Types Of Dry-type Transformers

1. Impregnated air insulation Dry Type Transformer: Currently, it is rarely used. Winding conductor insulation and insulation structure materials are selected from insulation materials of different heat resistance grades according to needs to make Class B, Class F and Class H insulation dry-type transformers.

2. Epoxy resin cast dry-type transformer: The insulation materials used are polyester resin and epoxy resin. Currently, cast insulation dry-type power transformers mostly use epoxy resin.

3. Wrap insulation dry-type transformer: Wrap insulation dry-type transformer is also a kind of resin insulation. Currently, there are few manufacturers.

4. Composite insulation dry-type transformer:

(1) High voltage winding adopts cast insulation, and low voltage winding adopts impregnation insulation;

(2) High voltage adopts cast insulation, and low voltage adopts foil winding wound with copper foil or aluminum foil.