US 11,984,288 B2
Drive arrangement for a tap changer
Martin Johansson, Ludvika (SE)
Assigned to HITACHI ENERGY LTD, Zürich (CH)
Appl. No. 17/623,916
Filed by Hitachi Energy Ltd, Zürich (CH)
PCT Filed Jun. 22, 2020, PCT No. PCT/EP2020/067292
§ 371(c)(1), (2) Date Dec. 30, 2021,
PCT Pub. No. WO2021/001188, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 19183692 (EP), filed on Jul. 1, 2019.
Prior Publication US 2022/0415586 A1, Dec. 29, 2022
Int. Cl. H01H 9/00 (2006.01)
CPC H01H 9/0027 (2013.01) [H01H 9/0016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drive arrangement for a tap changer, said drive arrangement comprising a first movable latch having a first and a second end, a first rotatable wheel with a first actuating element for engaging the first end of the first movable latch, a second rotatable wheel with a first locking element for engaging the second end of the first movable latch, and a first spring connected between the first and second wheels for storing energy caused by the movement of the first wheel around a first axis and apply it in the movement of the second wheel around a second axis, wherein the first actuating element is provided on a first curved surface of the first wheel and aligned with the first end of the first latch, while the first locking element is provided on a second curved surface of the second wheel and aligned with the second end of the first latch, the drive arrangement further comprising a second movable latch having a first and a second end, the first rotatable wheel having a second actuating element for engaging with the first end of the second movable latch, the second rotatable wheel having a second locking element for engaging with the second end of the second movable latch, and wherein the first actuating element is provided on a first half of the first curved surface of the first wheel, the first locking element is provided on a first half of the second curved surface of the second wheel, the second actuating element is provided on a second half of the first curved surface of the first wheel aligned with the first end of the second latch and the second locking element of the second rotating wheel is provided on a second half of the second curved surface of the second wheel aligned with the second end of the second latch.