TSC 900 TRANSFER SWITCH CONTROLLER
PM 151 REV 1 15/10/08 Thomson Power Systems
On the System Voltage Row, select the type of system configuration (i.e. wye or delta) per
voltage diagrams provided, then select the applicable voltage from the drop down list as
shown below. If the desired voltage is not listed, selcect “Custom” and enter the Line to
Line System voltage.
If utilizing external voltage sensing potential transformers, un-check the identified PT box,
then enter the applicable PT primary and secondary winding voltages as shown below.
The controller will calculate the required PT ratio for the application.
To confirm the change, press the “Apply” button.
5.6. EXERCISE TIMER SETUP
The TSC 900 controller has a built-in calendar based programmable exercise timer. The
exercise timer is fully programmable for, day of week, time of day, duration of the test and type
of test mode (i.e. On Load or Off Load). The exercise timer utilizes the TSC 900 GHC internal
real-time clock for referencing all timing functions. The GHC real-time clock utilizes a battery
back-up power source to retain correct time/date settings during short duration utility power
failures.
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