公开(公告)号：US20230223189A1

公开(公告)日：2023-07-13

申请号：US18118910

申请日：2023-03-08

申请人： HITACHI ENERGY SWITZERLAND AG

发明人： Jedrzej Bananszczyk ,  Jan Czyzewski ,  Bartlomiej Adamczyk ,  Lucasz Bachorz ,  Wojciech Wysocki ,  Marcin Tarnowski ,  Roger Hedlung ,  Peter Sjoberg ,  Jan Ostlund

IPC分类号： H01F38/26 ,  H01F27/24 ,  H01F27/29 ,  H01F38/30 ,  H01F27/02 ,  H01F38/36 ,  H01F41/06 ,  H01F27/32 ,  H01F41/02

CPC分类号： H01F38/26 ,  H01F27/24 ,  H01F27/29 ,  H01F38/30 ,  H01F27/02 ,  H01F38/36 ,  H01F41/06 ,  H01F27/321 ,  H01F41/0206

摘要： A high voltage (HV) apparatus insulated with an insulating gel includes at least two electrically conductive elements, such as a head transformer cover, a head housing base, a core casing, a primary conductor, bottom external housing, a bottom support flange, and/or a core. At least one of the electrically conductive elements has a coating made of solid insulating material separating the surface of the conductive element from the insulating gel and adapted for limiting electron emission from the conductive elements into the insulating gel.