REL551 1MRK002480-AE Line Differential Relay

Product manual:

REL551 1MRK002480-AE is a line differential relay launched by ABB,
Specially designed for line protection in power systems. This relay is used to protect transmission lines,
Capable of real-time detection and rapid response to line faults, especially short-circuit faults, ensuring the safety and stability of the power system.

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.

REL551 1MRK002480-AE provides efficient and accurate line differential protection,
Ensure the rapid response of the power system in the event of a malfunction, guaranteeing the stability of power supply and the safety of equipment.

Product details picture:

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