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:
Dec. 05, 2017
Filed:
Mar. 25, 2013
Alfred Bieringer, Geiselhoering, DE;
Harald Hochmuth, Nittenau, DE;
Dominik Plitzko, Regensburg, DE;
Sebastian Schmid, Sinzing, DE;
Alfred Bieringer, Geiselhoering, DE;
Harald Hochmuth, Nittenau, DE;
Dominik Plitzko, Regensburg, DE;
Sebastian Schmid, Sinzing, DE;
MASCHINENFABRIK REINHAUSEN GMBH, Regensburg, DE;
Abstract
The invention relates to a method for monitoring an on-load tap changer that is used to switch between winding taps of a tapped transformer without interrupting the load current and is actuated using a motor drive. According to the invention, prior to the actual load switching process, the on-load tap changer is initially moved a short distance, preferably against the direction in which the load is subsequently switched. In said initial process, it is verified whether the on-load tap changer has moved, i.e. has left its previous stationary position, and/or whether the torque on the motor drive has exceeded a predefined threshold value. The actual load switching process takes place only once the test has yielded a positive result.