REU610 CVVHCNR ABB继电器是一款多功能电压保护继电器，属于ABB Relion®产品家族中的610产品系列。以下是关于该继电器的详细信息和特点：

1. 应用和功能：
• REU610 CVVHCNR继电器专门应用于电压保护，为用户提供馈线、电动机和变压器等的保护、测量、监视和故障录波等功能。
• 该继电器集成了多个电压保护功能，包括两段过电压、两段欠电压和两段零序电压等，为各种类型的电压故障提供了完善的保护。
2. 技术规格：
• 可选择额定频率50/60Hz。
• 可选择两个常开/常闭信号输出接点，并可扩展到五个常开/常闭信号输出接点。
• 具有两个经电气隔离的开关量输入接点，也可扩展到五个开关量输入接点。
• 录波时间可达5秒（800Hz采样率），可记录四个模拟量通道和多达八个可由用户选择的开关量通道。
• 采样率可调整。
3. 通信和自检功能：
• 背板通讯模块可选择塑料光纤、组合光纤（塑料和玻璃光纤）或经RS-485接口的双绞线任一方式与系统通讯，支持的通讯协议有SPA-bus、IEC60870-5-103或Modbus（RTU/ASCII模式）。
• 可选择支持DNP3.0通讯协议的通讯模块与后台通讯，其接口为RS-485接口。
• 继电器内部电子元件和软件运行情况连续自检，一旦出现内部故障，将闭锁所有保护和输出接点。
4. 设计和安装：
• REU610采用插入式设计，有利于开关设备的调试，并且保证了插件的快速、安全插拔。
• 结构紧凑，适用于改型和小空间安装。
• 继电器要求有可靠的辅助电源以保证运行，辅助电源是反激式隔离三电平DC/DC变换器。
5. 认证和认证机构：
• 该继电器已通过KEMA认证其在海洋和离岸区域的使用，并通过了挪威船级社的认证。

The REU610 CVVHCNR ABB relay is a versatile voltage protection relay that belongs to the 610 family of ABB Relion® products. The following are the details and features of the relay:

Applications and Features:

The REU610 CVVHCNR relay is specifically designed for voltage protection, providing users with protection, measurement, monitoring and fault recording for feeders, motors and transformers.

The relay integrates multiple voltage protection functions, including two overvoltages, two undervoltages and two zero sequence voltages, providing perfect protection for various types of voltage failures.

Technical specifications:

Optional rated frequency 50/60Hz.

Two normally open/normally closed signal output contacts can be selected and can be extended to five normally open/normally closed signal output contacts.

It has two electrically isolated switching input contacts and can also be extended to five switching input contacts.

The wave recording time is up to 5 seconds (800Hz sampling rate), and four analog channels and up to eight user-selectable switching channels can be recorded.

The sampling rate can be adjusted.

Communication and self-check functions:

The backplane communication module can communicate with the system by either plastic fiber, combined fiber (plastic and glass fiber) or twisted pair cable through the RS-485 interface. Supported communication protocols include SPA-bus, IEC60870-5-103 or Modbus (RTU/ASCII mode).

The communication module that supports DNP3.0 communication protocol can be selected to communicate with the background, and its interface is RS-485 interface.

The operation of the internal electronic components and software of the relay is continuously self-checked, and all protection and output contacts are locked in case of internal failure.

Design and installation:

The REU610's plug-in design facilitates switchgear commissioning and ensures quick and secure insertion and removal of the plug-in.

Compact structure, suitable for modification and small space installation.

Relays require a reliable auxiliary power supply to ensure operation, and the auxiliary power supply is a flyback isolated three-level DC/DC converter.

Certification and Certification bodies:

The relay has been certified by KEMA for use in Marine and offshore areas and is certified by the Norwegian Register of Shipping.