Patent application number | Description | Published |
20120103766 | ON-LOAD TAP CHANGER WITH ENERGY STORAGE MECHANISM - The invention relates to an on-load tap changer having an energy storage device, by means of which an output shaft is rotatable in spurts. According to the invention, in addition to the actual energy storage spring or the actual energy storage springs, at least one further spring is provided, which absorbs/releases energy after the activation of the energy storage mechanism, whereby the torque curve can be optimised. | 05-03-2012 |
20130112541 | LOAD TRANSFER SWITCH FOR A TAP CHANGER - The present invention relates to a load transfer switch for a tap changer, comprising permanent main contacts that switch powerlessly for each phase. The general inventive concept lies in connecting the fixed permanent main contacts of side A or B of the load transfer switch by means of a movable rail-shaped permanent main contact that establishes an electrical connection to the corresponding permanent main contacts of the load line only in the end positions of the movable rail-shaped permanent main contact and in addition only provides for a single deflection for actuation, which connects in a purely compressive manner the plurality of contact fins of the corresponding fixed permanent main contact, which contact fins are connected in a resilient, articulated manner. | 05-09-2013 |
20130213776 | TAP CHANGER HAVING A FREEWHEEL - The invention relates to a stepping switch ( | 08-22-2013 |
20130220782 | TAP CHANGER AND VACUUM SWITCHING TUBE FOR SUCH A TAP CHANGER - A tap changer for uninterrupted switching over between winding taps of a tapped transformer has two load branches each for a respective phase to be switched. Each load branch has a vacuum switching contact acting as main contact and parallel thereto at least one series connection of a switch-over resistance and a respective further vacuum switching contact. The two load branches are connected with a common load shunt or connectable by mechanical switching elements. Two respective vacuum switching contacts of each load branch are constructionally combined to form a single vacuum switching tube with two separate movable contacts actuatable independently of one another and a common fixed contact. The common fixed contact is connected with the common load shunt or connectable mechanical switching contacts. | 08-29-2013 |
20140360983 | STEPPING SWITCH WITH VACUUM SWITCHING TUBES - The invention relates to a stepping switch with vacuum switching tubes ( | 12-11-2014 |
20150008104 | ON-LOAD TAP CHANGER WITH TWO VACUUM INTERRUPTERS AND DRIVE THEREFOR - An on-load tap changer ( | 01-08-2015 |
20150068877 | ARRANGEMENT OF VACUUM SWITCHING TUBES IN A LOAD TRANSFER SWITCH - Arrangement of vacuum switching tubes ( | 03-12-2015 |