Product Overview

The ABB REF610 is part of ABB’s Relion® 610 series and is specifically designed for feeder protection, motor protection, and voltage supervision in medium-voltage distribution networks. Tailored for both resistance-earthed and solidly earthed networks, the REF610 offers essential protection functions including overcurrent, earth fault, thermal overload, and phase discontinuity detection.

Additionally, it features multi-shot autoreclose functionality for overhead lines, which is essential for maintaining system stability by automatically re-energizing lines after a temporary fault. Optional arc protection can be added to further enhance safety. The relay is also known for its plug-in design, simplifying commissioning and maintenance.

Its compact footprint and rugged design make it suitable for marine, offshore, and industrial environments where space constraints and reliability are critical.

Note: The REF610 was discontinued in 2017, but it remains in use across many legacy systems and can still be serviced or replaced with newer Relion® models.

Technical Specifications

Typical Applications

The REF610 is widely used in medium-voltage distribution substations, especially in the following applications:

• Feeder Protection: Protection for incoming and outgoing feeders in substations.

• Overhead Line Protection: Featuring multi-shot autoreclose functionality to ensure reliability in the face of temporary faults.

• Motor Protection: Provides thermal overload and fault protection for industrial motor feeders.

• Marine & Offshore Platforms: Ideal for installations where space is limited, and ruggedness is critical, such as in marine or offshore environments.

Its modular design and versatility make it well-suited for retrofit projects, where legacy ABB equipment is still in operation.

Frequently Asked Questions (FAQ)

Q: What types of faults does REF610 detect?
A: It detects overcurrent, earth fault, thermal overload, and phase discontinuity.

Q: Is REF610 still available for purchase?
A: No, it was discontinued in 2017, but service and replacement options are available for existing installations.

Q: Can it be used in marine environments?
A: Yes, the REF610 is well-suited for marine and offshore installations due to its rugged design and compact form factor.

Q: What communication protocols are supported?
A: The REF610 supports IEC 60870-5-103, Modbus, and SPA communication protocols.

Q: What ABB series replaces REF610?
A: Newer Relion® models, such as REF615 and REF620, are recommended as replacements for the REF610.