THOMSON TS 870, Installation, Operating & Service Manual

Page: 42 / 77

TS 870 Transfer Switch
PM062 REV 11 16/04/19 40 Thomson Power Systems
NOTE
When the
Manual
Mode is selected the engine start output logic is
disabled. Where generator voltage is required during manual
operation the local generator controls must be set for manual
operation.
MANUAL TRANSFER TO GEN SUPPLY (Open Transition)
To transfer manually to generator supply, follow procedure listed below;
1. Turn the Transfer Switch door mounted Mode selector to Manual or
Select Man mode on TSC 900 Controller (refer to TSC 900 manual
for further information).
2. Manually start the generator set at its local control panel, and ensure
it is operating at normal voltage and frequency, with its output circuit
breaker closed.
3. Manually open the utility power switching device using the Open
pushbutton located on the ATS door. Verify the utility power
switching device contacts are open via Green (O) Open contact
status flag.
4. Ensure the generator power switching device’s spring mechanism is
fully charged as indicated by Yellow –Spring Charged flag. If the
power switching device is not charged, it maybe manually charged
by locating the manual charge handle mechanism on the face of the
power switching device, then pulling forward and then down 1-6
times until the Yellow Spring Charged flag is displayed. Refer to
Diagrams #1 & 2 below and the power switching device’s manual for
further information.
NOTE:
The yellow OK Flag indicates the power switching
device is charged however it may not be ready to
close if the transfer switch mechanical or
electrical interlocks are not satisfied.
5. If the generator supply is at normal voltage and frequency levels,
manually Close the generator power switching device using the Red
(I) Mechanical Close pushbutton located on the face of the power