REL551 1MRK002480-AE Line Differential Relay

Product manual:

Main features:
Line differential protection: By comparing the current difference at both ends of the line, it detects the presence of faults, especially effective for short circuits and ground faults.
High sensitivity and fast response: With high sensitivity, it can quickly respond in the event of a power system failure, protecting equipment from damage.
Multiple protection functions:
Overcurrent protection: prevents overload or short circuit.
Grounding protection: provides protection against grounding faults.
Distance protection: Detect faults within a certain distance and respond accordingly.
Communication and Integration: Supports standard communication protocols such as IEC 61850, making it easy to integrate with other protective devices and automation systems.
Event recording and monitoring: Record historical fault events for easy fault analysis and diagnosis.
Flexible configuration: Configure different protection features according to the specific needs of the line.
Application scenarios:
Transmission line protection: widely used in high-voltage transmission lines, substations, distribution networks, and other occasions to protect critical power equipment.
Power system automation: Combining power automation systems to achieve intelligent protection and control.
Industrial and power plants: used for line protection in power plants and industrial power systems.

Product details picture:

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