公开(公告)号：US20230282411A1

公开(公告)日：2023-09-07

申请号：US18181673

申请日：2023-03-10

Applicant: ABB Schweiz AG

Inventor： Jedrzej Banaszczyk ,  Adam Anszczak ,  Wojciech Piasecki ,  Wojciech Wysocki ,  Bartlomiej Adamczyk

IPC: H01F27/32 ,  H01F41/12 ,  H01F27/28

CPC classification number: H01F27/327 ,  H01F41/122 ,  H01F27/323 ,  H01F27/288 ,  H01F2027/329

Abstract: A primary coil suitable for use in a transformer includes a primary winding bobbin onto which a layer of a primary winding and at least one layer, which includes a fixed number of 1 to 3 layers, of an interlayer insulation material are wound alternately, wherein the interlayer insulation material and the primary winding are impregnated with an epoxy, and wherein the interlayer insulation material is a nonwoven material or a crepe paper.