(1) Iron core material. Transformers rely on the principle of electromagnetic induction to regulate current and voltage values, and the iron core is the core component of transformers, whose material condition determines the regulating function of transformers. It is best to add silicon to the iron sheet as the core material to reduce the conductivity and thermal conductivity of the steel sheet and avoid increased energy consumption after device operation. In the power industry standards, it is stipulated that the magnetic flux density of silicon steel sheets should be controlled within an effective range, such as the magnetic flux density of black iron sheets at 7000 and low silicon wafers at 10000. The installation site can be selected according to the actual situation.
(2) Insulation material. In recent years, the incidence of accidents during transformer installation and operation has been continuously increasing. Considering the safety issues during transformer installation, on-site personnel need to pay attention to the selection of insulation materials to protect the normal operation of other equipment in the system. At present, many transformers are equipped with insulation components such as gaskets and insulating devices, but there are still safety risks due to improper human operation. The installation of transformers requires enhancing their insulation performance in terms of isolation between coil frame layers and between windings.
(3) Immersion material. Immersion treatment is the final process of processing winding materials, with the main purpose of improving the mechanical, electrical, and insulation properties of the material, and avoiding various safety accidents during later use. After selecting the winding material, the installation personnel should apply paint to the impregnated material and set an insulation layer on the surface of the material. The commonly used paint material is cresol varnish, which can play a good safety role and extend the service life of transformer equipment after brushing treatment.