Although the transformer is a highly reliable electrical device, it can also fail, such as overcurrent in the current transformer and breakdown in the voltage transformer. The following are some common transformer faults and maintenance methods:

1. The current transformer has overcurrent

The overcurrent of the current transformer is generally caused by excessive load or short circuit. At this time, it is necessary to check whether the load exceeds the rated value of the transformer, and deal with the short circuit problem in time.

2. Voltage transformer breakdown

The breakdown of voltage transformers is generally caused by insulation damage or pollution. At this time, cleaning or replacement of insulation materials is required.

3. The transformer line connector is loose or in poor contact

The looseness or poor contact of the transformer line connector will cause the signal transmission of the transformer to be blocked or cause errors, so it is necessary to check whether the connector is firm and clean the contact surface.

4. Transformer core saturation

The saturation of the core of the transformer will lead to an increase in the measurement error. Therefore, it is necessary to regularly check the saturation of the core of the transformer and take measures to solve the problem, such as adjusting the magnetic flux of the transformer.

In order to ensure the normal operation of the transformer, regular maintenance is required. Generally include the following:

1. Regularly check whether the line connector of the transformer is loose or in poor contact, and clean the contact surface in time.

2. Regularly check the insulation status of the transformer, and clean or replace the insulation material.

3. Regularly check the saturation degree of the iron core of the transformer, and take measures to solve the problem.

4. Regularly check the rated value and accuracy of the transformer, and perform calibration and adjustment.

5. Regularly carry out protection and maintenance records, and deal with failures and abnormal situations in time.

In a word, the transformer is one of the important electrical equipment in the power system, and its normal operation is of great significance to the safe and stable operation of the power system. Therefore, when using and maintaining the transformer, it is necessary to fully understand its basic principles and applications, deal with faults in time, and carry out regular maintenance and repairs to ensure its normal operation.