ABB 1MRK002814-AC

2. Function Features

• Protection Algorithms: It integrates multiple algorithms, including two differential principles, suitable for low – impedance – grounded power systems. It can reliably detect various internal grounding faults.
• Fault Detection and Isolation: It has the ability to quickly detect and correctly cut off various developing or converting faults. By monitoring and controlling the intervals between different devices (such as circuit breakers and disconnectors), it prevents power failures and ensures the stable operation of the power system.
• Dynamic Zone Selection: Besides the differential protection function, the device has a built – in flexible dynamic zone automatic selection. This allows the device to dynamically connect CTs to different busbar protection zones, and simultaneously achieve busbar protection, selective circuit – breaker failure tripping, and status monitoring of disconnectors and circuit breakers.
• Control and Monitoring: It can be used for single – device handling of multi – circuit – breaker/multi – interval control, and can integrate control and backup protection functions. It also supports optional single – phase or three – phase tripping and reclosing functions, as well as horizontal communication of digital and analog data between devices.

3. Application Scenarios

• Power Systems: It is mainly used for monitoring and controlling the intervals between power equipment in power systems. It is especially suitable for power systems with series compensation or high – voltage direct – current transmission (HVDC). It can be applied in various power systems and industrial automation fields to protect and control key equipment and components, improving the stability and reliability of the power system.

4. Industrial Protocols (not provided in original information, assumed general ones)

• In power system applications, it may support protocols such as IEC 61850, which is widely used in substation automation for communication between different intelligent electronic devices. It may also support Modbus for communication with other industrial devices, allowing for data exchange and control.

5. Expandability

• Thanks to its modular design, the ABB REC670 1MRK002814 – AC has good expandability. New modules can be added according to different application requirements, such as additional input/output modules for connecting more devices, or modules for enhanced communication functions to adapt to a more complex power system network. This modular structure makes it easier to upgrade and expand the device’s capabilities to meet the changing needs of power systems.

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