TSC 800 TRANSFER SWITCH CONTROLLER
PM 049 REV 9 06/04/24 Thomson Technology
58
the Maximum Find Neutral Delay function must typically be set for 0.0 seconds for
correct operation.
7.5.11. NEUTRAL DELAY TIMER (NDT)
The neutral delay time period will be initiated once both of the supply power-switching
devices are open during a transfer sequence. Select desired neutral delay time in
seconds. The range of settings is 0 to 60 seconds. If no delay is required, set this
time delay to zero. NOTE: The neutral delay may be bypassed should the operating
power fail for longer than the timer setting.
NOTE:
The NDT time delay period may be reduced if the neutral delay
bypass is enabled. Refer to section 7.5.12 for further
information.
7.5.12. NEUTRAL DELAY BYPASS
The TSC 800 transfer switch controller contains a “NEUTRAL DELAY BYPASS” logic,
which allows a shorter neutral delay period during transfer if the load bus voltage falls
to safe levels before the transfer sequence is completed. This feature is user
programmable and allows 2 different functional settings which are described below:
DISABLED: The transfer switch neutral delay period will operate as per the
Neutral Delay Timer setting.
ENABLED: The transfer switch neutral delay period will be bypassed if the
load bus voltage falls to safe levels before the transfer sequence is completed.
7.5.13. MAXIMUM TRANSFER TIME
The TSC 800 transfer control logic includes an adjustable time delay feature to detect
when a transfer switch mechanism fails to operate. This time delay is set to a time
value which is greater than the typical time that the transfer mechanism typically takes
to operate from one supply position to the opposite supply position. This feature is
factory set to match the specific transfer switch mechanism as supplied with the unit.
7.5.14. TRANSFER FAIL
The TSC 800 transfer switch controller contains a “TRANSFER SWITCH FAIL”
detection feature. This feature is user programmable and allows 3 different functional
settings which are described below:
To Next Page
Loading...
Need help?
General
