US 4,363,069 AGranted

Overvoltage arrester with arrester elements in a frame comprising columns

AssigneeSiemens Aktiengesellschaft

InventorsMichael Crucius, Mohamed A. Hassan

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Abstract

Disclosed are overvoltage arresters comprising a columnar arrangement of arrester elements, insulating elements and conducting elements. The elements are arranged to provide a current flow in at least one plane extending transversely to the columns. The conducting frame elements connect other elements thereto which elements extend both axially and transversely of the columns. For an arrester including n conducting frame members per plane, n-1 arrester elements are arranged per plane of the columnar structure. The current connection between adjacent plane is made by an arrester element or by a conducting member preferably such that opposite current flows are obtained in adjacent planes. Overvoltage arresters according to the invention are particularly suited for using voltage-dependent resistors of the zinc oxide type alone or in conjunction with spark gaps. The columnar structure may be disposed in a customary insulating gas such as nitrogen or in a gas with particularly high insulating strength such as SF.sub.6.

Claims13

Dependent claims

An overvoltage arrester comprising a plurality of arrester elements, a plurality of insulating elements and a plurality of conducting elements arranged to form a plurality of columns interconnected by arrester elements, each column comprising at least two spaced conducting frame elements and at least one additional element axially interposed between two conducting frame elements of the column, selected adjacent columns being interconnected by an arrester element which is interposed between respective conducting frame elements of the selected adjacent columns and which lies in a plane extending at about a right angle between adjacent columns, each said conducting frame element including means for connecting a said additional element thereto axially of a respective column and an arrester element thereto which is disposed in a respective said plane, there being a plurality of arrester elements per plane and one more conducting frame element per plane than the number of arrester elements per plane, each said additional element being one of an arrester element, an insulating element and a conducting support element, said insulating elements, conducting elements, and arrester elements being interconnected to provide a current path from an input to an output of said overvoltage arrester through said arrester elements.

Dependencies are inferred from the claim text.