US 12,033,813 B2
Vacuum switching device for medium- and high-voltage applications
Karsten Freundt, Falkensee (DE); and Christian Schacherer, Deining (DE)
Assigned to Siemens Energy Global GmbH & Co. KG, Munich (DE)
Appl. No. 17/434,816
Filed by SIEMENS ENERGY GLOBAL GMBH & CO. KG, Munich (DE)
PCT Filed Feb. 25, 2020, PCT No. PCT/EP2020/054814
§ 371(c)(1), (2) Date Aug. 30, 2021,
PCT Pub. No. WO2020/173894, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 10 2019 202 741.5 (DE), filed on Feb. 28, 2019.
Prior Publication US 2022/0102084 A1, Mar. 31, 2022
Int. Cl. H01H 1/58 (2006.01); H01H 33/66 (2006.01)
CPC H01H 1/5833 (2013.01) [H01H 33/6606 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A vacuum switching device for a medium or high voltage, comprising:
a drive rod having, along a switching axis, an electrically insulating region and an electrically conducting region;
two contacts, at least one of said two contacts is mounted so as to be mechanically movable via said drive rod and at a same time is electrically connected to said drive rod;
a vacuum space in which said contacts are disposed; and
a spring contact disposed outside said vacuum space, said drive rod, in a closed state of said contacts, is electrically connected to a power line via said spring contact, and in that said spring contact, in an open state of said contacts, is electrically insulated from said drive rod, said spring contact, in the open state of said contacts, bears on said electrically insulating region of said drive rod.