The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2015
Filed:
Dec. 23, 2010
Oliver Brueckl, Waldmuenchen, DE;
Udo Hertel, Regensburg, DE;
Armin Hirthammer, Regensburg, DE;
Anatoli Saveliev, Zeitlarn, DE;
Oliver Brueckl, Waldmuenchen, DE;
Udo Hertel, Regensburg, DE;
Armin Hirthammer, Regensburg, DE;
Anatoli Saveliev, Zeitlarn, DE;
Maschinenfrabrik Reinhausen GmbH, Regensburg, DE;
Abstract
A tap changer with semiconductor switching elements for uninterrupted switching between winding taps of a tapped transformer has two load branches connected with the winding taps of the tapped transformer and that each comprise a respective mechanical main contact that in stationary operation conducts current of the respective load branch and produces an electrical connection with a load shunt. Each load branch also has parallel to the respective main contact a series circuit consisting of a further respective mechanical contact as well as a respective semiconductor switch. These semiconductor switches are electrically connected together at a side remote from the respective contacts and lead to a mechanical transfer contact whose other side is connected with the load shunt. A connection of the main contacts as well as the further mechanical contacts is effected by a movable contact support.