TS 880 TRANSFER SWITCH
PM064 REV8 10/01/25 17 Thomson Technology
5.2.2. OVER CURRENT TRIP
Should the utility power switching device trip open due to an over current condition,
the TSC 800 transfer controller will initiate an engine start signal and will permit
transfer of the load to the generator supply. The utility source will be locked out and
the load will remain on the generator supply until the TSC 800 alarm signal is
manually reset.
Refer to the TSC 800 Instruction Manual for further details on Transfer Fail
operation.
Should the generator power switching device trip open due to an over current
condition, TSC 800 transfer controller will initiate transfer of the load to the utility
supply. The generator source will be locked out and the load will remain on the utility
supply until the TSC 800 alarm signal is manually reset.
5.2.3. SERVICE DISCONNECT PROCEDURE
To perform a service disconnect (i.e. to disconnect the utility and generator
supplies), the following procedure is required:
1. Move the "Service Disconnect" control switch located on the door of the transfer
switch to the "Disconnected" position.
2. Verify that the "Service Disconnected" pilot light is illuminated. If the Light is
illuminated, the service has been successfully disconnected and it is safe to perform
any maintenance procedures as required. In this condition, the transfer switch is in
the neutral position, with both utility and generator transfer power switching devices
open. The transfer switch will remain in this condition, regardless of condition of the
utility and generator supplies (i.e. if the utility power fails, the generator will not
receive a start signal, nor will the transfer switch move to the generator position).
NOTE: If the Service Disconnect Light is not illuminated, additional procedures are
required (refer to the following procedure #5.2.4).
3. Attach safety lockout padlock to the "Service Disconnect" control switch to prevent
unauthorized change in operating condition and verify transfer switch door is locked
closed. If the door is not locked, turn and remove door key.
WARNING!
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