Thomson Power Systems TS 970 User Manual

TS 970 Transfer Switch
PM163 REV 0 20/02/05 37 Thomson Power Systems
Will not transfer to generator
source upon failure of utility
source (con’t)
Faulty Power contactor unit
Refer to Power Contactor unit Troubleshooting
Section
Transfer Mode selector is not in “Auto”
position
Turn Transfer Mode selector to “Auto” position
A loose control wire connection
Check all wiring connections in the ATS
Defective TSC 900 controller
• Verify TSC 900 has 120VAC control power
applied to the generator control power input (J1-
12, 13) and Diagnostic green LED is flashing.
• Verify TSC 900 has 120VAC control power
applied to the ATS control contacts (J1-1).
• Verify TSC 900 SCU has SD Memory Card fully
inserted into socket.
If defective Return to Thomson Power systems using
RMA process
Faulty Power Contactor unit auxiliary
contact
Verify Generator & Utility auxiliary contacts are
operating correctly
Transfer to generator source
without a power failure in the
utility source
A Load Test mode has been activated
locally or remotely
Check TSC 900 GHC Home Page status indicators
An Exercise Test mode has been activated
by the TSC 900 scheduler
Check TSC 900 GHC Scheduler page
Utility supply is not operating at correct
voltage or frequency levels.
Verify correct nominal levels the utility source should
be operating at and compare to TSC 900 settings for
under/over voltage, voltage phase balance and
under/over frequency
TSC 900 has incorrect utility voltage or
frequency settings for the ATS.
Re-Program TSC 900 with correct settings as required
for voltage or frequency.
Utility power switching device has tripped
open due to an over current condition and
TSC 900 “Transfer Fail” alarm is activated
on GHC.
Determine cause of alarm and rectify before TSC 900
is reset.
A loose control wire connection
Check all wiring connections in the ATS
Defective TSC 900 controller
• Verify TSC 900 is reading correct Utility Voltage
or frequency on GHC as compared to separate
meter.
If defective Return to Thomson Power Systems using
RMA process
Generator does not start or stop
when it should
Remote engine control panel is not set to
automatic mode
Verify remote engine control panel is set for automatic
operation

Thomson Power Systems TS 970 Specifications

General

Brand	Thomson Power Systems
Model	TS 970
Category	Switch
Language	English