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Epoxy Resin Dry Type Transformer SCB13-315/10
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Dry type transformer also called epoxy resin type dry transformer.
Epoxy resin type dry transformer refers to: mainly use epoxy resin as insulation material dry transformer, the current market is mainly two categories: epoxy resin cast dry transformer and epoxy resin type dry transformer.
1, epoxy resin type dry transformer
Epoxy resin is a widely used chemical raw materials, it is not only a flame retardant, flame retardant material, and has superior electrical properties, and later gradually adopted by the electrical manufacturing industry. So far, the vast majority of dry transformers produced in the country are epoxy-cast.
2, epoxy resin winding dry transformer
When the winding of epoxy resin winding dry transformer is wound, glass fiber and epoxy resin are used as insulation materials, and it is wound together with the wire in a special winding machine to make the winding. After the winding is finished, the whole winding is dried and cured in a rotary non-vacuum curing furnace to make it a whole.
Because the resin is used in the conventional environment rather than under vacuum in the manufacturing process, it is inevitable that the air will be wrapped in its interior, which is easy to cause partial discharge, so the design field strength of the epoxy resin winding type transformer is smaller, and the transformer volume will be larger.
The epoxy resin wound dry transformer does not require vacuum treatment equipment, pouring equipment and special molds during manufacturing, and its tensile strength and thermal expansion coefficient are higher than that of the epoxy resin cast dry transformer. However, the epoxy resin winding dry transformer has higher cost, more working hours, and is easy to cause partial discharge. At present, its application is much less than the pouring type.