WGB-633A transformer protection device (Hereinafter referred to as the device) mainly used as backup protection and measure and control device for transformer of 66kV voltage class and under. It can be directly installed in the high voltage switch cabinet or installed in a screen body.
WGB-633A transformer protection device (Hereinafter referred to as the device) mainly used as backup protection and measure and control device for transformer of 66kV voltage class and under. It can be directly installed in the high voltage switch cabinet or installed in a screen body.
| Protective Functions | Abbr | |
| 1 | Compound voltage (VT fuse failure blocking ) | CV |
|
2 |
Two-stage overcurrent protection at the high voltage side (Compound voltage dispark, two delay time) | OC11_H, OC12_H OC21_H, OC22_H |
|
3 |
Negative sequence overcurrent protection on the high voltage side |
NegOC_H |
| 4 | Overload protection on the high voltage side | OvLd_H |
| 5 | Start the ventilation protection | StartVent |
| 6 | Blocking regulating voltage protection | BLK_RV |
| 7 | Three-stage overcurrent protection on the low voltage side (stage 1 and stage 2 with two delay time, compound voltage dispark) |
OC11_L, OC12_ L OC21_ L, OC22_ L |
|
8 |
Negative sequence overcurrent protection on the low voltage side |
NegOC_L |
|
9 |
Inverse-time overcurrent protection on the low voltage side |
InvOC_L |
| 10 | Overload protection on the low voltage side | OvLd_L |
| 11 | Zero sequence overvoltage protection (self-produced) | ZeroOV |
| 12 | Voltage transformer supervision function | VTS |
|
13 |
Non-electrical quantity protection |
Heavy gas, RV_Heavy gas,
Ultra-H temp, Oil level_H, Oil level_L, Pressure RLS, Light gas, RV_Light gas, High temp, AirCool Disa |
| 14 | Control loop check | Control Loop Chk |
| 15 | Circuit breaker open position check | CB Open Pos Chk |
| 16 | Handcart position check | Handcart Pos Chk |
| 17 | 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 | √ |
| 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 |
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.
