APPENDIX “A”
THOMSON TECHNOLOGY
©
TYPICAL AUTOMATIC TRANSFER SWITCH
COMMISSIONING PROCEDURES
Model Series TS 840
9087A - 198
th
Street, Langley, B.C. Canada V1M 3B1 • Telephone (604) 888-0110 • Telefax (604) 888-3370
iii) Green “Load” LED is “ON”
9) 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).
10) 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.
11) 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 3-second engine start delay period and the transfer switch will begin
transferring to the generator supply once the 2-second engine warm-up timer
expires. Note: The engine warm-up timer will only begin timing 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 3-second neutral delay period, then the
mechanism will complete the transfer and close the generator power switching
device. To determine correct operation, observe the following on the TSC 80
faceplate:
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”
12) 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
2-minute utility return delay period. Note: the utility return delay timer will only
begin timing if the utility voltage is above 85% nominal on all phases. Once the
Generator power switching device opens, the transfer switch mechanism will
pause in the neutral position for the 3-second neutral delay period, then the
mechanism will complete the transfer and close the Utility power switching device
to return the load to the Utility source. Once the load has transferred onto the
utility source, the engine will continue to run for the 2-minute cool down time delay
period and will then it will automatically stop.
13) Perform a power outage test by opening the upstream utility feeder breaker. The
TSC 80 controller Utility supply LED lights will de-energize; the generator set will
start after the 3-second engine start delay has expired. The generator should
transfer on load as described in item #12 above.
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