


Product Description
General Information
- Manufacturer: ABB
- Model/Part Number: REB670
- Model Type: Busbar Protection Relay
- Description: The ABB REB670 is a numerical busbar protection relay from ABB’s Relion 670 series, designed for high-speed and reliable protection of busbars in high-voltage and medium-voltage power systems. It offers advanced differential protection, including phase-segregated measurements, and supports complex busbar configurations such as single, double, and transfer bus arrangements. The REB670 also provides integrated control, monitoring, and communication features, making it suitable for modern substation automation systems.
Technical Specifications
Specification | Details |
---|---|
Type | Busbar Protection Relay |
Series | Relion 670 |
Protection Functions | Phase-segregated differential protection, zone-specific protection, breaker failure protection, end-fault protection |
Measurement | Current inputs for up to 24 bays (depending on configuration) |
Communication Protocols | IEC 61850, DNP3, Modbus, IEC 60870-5-103 |
Operating Speed | High-speed tripping (typically less than 1 cycle) |
Supply Voltage | 48–250 V DC (configurable) |
Digital Inputs/Outputs | Configurable inputs and outputs for control and signaling (varies by configuration) |
Operating Temperature | -25°C to +55°C |
Enclosure | IP40 (front), IP20 (rear) in standard mounting |
Application | Busbar protection in high-voltage and medium-voltage substations, complex bus configurations |