APPENDIX “A”
THOMSON TECHNOLOGY©
TYPICAL AUTOMATIC TRANSFER SWITCH
COMMISSIONING PROCEDURES Model Series TS 870
iii) Green “Load” LED is “ON”
10)To verify all LED’s are operational, perform a “LAMP TEST” operation (lamp test is initiated by pressing and holding the 2 push buttons on the TSC 80 faceplate simultaneously “ON” until all the LED’s change state).
11)Prior to operating the generator, ensure it is ready to be energized and the site electrical contractor and/or owner (as required) give authorization to proceed. In preparation for operation, turn the generator’s engine control switch to the “Automatic” start position.
12)To transfer the generator on load, perform a load test by pressing the Utility Power Fail Simulate pushbutton “ON” and holding it for approximately 5 seconds until the LED light above the push button changes state. The engine should start following the
once the generator’s output rises above 85% nominal voltage and 90% nominal frequency. Once the Utility power switching device opens, the transfer switch mechanism will pause in the neutral position for the
i)Generator Source green LED is “ON”
ii)Red LED above mimic bus for the generator source is “ON”
iii)Green “Load” LED is “ON”
iv)Utility Source green LED is “ON”
v)Utility Power Fail Simulate yellow LED is “ON”
vi)Green LED above mimic bus for the Utility source is “OFF”
13)To terminate the test, press the Utility Power Fail Simulate push button on the TSC 80 faceplate again and hold until the LED above the pushbutton changes state. The transfer switch will begin transferring to the utility supply following the
14)Perform a power outage test by opening the upstream utility feeder breaker. The TSC 80 controller Utility supply LED lights will
15)Return the transfer switch to utility power by
16)Repeat tests #12 through 14 two (or more) times to ensure correct operation.
17)Automatic Plant Exercise Operation (OPTIONAL): If an automatic weekly plant exercise feature is desired, press the GENERATOR EXERCISE Mode push button on the TSC 80 faceplate.