Transformer Bushings

What are transformer bushings?

Transformer bushings are electrical insulating components that provide a high-voltage electrical connection between a transformer and an external circuit. They are typically made of epoxy and porcelain and are designed to withstand high electrical and mechanical stresses.

Transformer bushings are used to connect the high-voltage internals of a transformer to an external power transmission or distribution system, while also providing electrical insulation and mechanical support. They are usually mounted on the transformer tank or the transformer cover and can be designed with various shapes and sizes depending on the specific application.

Transformer bushings are rated based on their maximum operating voltage, which determines the amount of electrical stress they can withstand without breaking down or causing electrical arcing. They are also rated based on their current carrying capacity, which determines the maximum amount of current they can safely transmit without overheating.

Overall, transformer bushings play a critical role in ensuring the safe and reliable operation of power transformers, by providing a secure and insulated electrical connection between the transformer and the external power system.

Polycast manufactures epoxy transformer bushings, which have many advantages over porcelain transformer bushings. Epoxy bushings are stronger, lighter, more durable, easier to install, and more flexible than porcelain and other materials. Epoxy is the main choice for power utilities, industrial plants, and renewable energy companies, as well as railways, data centers and the oil and gas industry. If you have ever encountered downtime brought on by the field failure of a porcelain bushing, employing epoxy bushings could have reduced the expensive cost of that downtime.

Our high standards guarantee great quality, dependability, and safety, in compliance with the relevant industry standards, including CSA, IEC, NEMA, and IEEE.