ABB REC670 1MRK002814-AC is an advanced spacer layer measurement and control protection device, which plays a crucial role in power systems, mainly used to monitor and control the spacing between power equipment. The REC670 1MRK002814-AC unit serves a wide range of power systems and industrial automation with its high-performance three-phase AC contactors, especially for power systems with series compensation or high voltage direct current transmission (HVDC).

The modular design of the device makes it easy to install and maintain, while meeting international standards to ensure quality and reliability. It integrates several algorithms, including two differential principles, and is suitable for power systems with low impedance ground to reliably detect various ground faults in the area. The REC670 1MRK002814-AC device also has the ability to quickly detect and correctly remove various developmental or transformational faults, prevent the occurrence of power failures by monitoring and controlling the interval between different equipment (such as circuit breakers, isolation switches, etc.), and ensure the stable operation of the power system.

REC670

The input and output hardware modules of the ABB REC670 1MRK002814-AC device enable it to meet the need for differential protection in all forms of single bus, double bus with or without bypass bus connections, double circuit breaker connections and one and a half circuit breaker connections. In addition, it also provides a complete busbar protection, in addition to the differential protection function, the device built-in flexible dynamic area automatic selection, which enables the device to dynamically connect CT to different busbar protection areas, and at the same time to achieve busbar protection and circuit breaker failure trip selectivity and isolation switch and circuit breaker status monitoring and other functions.

ABB is the world’s leading provider of electrical and automation technology solutions. Its products and services cover the whole process of power generation, transmission and distribution, and provide customers with a full range of solutions. The application of the REC670 1MRK002814-AC device can significantly improve the safety, stability and reliability of the power system, and is an indispensable and important part of the power system