XJ Electric WGB-641A Microcomputer-Based Capacitor Protection Device

1 Device Introduction
The WGB-640A series microprocessor-based capacitor protection device (hereinafter referred to as the device) is mainly used for the protection, measurement, and control of shunt capacitors installed at voltage levels of 10KV and below. It can be directly mounted on high-voltage switchgear or installed in panels.

1.1 Function Configuration:
Protection Functions
1 Three-stage overcurrent protection 
2 Zero-sequence current protection 
3 Overvoltage protection 
4 Undervoltage protection 
5 Unbalanced current protection 
6 Unbalanced voltage protection 
7 Bridge differential current protection 
8 Differential voltage protection 
9 Non-electrical protection 
10 TV wire break detection alarm 
11 Control circuit abnormality alarm 
12 Trip position abnormality alarm 
13 Trolley position abnormality alarm 
14 Spring not charged alarm 
Measurement and Control Functions
1 Telemetry collection, device telemetry change, accident telemetry 
2 Normal circuit breaker remote control opening/closing 
3 Remote measurement of analog quantities such as IA, IB, IC, Ua, Ub, Uc, Uab, Ubc, Uca, P, Q, f, COSφ, etc. 
4 Fault recording 
5 3 channels of 4-20mA current output 
6 4 channels of 4-20mA current input