XJ Electric WGB-611A Microcomputer Line Protection and Control Device

1 Device Introduction

The WGB-611A Microcomputer Line Protection Device (hereinafter referred to as the device) is mainly used for lines and feeders at voltage levels of 35kV and below. It can be directly installed on high-voltage switchgear or mounted in panels.

1.1 Function Configuration:

Protection Functions
1 Three-stage directional current protection with undervoltage lockout
2 Overcurrent acceleration protection (front acceleration/rear acceleration)
3 Overload protection (trip/alarm optional)
4 Three-stage directional zero-sequence current protection
5 Zero-sequence acceleration protection (front acceleration/rear acceleration)
6 Undervoltage load shedding protection
7 Underfrequency load shedding protection
8 Three-phase one-shot reclosing
9 Bus TV broken wire detection alarm
10 Line TV broken wire 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 open/close
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