US 11,996,256 B2
Switching system for an on-load tap changer, on-load tap changer and method for switching a tap connection of an on-load tap changer
Georgi Manev, Sofia (BG); Todor Kokev, Sofia (BG); and Angel Mihaylov, Plovdiv (BG)
Assigned to HITACHI ENERGY LTD, Zürich (CH)
Appl. No. 18/020,471
Filed by HITACHI ENERGY LTD, Zürich (CH)
PCT Filed Jul. 5, 2021, PCT No. PCT/EP2021/068484
§ 371(c)(1), (2) Date Feb. 9, 2023,
PCT Pub. No. WO2022/083904, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 20202952 (EP), filed on Oct. 21, 2020.
Prior Publication US 2023/0230782 A1, Jul. 20, 2023
Int. Cl. H01H 9/00 (2006.01)
CPC H01H 9/0027 (2013.01) 18 Claims
OG exemplary drawing
 
1. A switching system for an on-load tap changer, comprising:
a Geneva mechanism, wherein the Geneva mechanism comprises:
a rotatable ring with a recess, the rotatable ring comprising a current carrier ring and a drive ring being fixed relative to the current carrier ring;
a connector being rotatable together with the rotatable ring to electrically connect with a tap of the on-load tap changer, the current carrier ring being electrically connected to the connector;
a rotatable driving wheel with a protrusion, the protrusion being coupleable with the recess to rotate the rotatable ring, the drive ring being rotatable by the driving wheel; and
a holder being fixed relative to a housing, wherein
the rotatable ring is supported by the holder and being rotatable relative to the holder, and
the driving wheel is arranged inside the rotatable ring.