On-load tap changer and method for actuating an on-load tap changer

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.