Products

WGB-683A Generator Protection Device

WGB-683A generator protection device is a microprocessor-based unit designed for small to medium-sized generators. It features abnormal protection, backup protection, non-electrical quantity protection, measurement, and control functions, allowing it to coordinate with the power plant’s automation system for efficient operation.

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Device introduction

WGB-683A 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 abnormal protection, back-up protection, non electrical quantity protection, measuring function and control function, can coordinate theautomaticsystemof powerplant to complete the corresponding automation function.

Function configuration

Protective Functions		Abbr
1	Two stage overcurrent protection with compound voltage blocking (memory)	OC1, OC2
2	Three stage stator overload protection	SymOL_Alm, SymOL_Trp, SymInvOL
3	Three stage negative sequence overload protection	NegOL_Alm, NegOL_Trp, InvNegOL
4	Overvoltage protection	OV
5	Undervoltage protection	UV
6	Stator earth-fault protection (Fundamentatal zero sequence overcurrent protection)	ZOC_Fund
7	Stator earth-fault protection (Fundamentatal zero sequence overvoltage protection)	ZOV_Fund
8	Stator earth-fault protection (Third harmonic voltage ratio protection)	V3rhH_Rat
9	Two stage rotor one-point earth-fault protection	1PEFH_Rot, 1PEFL_Rot
10	Rotor two points earth-fault protection	2PEF_Rot
11	Two stage reverse-power protection	RevP_Alm, RevP_Trp
12	Program reverse power protection	RevP_Prog
13	Loss of excitation protection	LossExc
14	Under-frequency protection	UF
15	Over-frequency protection	OF
16	Noumenon (non electrical quantity) protection	Noum BI_1~9
17	Voltage transformer supervision	VTS
18	Control loop check	Control Loop Chk
19	Handcart position check	Handcart Pos Chk
20	Circuit breaker open position check	CB Open Pos Chk
21	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	Ten channels 4-20mA direct current input	Six channels is standard configuration, other four channels are optional
6	Three channels 4-20mA direct current output	Optional

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 largecapacity; 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.
The device is standard configured with six channels 4-20mA inputs, It is optional for device to be configured with three channels 4-20mA output and four channels 4-20mA input，which is convenient for industrial customers to gather data and extend control functions.
Device has rich resource of binary input and Binary output, up to 4830 channels binary input and 22 channels binary output, among them, by flexible configuration,20 channels binary output can be used 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.

Products

WGB-683A Generator Protection Device

WGB-683A Generator Protection Device

Device introduction

Function configuration

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