30/04/2025
There are several main reasons for the burning of control transformers:
1. Overload
When the load on the transformer exceeds its rated capacity, the transformer temperature will rise, which will then trigger the overload protector to operate. If the protector fails or the operation is wrong, the transformer will burn out.
2. Short circuit
Short circuit refers to a direct low-impedance path generated by the winding or conductor in the transformer, causing the transformer to generate excessive current. The magnitude of the short-circuit current depends on the short-circuit position and circuit parameters. If the short-circuit protection device of the transformer fails or the operation is wrong, the transformer will also burn out. Therefore, when installing and maintaining the transformer, it is important to pay attention to the integrity and correctness of the short-circuit protection.
3. Insulation aging
Insulation aging refers to the long-term influence of the insulation material in the transformer on the harsh environment such as high temperature and high humidity, which causes the insulation material to break or crack, resulting in a decrease in insulation performance, resulting in leakage and breakdown. If the insulation material in the transformer is severely aged, electrical failures are likely to occur, and even cause the transformer to burn out.
The above are the main reasons for the burning of transformers, but in actual operation, there are many other factors, such as improper operation and quality problems. Therefore, when using and maintaining the transformer, you must strictly follow the operating procedures and conduct regular inspections and maintenance. Especially when using the transformer in a high temperature, humid, and dusty environment, you must pay more attention to the maintenance and care of the transformer.
In short, the transformer is an important part of the power system, and its normal operation plays a vital role in the stability and safety of the power system.
