公开(公告)号：US09672969B2

公开(公告)日：2017-06-06

申请号：US14705537

申请日：2015-05-06

Applicant: ABB Schweiz AG

Inventor： Anders Eriksson ,  Erik Wedin ,  Jan Lindgren ,  Mats Berglund ,  Mats Ramkvist ,  Stina Bertilsson ,  Tina Brunström

IPC: H02G3/18 ,  H01B17/26 ,  H01B17/28 ,  H01F27/04 ,  H01F27/02

CPC classification number: H01F27/04 ,  H01F27/022

Abstract: A high voltage electromagnetic induction device including: a lead-through device-receiving structure having an opening for receiving a lead-through device, a lead-through device extending through the opening, wherein an internal portion is tapering in a direction along the central axis of the lead-through device away from the opening, and an electrical insulation barrier which is arranged in the lead-through device-receiving structure, arranged around and distanced from the internal portion, and which electrical insulation barrier is tapering in the direction, whereby a duct is formed between the internal surface of the electrical insulation barrier and the external surface of the internal portion of the lead-through device, wherein the electrical insulation barrier is tapering relative to the lead-through device such that the distance between the internal surface of the electrical insulation barrier and the external surface of the lead-through device increases in the direction.