InteliATS
NT
PWR, SW version 2.5, ©ComAp – May 2015 70
IA-NT- PWR-2.5-Reference Guide.pdf
EmergStart Del [s]
Delay after the mains failure to the start of the gen-set
Step: 1 s
Range: 0 – 6000 s
MainsReturnDel [s]
Delay after the mains return to the GCB opening.
Step: 1 s
Range: 1 – 3600 s
Transfer Del [s]
Delay after GCB opening to MCB closing during the return procedure.
Delay after MCB opening to GCB closing if the setpoint MCB Opens On set to GENRUN
Step: 0.1 s
Range: 0 – 600.0 s
The time charts bellow show recommended setting of AMF Settings: Transfer Del setpoint.
If the Transfer Del setpoint is set shorter
than the time required for opening of the
circuit breaker, the controller closes GCB
Close/Open output straight away (100 ms)
after the MCB feedback input deactivates.
If some delay between MCB feedback
deactivation and closing of GCB Close/Open
output is required, then the Transfer Del
must be set to sum of “MCB opening” + “del”
time.
MCB Close Del [s]
Delay after mains returns to MCB closing, if gen-set is not running(e.g. is in start-up procedure)
Step: 0.1 s
Range: 0 – 60.0 s
Mains >V [%]
Threshold for mains overvoltage. All three phases are checked. Maximum out of three is used.
Step: 1% of Nominal voltage
Range: 50 (Mains <V) – 150%
Mains <V [%]
Threshold for mains under voltage. All three phases are checked. Minimum voltage out of three
phases is used.
Step: 1% of nominal voltage
Range: 50% – 150 (Mains >V)%
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