WGB-621A Charging protection device (Hereinafter referred to as the device) mainly applies to protect subsection (buscouple) switch of 35kV voltage class and under, realize protection and measure-control function ofsubsection (buscouple) switch. It can be directly installed in the high voltage switch cabinet or installed in a screen body.
WGB-621A Charging protection device (Hereinafter referred to as the device) mainly applies to protect
subsection (buscouple) switch of 35kV voltage class and under, realize protection and measure-control function of
subsection (buscouple) switch. It can be directly installed in the high voltage switch cabinet or installed in a
screen body.
Protective Functions | Abbr | |
1 |
Two-stage charging protection with complex voltage blocking | OC1_Chr, OC1_Chr OC2_Chr, OC2_Chr |
2 |
Three-stage overcurrent protection with complex
voltage blocking |
OC1, OC2, OC3 |
3 | Three-stage zero-sequence overcurrent protection | ZeroOC1,ZeroOC2,ZeroOC3 |
4 | Manual synchronization | M-Sync |
5 | Voltage transformer supervision function | VTS |
6 | Compound voltage supervision | CV |
7 | Control loop check | Control Loop Chk |
8 | Circuit breaker open position check | CB Open Pos Chk |
9 | Handcart position check | Handcart Pos Chk |
10 | Spring not store energy check | Spring not-E Chk |
Measure and Control Functions | ||
1 |
Remote signaling acquisition, device remote signaling change and fault remote signaling |
√ |
2 | Remote control tripping and closing circuit breaker | √ |
3 | Analog telemetering: IA, IB, IC, Ua, Ub, Uc, Uab, Ubc, Uca, P, Q, f, Cosf | √ |
4 | Fault wave records | √ |
5 | Three channels 4-20mA direct current output |
Optional |
6 | Four channels 4-20mA direct current input |
Device has universal AC-DC auxiliary power supply; the maximum input voltage is 500V, suitable for all kinds of complicated power supply place;
Device has universal AC-DC operation circuit and discrete input circuit power supply, which can apply to AC or DC power supply system.