公开(公告)号：US20150248978A1

公开(公告)日：2015-09-03

申请号：US14707486

申请日：2015-05-08

Applicant: ABB Technology AG

Inventor： Dietmar GENTSCH ,  Kai HENCKEN ,  Tarek LAMARA

IPC: H01H33/664

CPC classification number: H01H33/6642

Abstract: An exemplary vacuum interrupter arrangement for a medium voltage circuit breaker includes a vacuum housing within which a pair of electrical contacts are coaxially arranged and concentrically surrounded by the cylindrical shaped vacuum housing. The electrical contacts are formed as a type of TMF-contacts, each having a slotted cup-shaped contact part which is attached to the distal end of a contact shaft and which is covered by a contact ring disposed on a rim of the cup-shaped contact part, wherein each cup-shaped contact part is provided with a vertical inward bending towards the contact ring. The outer diameter of the bottom section of the cup-shaped contact part is larger than the outer diameter of its rim section, in order to alter the Lorentz force to a respective inward direction.

Abstract translation: 用于中压断路器的示例性真空断续器装置包括真空壳体，在该真空壳体内一对电触头同轴地布置并同心地被圆柱形真空壳体包围。 电触点形成为一种类型的TMF触头，每个具有开槽的杯形接触部分，其连接到接触轴的远端，并且由接触环覆盖，该接触环设置在杯形的边缘 接触部分，其中每个杯形接触部分设置有朝向接触环的垂直向内弯曲。 为了将洛伦兹力改变到相应的向内方向，杯形接触部分的底部部分的外径大于其边缘部分的外径。