Deif GPC-3 - Page 120

Relay/
Input
Relay selected
Two relays used
Relay not selected
One relay used
Not
used
Synchronising:
The breaker ON relay and the sync. relay activate at the
same time when synchronising is OK.
Blackout closing:
The breaker ON relay and the sync. relay activate at the
same time when the voltage and frequency are OK.
Synchronising:
The breaker ON relay activates
when synchronising is OK.
Blackout closing:
The breaker ON relay activates
when the voltage and frequency are
OK.
DEFAULT selection
Low Synchronising:
Not possible.
Blackout closing:
The breaker ON relay and the sync. relay activate at the
same time when the voltage and frequency are OK.
Synchronising:
Not possible.
Blackout closing:
The breaker ON relay activates
when the voltage and frequency are
OK.
High Synchronising:
The relays will activate in two steps when the synchronising
is selected:
1. Breaker ON relay activates.
2. When synchronised, the sync. relay activates.
See note below!
Blackout closing:
The breaker ON relay and the sync. relay activate at the
same time when the voltage and frequency are OK.
Synchronising:
Not possible.
Blackout closing:
The breaker ON relay activates
when the voltage and frequency are
OK.
When the two relays are used together with the separate sync. input, notice that the breaker
ON relay will be activated as soon as the GB ON/synchronising sequence is activated. Take
care that the GB ON relay cannot close the breaker before the sync. signal is issued by the
sync. relay.
The selected relay for this function must have the ‘limit’ function. This is adjusted in the I/O
setup.
GPC-3 DRH 4189340587 UK Synchronisation
DEIF A/S Page 120 of 122