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)%
MCB
Close/Open
MCB
Feedback
GCB
Close/Open
MCB opening
del
Transfer Del
MCB
Close/Open
MCB
Feedback
GCB
Close/Open
Transfer
Del
MCB opening
