ABB REB670 1MRK002820-AC Busbar Protection Relay

The ABB REB670 1MRK002820-AC Busbar Protection Relay is an advanced and reliable solution for protecting medium- and high-voltage busbar systems. As part of ABB’s Relion® 670 series, the REB670 provides fast, selective, and stable protection for complex busbar arrangements, ensuring operational continuity and safety in power systems. It supports single and double busbar configurations, transfer busbars, and breaker-and-a-half schemes, offering flexible application in utility and industrial networks. The device integrates advanced communication capabilities and complies with IEC 61850 standards, enabling seamless integration into modern digital substations.

Product Specifications

Product Applications

• Busbar Protection: Provides fast differential protection for single, double, and transfer busbar systems.

• Industrial Power Systems: Protects critical busbar sections in oil & gas, mining, and heavy industries.

• Utility Substations: Ensures safe operation and continuity of service in medium- and high-voltage substations.

• Breaker Failure Protection: Integrated logic for detecting and isolating failed breakers.

• Digital Substations: Fully compatible with IEC 61850 communication for modern substation automation.

• Backup Protection: Can serve as backup for line and transformer differential protection schemes.

Product Advantages

• Fast and Selective Protection: Provides extremely fast fault detection and clearing to minimize equipment damage.

• Flexible Configuration: Supports various busbar arrangements, including breaker-and-a-half schemes.

• High Integration: Combines multiple protection and control functions into a single device, reducing panel space.

• IEC 61850 Compliance: Ensures seamless communication and interoperability in digital substations.

• Advanced Diagnostics: Built-in monitoring and self-testing for improved reliability and preventive maintenance.

• Scalable Design: Can be customized for small or large busbar systems without hardware changes.

• Robust Performance: Designed for harsh industrial and utility environments with wide temperature tolerance.

FAQ

1. What types of busbar configurations can the REB670 support?

   The REB670 supports single busbar, double busbar, transfer busbar, and breaker-and-a-half configurations, making it suitable for complex substation layouts.

2. Does the relay provide fast fault clearance for high-current faults?

   Yes, the REB670 features ultra-fast differential protection algorithms to clear faults rapidly and protect equipment integrity.

3. Can the REB670 be integrated with IEC 61850-based digital substations?

   Absolutely. It is fully IEC 61850 compliant, supporting GOOSE messaging and sampled values for real-time communication.

4. What current transformer (CT) input ratings does the relay accept?

   The device supports standard 1 A and 5 A CT inputs for flexible application in different systems.

5. Is the relay capable of handling breaker failure protection?

   Yes, the REB670 includes integrated breaker failure detection and trip logic to isolate faulty breakers effectively.

6. Does the REB670 support remote configuration and monitoring?

   Yes, it can be remotely configured, monitored, and tested using ABB’s PCM600 software via standard communication protocols.

7. What voltage supply range is supported by the device?

   The REB670 supports a wide auxiliary voltage range from 24 V DC to 250 V DC and 48 V AC to 240 V AC.

8. Can the relay provide backup protection for transformers or lines?

   Yes, it can serve as backup differential protection for transformers and transmission lines, enhancing overall system reliability.

9. Is the relay suitable for harsh environmental conditions?

   The REB670 is built for industrial and utility-grade environments, operating reliably in temperatures from -25°C to +70°C.

10. What communication protocols are available for integration?

    The device supports IEC 61850, Modbus, DNP3, and IEC 60870-5-103 for versatile integration into various automation systems.