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:
Jan. 07, 2014
Filed:
Feb. 06, 2010
Oliver Brueckl, Waldmuenchen, DE;
Dieter Dohnal, Lappersdorf, DE;
Hans-henning Lessmann-mieske, Neutraubling, DE;
Oliver Brueckl, Waldmuenchen, DE;
Dieter Dohnal, Lappersdorf, DE;
Hans-Henning Lessmann-Mieske, Neutraubling, DE;
Maschinenfabrik Reinhausen GmbH, Regensburg, DE;
Abstract
The invention relates to an on-load tap changer comprising semiconductor switching elements for uninterrupted switching between fixed tap changer contacts which are electrically connected to winding taps of a tapped transformer. Each of the fixed tap changer contacts can be connected to a charge diverter either directly or, during switching, via the semiconductor switching elements that are connected therebetween. According to the invention, the charge diverter has fixed, divided diverting contact pieces in order for the semiconductor switching elements to be electrically isolated from the transformer winding during stationary operation.