1. Penetrating current transformer.A current transformer used to pass through a screen plate or wall.
2. Pillar type current transformer.Installed on a plane or pillar, and as a current transformer for the pillar of the circuit conductor.
3. Casing type current transformer.A current transformer that is directly set on an insulated casing without a single conductor and a single insulation.
4. Busbar type current transformer. There is not a single conductor but once insulated, a current transformer used directly in the Busbar.