Dry-Type Transformer Manufacturers Describe The Effect Of Materials On Performance

Dry type transformer is an important equipment used to change the voltage of alternating current, which is mainly composed of iron core, winding and insulation materials, dry type transformer manufacturing materials and processes have an important impact on the performance of power transformers.

The iron core is an important part of the dry transformer, it determines the magnetic circuit performance of the transformer, the commonly used core materials are silicon steel sheet and aluminum nickel cobalt alloy, silicon steel sheet is a common core material, its low permeability and high resistivity to reduce the magnetization loss and eddy current loss of the transformer, improve the efficiency of the transformer. In addition, the silicon steel sheet has good magnetic permeability and low hysteresis loss, which can reduce the hysteresis effect of the iron core and enhance the stability and uniformity of the magnetic field. However, the silicon steel sheet has a high cost and processing difficulty, and is prone to mechanical stress and vibration, so engineers have also begun to use new materials such as aluminum nickel cobalt alloy to replace the silicon steel sheet, in order to improve the performance of the transformer.

Second, the winding is another important part of the dry transformer, it determines the voltage change and transfer process, commonly used winding materials are pure copper wire and aluminum wire, pure copper wire has outstanding electrical conductivity and low resistivity, can reduce the resistance loss of the coil, improve the efficiency of the transformer, and aluminum wire has lower material cost and weight, but the conductivity is poor. It is easy to produce coke and heat, reducing the efficiency of the transformer, so in practical applications, engineers need to choose the right winding material according to the specific needs and economic factors.

In addition, the insulating material is an important protection and insulation layer of the transformer, which determines the voltage resistance and insulation performance of the transformer, commonly used insulating materials are insulating paper, insulating paint and insulating plywood, insulating paper has better electrical insulation characteristics and heat resistance, can prevent the winding from being electric shock and short circuit, insulating paint is a polymer material, can be used to coat and wrap the winding. Improve its electrical insulation performance and weather resistance, insulating plywood is composed of cellulose fiber and resin, has good electrical insulation performance and mechanical strength, can be used to fix and protect the winding.