US 12,451,299 B2
On-load tap changer and method for actuating an on-load tap changer
Christian Hammer, Regensburg (DE)
Assigned to MASCHINENFABRIK REINHAUSEN GMBH, Regensburg (DE)
Appl. No. 18/003,372
Filed by Maschinenfabrik Reinhausen GmbH, Regensburg (DE)
PCT Filed Jun. 28, 2021, PCT No. PCT/EP2021/067691
§ 371(c)(1), (2) Date Dec. 27, 2022,
PCT Pub. No. WO2022/017732, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 102020119344.0 (DE), filed on Jul. 22, 2020.
Prior Publication US 2023/0141822 A1, May 11, 2023
Int. Cl. H01H 9/00 (2006.01)
CPC H01H 9/0016 (2013.01) [H01H 9/0027 (2013.01); H01H 2009/0061 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An on-load tap-changer for switching, without interruption, between winding taps of a tap-changing transformer, comprising:
a diverter switch for performing a switch-over from a first fixed contact to a second fixed contact of the on-load tap changer;
a selector for preselecting, without power, the first fixed contact and the second fixed contact; and
a first controller, wherein:
the diverter switch, for the switch-over, comprises a plurality of semiconductor switching elements and a plurality of mechanical switching elements,
the selector comprises a first selector arm and a second selector arm, which are actuatable independently of one another and can contact each of the fixed contacts, and
the first controller is configured to trigger a switch command and to actuate the first selector arm and the second selector arm and the plurality of mechanical switching elements by a motor drive,
wherein the on-load tap changer comprises a second controller which is configured to actuate the plurality of semiconductor switching elements, and
wherein the first controller is further configured such that, during the switch-over, the first controller actuates the motor drive depending on the second controller.