Method for producing Coyle of oil input transformer and Coyle and oil immersed transformer

摘要

Problem to be solved: to provide a self cooling type oil inlet transformer with improved cooling capacity. The oil immersed transformer comprises a plurality of windings formed around the central axis and arranged in the axial direction parallel to the central axis, and a duct piece which is disposed between the windings, and has a duct constituting an oil path of insulating oil. The duct extends in a direction perpendicular to the center axis in a spiral direction. Diagram