ABB REF620 DIS0008 Feeder protection and control

ABB REF620 – Feeder Protection and Control Relay

Part of the Relion® 620 Series

Product Overview

The ABB REF620 is a compact, dedicated feeder management relay designed for protection, control, measurement, and supervision in utility and industrial medium-voltage power distribution systems. It is suitable for radial, looped, or meshed networks, with or without distributed generation.

As a member of ABB’s Relion® family, the REF620 integrates advanced protection and control functionality into a single, scalable unit.

Scope of Application

• Protection for incoming and outgoing feeders in medium-voltage substations

Key Benefits

• Comprehensive functionality using either conventional instrument transformers or sensors

• Scalable and configurable to meet specific application needs

• Withdrawable plug-in unit for fast installation, maintenance, and testing

• Large graphical display with support for customizable single-line diagrams (SLDs)

• Accessible HMI via a web-browser interface

• Backed by ABB's extensive life-cycle service offering

Key Features

• Wide-ranging protection and control for feeders

• Advanced earth-fault protection, including multi-frequency admittance-based protection for high sensitivity and selectivity

• Optional feature packages including:

• Fast fault location for short circuits and earth faults

• Interconnection protection for distributed energy sources

• Capacitor bank, basic motor, and arc protection functionalities

• Native support for IEC 61850 Editions 1 and 2, with:

• HSR and PRP network redundancy

• GOOSE messaging

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

• Communication protocol support:

• Modbus

• DNP3

• IEC 60870-5-103

• Time synchronization methods include:

• IEEE 1588 V2 Precision Time Protocol (PTP)

• SNTP, IRIG-B, and others