ABB REU615 – Voltage Protection and Control Relay

Product Overview

The REU615 is a versatile voltage protection and control relay designed for utility and industrial power distribution systems. It offers reliable voltage and frequency protection and is especially suitable for networks with distributed power generation. Additionally, the REU615 excels in voltage regulation applications.

As part of ABB’s Relion® product family and the 615 protection and control series, the REU615 delivers advanced functionality tailored to modern power system requirements.

Scope of Application

• Voltage and frequency protection

• Automatic voltage regulation of power transformers equipped with motor-driven on-load tap changers

Product Features

• Specifically designed for:

• Automatic and manual voltage regulation

• Busbar undervoltage and overvoltage supervision

• Load shedding and restoration

• Pre-configured standard setups for fast and easy installation, with options for customization

• Withdrawable plug-in unit allows quick installation and testing

• Large graphical display presenting customizable single-line diagrams (SLDs), accessible locally or via an intuitive web-browser-based HMI

• Extensive lifecycle services supporting long-term operation

Product Benefits

• Comprehensive protection and control functionalities, including:

• Busbar voltage supervision

• Load shedding and restoration

• Overfrequency and underfrequency protection for power generators and AC equipment

• Automatic voltage regulation of transformers with motor-driven on-load tap changers

• Optional arc protection and high-speed outputs (not available with automatic voltage regulator function)

• Supports IEC 61850 (Editions 1 & 2), including:

• High-availability Seamless Redundancy (HSR) and Parallel Redundancy Protocol (PRP)

• GOOSE messaging

• IEC 61850-9-2 LE for reduced wiring and supervised communication

• IEEE 1588 Version 2 support for high-accuracy time synchronization, maximizing substation-level Ethernet communication benefits

• Supports multiple communication protocols: Modbus, DNP3, and IEC 60870-5-103

The ABB REU615 relay offers a powerful combination of protection, control, and communication capabilities, making it ideal for enhancing the reliability and efficiency of modern power distribution networks.