ABB REX521BBHGLB01C 馈电保护继电器

描述

REX 521 馈电保护继电器为您的中压网络提供高效的保护、测量、监控和基本控制功能。REX 521 的典型应用包括隔离中性点、谐振接地、固体接地和电阻接地系统中的进线和出线馈线。这款先进的继电保护装置完善了 ABB 从基本保护继电器到智能馈线终端的一系列解决方案，适用于配电系统应用。REX 521 为您的网络提供标准保护功能，如三相过流、非定向和定向接地故障、热过载保护和相位不连续保护。此外，继电器还能通过测量谐波来监控网络中的电能质量。

主要功能

过流保护：提供三级三相非定向过流保护，确保在电流异常时能及时切断电路，防止设备损坏。

接地故障保护：具有三级非定向接地故障保护功能，有效应对接地故障，确保电力系统的安全运行。

其他保护功能：包括三相不连续保护、三相电缆热保护、三相变压器浪涌和电机启动电流检测等，全面保护电力系统免受各种故障的影响。

监控和测量功能

通电电流输入回路监控：实时监控电流输入回路的状态，确保电路正常运行。

电流波形畸变测量：可测量电流波形的畸变程度，为电力系统的稳定性和安全性提供重要参考。

三相电流和中性线电流测量：精确测量三相电流和中性线电流，为电力系统分析和优化提供依据。

控制和指示功能

断路器控制： 提供带指示的断路器控制功能，可实现断路器的远程或本地控制。

锁定功能： 提供锁定功能，防止误操作导致电力系统故障。

对象指示和逻辑控制位置选择器：方便用户快速定位和操作电力系统中的每个对象。

通信和接口

IEC 60870-5-103/LON/SPA 通信： 支持多种通信协议，便于与电力系统中的其他设备进行数据交换和远程监控。

多语言用户界面： 提供多语言用户界面，方便不同国家和地区的用户使用。

机械尺寸和安装

ABB REX521BBHGLB01C 馈电保护继电器的机械尺寸适中，宽度为 148.8 mm（19'机架的 1/3），机架高度为 265.9 mm（6U），机箱深度为 235 mm。因此，它可以方便地安装在各种电力系统中，以满足不同的安装要求。

产品特点

高性能：采用高性能微处理器和先进的控制算法，可实现快速、准确的控制和监测，提高生产效率和产品质量。

模块化设计： 方便用户配置和扩展，提高了系统的灵活性和可维护性。

易于集成： 提供标准的通信接口和协议，方便用户与其他设备集成，实现无缝连接。

可靠性高： 采用优质材料和先进技术，可靠性和稳定性高，可在恶劣的工作环境下稳定运行。

易于使用： 提供简单的界面和易于操作的软件，方便用户安装和使用。同时，模块还具有自诊断功能，可帮助用户快速定位故障并进行维护。

良好的可扩展性：可与其他 ABB 模块和设备无缝集成，方便用户构建大型自动化控制系统。

English Introduction

ABB REX521BBHGLB01C Feeder Protection Relay

DESCRIPTION

The REX 521 Feeder Protection Relay provides your medium-voltage network with efficient protection, measuring, supervision and basic control functions. The typical REX 521 appli cations include incoming and outgoing feeders in isolated neutral, resonant earthed, solidly earthed and resistively earthed systems.This state-of-the-art protection relay comple ments the ABB range of solutions from basic protection relays to intelligent feeder terminals for distribution system applications. REX 521 provides your network with standard protection functions such as three-phase overcurrent, non-directional and directional earth-fault, thermal overload protection and phase discon tinuity protection. Additionally, the relay supervises power quality in your network by measuring harmonics.

Main Functions

Overcurrent protection: provide three-stage three-phase non-directional overcurrent protection to ensure that the circuit can be cut off in time when the current is abnormal, preventing equipment damage.

Ground fault protection: with three-stage non-directional ground fault protection function, effective response to ground faults, to ensure the safe operation of the power system.

Other protection functions: including three-phase discontinuity protection, three-phase cable thermal protection, three-phase transformer surge and motor start-up current detection, etc., comprehensively protect the power system from various faults.

Monitoring and Measuring Functions

Energised current input loop monitoring: real-time monitoring of the status of the current input loop to ensure the normal operation of the circuit.

Current waveform distortion measurement: able to measure the degree of distortion of the current waveform, providing important reference for the stability and safety of the power system.

Three-phase current and neutral line current measurement: accurately measure three-phase current and neutral line current, providing a basis for power system analysis and optimisation.

Control and indication function

Circuit breaker control: Provide circuit breaker control function with indication, which can realise remote or local control of circuit breakers.

Locking function: Provides locking function to prevent misoperation leading to power system failure.

Object indication and logical control position selector: facilitates users to quickly locate and operate each object in the power system.

Communication and interface

IEC 60870-5-103/LON/SPA Communication: Supports a variety of communication protocols to facilitate data exchange and remote monitoring with other devices in the power system.

Multi-language user interface: Provide multi-language user interface, convenient for users in different countries and regions.

Mechanical dimensions and installation

The ABB REX521BBHGLB01C Feeder Protection Relay has moderate mechanical dimensions, with a width of 148.8 mm (1/3 of a 19’ rack), a rack height of 265.9 mm (6U), and a case depth of 235 mm. This allows it to be easily installed in a variety of power systems to meet different installation requirements.

Product Features

High performance: adopting high-performance microprocessor and advanced control algorithm, it can realise fast and accurate control and monitoring, and improve production efficiency and product quality.

Modular design: It is convenient for users to configure and expand, which improves the flexibility and maintainability of the system.

Easy Integration: Provide standard communication interface and protocol, which is convenient for users to integrate with other equipments and achieve seamless connection.

High reliability: Made of high-quality materials and advanced technology, it has high reliability and stability, and can operate stably under harsh working environment.

Easy to use: Provides simple interface and easy-to-operate software, which is convenient for users to install and use. At the same time, the module also has a self-diagnostic function, which can help users quickly locate faults and maintenance.

Good scalability: can be seamlessly integrated with other ABB modules and equipment, which is convenient for users to build a large-scale automation control system.