ABB RED670 Protective Relay

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• • • 1. Product Overview

      The ABB RED670 is an advanced digital protection relay from the Relion 670 series, designed for protection of lines, transformers, generators, and busbars in medium- and high-voltage systems. RED670 integrates overcurrent, differential, distance, earth-fault, and voltage protection functions, supporting multiple communication protocols (IEC 61850, Modbus, DNP3) for intelligent monitoring, automation, and event logging. It is widely used in power transmission, distribution, and industrial networks.

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      2. Technical Specifications

      • Model: RED670

      • Series: Relion 670 Series

      • Application: Medium and high-voltage distribution systems

      • Protection Functions: Overcurrent, differential, distance, over/under voltage, earth-fault, synchro-check, breaker control

      • Analog Inputs: Up to 16 current / 8 voltage channels

      • Digital Inputs/Outputs: 24 digital inputs / 16 digital outputs

      • Communication Protocols: IEC 61850, Modbus RTU/TCP, DNP3, Profibus

      • Display & Operation: Color LCD screen with rotary knob and buttons

      • Event & Fault Recording: ≥ 512 events and fault records with time stamp

      • Operating Conditions: -25°C ~ +70°C; Storage -40°C ~ +85°C

      • Protection Class: IP54 (panel-mounted)

      • Dimensions (H×W×D): ~144 × 144 × 215 mm

      • Supply Voltage: AC/DC 24–250 V

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      3. Features & Advantages

      1. Comprehensive protection — Line, transformer, generator, and busbar protection in a single device.

      2. Intelligent monitoring and control — IEC 61850 communication enables remote monitoring, measurement, and automation.

      3. High reliability and stability — Suitable for complex industrial grids and harsh environments, strong interference immunity.

      4. Flexible configuration and expandability — Inputs/outputs and protection logic configurable to meet user needs.

      5. Event and fault recording — Built-in timestamped logging for fault analysis and maintenance.

      6. User-friendly interface — Color LCD for real-time monitoring, status display, and parameter settings.

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      4. Typical Applications

      • Power transmission and distribution line protection

      • Transformer protection and monitoring

      • Generator protection

      • Busbar and industrial grid protection

      • Power automation systems and SCADA integration

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      5. Precautions

      • Installation and commissioning must be performed by qualified personnel.

      • Ensure supply voltage, current, and grounding comply with RED670 specifications.

      • Set protection values and logic according to system characteristics to avoid false trips or failure to trip.

      • Regularly inspect the relay, communication, and wiring to ensure reliable operation.

      • Take protective measures in high temperature, humid, or high vibration environments.

      • Backup configuration before firmware or parameter updates to prevent data loss.

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