TS 970 Transfer Switch
PM163 REV 0 20/02/05 10 Thomson Power Systems
4. GENERAL DESCRIPTION
Thomson Power Systems TS 970 series of Automatic Transfer Switches employ two position power
contactor unit and a microprocessor based controller to automatically transfer system load to a
generator supply in the event of a utility supply failure. System load is then automatically re-transferred
back to the utility supply following restoration of the utility power source to within normal operating
limits.
The standard TS 970 series Automatic Transfer Switch is rated for 100% system load and requires
upstream over current protection.
4.1. TSC 900 ATS CONTROLLER
The TS 970 series transfer switches use a type TSC 900 microprocessor based controller,
which provides all necessary control functions for fully automatic operation. The TSC 900
controller consists of two parts; a front door mounted graphical touch screen display (GHC),
and a switch control unit (SCU) which is mounted inside the transfer switch door. The two parts
are interconnected via a USB 3.0 high speed communication cable which includes DC power.
For further information on the TSC 900 Transfer Controller, refer to separate instruction manual
PM151.
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