What Should I Do If There Is A Malfunction in The Current Transformer During Operation

When a current transformer malfunctions during operation, corresponding measures need to be taken in a timely manner to ensure the normal operation of the power system and the stability of the power supply function. Here are some common faults and their solutions:

1、 Common faults and causes

Overheating during work

Reason: It may be caused by short circuit, moisture, overload, or incorrect wiring of the secondary coil of the current transformer.

Handling measures:

Change the damp environment and ensure that the transformer is in a dry state.

Replace the transformer that matches the load to avoid overload operation.

Correct incorrect wiring to ensure correct and error free circuit connections.

Smoking or emitting a foul odor inside

Reason: Usually caused by severe overheating or damage to internal components.

Solution: Immediately stop using and conduct a detailed inspection. If necessary, replace the current transformer with a new one.

Loose coil screws, short circuits between turns or layers

Reason: It may be caused by vibration, looseness, or aging of insulation materials.

Solution: Tighten the coil screws, repair or replace the insulation material to prevent short circuits from occurring.

Internal discharge, abnormal sound, or sparks generated between the leads and the casing

Reason: It may be caused by insulation damage, poor contact of leads, or damage to the casing.

Solution: Check and repair the damaged insulation parts, ensure good insulation between the leads and the casing, and eliminate discharge phenomena.

Serious oil leakage or low oil level in oil type current transformers

Reason: It may be due to poor sealing, oil level gauge malfunction, or poor oil quality.

Solution: Check and repair the oil leakage area, replenish qualified insulation oil, and ensure the oil level is normal.

2、 General processing procedure

Observation phenomenon: Firstly, observe the fault phenomena of the current transformer, such as overheating, smoking, discharge, etc.

Determine the cause: Determine the specific cause of the malfunction based on the symptoms and relevant knowledge.

Take measures: Take corresponding measures based on the identified reasons, such as replacing transformers, tightening screws, repairing insulation, etc.

Test verification: After handling the fault, test and verify the current transformer to ensure that it returns to normal working condition.

Record archiving: Record the fault symptoms, handling process, and results for future reference and analysis.

3、 Precautions

Safety first: When dealing with current transformer faults, it is essential to ensure personal safety and avoid dangerous situations such as electric shock.

Professional operation: For complex fault handling, professional personnel should be hired to ensure the safety and effectiveness of the handling process.

Regular inspection: Regularly inspect and maintain the current transformer, promptly detect and handle potential faults, and avoid the expansion of faults and serious consequences.

Through the above measures, various faults that occur during the operation of current transformers can be effectively addressed, ensuring the stable operation of the power system.