What is a dry type test transformer and what is its function

In recent years, with the development of my country\'s power system, the test requirements for various components in the power system are getting higher and higher, and the test transformer must have strong insulation performance, low leakage current, good heat dissipation performance and high resistance to voltage strength, for which the test transformer should have the characteristics of small size, light weight, high efficiency, low noise, etc. Dry type test transformers are widely used in power system.

Dry transformer refers to a test transformer used for testing the insulation of electrical equipment and testing electrical performance. With the development of my country\'s power system, the test requirements for each part in the power system are getting higher and higher, and the test transformer is becoming more demanding. In fact, a layer of insulating varnish is applied to the iron core material,the iron core and winding are separated by insulating material, and the winding and shell are separated by insulating material. Due to its small size, light weight, high efficiency and low noise, it is widely used in insulation testing and electrical performance testing in power systems.

The structure of the dry type test transformer:

The dry type test transformer is mainly composed of iron core, winding, oil tank, iron yoke , oil cushion, bush The iron core is mainly composed of silicon steel plates. The winding generally consists of coils with several turns. The oil tank can be divided into two types: vacuum oil tank and oil-immersed oil tank. The function of the winding is to convert the voltage on the power line into current.

Comparative Analysis of Dry Type Test Transformers and Traditional Winding Type Test Transformerspe:

Wound type test transformers generally use mains frequency test power supplies, which must be amplified by high-voltage DC power supplies. And adjust the voltage of the test transformer by adjusting the size of the high-voltage DC power supply. While this can increase the output power of the test transformer, it will generate a lot of noise when the output power is large. As the voltage level in the power system gets higher and higher, the performance requirements for the high voltage DC test transformer also get higher and higher. Because the dry type test transformer uses a high voltage DC power supply for boosting, it has low noise, no oil gap, smaller volume, lighter weight, good insulation performance and good heat dissipation effect during the testing process, and can be directly connected to the tested circuit connection can remote control and monitoring of the circuit under test.

By thethe above analysis can be found that the dry type high voltage booster has the characteristics of small size, light weight, high efficiency and low noise, so it is widely used in power systems, but the current dry type test in my country There are still some problems with the transformer, which seriously affected the further development of the dry type test transformer. With the development of the social economy, people\'s demand for energy resources is increasing. In order to meet the needs of social production and people\'s daily life, it is necessary to constantly develop and use energy resources. In the process of developing and using electrical energy resources, it is necessary to select appropriate electrical equipment. When using electrical equipment, it should be applied reasonably in order to fully exploit the advantages of electrical equipment. On thethis way can improve the application efficiency of the dry test transformer.

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