WGB-640A Series capacitor protection device (Hereinafter referred to as the device) mainly applies to protect and measure-control installed parallel capacitor of 10kV voltage class and under. It can be directly installed in the high voltage switch cabinet or installed in a screen body.
WGB-640A Series capacitor protection device (Hereinafter referred to as the device) mainly applies to protect and measure-control installed parallel capacitor of 10kV voltage class and under. It can be directly installed in the high voltage switch cabinet or installed in a screen body.
| NO. | Protective Functions | Abbr | WGB-641A | WGB-642A | WGB-643A |
| 1 | Three-stage overcurrent protection | OC1,OC2,OC3 | √ | √ | √ |
| 2 | Zero sequence overcurrent protection | ZeroOC | √ | √ | √ |
| 3 | Overvoltage protection | OV | √ | √ | √ |
| 4 | Undervoltage protection | UV | √ | √ | √ |
| 5 | Current unbalanced protection | UB_OC | √ | ||
| 6 | Voltage unbalanced protection | UB_OV | √ | ||
| 7 | Bridge differential current protection | BDiff_OC | √ | ||
| 8 | Differential voltage protection | Diff_OV | √ | ||
|
9 |
Non-electrical quantity protection |
Non-E1, Non-E2,
Non-E3 |
√ |
√ |
√ |
| 10 | Voltage transformer supervision function | VTS | √ | √ | √ |
| 11 | Control loop check | Control Loop Chk | √ | √ | √ |
| 12 | Circuit breaker open position check | CB Open Pos Chk | √ | √ | √ |
| 13 | Handcart position check | Handcart Pos Chk | √ | √ | √ |
| 14 | 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 | |
| Communication Functions | ||
|
1 |
Two-way RS485 communication interface, support IEC-103, MODBUS-RTU communication protocols |
√ |
|
2 |
Two-wayRJ45 Ethernet interface, support TCP-103, IEC-104 communication
protocols |
√ |
| 3 | One-way time synchronization with pulse or B code mode | √ |
| 4 | Support IEC61850 communication protocol | Optional |
Main features
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 binary input circuit power supply, which can apply to AC or DC power supply system.