WDR-820_Xuji Micro electromechanical Container Protection Device

NegotiableUpdate on 03/29

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

WDR-820_Xuji Micro electromechanical Container Protection Device

Product Details

1. Introduction to the device

Suitable for the protection and measurement of parallel capacitors installed at voltage levels of 66kV and below.

1.1. Function configuration: Please refer to Table 1-1

Table 1-1: Functional Configuration

	Function Name	WDR-821	WDR-822	WDR-823
protection function	Two stage current protection	√	√	√
	overvoltage protection	√	√	√
	low voltage protection	√	√	√
	Unbalanced current protection	√
	Unbalanced voltage protection	√
	Bridge differential current protection		√
	Differential voltage protection			√
	Zero sequence current protection/small current grounding line selection	√	√	√
	TV disconnection alarm	√	√	√
	Control circuit abnormal alarm	√	√	√
	Independent operating circuit	√	√	√
Measurement and control function	8-channel remote signal input acquisition, device remote signal displacement, accident remote signal	√	√	√
	Normal circuit breaker remote control opening and closing, low current grounding detection remote control opening and closing	√	√	√
	Telemetry of analog quantities such as IA, IB, IC, Ua, Ub, Uc, P, Q, f, etc	√	√	√
	Statistics of switch accident opening and closing times and event SOE, etc	√	√	√
	fault recording	√	√	√
	4-channel pulse input	√	√	√

1.2. Main Features

1. The reinforced unit chassis is designed to resist strong vibration and interference, and is particularly suitable for harsh environments. It can be installed separately on the switchgear for operation.

2. All integrated circuits are made of industrial products, ensuring high stability and reliability of the device.

3. Using 32-bit DSP as the protection CPU, configured with large capacity RAM and Flash Memory; Strong data operation, logical processing, and information storage capabilities, high reliability, and fast running speed.

4. Using 16 bit A/D as data acquisition, data collection is conducted 24 hours a week to ensure high measurement accuracy.

5. Adopting graphical LCD display and fully Chinese menu style human-computer interaction; It can display various operating statuses and data in real time, with detailed and intuitive information, and easy operation and debugging.

6. It can independently set 8 sets of protection settings, and the switching of the setting area is safe and convenient.

7. Large capacity information recording: capable of storing no less than 100 recent historical reports, with action parameters, power failure maintenance, and easy accident analysis.

8. Adopting DL/T667-1999 protocol and equipped with RS-485 communication interface; Networking is economical and convenient, and can directly communicate with microcomputer monitoring or protection management machines.