Pylon transformer

A pylon transformer is a transformer mounted on a pylon. Because of weight restrictions transformers for pylon transformers are only built for voltages under 30kV. Pylon transformers are often used for the power supply of facilities outside settlements, such as farmyards or pumping stations at voltages below 30kV. Another application is the power supply of switch heatings from the overhead wire of railways electrified with AC. In this case single phase pylon transformers are used.

In North American utility practice, these devices are called "pole mount" transformers, or nicknamed "pole pigs", and are very commonly used for distribution in rural areas.