Deif Multi-line 2 User Manual

AGC Designer’s Reference Handbook
DEIF A/S Page 50 of 168
The conditions for the ON and OFF sequences are described in the table below:
Conditions for breaker operations
Sequence Condition
GB ON, direct closing Running feedback
Generator frequency/voltage OK
MB open
MB ON, direct closing Mains frequency/voltage OK
GB open
GB ON, synchronising Running feedback
Generator frequency/voltage OK
MB closed
No generator failure alarms
MB ON, synchronising Mains frequency/voltage OK
GB closed
No generator failure alarms
GB OFF, direct opening MB open
MB OFF, direct opening Alarms with fail classes:
Shut down
Trip GB alarms
GB OFF, deloading MB closed
MB OFF, deloading Alarms with fail classes:
Trip and stop
When the breakers open and they need to reclose immediately, then the
adjustable timer 6252 GB load time or 6615 MB load time must expire before
closing is possible. This is the time the breaker uses to reload the spring.
If the digital inputs ‘MB spring loaded’ and ‘GB spring loaded’ are configured,
then they must be activated before the breakers can close.

Deif Multi-line 2 Specifications

General

Brand	Deif
Model	Multi-line 2
Category	Controller
Language	English