Patent ID: 8106326

Claim:
A grounding switch comprising: a high-voltage electrode and an earth electrode located facing each other along a same center axis within tanks that encapsulate an insulating gas; a moving contact that is electrically connected to the earth electrode and that is capable of being reciprocally driven along the center axis; a moving arc contact provided at an end part of the high-voltage electrode at the moving contact; a plurality of high-voltage contacts, each having a high-voltage main contact that makes contact with the moving contact in a closed state, electrically connected to the high-voltage electrode, and arranged along a circumferential direction taking the center axis as a center; a high-voltage arc contact, provided at at least one of the high-voltage contacts, provided further towards a side of the earth electrode than a position of the high-voltage main contacts at the end part of the high-voltage contact; an anti-arcing shield arranged to cover the high-voltage arc contact at the high-voltage electrode in a vicinity of the high voltage arc contact while avoiding direct contact with the high-voltage arc contact; and a drive mechanism that reciprocally drives the moving contact in the direction of the center axis, wherein a valley section is provided between the high-voltage arc contact and the high-voltage main contact at the high-voltage contact such that the moving arc contact does not make contact with the valley section.