Materials used for special transformers

1, iron core material

The iron core materials used in transformers mainly include iron sheets, low silicon chips, and high silicon chips. Adding silicon to the steel sheets can reduce the conductivity of the steel sheets and increase the resistivity. It can reduce eddy currents and reduce losses. We usually call it In order to add silicon steel sheet to silicon steel sheet, the quality of the transformer has a great relationship with the quality of the silicon steel sheet used. , low silicon wafer is 9000-11000, high silicon wafer is 12000-16000,

2. Materials commonly used for winding transformers

Enameled wire, yarn-covered wire, silk-covered wire and paper-covered wire, commonly used enameled wire. For the requirements of the wire, the electrical conductivity is good, the insulating enamel layer has sufficient heat resistance, and must have a certain corrosion resistance. Generally, QZ is used. Model of high-strength polyester enameled wire.

3, insulating material

In the winding transformer, the isolation between the layers of the coil frame and the isolation between the windings must be made of insulating materials. The general transformer frame material can be made of phenolic cardboard, epoxy board, or cardboard. The layers can be made of polyester film, telephone Paper, 6520 composite paper, etc. are used for isolation, and yellow wax cloth or imine film can be used for isolation between windings.

4, impregnating material

After the transformer is wound, there is another process, which is to impregnate the insulating paint, which can enhance the mechanical strength of the transformer, improve the insulation performance, and prolong the service life. In general, cresol varnish can be used as the impregnating material or 1032 insulating paint. Resin paint.