WDR-823_Xuji Micro electromechanical Container Protection Device

NegotiableUpdate on 03/29

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The WXH-820 series microcomputer line protection and measurement device realizes the protection and measurement functions of medium and low voltage lines, mainly used for lines and feeders with voltage levels of 66kV and below.

Product Details

1. Introduction to the device

1.1. Function configuration:

	Function Name	WXH-821	WXH-822
protection function	The second paragraphelectricityFlow protection	√
	Three stage current voltage direction protection		√
	Overcurrent acceleration protection (front acceleration, rear acceleration optional)	√	√
	Three phase primary reclosing		√
	Three phase multiple reclosing	√
	Low frequency load shedding protection	√	√
	zero sequenceelectricityFlow protection	√	R1
	Three segment zero sequenceelectricityFlow protection		R2
	Zero current acceleration protection		R2
	Overload protection	√	√
	low voltage protection	√	√
	TVdisconnection detection	√	√
	Control circuit abnormal alarm	√	√
	Abnormal alarm for handcart position (when the main wiring is handcart)	√	√
	Spring energy storage failure alarm	√	√
	Abnormal pressure alarm	√	√
Measurement and control function	Remote signaling input acquisition, device remote signaling displacement, accident remote signaling	√	√
	Normal circuit breaker remote control opening and closing, low current grounding detection remote control opening and closing	√	√
	P、 Q. Telemetry of analog quantities such as IA, IC, Ua, Ub, Uc, f, COS ￠, UAB, UBC, UCA, etc	√	+IB (optional)
	fault recording	√	√
	4Road pulse input	√	√
Note: R1 and R2 are two software models of WXH822 software.

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) The communication protocol adopts IEC-60870-5-103 protocol or MODBUS protocol optional, with dual RS-485 communication interfaces; Networking is economical and convenient, and can directly communicate with microcomputer monitoring or protection management machines.

9) Equipped with wave recording function, the device records the sampling data of 4 cycles before the protection trip and 6 cycles after the trip (24 points per week), and sends it to the substation automation main station after the protection trip. It can also be analyzed through fault analysis software.

10) The export protection method can be configured according to the protection, and the export settings are convenient and flexible.