THOMSON TSC 800 - V2.2 - Post-Transfer Delay (Ldc); Transfer Logic

TSC 800 TRANSFER SWITCH CONTROLLER
PM 049 REV 10 08/09/25 Thomson Technology
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7.5.6. POST-TRANSFER DELAY (LDC)
The post-transfer delay period will be initiated expiry of the pre-transfer delay
(overlapping) in either direction. The post-transfer output relays will energize (as per
the post-transfer time setting) after the load transfer and will stay energized until the
post-transfer delay time period expires. Select desired post-delay time in seconds.
The range of settings is 0 to 300 seconds. If no delay is required, set this time delay to
zero.
7.5.7. TRANSFER LOGIC
NOTE: This feature is user selectable in TSC 800 software version 1.3 (or
greater). The TSC 800 transfer controller software contains a user selectable function
for type of transfer logic required for specific applications. This feature will be factory
set for specific type of application and transfer mechanism used and therefore should
not require resetting.
Selectable operating logic is as follows:
MAINTAINED: The TSC 800 transfer output signals will stay in the
‘MAINTAINED” energized state upon a source failure and will only de-energize
when the alternate source becomes available. NOTE: the transfer output
signal will de-energize upon a total loss of source voltage.
DROPOUT: The TSC 800 transfer output signals will “DROPOUT” (or de-
energize) when the connected source goes out of normal voltage or frequency
limits. The transfer output signal will only re-energize when the connected
source returns to normal limits.