TS 910 TRANSFER SWITCH
PM140 REV 2 14/01/23 13 Thomson Power Systems
Do not open equipment until ALL power sources are disconnected
This equipment must be installed and serviced only by qualified electrical
personnel utilizing safe work practices and appropriate Personal Protective
Equipment (PPE). Failure to do so may cause personal injury or death
5.2.3 RETURN FROM SERVICE DISCONNECT MODE
To return the system back to automatic operation following a Service Disconnect
mode, follow procedure shown below:
5.2.3.1 CLOSE ATS ENCLOSURE DOOR: Prior to Load re-energization, ensure the transfer
switch enclosure door/front cover is adequately closed with all provided fasteners.
5.2.3.2 CLOSE UITLITY SERVICE DISCONNECT BREAKER: To re-energize the load, remove the
padlock(s) from the Utility Service Disconnect Circuit Breaker and or ATS door, and move
the circuit breaker to the CLOSED position. The Load will be re-energized and the transfer
switch will remain in the utility supply position.
5.2.3.3 CLOSE GENERATOR CIRCUIT BREAKER: At the generator set, re-close the main
generator output power circuit breaker.
5.2.3.4 RE-ENABLE AUTOMATIC GEN STARTING CONTROL: At the generator set, turn its
automatic starting control back to the AUTOMATIC position to return the system back to
fully automatic operation.
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