Dufrane is a leading manufacturer of Custom Transformers such as Current Transformers, Power Transformers, Toroidal Transformers, Isolation Transformers, Chokes, Reactors, and many other small custom Electromagnetic dry type transformer solutions.

Current transformers are frequently used for accurately measuring current and monitoring the operation of the power system.  A current transformer has a primary winding, a core and a secondary winding, and some custom transformers, including current transformers, use an air core. While the physical principles are the same, the details of a “current” transformer compared with a “voltage” transformer will differ owing to different requirements of the application. A current transformer will maintain an accurate current ratio between the primary and secondary circuits.

Depending on customer requirements, Dufrane’s current transformers are designed in accordance with major standards including IEC 61869-1 (in the past IEC 60044-1) & IEEE C57.13 (ANSI),  Dufrane also manufactures any of its custom transformers to many international standards to meet customer requirements.

Dufrane offers a complete range of current transformers including bar type, ring type, split ring type (including clamps), Wound Current Transformer, Toroidal Current Transformer, Rectangular Toroidal Winding Current Transformers, and Air Core and many customizations which can include multiple taps as necessary and special mounting hardware, cables, and other specific requirements.  Dufrane is the authorized supplier and manufacturer of hundreds of old GE parts, including many custom variations of current transformers.

If you have a current transformer requirement, please contact us to discuss your application!