XJ Electric WGB-651A Microcomputer Motor Protection and Control Device

1. Device Introduction
The WGB-650A Microcomputer Motor Protection and Control Device (hereinafter referred to as the device) is primarily suitable for the protection and control of medium and high voltage asynchronous motors at voltage levels of 10KV and below.
The WGB-651A Microcomputer Motor Protection is used for the protection of small and medium-sized asynchronous motors below 2000KW; the WGB-652A Microcomputer Motor Protection is used for the protection of large asynchronous motors of 2000KW and above. It can be directly installed on high-voltage switchgear cabinets or mounted in panels.

1 Function Configuration:
Protection Functions
1 Prolonged Start Protection 
2 Two-Stage Current Protection 
3 Overload Protection 
4 Inverse Time Overcurrent Protection 
5 Overheat Protection 
6 Three-Stage Negative Sequence Overcurrent Protection 
7 Zero-Sequence Overcurrent Protection 
8 Overvoltage Protection 
9 Undervoltage Protection 
10 Differential Instantaneous Protection 
11 Percentage Differential Protection 
12 Differential Current Over-Limit Detection Alarm 
13 TA Break Detection Alarm 
14 Magnetic Balance Differential Protection 
15 TV Break Detection Alarm 
16 Four-Channel Non-Electrical Protection 
17 FC Circuit Lockout Alarm
18 Control Circuit Abnormal Alarm 
19 Trolley Position Abnormal Alarm 
20 Trip Position Abnormal Alarm 
21 Spring Not Charged Alarm 
Control and Monitoring Functions
1 Telemetry Collection, Device Telemetry Change, Accident Telemetry 
2 Normal Circuit Breaker Remote Opening/Closing 
3 Telemetry 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