InteliATS
NT
PWR, SW version 1.0, ©ComAp – March 2009
42
IA-NT- PWR-1.0-Reference Guide R1.pdf
The time charts bellow show recommended setting of
AMF Settings
:
Transfer Del
setpoint.
If
the
Transfer Del
setpoint is set shorter
If some delay between
MCB feedback
than the time required for opening of the
deactivation and closing of
GCB Close/Open
circuit breaker, the controller closes
GCB
output is required, then the
Transfer Del
Close/Open
output straight away (100 ms)
must be set to sum of “MCB opening” + “del”
after the
MCB feedback
input deactivates.
time.
MCB
Close/Open
MCB
Close/Open
MCB
Feedback
GCB
Close/Open
MCB
Feedback
GCB
Close/Open
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:
0.1s
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 undervoltage. All three phases are checked. Maximum out of three is used.
Step:
1% of nominal voltage
Range:
50% – 150 (Mains >V)%
Mains
V
Del [s]
Delay for mains undervoltage and overvoltage
Step:
0.1 s
Range:
0 – 600.0 s
Mains
V
Unbal
[%]
Threshold for mains voltage unbalance
Step:
1% of Nominal voltage
Range:
1 – 150%
Mains
VUnb
Del
[s]
Delay for mains voltage unbalance
Step:
0.1 s
Range:
0- 60.0
Mains
>Freq [%]
Threshold for mains overfrequency. All three phases are checked. Maximum out of three is used.
Step:
0.1% of Nominal frequency
Range:
50 (Mains <Freq) – 150.0%
MCB opening del
Transfer Del
Transfer
Del
MCB opening
