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Overview
The ABB RER620 is a high-performance protection and control relay for medium-voltage distribution feeders. It supports overhead lines and cable systems in both utility and industrial power networks. As a member of ABB’s Relion® family, it delivers reliability, flexibility, and seamless IEC 61850-based digital substation integration. Moreover, it provides comprehensive protection, control, measurement, and supervision for grounded and ungrounded distribution systems.
Technical Specifications
- Voltage Range: Up to 40.5 kV
- Frequency: 50/60 Hz
- Current Inputs: 1 A or 5 A
- Power Supply: 24–250 V DC / 48–240 V AC
- Display: Graphical LCD with local HMI
- Mounting: Drawout design, flush or surface mounting
- Operating Temperature: -40°C to +70°C
- Protection: IP54 front panel protection
- Compliance: IEC and ANSI standards
- Functions: Time and instantaneous overcurrent, negative sequence overcurrent, phase discontinuity, breaker failure, automatic loop restoration, voltage metering, and protection
