ABB REC670 1MRK004814-AC

2. Functional Features

• Modular Design: Allows for easy installation and maintenance. It adheres to international standards, ensuring high – quality and reliable performance.
• Integrated Algorithms: Incorporates multiple algorithms, including two differential principles. This enables it to detect various internal ground faults in low – impedance grounded power systems. It also has the ability to quickly detect and correctly cut off developing or converting faults by monitoring and controlling the intervals between different devices like circuit breakers and isolators.
• Flexible Dynamic Zone Selection: In addition to differential protection, the device has built – in flexible dynamic zone automatic selection. This feature enables it to dynamically connect CTs to different bus – bar protection zones, and simultaneously achieve functions such as bus – bar protection, circuit breaker failure tripping selectivity, and status monitoring of isolators and circuit breakers.

3. Application Scenarios

• Substation Automation Systems: It is mainly used in substation automation systems to monitor and control the intervals between different devices such as circuit breakers and isolators, ensuring the safe and reliable operation of the power system.
• Power Transmission Line Monitoring and Management: Applicable for monitoring and managing power transmission lines, as well as in the automation control of distribution networks. It is especially suitable for power systems with series compensation or high – voltage direct – current transmission (HVDC).

4. Supported Industrial Protocols

• It supports communication protocols like Modbus and Profibus, which facilitate remote monitoring and control, thus enhancing the automation level of the power system.

5. Expandability

• The input and output hardware modules of the REC670 1MRK004814 – AC device enable it to adapt to various wiring forms of bus – bar protection, such as single – bus, double – bus with or without bypass bus, double – circuit – breaker wiring, and one – and – a – half – circuit – breaker wiring. This indicates its good expandability to meet different power system configurations.

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