US 12,469,636 B2
Tap changer arrangement and a transformer arrangement comprising the tap changer arrangement
Per Krainer, Borlänge (SE); Christer Arnborg, Gävle (SE); Jean Louis Gérard Mathae, Ludvika (SE); and Daniel Forsman, Elverum (NO)
Assigned to HITACHI ENERGY LTD, Zürich (CH)
Appl. No. 18/880,424
Filed by Hitachi Energy Ltd, Zürich (CH)
PCT Filed Jul. 19, 2023, PCT No. PCT/EP2023/070007
§ 371(c)(1), (2) Date Dec. 31, 2024,
PCT Pub. No. WO2024/017943, PCT Pub. Date Jan. 25, 2024.
Claims priority of application No. 22186495 (EP), filed on Jul. 22, 2022.
Prior Publication US 2025/0166886 A1, May 22, 2025
Int. Cl. H01F 29/02 (2006.01)
CPC H01F 29/025 (2013.01) 13 Claims
OG exemplary drawing
 
1. A tap changer arrangement comprising a tap changer housing having a longitudinal extension along a first axis, which the tap changer housing comprises:
a first interface part, at a proximal part of the tap changer housing, fixedly attachable to a support structure of a transformer tank,
a second interface part at a distal part of the tap changer housing, and
an intermediate housing part arranged between the first interface part and the second interface part, the first interface part, the intermediate housing part and the second interface part being arranged on the first axis,
wherein the tap changer housing is arranged to be suspended from the support structure of a transformer tank by the first interface part of the tap changer housing,
wherein the tap changer arrangement comprises a plurality of support elements, each having a longitudinal extension along a respective support element axis, whereby each of the plurality of support elements is i) mechanically connected to the second interface part and ii) either mechanically connected to the first interface part or arranged to be mechanically connected to the support structure of the transformer tank, the plurality of support elements being distinct elements, separate from the intermediate housing part, and configured to exert a compressive force on the intermediate housing part from the first interface part and from the second interface part such that the intermediate housing part is pre-tensioned between the first interface part and the second interface part,
wherein at least one of the plurality of support elements is arranged to be inclined relative to the first axis by a first angle between the first axis and the support element axis, wherein the first angle is between-45 degrees and 45 degrees but not at a vertical orientation of 0 degrees.