Manual
KVCG202/EN M/H
Figure 24: Parallel connection of LDC circuits
The following notes demonstrate how the LDC CTs may be paralleled on a KVGC202
relay.
2RL1 = Lead loop resistance between CT1 and AVR1 plus resistance of AVR
circulating current CT input, KVGC202 terminals 23 and 24 for In=1A
or terminals 25 and 26 for In=5A.
XM1 = CT1 magnetising impedance which will be ignored due to its high value
when CT is unsaturated.
RCT1 = CT1 winding resistance.
RL = Resistance of one lead between AVRs (including any interposing CTs).
CT1 = Driving CT (T1 loaded).
CT2 = Idling CT (T2 loaded).
2IL = Current flowing in line(s) fed by T1/T2 which creates line voltage drop,
which is to be compensated for.
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