GC-WJ200B Intelligent Microcomputer Protection and Measurement Device

NegotiableUpdate on 03/11

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Product model: GC-WJ200B

Product Details

Product Introduction

The GC-WJ200B series microcomputer comprehensive protection and measurement device is suitable for the protection of transmission lines, bus tie switches, and other voltage levels ranging from 380V to 10kV.

As the basic equipment of power automation system, it has powerful communication function. The device adopts RS485 fieldbus and can optionally add an RJ45 Ethernet interface to ensure real-time and reliable information transmission.

Through the communication network, the GC-WJ200B series microcomputer comprehensive protection and measurement device sends all operational information, including telemetry, remote signaling, protection settings, etc., in real time to the first level SCADA system, and can receive commands such as protection settings modification, realizing the unmanned operation scheme of the substation.

Compliant with standard: DL/T478-2001 General Technical Conditions for Static Relay Protection and Safety Automatic Devices.

Product characteristics

Mother charger protection
current quick-break protection
Time limited current quick break protection
Definite time overcurrent protection
Inverse time overcurrent protection

overload protection
Zero sequence overcurrent protection
Zero sequence overvoltage alarm
Low voltage load shedding protection
Low cycle load reduction protection

Three phase coincidence at once
post-acceleration
PT disconnection discrimination
CT disconnection discrimination
Control circuit disconnection alarm

Measurement function
monitoring function
control function
communication function
Event record

Model Selection

GC-WJ200B1 microcomputer based line protection device
GC-WJ200B2 Microcomputer Transformer Protection Device
GC-WJ200B3 microcomputer capacitor protection device
GC-WJ200B4 microcomputer motor protection device
GC-WJ200B5 Microcomputer PT Monitoring Device
GC-WJ200B6 microcomputer circuit backup automatic switching protection device
GC-WJ200B7 microcomputer based busbar backup automatic switching protection device

Selection List

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TECHNICAL INDEX

Serial Number	Project/Name	unit	Parameter indicators	notes
1	ambient temperature	℃	20±5
2	relative humidity	%	45~80
3	atmospheric pressure	KPa	86~106
4	operation temperature	℃	-20～+60	The average temperature within 24 hours shall not exceed+45 ℃
5	Relative humidity at work	%	95	The maximum monthly average is below 95%, and there is no condensation on the surface of the casing
6	Rated voltage of AC power supply	V	220	-15%～+10%
7	AC power frequency	Hz	50	-1%～+1%
8	Rated voltage of DC power supply	V	220/110
9	Allowable deviation of DC power supply	%	-20～+20
10	Ripple factor of DC power supply	%	Not greater than 5
11	Rated AC current	A	5/1
12	Rated zero sequence current	A	5/0.2	Large grounding system 5A, small grounding system: 0.2A
13	Rated AC voltage	V	100
14	Rated star voltage 3U0	V	100
15	DC circuit power	W	≤8
16	AC voltage circuit	VA	≤ 0.8/phase
17	AC current circuit	VA	≤ 0.8/phase
18	Accurate working range of current	A	0.5～100
19	Accurate working range of voltage	V	1~160
20	DCS DC current range	mA	4~20
21	Protection device setting error	%	＜±3
22	Accuracy of current measurement	%	0.5
23	Voltage measurement accuracy	%	0.5
24	Power and electrical measurement accuracy	%	2.0
25	capacity	A	8	Connect DC250V, 8A (pure resistive load)
26	working life	order	Action 100,00
27	insulation resistance	MΩ	≥1000
28	dielectric strength	Hz	50	2KV，50HZ，1min
29	Impulse Voltage	µS	1.2/50	5KV，（1.2/50）µ S

Outline dimension diagram

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Definition diagram of wiring contacts

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