What is an oil-filled bushing transformer?

An oil-filled bushing transformer is a type of transformer that utilizes oil as a coolant and insulator, primarily for the purpose of managing heat and providing insulation between the high-voltage and low-voltage conductors. These bushings, which are integral components, allow electrical connections to pass through grounded equipment while containing the insulating oil. This design helps ensure that the transformer operates efficiently and safely, especially in higher voltage applications where insulation requirements are critical. The oil not only serves to dissipate heat generated during operation but also acts as a barrier against moisture and contaminants, prolonging the life of the transformer and enhancing its reliability. The maintenance of the oil in such systems, including cleaning and regeneration when necessary, is essential to ensure optimal functioning and longevity of the oil-filled bushing transformer.