Final System Testing
The Factory Field Service Technician will perform commissioning tests prior to Contractor turning equipment over to the Owner.
Testing shall include a complete inspection of all connections and materials used. The contractor shall be prepared to demonstrate that proper polarity was observed and the installation practices were in accordance with NEC Article 517 Section 160, approved drawings, and project specifications. The factory technician shall verify and record system leakage currents, and simulate line-to-ground faults on the isolated power system to verify that Line Isolation Monitor is operating properly.
The factory technician shall instruct the hospital maintenance and medical staff on the proper use, maintenance, and basic testing of the isolated power system. A demonstration of all system features will be presented and options for annual testing and PM services will be explained.
A test report including test data, certification, instruction manual, and as-built drawings will be submitted to Customer.
Codes and Standards
The isolation power system shall be designed and installed 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"
Isolation Panel Start-up Procedure
This procedure should only be used by qualified electricians and maintenance staff. Refer to National Electric Code (NEC) Article 517, and NFPA 99 as well as appropriate local codes.
| |
DANGER
HAZARD OF ELECTRIC SHOCK
 Only qualified personnel should install, operate, service, or maintain this equipment.
Dangerous voltages are present during panel start-up.
Utilize all necessary safety procedures and guidelines. Failure to follow these procedures can result in serious injury or death.
Prior to energizing panel, verify that no loose connections, stray tools, or foreign material is present inside panel.
|
- Review all assembly prints, wiring diagrams, and panel schedules. Verify all electrical feeds are of proper voltage and adequately protected from overload.
- Verify that all circuit breakers are in the OFF position.
- Disconnect Line Isolation Monitor at the 15-pin harness connector on bottom side of LIM. (Use caution not to damage wires, connector, or terminal pins. Use a wide flat blade screw driver to carefully pry connector straight down. Use even pressure so that connector does not rotate and bend terminal pins. Do not pull on wires.)
- Turn Secondary Main breaker (if present) ON. Use a Digital Multi-Meter to verify that there is no continuity between either side of the secondary transformer winding and the reference ground bus. Turn Secondary Main breaker (if present) OFF. If continuity exists between either leg, panel has been improperly wired. Contact manufacturer and do not proceed with start-up.
- Energize feeder source for Isolation Panel. Verify Proper voltage at Primary Main input terminals.
- Energize Primary Main circuit breaker. Verify proper voltage at Secondary Main input terminals.
- Energize Secondary Main circuit breaker. Verify proper voltage at bus bars. (Note: Line-to-Ground voltages should be approximately 40-70% of nominal Line-to-Line voltage)
- De-Energize Primary and Secondary Mains. Re-connect LIM.
- Energize Primary and Secondary Mains.
- Verify that LIM performs start-up and self-calibration routine. After approximately 45 seconds, LIM should display Total Hazard Current of less than 0.5 mA. Press and release "Push to Test" button on front of LIM to manually calibrate unit.
- Verify that all Remote Annunciators are operating properly.
- Energize secondary branch breakers as required.
- Schedule Field Checkout testing with manufacturer.
