Patent ID: 8471662

Claim:
An oil transformer insulation module comprising: a plurality of disc-like insulation elements of identical type which are arranged flush one above another along a line, connected to one another and each having a similar outline contour; and an intermediate layer having a similar outline contour composed of a solid insulation material arranged between at least two insulation elements arranged one above another, wherein at least one of the insulation elements has a first flat layer and a second layer adjacent and predominantly parallel thereto, the first and second layers each being composed of a mechanically strong, planar first insulation material, wherein the first and second layers of the first insulation material are connected to and spaced apart from a third, corrugated layer which is arranged between the first and second layers and which is composed of a mechanically strong, planar second insulation material, wherein the third layer has lateral edges and is corrugated such that all cavities formed by the corrugation of the third layer are configured to be completely flooded with a liquid via lateral edges of the at least one insulation element, and wherein the intermediate layer has an outline contour which is larger than the respective outline contour of the adjoining insulation elements, such that the intermediate layer forms a circumferential overhang.