Diagnosis and Treatment Methods for Secondary Circuit Faults in Current Transformers

2025-10-23 15:50:45

Faults in the secondary circuit of a current transformer (CT) are often manifested as abnormal current or voltage signals, which can affect the normal operation of the system. First, check the cables, connectors, and insulation conditions of the secondary circuit to determine whether there is any physical damage. Next, use a digital multimeter to monitor the CT’s output signal in real time and analyze it in conjunction with the load condition to locate the fault point. Additionally, if any unusual noise or discharge sound is detected, the system should be shut down immediately for inspection.

Common faults include loose wiring and insulation aging. The following table provides reference items for inspection and corresponding treatment methods:

Through systematic diagnostic procedures and timely maintenance, the operational reliability of high-voltage equipment can be effectively improved, ensuring the electrical system operates safely and stably.