US 12,406,801 B2
On-load tap changer and method for actuating an on-load tap changer
Christian Hammer, Regensburg (DE); and Dominik Plitzko, Regensburg (DE)
Assigned to MASCHINENFABRIK REINHAUSEN GMBH, Regensburg (DE)
Appl. No. 18/250,752
Filed by Maschinenfabrik Reinhausen GmbH, Regensburg (DE)
PCT Filed Sep. 30, 2021, PCT No. PCT/EP2021/076970
§ 371(c)(1), (2) Date Apr. 27, 2023,
PCT Pub. No. WO2022/089870, PCT Pub. Date May 5, 2022.
Claims priority of application No. 10 2020 128 463.2 (DE), filed on Oct. 29, 2020.
Prior Publication US 2023/0411072 A1, Dec. 21, 2023
Int. Cl. H01F 29/04 (2006.01); H01H 9/00 (2006.01)
CPC H01F 29/04 (2013.01) [H01H 9/0016 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An on-load tap-changer for switching, without interruption, between winding taps of a tapped transformer, the on-load tap-changer comprising:
fixed contacts comprising:
a first fixed contact, which is configured to connect to a first winding tap of the winding taps of the tapped transformer; and
a second fixed contact, which is configured to connect to a second winding tap of the winding taps of the tapped transformer;
a first selector arm, which is configured such that it can contact each of the fixed contacts;
a second selector arm, which is configured such that it can contact each of the fixed contacts; and
a diverter switch configured to perform a switch from the first fixed contact to the second fixed contact of the on-load tap-changer;
a connection contact arranged additionally to the fixed contacts; and
an auxiliary contact, which is configured to selectively contact the connection contact or one of the fixed contacts,
wherein the connection contact is bridged with the second fixed contact, and
wherein the auxiliary contact is mechanically coupled to the first selector arm.