A switching module is for an on-load tap-changer. The switching module has: a plate having a first side and a second side that is opposite the first side; a vacuum interrupter; and a bridge switch. The vacuum interrupter is on the first side, and the bridge switch, which is directly behind the vacuum interrupter, is on the second side.

An on-load tap-changer is for uninterrupted diverter switch operation between different winding taps of a tap-changing transformer. The on-load tap-changer includes: a diverter switch; and a selector. The selector has a contact carrier with a plurality of fixed contacts. The selector also has a planetary gear with a first ring gear, a first planetary gear, and a first sun gear. The first ring gear includes a first selector contact configured for contacting the fixed contacts.

An electrical switch for an on-load tap changer, said electrical switch comprising: at least three electrical contacts connected to a respective electrical conductor, a switch means configured to be movable between a plurality of positions, the switch means in each respective position physically contacting a respective combination of said electrical contacts to provide electrical contact between the electrical contacts in each respective combination of electrical contacts, the switch means including two electrically interconnected contacts or contact surfaces provided on a movable carrier element mounted on the operating member for movement along a said arcuate path, and the contacts or contact surfaces being provided at a same radial distance from the rotational axis and with a same spacing as the electrical contacts of each respective combination of electrical contacts.

An on-load tap-changer switches, without interruption, between winding taps of a tapped transformer. The on-load tap-changer includes fixed contacts, which include a first fixed contact, which is configured to connect to a first winding tap of the tapped transformer; and a second fixed contact, which is configured to connect to a second winding tap of the tapped transformer. The on-load tap-changer also includes 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 configured to selectively contact the connection contact or one of the fixed contacts.

An on-load tap changer module for an on-load tap changer, including a carrier, a diverter switch with a vacuum interrupter and a bridge switch, a selector, a change-over selector, and a drive module, wherein the diverter switch, the selector, and the change-over selector are arranged on the carrier and are activated centrally by the drive module.

A tap modification device is configured to modify an in-use signal tap to provide an enhanced frequency operating range. The device includes an operating frequency enhancement portion structurally configured to provide an enhanced operating frequency range of a signal tap. The operating frequency enhancement portion is structurally configured to provide the enhanced operating frequency range that extends up to at least about 1800 MHZ. The operating frequency enhancement portion is structurally configured to couple with an in-use signal tap so as to modify the in-use signal tap to operate in the enhanced frequency range.

An on-load tap-changer uninterruptedly switches between winding taps of a tap-changing transformer. The on-load tap-changer has: a diverter switch that switches over from a first to a second fixed contact; and a selector that powerlessly preselects the fixed contacts and has a first and second selector arm that are actuated independently and contact each of the fixed contacts. The diverter switch has: a main path with a mechanical switching element that connects the first selector arm to a load take-off lead; a first auxiliary path with a first semiconductor switching element that is parallel to the main path and connects the first selector arm to the load take-off lead, and a second auxiliary path with a second semiconductor switching element that connect the second selector arm to the load take-off lead.

An on-load tap-changer for switching, without interruption, between winding taps of a tap-changing transformer, including a diverter switch for performing a switch-over from a first to a second fixed contact, a selector for preselecting, without power, the first and second fixed contact, and a first controller, wherein the diverter switch has a plurality of semiconductor and mechanical switching elements, the selector has a first and 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 and second selector arm and the plurality of mechanical switching elements by a motor drive, wherein the on-load tap changer includes a second controller to actuate the plurality of semiconductor switching elements, and wherein during the switch-over the first controller actuates the motor drive depending on the second controller.

An on-load tap-changer includes: a main path with a first connection; and an auxiliary path with a second connection. One module is configured be connected to each of the first and second connections.

An on-load tap-changer includes: a tap-changer body and a driving mechanism fixed on the tap-changer body. The tap-changer body includes a housing, multiple insulation fixing plates, multiple turntables, each of which includes a sheave and a cam plate, the cam plate of which is rotatably connected to the insulation fixing plate, and the sheave of which is connected to the driving mechanism, multiple vacuum tubes fixed on the multiple insulation fixing plates, and multiple transmission mechanisms, each of which includes a lifting lever and a reverse spring. When the driving mechanism drives the sheave to regulate voltage, the cam plate is synchronously driven to rotate, and then the vacuum tube is driven by the lifting lever and the reverse spring to achieve on/off arc extinction, thereby achieving on-load voltage regulation.