Product Description

Overview

The REF630 from ABB’s Relion 630 series is a high-performance feeder protection and control relay designed for utility and industrial power distribution. It integrates protection, control, measurement, and supervision functions within a single device, supporting radial, looped, and meshed networks. The relay is fully adaptable to varying feeder configurations, including single or double busbars, and accommodates multiple switchgear elements such as breakers, disconnectors, and earthing switches.

Key Features

Protection Functions

• Overcurrent protection with multiple stages and directional/non-directional capabilities

• Comprehensive earth-fault protection, including admittance-based detection for compensated, isolated, or high-impedance earthed networks

• Integrated fast fault location algorithm for short-circuits and earth faults

• Voltage and frequency monitoring with configurable over/under thresholds

Control and Monitoring

• Management of up to 14 primary devices including circuit breakers and disconnectors

• Customizable interlocking logic for secure switching operations

• Circuit breaker condition monitoring including trip circuit supervision, gas pressure status, and mechanical wear detection

Communication & Integration

• Native support for IEC 61850 (Edition 1 and 2), Modbus, DNP3, and IEC 60870-5-103

• Ethernet redundancy via PRP and HSR for mission-critical reliability

• Expandable analog inputs/outputs: 8 RTD/mA inputs, 4 mA outputs for sensor integration

User Interface

• Large, graphical HMI displaying single-line diagrams, measurements, and alarms

• Detachable HMI for flexible panel installations

• Configurable logic programming via PCM600 based on IEC 61131-3 standard

Technical Specifications

Applications

Ideal for medium- and low-voltage distribution networks, substations, and industrial power systems requiring integrated feeder protection, control, and monitoring. Supports systems with distributed generation and complex switching configurations.

FAQ

Q: Can REF630 manage multiple breakers and disconnectors?
A: Yes, it can control up to 14 primary devices including breakers and disconnectors.

Q: Does REF630 support IEC 61850?
A: It natively supports IEC 61850 Editions 1 and 2, enabling GOOSE messaging and SCADA integration.

Q: Is there provision for analog sensor inputs?
A: Yes, it supports 8 RTD/mA inputs and 4 mA outputs for temperature and other analog monitoring.

Q: Can it detect high-impedance earth faults?
A: Yes, the admittance-based earth fault function ensures sensitive and selective detection in various network types.