Deif CGC 400 Reference Book page 42

CGC 400 DRH 4189340786 UK
Example 2:
7065 Mains fail control: Start engine
Mains OK
MB On
GB On
Gen start seq
Gen stop seq
Gen running
Gen f/U OK
Mains failure
detected
Conditions for breaker operations
The breaker sequences react depending on the breaker positions and the frequency/voltage measurements.
The conditions for the ON and OFF sequences are described in the table below:
Sequence
GB ON, direct closing
MB ON, direct closing
GB OFF, direct opening
MB OFF, direct opening
DEIF A/S
t
GBC
t
FD
t
FU
Conditions for breaker operations
t
FOD
Mains OK
Condition
Running feedback
Generator frequency/voltage OK
MB open
Mains frequency/voltage OK
GB open
MB open
Alarms with fail classes:
Shut down or Trip MB alarms
Functional descriptions
t
MBC
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