AGC Designer’s Reference Handbook
DEIF A/S Page 74 of 168
Parallel status
If an alarm is to be activated only when both the GB and the MB is closed, then the alarm can be
adjusted to ‘parallel’. This is possible for the following alarms:
Menu Description Comment
1180 BUS high voltage 1 1 second delay after breaker closure
1190 BUS high voltage 2 1 second delay after breaker closure
1200 BUS low voltage 1 1 second delay after breaker closure
1210 BUS low voltage 2 1 second delay after breaker closure
1220 BUS high frequency 1 1 second delay after breaker closure
1230 BUS high frequency 2 1 second delay after breaker closure
1240 BUS low frequency 1 1 second delay after breaker closure
1250 BUS low frequency 2 1 second delay after breaker closure
1350 df/dt (ROCOF) 1 second delay after breaker closure
1360 Vector jump 1 second delay after breaker closure
1390 Positive sequence U 1 second delay after breaker closure
Custom inhibit input
The custom inhibit function is made to give the user a possibility to decide which protections
should be inhibited when an input is activated.
To activate the custom inhibit function two things are needed:
1. Configure an input in the input settings in the utility SW.
2. Enable the function as shown in the dialog box below.
For detailed information please refer to the separate manual for option A1-A4.
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