REF611 is a dedicated feeder protection relay designed for the protection, control, measurement, and supervision of utility substations and industrial power systems.The relay is available with directional or non-directional overcurrent and earth-fault protection. Directional earth-fault protection is suitable for isolated-neutral or compensated networks, while non-directional protection is intended for directly or low-impedance earthed systems.REF611 is part of ABB’s Relion® family and the 611 protection and control series
Technical Specifications
Directional/non-directional overcurrent & earth-fault protection
Preconfigured functions for feeder protection
Delivered preconfigured and factory-tested
Self-healing HSR/PRP communication with optional second Ethernet
Compact design for new or retrofit installations
Withdrawable plug-in unit for fast installation/testing
Web-based HMI with visual I/O matrix
Standard application-specific configurations
Supports IEC 61850 Ed.1 & Ed.2 + GOOSE messaging
Suitable for utility and industrial distribution networks
Preconfigured functions for feeder protection
Delivered preconfigured and factory-tested
Self-healing HSR/PRP communication with optional second Ethernet
Compact design for new or retrofit installations
Withdrawable plug-in unit for fast installation/testing
Web-based HMI with visual I/O matrix
Standard application-specific configurations
Supports IEC 61850 Ed.1 & Ed.2 + GOOSE messaging
Suitable for utility and industrial distribution networks
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