Abb Schweiz Ag

Hitachi Energy Ltd

Zhangang Lv

Xuan Liu

Rui Chen

JiaQuan Yan

Jiaquan Yan

ShengQiang Li

WeiDong Zhang

A balance spring assembly for a disconnector comprises a push rod partially and coaxially arranged in a blade of the disconnector which is rotatable about a first shaft to change an operation status of the disconnector, a first end of the push rod fixed to a second shaft so that the push rod is rotatable about the second shaft; and a spring arranged in the blade and around the push rod, the spring held between a second end of the push rod and an end of the blade adjacent to the first shaft, wherein the second shaft is arranged parallel to the first shaft to enable the push rod to axially move in the blade with a rotation of the blade to thereby compress or decompress the spring. By arranging the balance spring assembly at least in part in the blade of the disconnector, only one set of the springs is needed.

Balance spring assembly for disconnector

A disconnector and a method for manufacturing the disconnector are disclosed in the present application. The disconnector includes conductive arms pivotally coupled with each other, and finger contacts. The finger contacts have two opposite ends and an elastic portion between the two opposite ends, each of the finger contacts being fixed to the respective conductive arm by fasteners at the two opposite ends such that the elastic portion presses against the conductive arm. In response to the conductive arms being pivoted toward each other and clamping an electrical contact hanged at a bus-bar above the disconnector, the conductive arms are electrically coupled with the electrical contact via the respective finger contacts. A method of manufacturing a disconnector is also disclosed.

Disconnector and manufacturing method

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Beijing, China

Zhangang Lv