Current Transformers Classified By Insulation Medium

1. Dry type current transformer: made of ordinary insulation material that has been impregnated with paint as insulation.
2. Cast in place current transformer: a current transformer molded by casting epoxy resin or other resin mixed materials.
3. Oil immersed current transformer: insulated with insulating paper and insulating oil, generally outdoor type.
4. Gas insulated current transformer: The main insulation is composed of gas.