US 11,942,293 B2
System for controlling a vacuum interrupter for a power diverter switch, a power diverter switch and an on-load tap changer
Georgi Manev, Sofia (BG); Borislav Vasilev, Sofia (BG); and Todor Kokev, Sofia (BG)
Assigned to Hitachi Energy Ltd, Zurich (CH)
Appl. No. 18/023,458
Filed by Hitachi Energy Ltd, Zurich (CH)
PCT Filed Aug. 24, 2021, PCT No. PCT/EP2021/073380
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/089809, PCT Pub. Date May 5, 2022.
Claims priority of application No. 20203858 (EP), filed on Oct. 26, 2020.
Prior Publication US 2023/0230786 A1, Jul. 20, 2023
Int. Cl. H01H 33/666 (2006.01); H01H 9/00 (2006.01)
CPC H01H 33/666 (2013.01) [H01H 9/0038 (2013.01); H01H 2033/6667 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A system for controlling a vacuum interrupter for a power diverter switch, comprising:
a main driving shaft which is coupled to a control cam and which is configured to drive the control cam,
the vacuum interrupter which is configured to separate electrical contacts in a vacuum by use of a contact rod, and
a transmission unit which is configured to transmit a force generated by the main driving shaft to the contact rod, wherein the transmission unit comprises a plurality of rollable guiding elements and a lever mechanism which is in contact with the rollable guiding elements and which is coupled to both the control cam and the contact rod of the vacuum interrupter, wherein the guiding elements each are configured to be rollable around a respective axis of rotation that is perpendicular to a longitudinal center axis of the vacuum interrupter, such that a rotation of the control cam generated by the main driving shaft causes a movement of the contact rod due to a guided movement of the lever mechanism by means of rolling of the guiding elements,
wherein the lever mechanism further comprises guiding pins and a second lever driving element formed as a rolling bearing, a roller or a bushing arranged between the control cam and the lever and between the guiding pins respectively.