Oil-immersed transformer of novel structure

The invention relates to an oil-immersed transformer of a novel structure. The transformer comprises an oil-immersed transformer body, iron cores and three-phase windings are arranged inside the oil-immersed transformer body, wherein each three-phase winding is arranged at the outer side of the corresponding iron core in a wrapping mode, the three-phase windings are isolated from one another through phase partition boards, the two sides of each phase partition board abut against the outer surfaces of the corresponding windings, each winding is constituted by high tension coils and low tension coils, wherein the low tension coils are arranged at the outer sides of the corresponding iron core in an encircling mode, the high tension coils are arranged at the outer sides of the corresponding low tension coils in an encircling mode, the high tension coil and the corresponding low tension coils are all of long-circle-shaped structures and distributed coaxially, and the low tension coils are isolated from the corresponding high tension coils through cable paper, crepe paper and high tension stay curtains. By means of the oil-immersed transformer, on one hand, the structure of the transformer is effectively simplified, deadweight of the transformer is lowered, the heat dissipation area is enlarged, on the other hand, by optimizing the structures of the high tension coils and the structures of the low tension coils, using amount of production materials consumed for the transformer, such as electrical power cables and iron, is effectively reduced, and production cost of the transformer is effectively lowered.