Synchronising Vector Mismatch Alarm - Deif GPC-3 Designers Reference Handbook

GPC-3 DRH 4189340587 UK

7.5 Synchronising vector mismatch alarm

During synchronisation, the calculation and synchronisation check is based on BB-L1 and DG-L1 measure-
ments.
The "vector mismatch" alarm (menu 2190) will appear if a phase angle difference between BB L2/L3 and Gen
L2/L3 is above 20 deg.
The vector mismatch alarm will by default block the GB close sequence, but the fail class can
be configured in parameter 2196.
If the phase sequence does not match (for example, cable mounted incorrectly), a "Phase seq.
error" will appear and block the GB close sequence.
The vector mismatch timer should be set to a value lower than the GB sync. failure timer (pa-
rameter 2131).
DEIF A/S
Synchronisation
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