TP-6461 1/08 65Section 4 Controller Test and Replacement
Load control contacts close
Post-transfer load control (as programmed*)
Transfer to standby source
Generator set engine start contacts close
Preferred-to-standby time delay and pre-transfer
load control time delays (as programmed*)
In-phase monitor or transfer to off
(as programmed*)
Standby-to-preferred time delay and pre-transfer
load control (as programmed*)
Load control contacts close
Transfer to preferred source and post-transfer
load control (as programmed*)
Load control contacts open
Test started
Time delay engine cooldown (TDEC)
(as programmed*) (default = 0)
Generator set engine start contacts open
In-phase monitor or transfer to off
(as programmed*)
Test ended
* See the Transfer Switch Operation and Installation Manual.
Load control contacts open
Figure 4-9 Test with Load Sequence
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