Overhead Transformers The most common type of distribution transformer used in North America is the single-phase oil-filled, pole-mounted transformer, normally referred to as a "pole-top" or "overhead" transformer. ... This oil provides both electrical insulation and cooling to the windings of the transformer.
What are the 3 types of transformers?
There are three primary types of voltage transformers (VT): electromagnetic, capacitor, and optical.
How much does an overhead transformer cost?
Power pole transformers cost anywhere from $3,000 to $7,000 each, depending on how much electricity they're designed to handle. The money comes from utility customers.Jul 26, 2006