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. 26, 2017
Filed:
Aug. 20, 2013
Siemens Aktiengesellschaft, Munich, DE;
Dirk Hertz, Fichtenhof, DE;
Marco Schönenberg, Kuemmersbruck, DE;
Helene Steuer, Nuremberg, DE;
Stefan Zitzler, Schwandorf, DE;
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Abstract
An embodiment relates to a switchgear for a single-phase motor and a three-phase motor, the switchgear including a processing unit and a first, second and third current path, the first and third current path each including a current transformer. The processing unit is adapted to detect the current Iof the first current path and the current Iof the third current path. To provide a cost-effective switchgear for a one-phase motor and a three-phase motor which is adapted to identify the failure of every single phase in the three-phase operation and a phase failure in the one-phase operation, the processing unit is designed such as to detect the currents I, Iof the first and third current path and to determine, based on the phase shift between the detected currents I, Iof the first and third current path in which operating mode the switchgear is operated.