产品介绍

基本信息:REA101-AAAG ABB 电弧保护继电器 库存现货

电弧保护继电器REA101及其扩展单元REA103和REA105设计用于中低压开关柜的保护。中央单元类型REA101独立或与扩展单元REA103和REA105一起工作。这些扩展单元可以增加传感器纤维的数量，从而扩大要保护的区域。

在电弧情况下，通过检测检测电弧的传感器光纤所覆盖的区域，可以快速定位故障位置。扩展单元REA103和REA105的设计几乎相同。单元之间的主要区别在于，REA105提供了两个快速跳闸输出，能够打开，例如，总线耦合器或双工馈线的两个断路器。这样就实现了选择性脱扣。电弧保护继电器REA101具有两个输出端口，每个输出端口最多可连接5个扩展单元。

特性

·三相过流功能

·用于电弧检测的环形或径向传感器光纤·2高速半导体输出跳闸

·跳闸继电器输出

·2个RJ45接口，用于连接扩展单元

·2光连接器快速开/关信号传输之间的中央单位·断路器故障保护，即高电平断路器延迟输出

·自我监控单元，用于监控传感器光纤，工作电压和中央单元和扩展单元之间的电缆·必须始终遵守国家和地方的电气安全法规。

·即使断开辅助电压，连接器上也可能出现危险电压。设备的框架必须小心接地。

·只有合格的电工才能进行电气安装。

·传感器纤维必须按照传感器纤维制造商给出的说明进行处理。

·设置和配置更改必须在断开辅助电源电压(Uaux)的情况下完成。如果改变所连接的电源电压，可能会发生故障。

Product introduction

Basic information :REA101-AAAG ABB arc protection relays in stock

Arc protection relays REA101 and its expansion units REA103 and REA105 are designed for protection of low and medium voltage switchgear. The central unit type REA101 works alone or with the expansion units REA103 and REA105. These expansion units can increase the number of sensor fibers, thereby expanding the area to be protected.

In the case of an arc, the fault location can be quickly located by detecting the area covered by the optical fiber of the sensor that detects the arc. The expansion units REA103 and REA105 are almost identical in design. The main difference between the units is that the REA105 offers two fast trip outputs that are capable of opening, for example, two circuit breakers for a bus coupler or duplex feeder. This enables selective tripping. The arc protection relay REA101 has two output ports, each of which can be connected to up to 5 expansion units.

peculiarity

· Three-phase overcurrent function

· Ring or radial sensor fiber for arc detection ·2 high-speed semiconductor output trip

· Tripping relay output

·2 RJ45 ports for connecting expansion units

·2 Optical connector fast on/off signal transmission between the central unit · circuit breaker fault protection, that is, high level circuit breaker delay output

Self-monitoring units for monitoring sensor fiber, operating voltage, and cables between the central and expansion units must always comply with national and local electrical safety regulations.

· Dangerous voltages may occur on the connector even if the auxiliary voltage is disconnected. The frame of the device must be carefully grounded.

· Only qualified electricians can perform electrical installation.

· Sensor fibers must be handled according to the instructions given by the sensor fiber manufacturer.

Setup and configuration changes must be made with the auxiliary power supply voltage (Uaux) disconnected. Failure may occur if the connected power supply voltage is changed.

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