Electronics Engineering
Electrical Engineering
Electrical Wiring
The Difference Between

What is a dry-type transformer?



User Avatar
Wiki User

Electric company high voltage transformers used in the utility grid are typically insulated by being immersed in a tank of oil, and cooled by natural convection (circulation) of the oil. A "dry type" transformer is not immersed in oil, and is cooled by air convection or by fans.