Cast Resin Transformers

Cast resin Transformers are constructed with their HV windings encapsulated in resin and are an excellent alternative to traditional oil-immersed transformers.

Reduced sizes, less flammable and self-extinguishing, reduced maintenance and high mechanical resistance to electro-dynamic stresses are just some of the qualities of these transformers.

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Bowers Electricals supply new cast resins, both to suit typical distribution specifications and special designs to suit customers’ requirements.

Our Cast Resins are available from 50kVA to 5000kVA up to 36kV. We supply Transformers either, to IP00 specification which is required by LV Switchboard manufacturers, or with sheet steel ventilated enclosures and cable boxes, which can be designed and built to suit bespoke specifications.

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All our cast resin transformers are manufactured to IEC 60076-11 and Eco Regulation 548/2014.

Thanks to extensive experience in the production of magnetic cores, efficient and effective design of transformers and constant research of new materials, we can offer our customers the best optimisation of their operating costs by using our Tier 2 transformers.

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Our standard cast resin transformers are made to the following technical specification.

The transformers will be of the 3-phase 50Hz naturally cooled, double wound core type having a core manufactured from cold rolled steel. Typical fittings include:

HV off-circuit tapping links for ± 2×2.5%
Rating plate
PT100 temperature devices
Earthing terminal
Under-base with removable bi-directional rollers.

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