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. 22, 2020
Filed:
Feb. 03, 2017
Siemens Aktiengesellschaft, Munich, DE;
Karsten Ahnert, Chemnitz, DE;
Gernot-Dirk Almen, Erlangen, DE;
Norbert Fiedler, Chemnitz, DE;
Bernd Flor, Feuchtwangen, DE;
Franz Nagy, Wilhermsdorf, DE;
Nico Wohlrab, Großolbersdorf, DE;
Albrecht Wolf, Grüna, DE;
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Abstract
The invention relates to a motor starter () for an electric motor (), wherein the motor starter () comprises a first and a second phase (). Said motor starter and electric motor each have an associated switching apparatus () which each have an electromechanical switch () and a semiconductor switch () connected to form a bypass circuit. The electromechanical switches () and the semiconductor switches () are designed to be separately operable by a control unit (), and the first and the second phase () are connected to a passive overcurrent protection means (). The passive overcurrent protection means () has a fuse () for each phase. According to the invention, a measuring apparatus () is arranged in at least one of the phases () along the phase direction directly between the passive overcurrent protection means () and at least one of the switching apparatuses (). The invention further relates to diagnosis methods () with which defects in the motor starter () can be diagnosed during an activation sequence.