ABB REF611 Feeder Protection and Control

Product Overview

The ABB REF611 is a specialized feeder protection and control device. It provides both directional and non-directional ground fault protection for diverse grid types. Directional protection is optimized for ungrounded or arc-suppression coil grids. Non-directional protection serves directly or low-impedance grounded systems. 

Technical Specifications

• Series: Relion® 611.

• Protection Types: Directional and Non-directional ground fault protection.

• Network Compatibility: Radial, Ring, Mesh, and Distributed Generation grids.

• Communication: Native IEC 61850 (Editions 1 & 2) including GOOSE.

• Redundancy: Self-healing ring support via HSR and PRP functions.

• User Interface: Web-based HMI with visual I/O matrices.

• Installation: Withdrawable (pull-out) design.

• Configuration: Pre-configured for busbar, feeder, motor, and voltage applications.

Key Features and Engineering Advantages

• Versatile Fault Protection: Handles complex grid grounding scenarios, ensuring sensitive fault detection regardless of the neutral point configuration.

• Efficient Commissioning: Pre-configured standard solutions allow engineers to skip complex logic programming and move straight to parameter input.

• Advanced Networking: Supports HSR (High-availability Seamless Redundancy) and PRP, creating a self-healing communication ring that prevents data loss.

• Advanced Web HMI: Features a powerful web interface with visual matrices, making it easy to map inputs and outputs without specialized software.

• Maintenance Friendly: The pull-out design allows for "hot-swap" style maintenance where the relay core can be tested while the housing remains wired.

• Compact Footprint: Specifically sized to fit into small cabinets or crowded renovation panels where space is a premium.