitude. 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).00 1067 (4) . The hazardous levels of current for many patients are amazingly smaller. The duplex hospital isolation panel accommodates 16 branch circuit breakers for each of its two systems. The fault impedance should be inserted directly into the LIM with all secondary wiring disconnected. 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. Therefore, this handbook does not cover the flammable location in any detail. XRIAI Dimensions Hinged Door 12 Gauge Stainless Steel Front Trim Door Latch X-ray Receptacle 8." Section 6. 2. In the following example, we will use the configuration shown on page 22.5 120 208 240 277 480 120 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. The grounded system is excellent where unskilled operators or electrically unknowledgeable people come into contact with everyday equipment.3.00 127 Hinged Door with Lock and Key Power Lock Receptacles 14 Gauge 20A Hospital Use Only (8) Stainless Steel Ground Jacks 30A (6) 5. 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. Even though not required by code, hospitals should consider revising these systems to match current standards.5 kVA 1 Line Isolation monitor testing and replacement services Inspection and Testing 10. 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. 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. 56A was incorporated into a new standard, NFPA No.00 762 24.-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). When installed, such a power system shall conform to the requirements of 6. As was previously mentioned, codes are continually refined and updated, with frequent amendments between major publications. Mount the control panel for the timer at the five foot level with the timer mounted at the seven foot level. HGC Series-Hospital Grade Ground Cords and Jacks BENDER hospital grade ground cords are available in various lengths for implementing an equal-potential environment. Adult patients with cardiac arrhythmias can be electrocuted through the misuse of pacemakers connected directly to the myocardium. Holes 1.. This is the only way to ensure the system is properly installed. BiomedRx can bring any healthcare facility into compliance with NFPA code requirements. The unit is totally enclosed and non-ventilated to help keep out dust, dirt, recirculating air, and cleaning solutions. 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.2. This panel configuration is ideally suited for having a centralized location for receptacles and ground jacks. These provisions were met by supplying each critical patient care area with a specified type of ground jack.00 533 7. by 8 in. As previously mentioned, many large hospitals may have well in excess of 10,000 pieces of equipment.00 1626 62.) NOTE: This is not recommended on a grounded system! Schematic representation of an Isolated Power System B.3 and 6. Loss of integrity in the ungrounded system does not affect the operation of life support devices. Corrective steps are taken if improper operation is observed. Following a rigid maintenance program can reduce electrical hazards significantly. Mtg. All panels are designed to accept up to 16 secondary breakers per UL. 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. By utilizing the EDS series devices, the source of the fault in the isolated power system can be identified within seconds. 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. Reduced shock hazard 2. The IPS is a system in which the transformer neutralground connection has been deliberately omitted. 5.0 737 5. Also, manufacturers have sometimes discontinued production of wire types that we have recommended. Combinations of resistive and capacitive faults are placed on the isolated power system. panels were put aside in favor of the standard panels previously mentioned. See the table on page 39.2. Push button control can be substituted for the switch in the receptacle module. These modules use standard electrical gang boxes, therefore back boxes are not included.1 states "The Health Care Facilities shall provide programs of continuing education for its personnel. 99, which is included as a reference in Article 517. The electrical portion of the motor must be completely insulated from the conductive enclosure. Person Line Isolation monitor testing and replacement services Inspection and Testing Voltage across our 1000 Ohm person I. 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. Reduced Shock Hazard A.5 dielectric strength may not be obtained. 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. C. The meter is calibrated in milliamperes (mA) of current. Line Isolation monitor testing and replacement services Maximum of four secondary branch circuit breakers. Suggested boxes are gangable outlet boxes. Three-phase isolation panels can range in size from 3. The equipment should be spread out through the system to avoid unnecessary alarms.6. This would have warned you of the single fault somewhere in the devices present in the room. To avoid these risks, generally all wires from anesthesia monitoring equipment are themselves "isolated" and do not have the ability to "ground" the patient.50 114 3.-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.00 559 8.00 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. If it were not, arcing would result when the black conductor of the grounded system touched the plumbing.2. Types of LIMs Several types of line isolation monitors are available.00 283 12. 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. The basic control scheme is the mechanical interlock panel.00 1422 57. defective equipment).50 241 13.00 178 27. Advance warning system of what their equipment condition is. 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.50 114 BATTERY TEST HRS. If more circuits are required, consider the use of a second or even a third isolation power panel. 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. 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.4. Enhanced features and improved functionality make this the most flexible LIM on the market today.-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.e. Reduced Shock Hazard 2. 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.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. Panels are controlled by means of a PLC. Design Guide I. RA1PM (Panel Mount) ORICA ORICA5C Courtesy of Steven Engineering, Inc. 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. The information contained here regarding codes and standards is current as of this writing.0 mA 0 0.00 127 10. 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.0064 ohms/foot. Patients who are anesthetized, or are demobilized through illness, restraints, or drug therapy, also have a higher degree of electrical susceptibility than normal individuals. The consulting electrical engineer must be the nucleus of the team that makes the decisions. The size of the back box will depend on the outlet options for the overall device. Square D brand isolation power panels use the QO snap-in breaker as standard. 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. H2 H1 X2 X1 X Because secondary windings of isolating transformers are ungrounded, a primary to secondary failure may not trip the circuit breaker. 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.4. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs. This "short circuit" would disengage the circuit breaker or blow the fuse as it did when the live conductor touched the plumbing. Recently, manufactures have rescinded their notation in their specs for XHHW and XHHW-2. 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. This is extremely difficult to do since the availability of these wires differs from region to region.88 22 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The panel can be applied to both critical systems and normal system power. The size of the back box will depend on the outlet options for the overall device. The LIM2010 may be configured for additional alarms, including transformer overload and overtemperature, overvoltage and undervoltage, and more.-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. Primary voltage to these panels can be either 208 or 480 V delta; the secondary voltage is usually 208 V. 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. This unit can connect to that point by a single conductor. Section 6. Line Isolation monitor testing and replacement services Use completely sealed and insulated remote controls for use in patient beds.43 392 3.2(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. Line Isolation monitor testing and replacement services Only trained personnel should perform these procedures. This would increase system hazard current. 12.98 177 Clock Display Timer MCT12B Dual Dimensions: Inches mm 3. Because the household appliance does not open a fuse or trip a circuit breaker the appliance places resistance between the two conductors. 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. 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. These are great devices and are highly recommended. 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.00 102 4.The 3-phase panel should be used for 3-phase applications only. The PLC is programmed to operate a predetermined number of circuits at one time. The "MUTE" button is used to silence the remote audible alarm. 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. The special circuitry developed by Schneider Electric monitors both sides of the line continuously, eliminating the need for switching. However, if the ground wire is broken, most of the current would flow through the patient. Typical configurations include an x-ray or laser power receptacle matching the NEMA plug configuration of the equipment. The GFCI detects this quickly, and shuts off power to the system. 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.00 152 6.3. Extra level of protection will keep down liability claims. For more than 8 circuits, contact Schneider Electric Medical Products. 7. BENDER isolated power system equipment are designed in strict compliance with UL 1047, UL 1022, and UL 50.25 57 2. This very hazardous condition can cause an electrical hazard to the patient or medical staff. 99 addresses fire, explosion, and electrical safety in hospitals.00 610 10. During this orientation, the technician will answer any questions the hospital staff has about the system. 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. This includes standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff. 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 1067 8.00 1295 12. System Design A. Isolated Power Systems � Explanation D. 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 1/0.5 kVA panel is available with non-vented trim by using a 10 kVA transformer. A 5 kVA isolation panel is recommended for operating room use. It is recommended that bolt-on breaker bus connections be checked for tightness no less then once every 12 months. All hospitals should have copies of the current standards for reference; the design engineer must have this information available. Upgrade to a digital MARK V LIM. 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. NFPA No. This inability to sound an alarm (to recognized balanced fault systems) is the main reason codes and standards no longer allow its use.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. 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. Please find the reasons to keep Isolated Power in all Operating Rooms: 1. Conclusion Isolated Power Systems provide many advantages and levels of protection over conventional grounded systems. This selection process requires close communication between the hospital administration, medical staff, and the consulting electrical engineer.00 178 . Energize the isolation panel by closing the primary circuit breaker. 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. 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.4. This gives the hospital personnel a choice of what to do since the equipment may be supporting the patient's life.0 127 29.5 38 27. Continuity of power is maintained on systems where interruption cannot be tolerated. 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. 4. When a Square D brand controlled power panel is used, locate it as centrally as possible in the area it will serve. C. Each operating room was required to have a minimum of six ground jacks.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.4. 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. Line Isolation monitor testing and replacement services Available in either 5 or 10 kVA ratings. This protection, however, may not be adequate for frequent or serious disturbances. The calculated resistance should be below 0. With this monitoring, there must be some warning when the system becomes grounded. In the past, projects run by capable consulting electrical engineers have required modifications costing several thousand dollars per operating room. 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. 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. The first step is to isolate the receptacle from the grounded service.00 686 12. In the past, most equipment operated on 60 A circuits.00 283 4. Even in the most sophisticated operating rooms, the equipment load rarely exceeds 5 kVA. Isolated Power Systems � Explanation 4.7 of NFPA99 2012 states "Operating rooms defined as wet procedure locations shall be protected by either isolated power or ground fault circuit interrupters. 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. Back boxes for the 120 Series are ordered separately.3. The cord is crimped to both the conductor and the insulation, providing maximum strain relief.0 178 14 Typically 5. All features, as well as device setup, are carried out on the connected MK1554 chronometer remote. 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.00 1524 42. Line Isolation monitor testing and replacement services Use electrically insulated tools. Courtesy of Steven Engineering, Inc.562 Dia. 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. The panel will serve various locations within the hospital. 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. NFPA No. 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). Other hospital isolation panels can supply only one output voltage. The unit is available in 5 or 10 kVA ratings and includes a stainless steel cover. 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. The services of a factory technician are available from Schneider Electric. 99, which was updated in 1984, 1987, 1990, 1993, 1996, and 1999, and in Chapter 4, which was updated in 2002. NFPA-99 prohibits the use of extension cords and multiple outlet devices in operating rooms except under certain conditions.00 508 12. NOTE: Keep in mind that this meter merely predicts the possibility of the condition; it does not indicate that current is actually flowing. Its operation is based on a patented principle implemented using reliable and time-tested hybrid technology. 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. A good commercially available wire insulation for this application is cross-linked polyethylene, having a mineral filler instead of a carbon black filler. 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. 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. Most hospital operating rooms have a set traffic pattern and positioning for the operating room table.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. See page 54 for panel-mounted indicator alarms which you can add to this panel. However, grounded power systems are a potential killer should a grounded person come into contact with a line conductor.1 ohm meter. This situation may be represented by the equivalent circuit shown in Diagram 6.50 114 4.2. Actuation of the test switch shall activate both visual and audible alarm indicators.2 No. 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. The average adult exhibits a resistance between 100,000 ohms (?) and 1,000,000 ?, measured hand to hand. Leakage Currents Electric equipment operating in the patient vicinity, even though operating perfectly, may still be hazardous to the patient. This panel works like the PLC panel, but limits the output to only one circuit at a time. NFPA No.00 178 42.50 114 3. Something for nothing �noise reduction 4. Use these panels for three-phase loads only; they cannot be used to supply power to 120 V single-phase loads. These difficult runs can be anticipated and provided for by using oversized conduits to ease the situation. holes 14 (2 top, 2 bottom for mounting) Shaded areas denote possible conduit entrance 27. NFPA-99 requires yearly testing of Isolated Power Panels. 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.00 1524 60. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. 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. It is important to remember that an increased number of circuits will also increase the total hazard current. 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. They are furnished with stainless steel trim plates. 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. 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.00 305 36. 1 ?A per ft of wire Courtesy of Steven Engineering, Inc. Continuity of power 3.2. This includes standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff. Thus, everything attached to the secondary conductors of an isolating transformer will partially ground the system.00 762 74. This series is packaged in a durable flush mounting phenolic case. Avoid the use of wire pulling compound since it increases the capacitive coupling.5 kVA and above.-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. Other stations wired similarly.-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. The hinged access door to the dead front circuit breaker and the LIM compartment has a lock to prevent unauthorized entry.0 178 15. Any hospital considering design changes to electrical systems in critical care patient areas should obtain the services of an electrical consulting engineer. 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. The portable electric drill probably has a three-prong plug. These units contain four ground jack receptacles and a ground bus. 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. Built-in test circuit to exercise the alarm without adding to the leakage current hazard. 1 Line Isolation monitor testing and replacement services Inspection and Testing convert to grounded, fault no.-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. The Iso-Gard LIM, with its microprocessor-based technology, is impervious to all types of electrical noise interference found in hospital operating rooms. The white conductor (known as the neutral) is grounded when it is installed by the utility company. Enclosures Enclosure back boxes are constructed of cold-rolled steel that is degreased, phosphatized, and finished in gray baked enamel.-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.50 343 4. 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. Description Catalog Number Dimensions (in. Application The design of isolated systems from Schneider Electric ensures that all pieces of a system are compatible with each other. The boxes are designed for flush mounting, but are available for surface mounting on request.0 kVA 7 Line Isolation monitor testing and replacement services Inspection and Testing 7. 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. System Comparison The previous section illustrates that conductors of an isolated system are safer to handle than are the conductors of a grounded system.00 203 8. 16.00 203 40. Mtg. 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.5 4.562 dia. RA1WM The RA1WM consists of the RA1 remote alarm indicator and a stainless steel, decorator-style cover plate.38 86 1. When the system becomes partially grounded, the warning is still necessary, but a limit must be set for the warning to be sounded.0 10. 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. Surgical Facility Panels (SFP) The surgical facility panel offers another method of providing isolated power in an operating room. If designated as a wet location, extra electrical protection is required. The dual output voltage panel has space for two secondary breakers for the 208 V or 240 V side of the panel. Consequently, a system to fit the special needs of each hospital is practical. The COM460IP connects via Ethernet connections to an existing communication network.2. Schneider Electric recommends that no more then four outlets (2 duplex receptacles) be fed from one circuit. Surgical facility panels are custom designed and assembled; this allows each hospital to specify the individual components needed in that hospital.00 559 42.6 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. 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.00 1448 Shaded Areas Denote Possible Conduit Entrances Piano Hinge (Full Length of Door) Stainless Steel Cover . Control Panel (MCTCT) Designed to operate with the MCT12B digital clock (see above).8. The secondary circuit conductors must be provided with an approved overcurrent protective device in both conductors of each branch circuit.00 179 1. Line Isolation monitor testing and replacement services A committee must be formed, which meets for the sole purpose of medical equipment control. Contact Medical Products Marketing when multiple secondary circuits are necessary or for the availability of UL Listing. Change letter "C" to letter "D", e. Section 6. The electric drill has an electric motor which is completely enclosed in a conductive housing. UL 1047 This is the UL Standard for hospital isolating equipment.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. Failure to use the grounding conductor in power cords causes a dangerous electrical hazard.-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. To conduct this test, place a 0�1 milliammeter between either line to ground and measure the current.0 1016 42. During construction, keep conduit ends capped so they remain free from moisture. In this example, we assume that nonisolated patient monitoring leads are used. In spite of this great versatility, all Square D brand modules interface with each other perfectly. If these values significantly increase, inspect the system and take corrective action.00 533 7. Section 6.9 of NFPA99 2012 addresses Isolated Power Section 6.50 38 33. 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. Grounding Grounding in a patient care or anesthetizing location is an important safeguard against shock and electrocution. There are distinct advantages to integrating power ground receptacles into one enclosure, rather than in individual power receptacles scattered around the room.18 208 3.8 of NFPA99 2012 addresses Wet Procedure Locations. A LIM is required to continuously check the resistance (impedance) of the total isolated ungrounded system to ground. 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. The MK2430-11 features 12 digital inputs allowing messages from other technical equipment to be recorded and displayed. 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.50 343 HOLD 2 BATTERY TEST HOURS MINS COUNT 2 HOLD 3 COUNT 3 HOLD 4 COUNT 4 4. At the same time, the Iso-Gard LIM uses an advanced methodology to monitor hazard current without interfering with other sensitive patient monitoring equipment. Considerable controversy exists about the actual danger level for a patient who has a direct electrical connection to his or her heart. 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). However, each team member contributes vital information to the system design. 99 defines the items in an anesthetizing location, which must be powered from the isolated ungrounded system.0 1067 12. The BENDER ZT1591 operates independent of line frequency.00 179 1. 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.-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.00 737 6. These patients may require special protection even though their normal body resistance has not been intentionally bypassed. The LIM2010 may be configured for additional alarms, including transformer overload and overtemperature, overvoltage and undervoltage, and more. The jack also allows connection to the grounding system for testing. 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. 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. CONCLUSION We have examined how the Isolated Power System can help protect the patient from electrical shock hazards. In the past, the common control system was a series of selector push buttons, located in the panel, which controlled the receptacle-energizing mode.). 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. This is the first step toward having a working system, but it is only one of four ingredients that make up a superior system. Now let's use the same kitchen receptacle to show a comparison between a grounded system and an isolated system.00 203 9.00 152 14. First we calculate the total leakage current from L1 to L2 .3. When one terminal of the light bulb touches the black conductor, nothing happens.00 508 42. Controls for both displays are on the face of the unit. 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.17 157 7. This gives the surgeon easy access to power for surgical equipment. The upper display is a time clock and the lower display is an elapsed timer. The code no longer allows wire pulling compound to be used in conduits for isolated power systems.50 89 8. Demand that any appliance purchased for use in patient care areas be labeled under this UL Standard for use in the specific area designated.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. Surgical facility panels are custom designed and assembled; this allows each hospital to specify the individual components needed in that hospital. BENDER type XRM receptacles modules are recommended for use with this panel configuration. Much has been written about current levels considered lethal for catheterized and surgical patients. We can measure the voltage drop across the system capacitance by using a high impedance voltmeter. This slim design is of particular benefit when the isolation panel is mounted in an operating room where wall space is limited.2. See accessories for more information. NOTE: 2-gang back box not supplied.00 305 5.5 13. This provides an additional layer of safety to protect both operators and patient alike. The NFPA No. 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). Electrical shock is produced by current, not voltage.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. An increase to 100 mA will cause ventricular fibrillation. The design prevents accidental entry into the transformer section when operating the circuit breakers or LIM test circuit. 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.2 No.3. We can provide your installation, repair, calibration, preventative maintenance and electrical safety inspection services in support of your standard or extended warranty. Sometimes, this interference can be detected on patient monitoring equipment, creating difficulty in gathering information needed by the medical staff. Also check for audible and visible alarms attached to the LIM. The ORICAC has a 2 mA milliammeter, while the ORICA5C has a 5 mA milliammeter. Certain medical conditions may render a patient particularly vulnerable to electrical shock. 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. 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.50 241 13. 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. Isolated Power Systems contain a Line Isolation monitor testing and replacement services (LIM). This monitor is included as a standard component of all Square D brand hospital isolation panels.00 508 6.00 406 Shaded areas denote possible conduit entrance Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The type EDD LIM still uses a switching circuit and still causes interference with patient monitoring equipment. This panel is perfect for smaller applications where the facility has up to four operating rooms. 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. 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). This also allows someone to change circuits at will. The Isolated Power System does not have this low impedance connection.0 kVA copper wound, low leakage, with electrostatic shield. Leakage and capacity determine the number of circuits energized at one time allowing the panel to operate safely. This is important to note since this could affect the overall installation of an isolated power system." In an isolated power circuit, a ground fault would result in an alarm, but power would not be interrupted. 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. Flush Catalog Number Surface Catalog Number 15H5S22DDCI 15 208 208 90A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof. BiomedRx maintains the highest standard of service, reporting and documentation in the healthcare industry. Increased use of such equipment as heart monitors, dye injectors, and cardiac catheters increases the threat of electrocution when used within the circulatory system. panel eventually evolved into medical headwalls with isolated power. 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. Features Features of the duplex hospital isolation panel include: Line Isolation monitor testing and replacement services Two complete isolated power systems in one enclosure. Line Isolation monitor testing and replacement services Less installation labor than two panels. If no receptacle is selected, the section is field expandable to two branch circuit breakers by ordering additional circuit breakers, Schneider Electric catalog no. Line Isolation monitor testing and replacement services The technician gives a logbook to the hospital staff.8.0 5. The line isolation monitor shall not alarm for a fault hazard current of less than 3.00 152 Shaded areas denote possible conduit entrance Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.5 7.-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 42.50 165 6. A minimum wall thickness of 2/64-in. The XHHW and XHHW-2 insulation is still the choice since it comes closest to meeting the recommendation. No direct electrical connection exists between the primary and secondary coils.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. The extent of difficulty encountered with these types of interference varies with the installation and design of the patient monitoring equipment. This is because every piece of electrical equipment produces a leakage current. When laying out the operating room electrical system, the location of power and ground receptacles is significant. 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. The housing is connected to a third wire in the power cord, which in turn connects to ground. The most susceptible patient is the one exposed to externalized conductors, diagnostic catheters, or other electric contact to or near the heart.3. 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. 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.0 kVA to 25. The full load design temperature, however, is limited to an 80 �C maximum rise.60 91 15. Be sure to determine the load of secondary equipment being used; very few cases will require a 7. The Line Isolation monitor testing and replacement services (LIM) continuously monitors the Isolated Power System and immediately detects line-to-ground faults. On the other hand, a leakage current of 10 to 180 ?A can injure the patient. 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. Here is a video documentation of a previous isolated power system inspection performed (in English and Spanish) at Kindred Hospital in South Bay, California.-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. NOTE: When ordering the 8CIIAI, modify the x-ray panel interior number by changing the second 'D' to 'N'.-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. 2 Transformer included for 3 kVA and 5 kVA when interior is ordered. It is mounted on a stainless steel trim plate, and includes an audible alarm. In 1949, this committee published a new standard, NFPA No. A note on interpretation of the LIM reading: many variables exist to exactly what current could flow to the patient: 1. This device was designed with the user in mind.-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. An activated alarm does not mean hazardous current is flowing. In addition to biomedical engineering and equipment maintenance services, BiomedRx now offers testing and certification of isolated power systems and line isolation monitors. This control panel contains a set of controls for the timer and two push buttons to set the clock time display.00 305 MCT14B (Bottom View) MCT14B (Front View) Dual Dimensions: Inches mm 13. A receptacle module without a remote alarm indicator is also available. 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. Line Isolation monitor testing and replacement services If included in the team, the hospital maintenance engineer will better understand the isolated system. The conclusion from the previous paragraph is that current flows from the black wire to any grounded conductive surface, of which there are many. 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. Holes 1. This provides a running history for the permanently installed wired system. This third point of contact simply connects the metal case of the drill to ground. 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. IGD Iso-Gard� Line Isolation monitor testing and replacement services (LIM). IPS with our grounded 1000 Ohm person in contact with the line conductor in each system.5 mA Monitor Hazard Current Courtesy of Steven Engineering, Inc.) 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). 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. 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. Each circuit breaker should supply two duplex receptacles, or four outlets per circuit. This demonstrates the energy used when any household appliance is run.-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. If the residence was built within the last 30 years, the receptacle most likely has three openings, not two.0 686 7. (Leakage current may at this time be measured by connecting a mA or microamp meter from either L1 , or L2 to ground.42 112 4. Includes the MCTBP battery pack, see page 66. 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. 4890BR9201 for more complete information and specifications. Alarm and Display Features: Status and alarms are viewed on an easy-to-read LCD display. Isolation Transformer The heart of the system is the Square D brand isolation transformer.0 305 (4) . Courtesy of Steven Engineering, Inc. 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 .) 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 4.0�25. The method to be used is a matter of personal choice. Interlocking circuitry allows predetermined locations to be used at any given time. Isolation panels serving a single bed in a critical care area require only eight secondary breakers.-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. 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. Devices with broken or damaged ground wires should be taken out of service and repaired. The human body acts as a large resistor to current flow.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. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. This type of LIM connects to ground through a high resistance so that it can measure the impedance of the total system. It does not generate any interference that could affect patient monitoring devices. 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. 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. If one of its terminals touches the white conductor in the receptacle, nothing happens. 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.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied. 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. Utilizing the latest in line isolation monitoring technology, the LIM2010 provides advanced warning of faults to help reduce downtime and increase operational efficiencies. 13. When initially energized, a piece of equipment may operate correctly and be in a safe condition. Reduced Fire Hazard 6. 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. However, the displays are not visible during this time interval.4. The neutral of the transformer is bonded to ground, which, if adequately sized, will provide an equipotential bond between the neutral and ground conductors. Multiple LIM2010 devices may also be controlled by a single, intellgent remote station. At this time, take LIM readings with all circuit breakers closed and with all circuit breakers open. The entire panel assembly is listed under UL Standard 1047, Hospital Isolated Power Systems.5 + 7. Line Isolation monitor testing and replacement services Wet Locations: patient care areas normally subject to wet conditions while patients are present. However, checking anesthetizing and critical care areas more frequently than general patient areas is recommended.2.g. Line Isolation monitor testing and replacement services Additional QO220 circuit breakers to increase panel from 8 to 16 branch circuits. Rigid metal endoscopes, urological equipment and other metal used in surgery can make the connection to ground. Because the resistance of a grounding conductor is extremely important, you must give it careful consideration.00 76 43. Line Isolation monitor testing and replacement services Ground bus bar with 25 terminals. 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. 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. What we commonly call "insulators," such as rubber or plastic coverings on wire, are actually just poor conductors.4. Back boxes for the 50 Series are customer provided. Courtesy of Steven Engineering, Inc. 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. The limitation for total system hazard is set at 5 mA. To perform this test, attach probes between metal surfaces and the room ground bus; verify the ground connection.00 432 12.00 330 12. Sound ratings of 30 dB or less are guaranteed on units 5. The LIM is equipped with a meter (also required by code) that gives continuous indication of the system's condition. Press the push-to-test button on the LIM to ensure its test capability.PDF file you can download here. Carefully study the code to determine exactly what special grounding provisions must be provided in each project.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 22.00 1473 7. 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.3.00 330 12. Locate a power and ground module at the head of the table so the anesthetist can easily connect equipment. It must state that only non-flammable anesthetics can be used in the room. Although the shield makes the electrical design of the coil more difficult, these two features make it desirable: 1. NFPA No. Line Isolation monitor testing and replacement services Operation at either 50 or 60 Hz. 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. All of these panels are available in both one-phase and three-phase configurations with 5 to 25 kVA ratings.50 343 Ground Receptacle 30 A Twist to Lock Red or Ivory Duplex Receptacle 20 A Hospital Grade 14 Gauge Stainless Steel 8." Anesthetizing Location Classifications As with NFPA No. 29-M1989. 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. Enhanced features and improved functionality make this the most flexible LIM on the market today. However, the resistance through the power cord ground conductor is significantly lower, providing protection for the patient.2. Conduct this test at any of the receptacles; be sure all the secondary breakers are in the "on" position. If it does exceed 2 V, inspect the ground for proper connection and properly sized wire. (In this example, system capacitance has been neglected as its impedance value is many times that of the neutral-ground bonding. Primary Circuit Breaker Left Side Right Side Courtesy of Steven Engineering, Inc. Kitchen Plumbing as a Ground Receptacle White Wire Black Wire Fixture Courtesy of Steven Engineering, Inc. The governing body of the hospital determines whether a location is to be considered "wet. No branch circuit should be longer than 150 ft. Suggested boxes are gangable outlet boxes." Section 6.?? Document what corrective action that needs to be completed to meet that standard. Later, the hospital receives a letter containing the test results. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40.00 406 16. The 5 in.-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. M5IAI and M5IAI50 Some physicians prefer to monitor the hazard current of the isolated system as devices are energized during surgery. In these areas, patients are subjected to invasive procedures and connected to lineoperated, electro-medical devices. See page 66. 2 Line Isolation monitor testing and replacement services Inspection and Testing patient touching the secondary wiring system). It is generally accepted that any time the normal body resistance of a patient is bypassed, the body becomes electrically susceptible. This large panel condenses many of the electrical accessories normally found in an operating room into one unit. 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.-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.3. System Size The system must stay as small as possible to limit leakage currents. 56, the basis for our current standards. 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. When the black wire touches the kitchen plumbing, there is a violent arc, much as if both conductors had touched each other.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. Every foot of wire contributes leakage, so we must keep the total footage to a minimum. Use minimum fills for conduits; this results in a better random lay of the conductors within the conduit, which further reduces the capacitive coupling. The National Electrical Code (NEC) of 1959 firmly established the need for ungrounded isolated distribution systems in areas where combustible gases are used. Such patients cannot avoid or disconnect themselves from an electrical hazard that would be relatively harmless to a normal person. Transformer Catalog Numbers 120 V Winding Rating (in kVA) Primary Voltage Secondary Voltages Catalog Number 5. The snap-in breaker is recommended because of its ability to grab the bus and clamp down under heaver loads.-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. Section 3. Both the MCT4RC and the MCTCT control units include a 15-foot wiring harness for connection to the clock/timer. With this selection of capabilities, the Iso-Gard LIM can meet the requirement of any application. To perform the test, inject 20 A between the ground bus in the isolation panel and the grounded points on receptacles and ground jacks. However, careful planning on the part of the consulting engineer, architect, contractor, and hospital personnel can reduce electrical hazards to nearly zero. These cords may lie in traffic areas where people step on them and roll equipment over them. The line isolation monitor is a critical component of an isolated power system. This is the only way to avoid purchasing unnecessary equipment. 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. The acceptable protection is the same as that defined for NFPA No.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.00 305 9.00 609 58. 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. 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. In critical care areas, where one transformer serves one bed, a 3 kVA transformer is recommended. 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., 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.00 508 20.) 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). The unit is compatible with all hospital isolation transformers and hospital isolation systems. It also gives the support team easy access to the controls.The consulting engineer can use this table to estimate the system hazard current at the design stages. Section 6. BiomedRx can train your current maintenance staff on any manufacturer's isolated power systems. 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. Unfortunately, a perfect system is impossible to attain.00 283 4.00 762 6. Additional circuits should be added with caution, as this will increase the leakage.-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. Line Isolation monitor testing and replacement services Both analog and digital hazard current indication. Long C-25 Clip with Slip-On Insulator Furnished P753N 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 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. 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.00 737 16.8. Push button control can be substituted for the switch in the receptacle module. Verification that all applicable sections of code requirements are being met.00 813 14.0 kVA and below, and 35 dB for units 7. Installation of circuit breakers rated higher than 60A voids the UL Listing. Perform periodic testing, according to this schedule: Test the LIM push-to-test button monthly. 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. THE ISOLATED POWER SYSTEM (IPS) Diagram 3 shows the schematic representation of an Isolated Power System. In an isolated system, neither of the 120 volts AC power wires available at the power outlets are connected to earth ground.00 127 1. 99.-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 7.2. The third opening is shaped to receive a pin (U slot) rather than a blade-shaped prong. This device was designed with the user in mind. 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. Whether snap-in or bolt-on breakers are used, it is extremely important that the dead front for the panel be properly installed. 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. 99. The cords are designed to withstand hard usage.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) . That is that they are grounded.-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. Line Isolation monitor testing and replacement services Stainless steel trim with lockable door to restrict unauthorized access to circuit breakers and line isolation monitors. 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. Periodic testing for isolated power systems is required in NFPA-99. Pressing the silencing switch disconnects the audible signal. Since the LIM is responding to total hazard current (THC), any energized remote will respond to an alarm. Line Isolation monitor testing and replacement services Each system is capable of accepting up to 16 branch circuit breakers. Order the appropriate number of circuit breakers Line Isolation monitor testing and replacement services Inspection and Testing QO220. You should observe a slight meter deflection, indicating the monitor hazard current plus the hazard current for the isolation panel. Electrostatic Shield Main Circuit Breaker Customer Load Connections Pri. This enables the engineer to perform maintenance more conveniently and efficiently. It is also important to specify wire with a dielectric constant of 3. 2 For bolt-on, secondary circuit breakers, add a "B" to the end of the catalog number. This bulletin is not intended as a "do it yourself" manual for installation of hospital isolated systems.2.-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. If any circuit shows an unusually high hazard current compared to other circuits, investigate it immediately. Our testing service includes: Testing of ungrounded isolated power systems and wiring. Testing Programs. Medical Equipment Maintenance The increased use of biomedical instruments presents another maintenance responsibility.00 305 4. Section 6.00 1067 3 kVA, 3-Phase Flush Panel 3 kVA, 3-Phase Surface Panel (4) . A count may be interrupted, resumed and reset at the remote control MK1550. It is selectable for either 5mA or 2mA.00 127 5.-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.1. One half of the panel can be used to supply critical system power, while the other half supplies normal system power.00 914 Left Side Right Side 22. NOTE: Install indicator alarms above the five foot level in each operating room or anesthetizing location. 3H5S11CDDI to 3H5S11DDDI. 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. Ground Detector.50 89 15. On a 120 V system, this corresponds to 600 ?A when measured through a milliammeter connected between line and ground. Courtesy of Steven Engineering, Inc. 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. A push button station located in the panel controls the interlocking system. 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.1.-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. 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. Other factors contributing to electrical susceptibility are patients with hypokalemia, acidosis, elevated catecholamine levels, hypoxemia, and the presence of digitalis.00 305 5.3.50 38 52.00 889 24.0 or 5. The NEC recognizes that hospital patients are more susceptible to electrical shock than are normally healthy individuals.-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. 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. 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. A total of 90 EDS devices may be interconnected via RS-485. The situation has worsened over the years because of the increasing presence of electrical diagnostic and treatment equipment. 99 Isolated Power System Inspection and Testing Health Care Facilities.00 305 4.00 102 Safe/Silence Hazard Stainless Steel Trim IA8CI Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The only indicator alarm operating is the energized circuit. 70 Article 517-3 specifies the legal minimum requirements in most states. 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. Contact Schneider Electric Medical Products for more information. 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. Although extension cords offer flexibility, they are often abused. By interconnecting all metal surfaces within the patient area, potential differences between the metal surfaces can be kept to a minimum. The Timer may be activated from the remote control MK1550 or an external contact (code blue or other monitoring output). 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.0 1067 12.6.-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. There are many other requirements for the flammable anesthetizing locations; these requirements are discussed in NFPA No. The combination of these elements presents a challenge to increase electrical safety. The 6 in.) 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. Courtesy of Steven Engineering, Inc. An isolated system can be unintentionally grounded. Attendant contacting bed to pacemaker catheter terminals EKG Monitor Possible Broken Ground Path of Leakage Current Courtesy of Steven Engineering, Inc.00 102 13. 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. Enhanced features and improved functionality make this the most flexible LIM on the market today. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs.81 97 3. 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. 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.00 127 5. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. This grounding conductor also provides a path for leakage current which could be conducted to an electrical appliance case. Transformer Construction Receptacle Black Wire Core Steel Secondary Winding Primary Winding Isolating Transformer White Wire Courtesy of Steven Engineering, Inc.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. Section 6.5 7. Codes require an indicator alarm in each operating room. The panel does not have lock-out features, but does have the ability to turn receptacles on and off where needed. The positioning of the electrical equipment in the operating room has a direct relationship to this information. 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. Manufacturers BiomedRx provides an outsourced solution for medical equipment manufacturers seeking to expand their sales and service territories. Occasionally, difficulty occurs in circuits feeding portable equipment since these conductors are somewhat larger. 99 specifies the "Grounding System. Section 6.25 83 3. 4. Answers There are no perfect electrical systems or infallible equipment to eliminate hospital electrical accidents.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels. This requires a second fault or electric failure to be present in the system before a true hazardous condition exists.4. These circuits interlock so that only the required circuits can be energized at a given time. Obviously, conduits must be dry or the leakage characteristics designed into the system will suffer. Consider this scenario: The person using the drill touches his or her opposite hand on the plumbing fixture for support. The lower the AWG, the larger the wire. 3. 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. QO210 through QO260.0 305 (4) . For the QOB� (bolt-on) circuit breaker, Schneider Electric recommends checking the tightness of the bolted bus connection at least once each year. Older LIMs ISO-GARD LIM from SQUARE D � 0 5. Switching between the isolated conductors and ground causes interference on the isolated system. 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. The level of current would be high enough to be deadly. The MCTS95135 is a stainless steel trim panel with holes and studs for mounting the digital clock. Consequently, patients must be protected through use of special procedures. This unit has unique power backup systems that requires no battery so there is no need for battery monitoring and replacement. No wire pulling compound with ground conductor." This, in effect, grounds the secondary through the primary. Ventricular fibrillation can occur from exposure to this leakage current. Section 6.0V 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. A wet location requires special protection against electrical shock. 2. Periodic testing and logging for future test required by NFPA 99 will be explained to maintenance staff.76 908 15 and 25 kVA, 3-Phase Flush Panel 60. Several points should be considered: 1.0 mA under normal line voltage conditions. In the unshielded transformer in the figure above, this failure occurred at "X. Line Isolation monitor testing and replacement services Routinely verify that conductive surfaces are grounded in all patient areas. It could be from 1 V to approximately 240 V in a 120�120 V transformer. 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. Duplex hospital isolation panels are ideally suited for large operating rooms where more than 14 circuits are required. In this example we will examine why our 1000 Ohm person is greatly protected from potentially lethal shock hazards. Explosive anesthesia is now virtually non-existent in the United States. This ground plane is established by the use of a properly connected ground system. 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. The threshold of perception for an average adult is 1 milliampere (mA). The first unit is not actually a LIM, but rather the original "ground detector," which is essentially a balanced bridge device.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.12 79 2. 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. 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. Secondary Wiring Primary wiring in an operating room (from the main alternating current power supply) is normally grounded.-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. For example, during cardiac catheterization, small amounts of current could cause ventricular fibrillation.-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. To conduct these tests, disconnect all secondary equipment from the secondary circuits.68 93 4. The following figure illustrates the size of power and ground conductors and their correct routing in a typical operating room. Back boxes for the 120 Series are ordered separately. 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. This causes the primary circuit breaker to open, removing the unit from service. 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. Conduct these tests before patient occupation. 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. 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.00 72..-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.00 813 20. The most generally acceptable method is a PLC controlled system using the switch in the receptacle module. The completed system is retested to ensure proper operation. Hazard Current Leakage Contributed by Wiring Materials Used Result TW wire, metal conduit. 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. MIN. 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. It has a high impedance capacitive/resistive return path. Hospitals should establish routine programs to test and maintain such equipment as required in NFPA-99. This unit has three elapsed-time indicators and one clock integrated into a single, compact enclosure. When manufacturers design and build complete systems, many factors are considered: proper and attractive packaging, convenient design, and ease of maintenance. This unit was the first of the low leakage LIMs. 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. Under continuous full load and normal hospital ambient conditions, the front trim panel's total temperature will be no greater than 50 �C. 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. Because of the size of hospital electrical systems, it is difficult to establish and follow a maintenance program which includes the entire hospital.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) . 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. Mounting space is provided within each Square D brand isolated power panel for easy installation. Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Field wiring simply involves the connection of the primary feeders and secondary circuits to clearly marked terminals. 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.00 813 Shaded areas denote possible conduit entrance 42. 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.3.00 305 Silence Hazard Safe Remote Indicator Dual Dimensions: Inches mm 8CIIAI Dimensions 12 Gauge Stainless Front Cover Remote Indicator 10.6.0 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. However, you will have just made the granddaddy of all leakage scenarios, and the Line Isolation monitor testing and replacement services should alarm strongly. The design also helps keep cleaning solutions out of the panel when the walls are scrubbed down by housekeeping staff. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. Line Isolation monitor testing and replacement services Iso-Gard Series D microprocessor-controlled line isolation monitor (LIM) manufactured by Schneider Electric. Values given are approximate; variations in humidity, conduit moisture content, conduit fill, and wire insulation will give different results. The isolating transformer, circuit breakers, LIM, and control equipment are all mounted in an attractive flush-mounted enclosure. 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.00 1245 51. Obtain copies of all standards referenced in this bulletin from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. V. 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. This chapter briefly covers the sections of codes and standards that apply to hospital isolated ungrounded distribution systems. Leakage Current. Leave the secondary circuit breakers in the off position.3.44 113 3. 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. 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. 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. If the alarm is going off, the last piece of equipment plugged in is usually suspect and should be unplugged.0 10. The technician provides orientation to the system, and its maintenance and testing.00 610 22.00 813 74.562 Dia.3.00 102 4. 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. Parallel leakage return paths will also bypass a portion of the leakage current from the patient. If the white wire touches the plumbing, nothing happens. 99, grounding requirements still remain more demanding than those shown in Article 250 for other occupancies. No current flows if either secondary conductor of the transformer touches the plumbing (ground). Line Isolation monitor testing and replacement services Hazard current alarm levels of 2.00 203 32. Courtesy of Steven Engineering, Inc. In placing resistance, the appliance limits the amount of current that can flow.00 406 5.3. H x 8 in.3 of NFPA99 2012 addresses Performance Criteria and Testing for Isolated Power Systems. NOTE: Hospital operating rooms have been classified as Critical Care Areas since the 1993 issue of the NEC. Routine housekeeping procedures and incidental spillage of liquids do not define a wet location.00 127 7.-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. UL 1022 Line isolation monitors are measured against this UL Standard. 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. Order the appropriate number of circuit breakers Line Isolation monitor testing and replacement services Inspection and Testing QO220. It comes complete with SILENCE, HAZARD, and SAFE indicators, a PUSH-TO-TEST button, and an LED light bar for metering. A complete inspection of all devices for polarity. 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.12 79 3.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied.0 305 1. 29-M1989.75 95 Note: 4-gang back box not supplied. The yellow indicator illuminates, reminding personnel that the audible signal is disconnected. 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.00 813 30. The MK2430/MK800 displays information regarding each individual device, system, or room and can define custom labels based on each individual application. The trim has no louvers or grilles for air circulation, which contributes to safe and easy cleaning. 42. The use of a central system, containing individual distribution systems for several operating rooms or CCUs, is not practical except in rare circumstances. Close only one circuit breaker at a time; otherwise, the reading cannot be attributed to a specific circuit. NFPA-99 requires yearly testing of Isolated Power Panels. Line Isolation monitor testing and replacement servicess Isolated Power provides protection for both the patient and staff against electrical shock. 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. Obviously, the white conductor and the kitchen plumbing have something in common.00 305 72. No branch circuit should be longer than 150 ft. Check the associated alarms and silence functions. 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. The level of electrical safety has now been reduced. The switch at the receptacle module energizes the appropriate contactor when activated, while locking out the remaining contactors.3. 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. 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.00 762 6. With nothing connected to the system except the LIM, 1000 ?A could flow from either line of the isolated system to ground.00 102 3. 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.-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. A risk assessment by the health care governing body can in fact deem an operating room not to be a wet procedure location. 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. The THC reading provides advanced warning of isses that are present in the system. 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. The 20 A ground test can also verify that all metal within the room is properly grounded.edu/simulations/ores. The ZT1590 has a dual-row, 7-segment display with large, red LED characters, easily read in high ambient light. ISOLATED SYSTEM & BROKEN GROUND & HOT WIRE TO CASE In this scenario, the circuit breaker will not protect you. On the other hand, Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG only represents 0. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. 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. The first dynamic ground detectors, now called line isolation monitors, were developed in Canada. NFPA appointed a committee to revise the 1944 standards. Take all possible safeguards to guarantee the transformer's isolating properties. Here is a video documentation of a previous isolated power system inspection performed Fountain Valley Hospital, California. This is the most controversial section. Record the hazard current reading for the LIM with only the primary circuit breaker closed. ORICA The ORICA model is complete with green, yellow, and red indicating lights. 4. Circuit Breaker Protection All Schneider Electric hospital isolated systems include a primary circuit breaker and 2-pole secondary circuit breakers. Square D recommends all consulting engineers who design hospitals have the hardcover "handbook" version of this document available. Line Isolation monitor testing and replacement services Other-than-hazardous locations, allowing the use of grounded power systems. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40.50 343 Ground Receptacle 30A Twist to Lock Power Lock Receptacle 20A Hospital Use Only 14 Gauge Stainless Steel 4.-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 Iso-Gard LIM can also be purchased separately and installed as a replacement for any outdated line isolation monitor. Includes the MCTBP battery pack, see page 66.2 � 106 � 120 Line Isolation monitor testing and replacement services Inspection and Testing 119.0 mA of hazard current. When this happens, a low resistance path would electrically connect one turn of the primary winding with one turn of the secondary winding.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.00 127 5.-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. The dispersal pad from modern (but not all ancient) electrosurgery / electrocautery devices is NOT grounded, precisely to avoid this and other risks. A remote indicator duplicates audible and visual alarm indications on the LIM. Here is a video documentation of a previous isolated power system inspection performed at Beach District Surgery Center, in California. The visual and alarms shall be activated.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. Anesthetizing Location Classifications The first type of location is one which is flammable because explosive anesthesia is used. 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. An optional surface mount backbox is available for remodeling applications. 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.-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. The hope is that this will occur prior to the onset of ventricular fibrillation in the victim or other damage. Isolated Power also protects the patient and staff against electrical shock due to defective patient-care-related electrical appliances. Since they are digital, they instantly reset, which eliminates annoying time delays for mechanical resets. 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. Contact Schneider Electric Medical Products for more information. Standard straight blade receptacles, NEMA Configuration Line Isolation monitor testing and replacement services Inspection and Testing 5-20R, are now acceptable in operating rooms.00 305 8.35 85 3. Courtesy of Steven Engineering, Inc. 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. The cord is an extra flexible Line Isolation monitor testing and replacement services Inspection and Testing 10 copper conductor with a green neoprene jacket. A 2 mA meter is available for either style by changing the "M5" in the catalog number to "MM. Article 517, National Electrical Code Isolated Power System Inspection and Testing NFPA No. You can think of it as a "leakage" current, even though it is a virtual leakage current; it may or may not exist. However, these codes and standards are continually changing and are also subject to local changes and interpretations. Member organizations benefit from bulk purchasing discounts, technical training, and earning opportunities in support of our asset management and manufacturer support services. It contributes only 50 ?A of leakage to the system, about one percent of the system's usable capacity. 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.5 38 27.00 25 4. 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. All remote indicators include a green "SAFE" LED, a red "HAZARD" LED, and a "MUTE" button with an integral amber LED. Isolating the operating room system from normal building service is important. Furthermore, no sparking occurs when either conductor touches the plumbing; the fuse or circuit breaker maintains the connection. 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. The batteries are rechargeable, which eliminates the need to replace dead batteries.2.50 (4) .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. Remote indicator alarm stations must be located at the receptacle location. No branch circuit should be longer than 150 ft. Mtg. 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. Only a LIM connected to the secondary would indicate the problem. These locations must meet class I division requirements and must have isolated power systems. This would create the potential for current to flow from the opposite conductor to ground, as it would in any grounded electrical distribution system.1V (with 50 microamp leakage) I. Line Isolation monitor testing and replacement services Surface mount backbox. Discuss the methods with the electrical consultant, hospital administration, and hospital radiology staff.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. Conductive flooring is not required for rooms that are designed as nonflammable anesthetizing areas. D Courtesy of Steven Engineering, Inc. Whether an electrostatic shield is necessary in a transformer used in a hospital isolation system has been widely discussed. Electrical current comes to the receptacle via two insulated conductors. Our representatives provide sales and service support on behalf of medical device manufacturers. Multiple LIM2010 devices may also be controlled by a single, intellgent remote station. 53007BB is the standard Square D brand back box (4 in. The line isolation monitor continuously monitors the isolated power system's impedance from all conductors to ground. 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 . The services of a factory technician are available from Schneider Electric. The value of current divided into the system voltage determines the system impedance. Then close one secondary circuit breaker at a time, recording the hazard current reading for that circuit only. the "isolated" system is no longer isolated, but rather is grounded, thus only one additional fault could result in a shock). BMETs (Biomedical Equipment Maintenance Technicians) BMETs benefit from association with BiomedRx in many ways. C1 in parallel with 1000 Ohms Line Isolation monitor testing and replacement services Inspection and Testing 1.00 127 5.3.) for mounting the stainless steel trim. You can learn more about hospital isolated power distribution systems on a .00 508 8." Section 6. 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 . Each hospital should maintain the necessary testing equipment to conduct these testing procedures. 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. 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. The LIM does not interrupt electrical service.00 203 24. Test the LIM to ensure the proper alarm trip point. This type of electrical system is commonly called a "grounded electrical distribution system.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.2." Section 6. The ground in this case is the kitchen plumbing fixture. Determine the line-to-ground impedance between each of the power conductors and ground. The only time a central system makes sense is when this location coincides with the closest placement of individual panels to each room. In three-phase systems, the third conductor shall be color-coded yellow. This also gives the control of the receptacle to the room. 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. Because of this, electrical design engineers should still plan for special grounding requirements in these areas. No DIP switch configuration is required. When specifying a surgical facility panel, consider which location is best for all concerned personnel. QO220. 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.00 102 13. The cord's overall diameter is 5/16 in.00 51 8.0 127 29. 3. 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. Since the amount of wire is often proportional to the number of circuit breakers, keep the number of circuit breakers to a minimum. 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.5.1. Control Panel (MCT4RC) Designed to operate with the MCT14B surgical chronometer.0 1067 12. The type of controls applied depends on the need. They are compact, solid state, and easily readable from 30 ft away. 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.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. 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.89 above.25 83 4. 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 7.0 10. Since quiet operation is important in hospital applications, Schneider Electric followed rigid design criteria to provide a virtually inaudible transformer core and coil unit.00 330 12. Normally the metallic case of appliances is connected to earth ground via the ground wire." Section 6.50 38 15 3. Line Isolation monitor testing and replacement services The appropriate medical engineering services must be obtained. COUNT HOLD RESET Note: 2-gang back box not supplied. One of them is usually black, the other white. 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. The staff uses the book to record maintenance and periodic test data. Courtesy of Steven Engineering, Inc. In addition, we provide video documentation of all service visits. III. Schneider Electric is often asked to specify manufacturers and wire catalog numbers for the low leakage conductor.0 305 (4) .0 mA. Transformers All transformers for the dual output voltage isolation panels are single-phase only. Courtesy of Steven Engineering, Inc.ufl.0 5.-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.00 305 6. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. Holes 1.00 254 5. Use of the cords can also allow higher than desired current leakage, causing the IPS to go into alarm. When installing a new curtain rod at the window over the kitchen sink, one would probably use a small electric drill. Conductive flooring is still required by code in all flammable and mixed facilities.-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. The table below shows the recommended breaker-to-load schedule. This panel is ideally suited as a power supply to power/ground modules and X-ray indicator/receptacle modules, also manufactured by Schneider Electric. The MCT4RC remote control panel can be mounted in a location selected for accessibility. The above testing procedures are based on those required for isolated power systems in NFPA-99.3. Even if a person contacts two pieces of metal, both at 10 V, a current path will not develop. 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. Line Isolation monitor testing and replacement services The hospital must develop procedures, specifications, and additional program components to meet its needs. While these requirements are considerably reduced in the NEC and NFPA No.2.25 83 4.) 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 1.0 10. 2. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs. 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. They are both "floating". It virtually eliminates all of the undesirable features in the early dynamic ground detectors and line isolation monitors.00 305 6.00 203 5. Voltage across the person would be: 1000 � 120 Line Isolation monitor testing and replacement services Inspection and Testing 0. 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. 99, anesthetizing locations are classified as: Line Isolation monitor testing and replacement services Hazardous locations which use flammable anesthetics. In a balanced system as shown, we can expect to measure 60 Volts from each line to ground.5 or less, as recommended by the NEC and NFPA No.2 of NFPA99 2012 addresses Record Keeping. 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. Your analog line isolation monitor requires monthly testing.00 1880 32.50 343 3. The following figure illustrates this example. 14 ga. 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. Because the panels provide power to life support equipment, a lockable door is included on all units. 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. QO210 through QO260. The unit is completely factory wired; only field power connections and ground connections are necessary." Ungrounded System To convert available power from a receptacle into an ungrounded service is possible. This is especially important when ordering permanently installed equipment, such as X-ray apparatus. 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. 99 History Published by the NFPA, this code is included as a reference in the NEC Article 517.43 392 3. 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. The LIM also performs an automatic ground fault test on any cord-connected appliance that is plugged into one of the Isolated Power receptacles. 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. Unshielded Transformer Shielded Transformer Courtesy of Steven Engineering, Inc. 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. The conclusion is current does not flow from either conductor of the isolated system to ground. 99 describes the line isolation monitor (ground detector) required to monitor the isolated system. Do not accept any hospital isolation equipment unless it is listed and labeled as a complete system under this standard. 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. 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. It is believed that approximately 1,000 ? of resistance lies between the patient's heart and external body parts. More important, no room air circulates through the transformer compartment, removing the danger of bacteria growth in the warm compartment.0 686 7. Ground detectors may still be used if they were installed before 1971. Line Isolation monitor testing and replacement services All branch circuits are located in one panel. When considering system size, we must include all wiring between the circuit breakers in the isolated panel and their receptacles.00 1880 1829 20. The receptacle module contains a switch that sends a signal to the panel that power is required at the receptacle. 99 and the NEC. The Iso-Gard LIM also self tests and self calibrates once every 65 minutes eliminating the need to manually test the unit periodically. Duplex or single receptacles are available on request. 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. This can be important when maintenance electricians are searching for a tripped circuit breaker in an emergency.00 305 Safe/Silence Hazard Stainless Steel Trim IA12CI Dual Dimensions: Inches mm 13. Booms are typically wired with a cord that has PVC insulation and a PVC jacket.562 dia. Appropriate actions may be taken while the system remains online. Schneider Electric supplies a variety of interlocking type panels and schemes; do not hesitate to ask us for the special system your hospital requires. Long Line Isolation monitor testing and replacement services Inspection and Testing 10 Super Flex RC 600V Cable 15 Ft. As with all testing, the values of leakage found at the time of test were just that. The LIM2010 line isolation monitor (LIM) measures the total hazard current (THC) in an isolated power system. We also offer many employment opportunities worldwide. The key to keeping the drill safe is in the ground connection from the drill enclosure to the ground at the receptacle. In more technical terms, no hazardous potential to ground exists from either conductor of an isolated electrical system.2 mA Allowed for System Hazard Current 4.00 102 12.0 1016 42. 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. Impedance includes both resistive and capacative readings.-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. 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.) 15 and 25 kVA, 3-Phase Surface Panel 25. Because of the PLC, multiple locations can be served at one time.3.3. We also provide applications assistance and in-service education to your clinical and biomedical engineering staff. Humans, however, generally get harmed by being in physical contact with the ground (e." Although these isolated systems are very important to hospital operations, many hospital staff lack even a basic understanding of how isolating systems work. We have built an enviable reputation for reliability, low sound levels, and minimum inherent leakage.437 Diameter Mounting Holes 11 21. Dimensions Finished Floor 10.-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. Technical personnel may be notified immediately of an alarm condition with remote communication capabilities. It is the purpose of this document to explain the other advantages that Isolated Power Systems offer.00 1016 15.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied. 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 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). The different compounds used in the manufacturing of the insulation have changed or are subject to change, and the 3.00 813 12.00 357 24. Doctors will commonly require simultaneous timing of surgical procedures; the Square D brand surgical chronometer fills this need. 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. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40. 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.8.3. 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.00 305 16. 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. Mtg.00 179 40. Our representatives are professionals in the installation, repair, calibration and preventative maintenance of all modalities of biomedical and medical imaging equipment.00 330 12. Poor communication causes poor planning, which will be very costly and time-consuming if the system must be modified after it is installed. 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.5 7.-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. To perform this test, place a value of resistance between one line and ground to act as the fault impedance. The magnitude of this leakage current depends on the characteristics of the appliance and its insulation.0 5. In an unshielded transformer, a potentially hazardous condition exists if the insulation between the primary and secondary fails for any reason.43 392 3. Reference to these facts may be found in the Standard For Health Care Facilities NFPA 99 and National Electrical Code NFPA 70. Designs for 6 and 8 in. For example, change 15H5S22DDI to 15H5S22DNI.00 330 4. The displays can also be remotely controlled by the MCTCT remote control panel. Your analog line isolation monitor requires monthly testing.00 1575 Shaded area denotes conduit entrance 34.00 610 8.00 102 12. Codes and standards state that an alarm must sound and display (it must be audible and visible).0 178 14 Typically 5. This large panel condenses many of the electrical accessories normally found in an operating room into one unit. The following simple analogy should help the layman understand isolated systems.2. Person 120mA 100 microamp (with 50 microamp initial leakage) (5. The size of the isolation transformer should be limited to 10 kVA or less. Countertop areas may be served with grounded power when the power used is restricted to this area.00 203 9.00 102 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. Optionally, it can also be used to silence all audible alarms in the system.2.5 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. 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. Please contact your Schneider Electric representative for details. In extreme cases, it becomes impossible to use equipment such as an EEG without disconnecting the LIM. Some OR teams prefer to place the control panel within reach of the anesthetist. 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. This lack of information led to such errors as incorrect voltage for portable X-ray machines, insufficient receptacles, and insufficient capacity in isolating systems.-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. However, it can be located in a more convenient location. Disabling the alarm -- unless the surgery is emergent -- is not a prudent response. For more information, contact your local Schneider Electric representative. The MCT4RC control panel comes self-contained in a flush mounting back box with stainless steel trim.5, or 10 kVA.00 178 40. By applying the proper kVA loading, a panel can now provide power to multiple rooms and maintain safe operating conditions. C.5 mA 1.2. Therefore, the transformer can easily provide power for loads up to 150Line Isolation monitor testing and replacement services Inspection and Testing of its rating. 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. Trim Plate (MCTS95135) and Back Box (53007BB) These accessories, when ordered with the MCT12B digital clock, allow the timepiece to be wall-mounted.001 ohms/foot. 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. The alarms should operate in the safe condition and in the alarm condition. The technical complexities of today's hospitals require all involved parties to have a thorough understanding of the hospital's objectives. The conclusion to be drawn is the isolating transformer provides the same usable electrical energy as the grounded power circuit. It is the document used by most inspectors.00 203 4. See Schneider Electric brochure No. 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"). Hopefully, this section will help them fill this communication gap.2.5 7. W x 4 in. The size of the back box will depend on the outlet options for the overall device.0 1067 12.2. This LIM represents the most recent generation of line isolation monitors. Because the mere presence of a broken ground wire does not cause current to flow through a human, the GFCI will not alarm. NFPA 99 10." This subject is also discussed in detail in "grounding" on page 16 of this handbook.00 203 42. NFPA No.00 127 3. BENDER Isolated Power Panels provide isolated power to electrical systems in operating rooms and other critical care areas.3. 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. 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. Both balanced - as many occur from using equipment with balanced RF filters - and unbalanced resistive and impedance faults are detected by the LIM. 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. An alarm goes off if an unacceptably amount of current to the ground is possible (i. The alarm condition does not mean there is imminent danger to the patient or anyone else. A thorough study of applicable codes and standards is required to effectively design a project.00 762 12. The available grounded electrical power energizes a coil in the isolating transformer; this coil is called the primary winding. 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. 56. Line Isolation monitor testing and replacement services Use bedrails made of plastic or covered in insulating material.0 5. Continuity of Power 3.-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. We adhere to the highest standard of technical service in the medical device industry. 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. 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. Both sides are independently configurable. 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.0 1016 (4) . 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.2 � 106 C Line Isolation monitor testing and replacement services Inspection and Testing 2. The isolating system covered in this manual is really an "isolated ungrounded electrical distribution system.88 581 Back Front Maximum Above Floor Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.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. Although this unit meets current codes and standards, it has two undesirable features: 1.00 102 Clock Display Label Holders (5) Timer Displays (3) 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 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.�c 2 � � 60 � 1. A 1 A Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. 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. Even if the ground is intact, not enough current flows to disengage the circuit breaker or blow the fuse. 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. No branch circuit should be longer than 150 ft. Many people feel they can safely touch either one of these conductors, but this oversimplification could result in a dangerous shock. 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. 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. In the same year, the NEC incorporated the NFPA standards into the code. Upgrade to a digital MARK V LIM. The entire installation of the isolated equipment is inspected for conformance with applicable codes to ensure no code is violated. A divider in the unit's backbox separates the systems from top to bottom and front to back.2 of NFPA99 2012 addresses Line Isolation monitor testing and replacement servicess Section 6. All of this information leads us to the conclusion that the patient environment is a prime target for electrical accidents.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. Isolated Power System Inspection and Testing Power Ground Module Courtesy of Steven Engineering, Inc.2. 2. Devices with broken or damaged ground wires should be taken out of service and repaired.2. Lay out circuit feeders for minimum length, as in the case of operating room 120 V circuits. 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. If improper conductor insulation is chosen, the result is the same as if the capacitive leakage is raised. Each hospital must choose the best option for its purposes. Many hospitals feel it necessary to monitor each operating room at a central location. This reduces the integrity of the isolated system by partially grounding it. The 7. Courtesy of Steven Engineering, Inc. If the impedance is less than that required by NFPA No. If the other terminal of the light bulb touches the kitchen plumbing, nothing happens. Volt. 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. above finished floor. Devices with broken or damaged ground wires should be taken out of service and repaired. Line Isolation monitor testing and replacement services Panel-mounted indicator alarm and microammeter for operating room applications.2. This 120 mA could prove extremely dangerous for our 1000 Ohm person.00 178 4. For a 120 V system, this compares to 600 ?A. Interlocking Methods There have been several different methods of controlling the interlocking system for equipment receptacles. The following figure illustrates these hazards. Limits are established by codes and standards, specifically the NEC. Only the accessories are optional. This note referred to the recommendation found in the NEC (517-160) concerning the 3. This causes a higher than desired leakage and can cause the total resistance to be below what is required by NFPA-99.00 1118 8. 3 ?A per ft of wire XLP wire, metal conduit. Also available are hospital grade ground jacks to facilitate implementation of an equal-potential environment. RA1PM The RA1 is the newest addition to the remote alarm indicators series. 99. However, the amount of current that can flow must always be less than the current rating of the fuse or circuit breaker.00 406 Safe/Silence Hazard Stainless Steel Trim IA16CI Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.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. Your analog line isolation monitor requires monthly testing.00 330 4.1 of NFPA99 2012 states "Wet procedure locations shall be provided with special protection against electric shock.0 178 14 Typically 5. Since the patient provides a grounding path via the attendant and pacemaker, a current divider will result.5 dielectric strength. Ten secondary circuit breakers are recommended for the panel in this example. This is usually restricted to the location of the overhead operating room light. The newer and more popular control scheme is the PLC controlled panel.-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. However, the other wire, supposed to be "black" in color and known as the "Hot" wire -- different story. 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.00 635 31. Straight-blade single, straight-blade duplex, and twist-to-lock receptacles can be provided in a wide array of combinations.00 635 29. Today, these loads vary from 20 to 60 A and multiple pieces of equipment are being used. It consolidates 12 individual NFPA documents or standards into one document.00 1016 32. 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. It mounts in a 53008BB backbox (ordered separately). PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment. 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. 99.562 Dia. An optional rechargeable battery pack can be purchased to prevent loss of time information during a power interruption.1 of NFPA99 2012 states "A record shall be maintained of the tests required by this chapter and associated repairs or modification. A LIM test may also be preferred from these devices. Line Noise Reduction, the transformer acts as an electrical filter. However, as this current increases, it can become a hazard to the patient.3. The Iso-Gard LIM has the following capabilities: Line Isolation monitor testing and replacement services Operating voltages of 85 through 265 Vac. When a light bulb touches both wires, it illuminates. There is no maintenance recommendation for the QO circuit breaker.3. The proper accessories are often available at no extra cost, if they are specified when the order is placed. 3.5 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.3. 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. When the predicted leakage current to ground returns to an acceptable level, the unit automatically resets.50 (4) .00 1067 2. Correct the problem as soon as possible; but do not interrupt procedures being conducted when the alarm sounds. Each remote indicator is powered directly by the LIM2010 line isolation monitor, located at the isolated power panel. 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. 13. 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). These faults could develop through internal aborted components or poor power cord insulation." Section 6. For more than 4 circuits, contact Schneider Electric Medical Products. It is a common procedure to use a single isolated system to supply these circuits for more than one operating room. All materials conduct electricity to some degree. It may be the "last one plugged in", making it easier to find.00 178 22. Ground Cord Assemblies Schneider Electric offers various types of ground cord assemblies. 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.5 120 208 240 277 480 80A 45A 40A 35A 20A OR 29540V3 3 Vented trim. This would be contingent on interpretation of the mopping of the floor which occurs between cases as "drenching", as defined in Section 3. MCTCT Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Accessory Control Panels These control panels give hospitals the flexibility to mount digital time devices in a desired location. The use of articulating arms (booms) is commonplace and must be considered when they are installed in a procedure room using isolated power. Only the accessories are optional. These combined annunciator panel units meet this need." Section 3.-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. The Square D brand, type EDD line isolation monitor is typical of the second generation of LIMs. Equipment that connects directly to patients should have its patient leads checked for leakage current.63 118 12. BiomedRx testing of isolated power systems exceeds the requirements of NFPA 99 6.2 of NFPA99 2012 states "The system shall be permitted to be installed where it conforms to the performance requirements specified in 6.562" Dia. Installation of circuit breakers rated higher than 60A avoids UL Listing.00 254 64. The traffic pattern, along with the positioning of the surgeon and support team, should also be verified.e. This panel is operated from the receptacle module in the room. Insist that any line isolation monitor installed in the facility have a UL component recognition under this standard. Line Isolation monitor testing and replacement services Request that patient electrical devices such as toothbrushes and shavers be battery powered.06 2 6. 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. Consequently, the line isolation monitor (LIM) monitors only the wiring and its inherent leakage to that single receptacle. deep (minimum) outlet box. 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. 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. 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. No additional software is required. 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. Order circuit breaker catalog number QO220. Verify the LIM is operating. Dynamic Ground Detector. However, if that ground wire is broken, the case will become "hot" and the circuit breaker will not blow.50 241 13.1. However, its use is not restricted to that application; it can also be used in critical care areas. 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. 4.50 165 .50 89 15. 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.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels. 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. V. 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.0 mA. The highest risk is to patients undergoing surgery within the thoracic cavity. 8. Back boxes for the 120 Series are ordered separately.156" Diameter Mounting Holes Face of Mounting Panel Terminal Board Receptacle 6. Field Test and Inspection Because of the complexity of isolated power and the ground system, the manufacturer should field test the system before use. This device was designed with the user in mind.00 381 3. High Voltage To Breakers in Panel To Ground Bus 120 Vac Power In Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. When this predetermined limit is exceeded, the green light goes out, the red indicator illuminates, and an audible signal sounds. We are the first organization to offer online training for biomedical equipment maintenance technicians. The plug has a large rubber handle. The cost of a single ground jack, or even several ground jacks, in a room is quite low. This impedance must be greater than 200 kilohm (k?) for either line to ground.00 305 9.0 5. Line Isolation monitor testing and replacement services Totally enclosed, non-ventilated, flush enclosure with stainless steel trim. For detailed information on the Iso-Gard LIM, see page 62 of this bulletin, or request the Schneider Electric bulletin covering line isolation monitors. 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. Under some types of ground faults, 120 V equipment can be subjected to higher than anticipated line-to-ground voltages. 56A� Standard for the Use of Inhalation Anesthetics, received major revisions in 1970, 1971, 1973, and 1978.00 508 20. 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.-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. 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.00 279 13. This amount of current will produce a slight tingling feeling through the fingertips. These new hazards were first recognized in NFPA bulletin No. Nowhere else can one find these elements: lowered body resistance, more electrical equipment, and conductors such as blood, urine, saline, and water. 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 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. 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. 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. In other cases, the central system would result in longer runs from the panel to the receptacles and devices.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels.3.00 1067 20. 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.-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.00 102 12. The proper response of the line isolation monitor and its associated alarm device(s) is observed.3.g. For facilities with limited equipment, a contactor control panel can be designed to fit individual needs." RA1WM (Wall Mount) IA1C M5IAI50 M5IAI Courtesy of Steven Engineering, Inc. All portable equipment has the potential for leakage current. 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. Confirmation that the impedance to ground of both conductors of the isolated system exceeds 200,000 ohms when installed. After all tests have been successfully completed, a written certification will show that all systems comply with codes, good installation practices and specifications.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.1 of NFPA99 2012 addresses Maintenance and Testing of the Electrical System.00 864 12.00 406 Primary Breaker 1. Line Isolation monitor testing and replacement services All medical equipment must be defined and inventoried. The specifications should state that, if moisture accidentally enters the conduits, they must be swabbed and thoroughly dried before conductors are pulled. The MK series LIM remote indicator may also be built into the module for displaying the status of the connected LIM.2 of NFPA99 2012 Isolated Power System (Where Installed) states "A permanent record shall be kept of the results of each of the tests. The designation of all of the above-mentioned areas in the health care facility is the responsibility of the facility's governing body. This was not because of poor planning, but because the engineers did not receive the information needed to plan usable systems. This device continually monitors all potential parallel leakage paths to ground. 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). 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. Keep in mind no perfect insulators exist either. Iso-Gard LIM Courtesy of Steven Engineering, Inc.00 1016 32. It is safer to install a sufficient number of accessible receptacles than to use extension cords.-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. It is selectable for either 5mA or 2mA. BiomedRx is a home for the brightest and best minds in the biomedical engineering industry. 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.16 106 6. Volt. This location must be designed to comply with NEC Article 501. Back boxes for isolation panels and other modules can be shipped to the job site for "roughing-in" ahead of the interiors.562 dia.50 241 13. 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.7 mA 2.0 10.00 127 7. Imperfect Isolating In the previous examples, we assumed a perfect system.00 76 3. Patients may also be connected to electro-medical devices, such as heating pads, EKGs, drainage pumps, monitors, otoscopes, ophthalmoscopes, and IV lines. If no receptacle is selected, the section is field expandable to two branch circuit breakers by ordering Schneider Electric catalog no.50 419 13. Infants are more susceptible to electric shock because of their smaller mass, and thus lower body resistance. The section is field expandable to 16 branch circuit breakers by ordering additional circuit breakers, Schneider Electric catalog no. Calculate an external fault impedance once every six months.00 152 5. Remote Indication RAS Remote Annunciator Station RAS series remote annunciator stations utilize multiple MK series remote indicators, each connected to a line isolation monitor.24 82 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The architect can also specify the proper equipment, avoiding later difficulties.00 254 11.50 114 3.50 343 8. BENDER type HGC hospital grade ground cords are recommended for use with this configuration. 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. Thus the circuit breakers and the grounded cases of appliances provide one means of protecting users. It powers the "memory mode," which prevents loss of time information on the digital clocks during a power interruption.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. See the "Codes and Standards" page 7 of this manual for additional information. Remember that everything connected to the isolated system increases the total hazard index: LIM, transformer, circuit breakers, secondary wiring, and any peripheral equipment. 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. If an optional power ground module is used, two circuits should be used. 99 sets the limits of impedance to ground of the isolated system and the instructions for testing to determine compliance with the standards. If the drill is in good repair and the enclosure is properly grounded through the power plug, the procedure is safe. Procedures for electrical safety should include the following: Line Isolation monitor testing and replacement services Check all wall power receptacles and their polarities regularly. deep (minimum) outlet box, this remote has SAFE/SILENCE and HAZARD indicators. In this situation, one should unplug devices to find out which one may have the problem.-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. Additionally, the code states that the unloaded system, with the LIM disconnected, must have a minimum line-to-ground impedance of 200,000 ?.00 610 (4) . 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. If that leakage rises above a safe threshold, the Line Isolation monitor testing and replacement services will alarm. 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. The system provides for a remote indicator alarm at each circuit outlet.0 10.562 Diameter Mounting Holes 14 16. Line Isolation monitor testing and replacement services Each panel includes two Iso-Gard Series D microprocessor-controlled line isolation monitors. Routine housekeeping procedures and incidental spillage of liquids do not define a wet location. An externally applied current of 50 mA causes pain, possibly fainting, and exhaustion. 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. The low profile panel uses a common backbox for all voltages.5 13. In any case, the result would be the same.) The M5IAI is the original remote indicator with a meter. (2013): Electrical Power and Safety in the Operating Room.g. 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. holes 14 (2 Top, 2 Bottom for mounting) Shaded areas denote possible conduit entrance 3 kVA and 5 kVA Operating Room Panels 7. These units must be replaced immediately, as it is a violation of code to use them. 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. 76BM, published in 1971. Up to 12 separate current transformers may be connected to the device. For example, a patient who has impaired nerve sensitivity cannot detect heat. Line Isolation monitor testing and replacement services The impedance of the isolated system (impedance to ground of either conductor) is tested. The special procedures and equipment required become more complicated with the degree of electrical susceptibility of the patient. 99, investigate the system and correct the problem. 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. The table below shows the approximate expected hazard currents per foot of power conductor, using the various wiring schemes described in the preceding paragraphs.0 127 29. 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.00 1067 60.0 5. Follow the test procedures listed below: LIM Test 1. Ground Jacks In previous codes, provisions for grounding conductive non-electrical devices were dictated.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. The single enclosure places the receptacles at the point of usage and provides a lower resistance ground path between electrical appliances