Power transformer design, construction and field assembly

Power transformers are the heart of every electrical transmission and distribution system. The concept was first conceived and developed in the late 1800's by Faraday, Maxwell, and Tesla, and put into common practice by the likes of Edison and Westinghouse. Since then, the basic concept of the transformer has remained the same for over 100 years, however, design and construction techniques have continually improved to increase both the overall efficiency and cost effectiveness of manufactured units. This paper will examine the basics of transformer design, construction and field installation focusing on details to ensure longevity of an installed unit.