The ABB REF615 is a feeder protection and control relay designed for utility substations and industrial power systems. It belongs to ABB’s Relion® product family and the 615 protection and control series.

Key Features

• Drawout design allows for easy maintenance.
• Provides comprehensive protection for feeders, including distance, overcurrent, and differential protection.
• Offers advanced metering and monitoring capabilities.
• Supports IEC 61850 communication for integration with substation automation systems.

Typical Applications

• Radial feeders
• Looped feeders
• Meshed feeders
• Industrial power systems
• Distributed generation applications

Technical Specifications

• Rated voltage: Up to 40.5 kV
• Rated current: Up to 5000 A
• Protection functions: Distance, overcurrent, differential protection, reclosing, and more
• Metering and monitoring functions: Active and reactive power, energy, voltage, current, and more
• Communication protocols: IEC 61850, Modbus RTU, DNP3