Dry Cast Resin Transformers Important Components

1. Dry Cast Resin Transformers Core Material:

The iron core materials used in transformers mainly include iron sheets, low-silicon sheets, and high-silicon sheets. Adding silicon to steel sheets can reduce the conductivity of steel sheets and increase resistivity. It can reduce eddy currents and reduce losses. We usually call the silicon-added steel sheet silicon steel sheet. The quality of the transformer has a great relationship with the quality of the silicon steel sheet used. The quality of the silicon steel sheet is usually expressed by the magnetic flux density B. Generally, the B value of the black iron sheet 6000-8000 for low silicon chips, 9000-11000 for low silicon chips, and 12000-16000 for high silicon chips.

2. The materials commonly used for winding dry cast resin transformers are

Enameled wire, sandbag wire, wire covered wire, the most commonly used enameled wire. The requirements for the wire are good electrical conductivity, sufficient heat resistance of the insulating paint layer, and certain corrosion resistance. In general, it is best to use high-strength polyester enameled wire of the Q2 type.

3. Dry Cast Resin Transformers Insulation Material

In winding transformers, insulating materials are used for the isolation between the layers of the coil frame and the isolation between the windings. The general transformer frame material can be made of phenolic cardboard, the layers can be isolated by polyester film or telephone paper, and the windings can be yellow Wax for isolation.

4. Dry Cast Resin Transformers Impregnated Material:

After the transformer is wound, the last process is to impregnate the insulating varnish, which can enhance the mechanical strength of the transformer, improve the insulation performance, and prolong the service life. Generally, cresol varnish can be used as the impregnating material.