Keith Ellis has worked in the power transformer industry since 1971. During his 40 year career in the industry, he has gained a unique perspective concerning every aspect of Bushings for Power Transformers. In the early days, he selected bushings for power transformer quotations, then, while in field sales, he supervised the installation of bushings in many new power transformers.
Beginning in 1986 he focused his efforts specifically on power transformer components, becoming knowledgeable about every phase of bushing development, design and application. In 1992 he was challenged to develop a line of IEEE/ANSI standard bushings for the US market.
In 1995 he developed the concept for high current, low voltage, draw lead bushings. These new bushing designs transformed the bushing industry; bring a new level of safety, lower costs and faster replacement of bushings to the Utility industry.
Another development Keith has achieved was the introduction of non-porcelain insulators for oil filled bushings. This introduction brought a new level of safety to the electric substation by reducing collateral damage when there is a major power transformer failure.
Keith has also gained experience over the years investigating power transformer failures where the bushing was the suspect. This has gained him the reputation as the go to person when there is a failure of a power transformer, especially if the bushing is suspected.
In 2010 Keith decided to share his years of bushing and power transformer experience by writing this book with the objective of providing the Utility Engineers and Technicians with a comprehensive handbook on Bushings for Power Transformers.