US 11,791,109 B2
Three-position disconnector switch
Michal Skuci, Brno (CZ); Josef Cernohous, Jamne nad Orlici (CZ); Radek Javora, Hrusovany u Brna (CZ); and Tomas Kozel, Brno (CZ)
Assigned to ABB Schweiz AG, Baden (CH)
Filed by ABB Schweiz AG, Baden (CH)
Filed on May 11, 2022, as Appl. No. 17/741,569.
Claims priority of application No. 21173953 (EP), filed on May 14, 2021.
Prior Publication US 2022/0367127 A1, Nov. 17, 2022
Int. Cl. H01H 1/06 (2006.01); H01H 1/20 (2006.01); H01H 1/36 (2006.01); H01H 1/62 (2006.01)
CPC H01H 1/365 (2013.01) [H01H 1/06 (2013.01); H01H 1/20 (2013.01); H01H 1/62 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A three-position disconnector switch, comprising:
an earthing contact;
a power out contact;
a power in contact; and
a piston;
wherein the power out contact comprises a first part, a second part, and a leg portion interconnecting the first part and the second part, the leg portion having a width that extends only partially about a periphery of each of the first part and the second part;
wherein, in a first switch position, an outer surface of a wall of the piston makes a direct electrical contact with the first part of the power out contact and makes a direct electrical contact with the power in contact;
wherein, in a second switch position, the outer surface of the wall of the piston makes a direct electrical contact with the first part of the power out contact and makes a direct electrical contact with the second part of the power out contact;
wherein, in a third switch position, the outer surface of wall of the piston makes a direct electrical contact with the second part of the power out contact and makes a direct electrical contact with the earthing contact; and
wherein the piston is configured to move along an axis of the three-position disconnector switch to transition the three-position disconnector switch between the different switch positions.