ALSTOM LFCB102 differential relay

ALSTOM LFCB102 differential relay

Product Details Introduction

ALSTOM LFCB102 differential relay is a protective device used in power systems, typically for detecting and protecting differential faults in power systems. Differential relays compare two or more current signals to detect the presence of differential current, thereby determining whether there is a fault in the power system, such as phase to phase short circuit or ground fault.

Main features:

Differential protection: By comparing the currents from different current transformers, the differential current in the power system is detected to detect faults.

High sensitivity: able to detect small differential currents and respond promptly to fault situations.

Quick response: After fault detection, it can quickly trigger protective actions, cut off the faulty circuit, and prevent the accident from expanding.

Self diagnostic function: equipped with self checking function, able to monitor its own working status and ensure reliable operation.

Multiple protection modes: Supports multiple differential protection modes, such as phase to phase differential protection, grounding differential protection, etc., to adapt to different application scenarios.

Application areas:

Power plant: used for differential protection of generators to ensure timely protection of power generation equipment in case of faults.

Substation: Used for transformer differential protection, protecting transformers from internal faults.

Transmission line: used for differential protection of transmission lines to ensure the safe operation of transmission lines.

Industrial facilities: Power protection systems used in large industrial facilities to ensure the stability and safety of the power system.

Distribution network: used for differential protection of distribution transformers and distribution lines to prevent local fault propagation.

Specific functions:

Current comparison: Real time comparison of current values at different measurement points to detect differential current.

Fault diagnosis: Determine whether there is a fault based on the set differential current threshold.

Action command: Upon detecting a fault, issue a protective action command to cut off the faulty circuit.

Alarm function: When a fault or abnormal situation is detected, an alarm signal is issued to prompt the operator to check the system.

Data recording: Record fault events and operating status for easy fault analysis and maintenance management.

Precautions for use:

Correct wiring: Ensure that the wiring of the current transformer and relay is correct to avoid misoperation.

Regular testing: Regularly test differential relays to ensure their sensitivity and reliability.

Environmental requirements: The installation environment should comply with the requirements of the product manual, avoiding adverse effects of moisture, corrosive gases, etc. on the equipment.

Parameter setting: Reasonably set the differential current threshold and protection mode according to the actual application scenario.

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