Cast Coil Transformers

Cast coil transformers have windings that are solidly-cast in resin under a vacuum in a mold. This manufacturing process covers the transformer windings in a strong, low-viscosity, epoxy resin with a high dielectric strength. It also protects the device from harsh or severe operating environments with high electrical demands. Cast coil transformers are well-suited for applications that require long service life and little maintenance. They represent a cost-effective alternative to medium-voltage, liquid-filled transformers that may pose environmental concerns and incur increased insurance costs. Specifications, materials of construction, application requirements, and certifications are important parameters to consider when these electrical and electronic components. Cast coil transformers also differ in terms of enclosure type, and provide features such as forced-air cooling.

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