TSC 7320 Transfer Switch Controller
PM180 REV 0 23/02/10 Thomson Power Systems
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5.3. VOLTAGE CHANGE PROCEDURE
To change system voltage on the TSC 7320 controller, the transfer switch can be energized
or de-energized to change the system voltage. If the transfer switch is energized, please
ensure the mechanism is in the utility position, and place the controller in “Stop” mode by
pushing the red button in the lower left corner. It is recommended to de-energize the transfer
switch to mitigate any hazardous conditions. Always proceed with caution and follow the steps
below to change the voltage.
NOTE
1. The following instructions detail re-programming the TSC 7320
controller only. Additional procedures are required to change the
voltage sensing transformer taps inside the ATS. Refer to separate
ATS model instructions
2. All system voltage changes are ONLY done via connecting a
designated wire to a different terminal on the TSC 7320 controller. All
alarm values are ONLY changed via software programming.
1. Locating the PIN: First find PINs 14 to 20 on the backside of the TSC 7320 controller.
There will be a wire connected to PIN 14, and that wire will have a label specifying it is the
voltage selection wire.
2. Removing the wire: Using a small flat head screwdriver, loosen the terminal screw for PIN
14, and remove the voltage selection wire out of PIN 14.
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