公开(公告)号：EP2992538A1

公开(公告)日：2016-03-09

申请号：EP14723998.2

申请日：2014-04-25

Applicant: ABB Technology AG

Inventor： BANASZCZYK, Jedrzej ,  CZYZEWSKI, Jan ,  ADAMCZYK, Bartlomiej ,  WYSOCKI, Wojciech ,  BACHORZ, Lukasz ,  GRYSZTAR, Pawel ,  TZAVALAS, Spiros ,  KRUESI, Urs ,  MEIER, Patrick ,  SJOGREN, Lars

IPC: H01F38/20

CPC classification number: H01F38/30 ,  H01F27/022 ,  H01F27/04 ,  H01F27/324 ,  H01F27/327 ,  H01F38/24 ,  H01F38/28

Abstract: The subject of invention is a high-voltage (HV) instrument transformer based on a new type of combined dry insulation system. The HV instrument transformer is characterized in that the current transformer (1) has a head insulating body (7) in a form of a bushing for electrical insulation of the secondary winding assembly (5) from the primary winding conductor (6). The head insulating body (7) is placed within a conductive encapsulation (12) and being in contact with the insulating member (15), which the insulating member (15) is made of an elastic conformable material which tightly adheres to matching outer surfaces of the head insulating body (7) of the current transformer (1) and the conductive encapsulation (12) or (26) is made of electrically conductive polymer or electrically conductive elastomer material.

Abstract translation: 本发明的主题是基于新型组合干式绝缘系统的HV仪表变压器。 高压仪表变压器具有电流互感器（1）或变压器（21）的形式。 电流互感器（1）具有头部绝缘体（7），其具有用于从初级绕组导体（6）与次级绕组组件（5）的电绝缘的衬套的形式，头绝缘体（7）被放置在 导电封装（12）并与所述绝缘构件（15）接触。 绝缘构件（15）由弹性可压缩材料或弹性适形材料制成，该材料紧密地粘附在头绝缘体（7），柱绝缘体（13），绕组屏蔽（10）的匹配外表面上，并且 电流互感器（1）的导电封装（12）的内表面，而对于变压器（21），绝缘构件（30）由与电流互感器（1）相同的材料制成，绝缘构件 （30）紧密地粘附到初级绕组（24），柱绝缘体（28）的匹配外表面和导电封装（26）的内表面。