WOODWARD ESDR4 保护继电器 PDF资料
1.产 品 资 料 介 绍:
中文资料:
WOODWARD ESDR4 是一款多功能、可编程的数字保护继电器,专为工业电力系统中发电机、变压器或母线提供全面的保护。它集成了多个保护功能,如过流、欠压、过压、频率保护、差动保护等,适用于中压及高压系统的继电保护应用。
主要功能特点
多重保护功能集成:
过电流保护(50/51)
过/欠压保护(59/27)
频率保护(81O/U)
差动保护、接地故障保护、断相检测等(取决于型号配置)
数字化参数设置与显示:
配有 LCD 屏幕用于参数设置、状态显示、事件记录
支持本地操作或远程通讯配置
事件与故障记录功能:
内部带时间戳的事件记录器,便于故障分析和追溯
可存储最近几十次事件的详细信息
远程通讯能力:
支持 Modbus、Profibus、CANopen 等工业通讯协议(依据型号)
便于集成至 DCS 或 SCADA 系统中,实现远程监控与控制
高可靠性与抗干扰能力:
采用工业级电子元件,适用于恶劣环境
EMC 电磁兼容设计,抗干扰能力强,符合 IEC 标准
技术参数(典型)
项目 | 参数说明 |
---|---|
电源电压 | 24–250V DC 或 85–265V AC/DC(可选) |
输入电流范围 | 1A / 5A CT 输入(可选) |
电压输入范围 | 57V 或 230V 相电压(典型) |
通讯接口 | RS-485 / Modbus RTU(标准),其它可选 |
环境温度范围 | -20℃ ~ +70℃ |
安装方式 | 标准面板嵌入式安装 |
防护等级 | IP52(前面板)/ IP20(整体) |
英文资料:
WOODWARD ESDR4 is a multifunctional, programmable digital protection relay designed to provide comprehensive protection for generators, transformers, or busbars in industrial power systems. It integrates multiple protection functions, such as overcurrent, undervoltage, overvoltage, frequency protection, differential protection, etc., suitable for relay protection applications in medium and high voltage systems.
Main functional features
Multiple protection function integration:
Overcurrent protection (50/51)
Overvoltage/undervoltage protection (59/27)
Frequency protection (81O/U)
Differential protection, ground fault protection, phase failure detection, etc. (depending on model configuration)
Digital parameter setting and display:
Equipped with an LCD screen for parameter settings, status display, and event recording
Support local operation or remote communication configuration
Event and fault recording function:
Internal event recorder with timestamp for easy fault analysis and traceability
Can store detailed information of the last few dozen events
Remote communication capability:
Supports industrial communication protocols such as Modbus, Profibus, CANopen, etc. (depending on the model)
Easy to integrate into DCS or SCADA systems for remote monitoring and control
High reliability and anti-interference ability:
Using industrial grade electronic components, suitable for harsh environments
EMC electromagnetic compatibility design, strong anti-interference ability, in compliance with IEC standards
Technical parameters (typical)
Project parameter description
Power supply voltage 24-250V DC or 85-265V AC/DC (optional)
Input current range 1A/5A CT input (optional)
Voltage input range 57V or 230V phase voltage (typical)
Communication interface RS-485/Modbus RTU (standard), other optional
Environmental temperature range -20 ℃~+70 ℃
Installation method: Standard panel embedded installation
Protection level IP52 (front panel)/IP20 (overall)
2.产 品 展 示
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