REX521BBHGLB01C 电动机保护继电器

Description

REX521BBHGLB01C 电动机保护继电器

ABB的REX521系列中的REX521BBHGLB01C是一款高性能、高可靠性的馈线和电动机保护继电器。这款产品集合了保护、测量、录波、监视和控制功能，适用于中性点不接地系统、中性点直接接地系统、小电阻接地系统和谐振接地系统中的中压馈线及大中型三相交流电动机的保护。

具体来说，REX521BBHGLB01C的保护功能包括相间过流、接地、过电压、低电压、电机各种保护及频率保护元件等。此外，它还具有电流、电压、频率、有功和无功功率、功率因数、电能等测量功能，以及断路器触头电器磨损监测、跳闸回路监视等功能。

REX521BBHGLB01C内部集成了一个故障录波模块，有五个模拟量输入通道和多达十六个开关量通道，以COMTRADE格式完整记录故障状态。同时，它还具有自诊断功能，可以确定继电器的完好状况，如果继电器不能正常工作，它可以在继电器无法正常工作之前发出告警信号，同时闭锁所有保护功能和输出接点。

这款保护继电器具有两个独立的通讯端口，RS485接口可以支持MODBUS RTU/ASCII、DNP 3.0及SPA协议，通讯波特率最大可至19.2Kpbs。光纤口支持IEC60870-5-103、MODBUS RTU/ASCII、DNP3.0、LON及SPA协议。这些端口可以方便用户简易快速地接入各类厂家的后台系统。

REX521BBHGLB01C的人机界面包括4*8字符液晶显示及方向导航键盘，三个LED状态指示和8个自由定义的指示灯。此外，这款保护继电器还专门为中国市场推出了具有全中文操作界面的配置方案，可分别适用于馈线和电动机保护的需要。

REX521BBHGLB01C 电动机保护继电器

The REX521BBHGLB01C in ABB’s REX521 family is a high-performance, highly reliable feeder and motor protection relay. This product combines protection, measurement, wave recording, monitoring and control functions for neutral ungrounded systems, neutral direct grounding systems, small resistance grounding systems and resonant grounding systems of medium voltage feeders and large and medium-sized three-phase AC motor protection.

Specifically, the protection functions of REX521BBHGLB01C include phase-to-phase overcurrent, grounding, overvoltage, low voltage, various motor protection and frequency protection elements. In addition, it also has current, voltage, frequency, active and reactive power, power factor, electrical energy and other measurement functions, as well as circuit breaker contact electrical wear monitoring, tripping circuit monitoring and other functions.

The REX521BBHGLB01C integrates a fault recording module with five analog input channels and up to sixteen switching channels to record the fault status completely in COMTRADE format. At the same time, it also has a self-diagnostic function, can determine the good condition of the relay, if the relay does not work properly, it can send an alarm signal before the relay does not work properly, while locking all protection functions and output contacts.

This protective relay has two independent communication ports, RS485 interface can support MODBUS RTU/ASCII, DNP 3.0 and SPA protocols, communication baud rate up to 19.2Kpbs. The fiber port supports IEC60870-5-103, MODBUS RTU/ASCII, DNP3.0, LON, and SPA protocols. These ports can facilitate users to access the background system of various manufacturers easily and quickly.

The human-machine interface of the REX521BBHGLB01C includes a 4*8 character LCD display and directional navigation keyboard, three LED status indicators and eight freely defined indicators. In addition, this protective relay has been specially introduced for the Chinese market with a fully Chinese operating interface configuration scheme, which can be adapted to the needs of feeder and motor protection respectively.