Patent ID: 9177740
Filing Date: 2015-11-03
Classification: H01H

Abstract:
1. A gas-insulated high-voltage switch for the interruption of large currents, the switch comprising: a housing filled with insulating gas; a contact arrangement which is arranged in the housing and has two switching pieces which are configured to be moved relative to one another along an axis, each of the switching pieces having a rated current contact and an arcing contact, respectively; a drive configured to act on a first of the two switching pieces; and a device configured to detect and indicate a contact wear of the two arcing contacts of the two switching pieces caused by an action of an arc, the device including an indicator arranged outside the housing, wherein, when the contact arrangement is closed, the two arcing contacts butt against one another head-to-head at a free end while forming an abutment point, wherein the arcing contact of a second one of the switching pieces is mounted to be moved axially against the action of a pre-loaded spring and carry an axially aligned operating element at the end thereof facing away from the abutment point, and wherein the device includes a transmission mechanism which is fed through the housing in a gas-tight manner and a drive member which is coupled to the operating element.