RED670 ABB Relion Microcomputer Integrated Protection Unit

Product Overview

The ABB RED670 belongs to the Relion 670 series, serving as a high-performance, intelligent microcomputer protection device specifically engineered for overhead lines and cables. It provides phase-segregated line differential protection for multi-terminal systems, managing up to five line ends with absolute selectivity. We supply this unit as 100% Brand New and Original, ensuring high-speed fault clearance and comprehensive monitoring for critical utility and industrial power networks.

Technical Specifications

Engineering Advantages

• Absolute Selective Fault Clearance: The RED670 operates without intentional time delays for internal faults. It instantly removes all types of short circuits and ground faults, protecting expensive primary equipment from thermal and mechanical stress during fault conditions.

• Superior Grounding Sensitivity: Advanced sensing algorithms allow the RED670 to detect extremely low fault currents. This capability ensures the detection of high-impedance grounding faults that traditional protection relays often miss, significantly improving network safety.

• Hardware-Driven Logic Management: The device incorporates a dual-position universal switch and a 32-bit selector switch managed directly via the Human Machine Interface (HMI). Operators can toggle functions like automatic reclosing from "input" to "exit" through the graphical UI, eliminating the need for external mechanical switches and complex rewiring.

• High-Integrity Communication Design: Optimized for modern substation automation, the RED670 features a built-in C37.94 interface. This allows secure, plug-and-play connection to standardized fiber optic communication devices, ensuring rapid recovery of communication channels and high-speed data exchange for differential logic.

FAQs

1. Can the RED670 protect complex line-transformer sets?

Yes. The RED670 features a highly extensible hardware architecture and a powerful protection library. It supports integrated protection for line-transformer and generator-transformer sets, making it a versatile solution for varied substation topologies.

2. How does the device handle auto-reclosing for different phases?

The RED670 manages single-phase, three-phase, or combined single/three-phase reclosing modes. You can select these modes directly through the HMI or remote command, and the device utilizes synchronous inspection functions to ensure safe re-energization.

3. Does the C37.94 interface require specialized ABB-only fiber equipment?

No. The RED670 uses standardized C37.94 optical fiber interfaces. This allows it to connect seamlessly to "off-the-shelf" communication equipment from multiple vendors, provided they adhere to the same international standard.

4. Is it possible to replace external mechanical switches with the RED670?

The internal 32-bit selector switch within the RED670 software architecture can replace traditional external mechanical selector switches. This simplifies panel design, reduces hardware failure points, and allows remote switching through your SCADA system.