Products

WGB-682A Generator Protection Device

WGB-682A Generator Protection Device

WGB-682A generator protection device is a microprocessor-based unit designed for small to medium-sized generators. It includes main protection, excitation transformer protection, and generator control functions, enabling coordination with the power plant’s automation system for efficient operation.

Device introduction

WGB-682A generator protection device (Hereinafter referred to as the device) is a microprocessor-based protection device with advanced and complete functions, mainly used for small or medium sized generator. Device is configured with main protection, excitation transformer protection and control function of generator, can coordinate the automatic system of power plant to complete the corresponding automation function.

Function configuration

Protective Functions Abbr
1 Percentage differential protection PcntDiff
2 Instantaneous differential protection InstDiff
3 Current transformer supervision CTS
4 Difference current out-of-limit protection Diff_OOL
5 Two-stage transverse differential protection TraDiff1, TraDiff2
 

6

Two-stage longitudinal zero sequence overvoltage protection  

ZOV1_Lon, ZOV2_Lon

7 Voltage transformer supervision VTS
 

8

Three-stage overcurrent protection for excitation transformer  

OC1_Exc, OC2_Exc, OC3_Exc

 

9

Three ways binary input protection

(Unit fault, excitation fault, high temperature)

 

UnitFault, ExcFault, HighTemp

10 Three ways non electrical quantity protection Non-E1, Non-E2, Non-E3
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

  • Thedevice has universal AC-DC Input Power, which has a wide adaptability :

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.

  • The device has powerful communication function, standard device configure two Ethernet and two RS485 communication interface and convenient for multiple networking mode, device has flexible communication, which support IEC61850 (optional), IEC-103, TCP-103, IEC-104, MODBUS-RTUand other communication protocols, facilitate communication with a variety of convenient networking with various microcomputer monitoring or the protection and management.
  • Thedevice has rigorous time synchronization, which supports network time synchronization, PPS, PPM or B codes and other time synchronization mode
  • Using dual 32-bit high performance embedded microcomputer processor, RAM and flash memory with large capacity; using SOC solution, which greatly enhanced the capability of data processing,logic operation and information storage and advanced operational speed and reliability.
  • The device uses 16 high precision A/D for data acquisition, collecting 64 points per cycle, which has high measuring accuracy.
  • Back inserted and drawn modules, strong and weak electricity separation; enhanced unit chassis designed for resisting strong vibration and interference, which can be scattered installed on the switch
  • The device can keep more than 400 recent events record and operation record, can keep recording data of 5 times faults occurred recently.
  • Ithas liquid crystal display, English display and menu operation.
  • Real-timemultitasking operating system, modular programming; real-time, high reliability.
  • Thereare 8 sets of protection setting value, which are safe and convenient to switch.
  • It is optional for device to be configured with three channels 4-20mAoutput and four channels 4-20mA input,which is convenient for industrial customers to gather data and extend control functions.
  • Devicehas rich resource of binary input and Binary output, up to 23 channels Binary input and 12 channels binary output, each output can be configured, base which it is convenient to extend or control signal output.
  • Devicehas complete operation circuit and remote controls of circuit breaker.
  • Highintegrated degree: device has protection, measure, control and other function.