描述
GE SR745-W2-P5-G5-HI是一款高性能的变压器保护继电器，专为工业电力系统设计，广泛应用于电力、能源、冶金、石化等领域，以确保变压器在复杂工况下的安全运行。以下是其核心功能与技术参数的综合概述：
一、核心功能
多功能保护
-提供过励磁闭锁、过频/低频保护、受限接地故障保护、系统过载保护等核心功能，有效应对短路、过流、温度异常等故障。
-支持过励磁保护元件，具备自适应谐波抑制和时间过流功能，可实时响应系统波动。
高速响应与监测
-拥有16个逻辑输入端口和扩展端口阵列，支持温度、电流等变量的实时监测与快速响应，延长变压器寿命并优化性能。
灵活通信与配置
-配备RS232、RS485/RS422通信接口，支持单个或多个继电器的远程监控。可选以太网功能（型号含“T”选项），实现非直接连接的网络化管理。
-通过EnerVista 745软件，用户可轻松设置参数、分析数据趋势，并生成报告。
二、技术参数
工作环境：-40°C至+60°C（工作），-40°C至+80°C（存储），湿度90%（无冷凝）。
控制电源：90-300 V DC或70-265 V AC（48-62 Hz），适用于高控制功率场景。
通信接口：前面板RS232、后面板RS485/RS422，可选以太网（需特定型号）。
尺寸与重量：约4.8公斤（含外壳），紧凑设计便于安装。
三、应用场景
电力行业：变电站、发电厂的变压器保护与管理。
工业领域：冶金、石化、化工等高负载环境的设备保护。
特殊需求场景：需高速响应与精准监测的场合，如电梯、停车场电力系统。
四、优势特点
高可靠性：采用双绕组/三绕组设计，支持“2oo3”冗余逻辑，符合SIL认证标准。
维护便捷：光学元件不与水接触，减少清洁需求；EnerVista 745软件简化参数配置流程。
扩展性：支持模块化组网，可与其他继电器无缝集成，适应复杂系统需求。
GE SR745-W2-P5-G5-HI is a high-performance transformer protection relay designed for industrial power systems.It is widely used in power,energy,metallurgy,petrochemical and other fields to ensure the safe operation of transformers under complex working conditions.The following is a comprehensive overview of its core functions and technical parameters:
I.Core functions
Multi-function protection
-Provides core functions such as overexcitation lockout,overfrequency/underfrequency protection,limited ground fault protection,system overload protection,etc.,effectively responding to faults such as short circuit,overcurrent,and temperature anomaly.
-Supports overexcitation protection elements,has adaptive harmonic suppression and time overcurrent functions,and can respond to system fluctuations in real time.
High-speed response and monitoring
-With 16 logic input ports and an array of expansion ports,it supports real-time monitoring and rapid response of variables such as temperature and current,extending transformer life and optimizing performance.
Flexible communication and configuration
-Equipped with RS232,RS485/RS422 communication interfaces,it supports remote monitoring of single or multiple relays.Optional Ethernet function(model contains”T”option)to achieve network management without direct connection.
-With EnerVista 745 software,users can easily set parameters,analyze data trends,and generate reports.
2.Technical parameters
Working environment:-40°C to+60°C(operating),-40°C to+80°C(storage),humidity 90%(non-condensing).
Control power supply:90-300 V DC or 70-265 V AC(48-62 Hz),suitable for high control power scenarios.
Communication interface:front panel RS232,rear panel RS485/RS422,optional Ethernet(specific model required).
Size and weight:about 4.8 kg(including housing),compact design for easy installation.
3.Application scenarios
Power industry:transformer protection and management of substations and power plants.
Industrial field:equipment protection in high-load environments such as metallurgy,petrochemicals,and chemicals.
Special demand scenarios:occasions requiring high-speed response and precise monitoring,such as elevators and parking lot power systems.
4.Advantages and Features
High reliability:adopts dual winding/triple winding design,supports”2oo3″redundant logic,and meets SIL certification standards.
Easy maintenance:optical components are not in contact with water,reducing the need for cleaning;EnerVista 745 software simplifies the parameter configuration process.
Scalability:supports modular networking,can be seamlessly integrated with other relays,and adapt to complex system requirements.
