SC(B)10 Dry Type Transformer

Important components in detail: 1. Core material: The core materials used in transformers are mainly 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 steel sheets with silicon added as silicon steel sheets. The quality of the transformer is closely related to the quality of the silicon steel sheets used. The quality of silicon steel sheets is usually expressed by the magnetic flux density B. The B value of black iron sheets is generally 6000-8000, low silicon sheets are 9000-11000, and high silicon sheets are 12000-16000. 2. The materials commonly used for winding transformers are enameled wire, sand-wrapped wire, silk-wrapped wire, and the most commonly used enameled wire. The requirements for the wire are good conductivity, sufficient heat resistance of the insulating paint layer, and a certain degree of corrosion resistance. In general, it is best to use high-strength polyester enameled wire of model Q2. 3. Insulating materials: In the winding transformer, the isolation between the coil frame layers and the isolation between the windings must use insulating materials. The general transformer frame material can be made of phenolic paperboard, the layers can be isolated with polyester film or telephone paper, and the windings can be isolated with yellow wax cloth. 4. Impregnation material: After the transformer is wound, it has to go through the last process, which is impregnation with insulating varnish, which can enhance the mechanical strength of the transformer, improve the insulation performance, and extend the service life. Under normal circumstances, cresol varnish can be used as the impregnation material.