Thomson Power Systems TSC 900 User Manual

TS 970 Transfer Switch
PM163 REV 0 20/02/05 24 Thomson Power Systems
Once both Utility and Generator supplies are de-energized the following procedure can be
used to operate the Transfer Switch Manually.
7.1.1. MANUAL CLOSING TO UTILITY POSITION (SIDE A)
1. With all power de-energized, open ATS enclosure door and locate manual operation
handles (Shaft wrench & Screwdriver).
2. Un-plug the ATS control isolation plug (PL-15) to prevent automatic operation (refer to
SECTION 8 for photo showing location of PL-15).
3. Trip Open Generator (Side B) Main Contacts by inserting the screwdriver into the
“TRIP” hole as shown below and pushing until Gen Main Contacts open as shown by
the Gen Position Indicator flag “OFF”.
4. Close Utility (Side A) Main Contacts by attaching the shaft wrench onto the Power
Contactor Operating Shaft as shown below and rotating the shaft wrench in the direction
shown below until the Utility Main Contacts latch closed as shown by the Utility “ON”
indicator.
NOTE:
- DO NOT over-torque the shaft wrench / operating shaft handle once position has been attained.
- DO NOT turn the shaft wrench in the opposite direction as the operating shaft turns in one
direction only.
5. Once ATS is manually operated to the Utility “ON” position, remove the shaft wrench &
screwdriver from the Power Contactor and secure them away from any live power
sources.
6. Close ATS door and re-energize Utility power to return power to the load.

Thomson Power Systems TSC 900 Specifications

General

Brand	Thomson Power Systems
Model	TSC 900
Category	Switch
Language	English