Scope
The contractor shall furnish and install a complete isolated power system as indicated on the plans and specified herein.
Codes and Standards
The isolated power system shall be designed and installed in accordance with the latest edition of the following codes and standards:
- NFPA 99 "Health Care Facilities"
- NFPA 70 "National Electrical Code"
- UL Standard 1047 "Isolated Power System Distribution Equipment"
- UL Standard 1022 "Line Isolation Monitors"
Isolated Power Panel
The isolated power panel shall be a PG LIFELINK Surgical Facility Panel. The panel shall be UL listed under Standard 1047 and shall incorporate the following features and components:
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Enclosure shall be a three-piece assembly consisting of back box, chassis and front trim. The back box shall be fabricated of galvanized steel in accordance with UL Standard 50, "Standard for Cabinets and Boxes" and shall be flush mounted, unless indicated otherwise, at the elevation shown on the plans. All internal electrical components shall be mounted on a galvanized steel chassis which bolts onto studs located in the back box. The front trim shall be made of 12-gauge stainless steel polished to a #4 satin finish and shall have a 1.5 inch return flange on all sides.
It shall attach to the back box with a continuous piano hinge and be secured in the closed position with heavy-duty pawl fasteners.
- Isolation Transformer shall be single phase, 60 Hz, ______ KVA (specify 3, 5, 7.5, 10 or 15) with ______ volt primary (specify 120, 208, 220, 240, 277, or 480) and 120 volt secondary. The transformer shall be of stacked core design with an electrostatic shield between the primary and secondary windings. For transformers 5 KVA and smaller the leakage current shall not exceed 10 microamperes and the noise level shall not exceed 35dB. For 7.5 KVA transformer the leakage current shall not exceed 14 microamperes and the noise level shall not exceed 35 dB. The 10 and 15 KVA shall not exceed 25 microamperes and 40dB.
- Line Isolation Monitor (LIM) shall be the PG LIFELINK Mark IV self-testing and self-calibrating LIM. It shall continuously monitor the impedence from each secondary conductor to ground without the use of switching circuitry and shall display the total hazard current of the system on an ammeter. The LIM shall be capable of detecting all combinations of resistive and capacitive faults whether they are balanced, unbalanced or hybrid. The LIM shall not contribute more than 25 microamperes to the total hazard current of the system.
The LIM shall alarm when the total hazard current (THC) reaches a value of 5 milliamperes (Ma). When the THC is less than 5Ma, a green light shall be illuminated indicating normal conditions. Should the THC reach 5Ma, a red light shall illuminate and a buzzer sound indicating an alarm. A silence switch shall be provided to quiet the buzzer while leaving the red light on. The LIM shall automatically reset to normal status when the fault condition is corrected.
The LIM shall also detect and signal an alarm if the ground connection to the LIM is broken. A momentary test switch shall be provided for periodic testing of the LIM circuitry.
The LIM shall be flush mounted on the front of the panel so that the LIM signals are clearly visible at all times.
The LIM shall be recognized under UL Standard 1022.
- Twin X-ray Illuminator shall be FLUSH mounted into panel front and shall have stainless steel trim. Each illuminator shall contain a 32 watt, circular lamp and low leakage ballast. Diffuser shall be white, translucent acrylic, 1/8 inch thick and shall slide up and out for easy access to the lamps. Illuminators shall be controlled by two-pole switch mounted on panel front.
- Elapsed time indicator shall be PG LIFELINK's DT and FLUSH mounted into panel front. The timer shall have a digital display, 2.5 inches high. The controls shall be mounted on the panel front. (OPTION—Dial elapsed timer can be furnished in lieu of digital timer. If desired, specify manufacturer and model number of dual elapsed timer.)
- Clock shall be PG LIFELINK's DC and FLUSH mounted into panel front. The clock shall have a digital display 2.5 inches high. (OPTION—Dial clock can be furnished in lieu of digital clock. If desired, specify manufacturer and model number of clock.)
- Branch circuit breakers shall be 20 amp, two-pole, quantity __________ (16 max.). Only Bolt On Breakers will be considered with a secondary main breaker sized for 120 volt KVA selected.
- Reference ground bus having 24 branch taps for #12 to #6 shall be provided.
- Power receptacles shall be provided on the front of the panel. Receptacles to be 20 amp, 120 volt, type __________ (specify), quantity __________ (4 max.).
- Ground jacks shall be provided on the front of the panel. Jacks to be Hampden SLR-3S, quantity _________ (4 max.).
OPTIONS - Add the following if desired.
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An AM/FM CD player shall be incorporated into the panel. The system shall include an AM/FM stereo
compact disc player, low voltage power supply and two 4-inch stereo speakers.
- OR stereo system shall include the following:
- Support MP3 playback capability
- Support Digital Satellite Radio capability
- Have IR remote control
Wiring
All components within the isolation panel shall be prewired using low leakage type XHHW wire. A barriered compartment shall be provided for the incoming primary feeder and separation shall be maintained between
grounded and ungrounded conductors. Terminal blocks shall be provided for connection of branch circuits and remote signal conductors.
All branch circuit conductors of the isolated power system shall be stranded copper having a cross-linked polyethylene insulation, or equivalent with a dielectric constant of 3.5 or less. Type XHHW is suitable for this purpose. Each branch circuit conductor shall be color-coded in accordance with National Electrical code.
Wire pulling compound produces an adverse effect upon the dielectric constant of conductor insulation and shall not be used when pulling the wire of the isolated power system.
Accessories
The following accessories are part of the isolated power system and are to be furnished where indicated on the plans.
Power and Ground Module, Model RRP, shall be furnished where indicated on plans. Module shall contain _____ (specify quantity) power receptacles, type _____ (specify) and _____ (specify quantity) ground jacks. Devices shall be mounted on a stainless steel trim.
Ground Module, Model RRP-04, shall be furnished where indicated on plans. Module shall contain four ground jacks mounted on a stainless steel front and shall include a galvanized steel back box. A copper ground bus with 16 terminals for wire sizes #14 to #6 and a #14 to #1/0 main lug shall be included.
Master Ground Module, Model GJB-24, shall be furnished where indicated on the plans. Module shall consist of a galvanized steel back box, stainless steel front, and a copper ground bus with 24 terminals for wire sizes #14 to #6 and a #14 to #1/0 main lug.
Furnish _____ (specify quantity) ground cord assemblies. Each cord shall be _____ feet long (specify 5, 8, 10, 12, 15, or 20 feet) and shall consist of an extra flexible copper grounding conductor insulated with green neoprene having a ground plug on one end and a ground lug on the other.
Test and Certification
Upon completion of the installation, a qualified factory technician shall inspect and test the equipment to verify that it is properly installed and operating as specified. A field test report and written certification that the system was installed and operating properly shall be furnished. The factory technician shall also instruct the hospital personnel in the proper use and maintenance of the equipment.
Approved Manufacturers
This specification is based on equipment manufactured by PG LIFELINK. Products of other manufacturers will be considered provided they are equal in all respects and request for approval is submitted in writing to the engineer at least 10 days prior to the bid date.
