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:
Mar. 20, 2012
Filed:
Dec. 17, 2007
Günter Schwesig, Erlangen, DE;
Günter Schwesig, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for monitoring transmissivity of an energy transmission element for a protective earth conductor and an electrical machine with such transmissivity monitoring are provided. For a cost-effective solution for transmissivity monitoring, the protective earth conductor of a first circuit is connected on a first side of the energy transmission element via a connecting line to a ground of a second circuit wherein a potential-free voltage supply is connected between the protective earth conductor and ground on a second side of the energy transmission element. A current flows through the energy transmission element and the connecting line that is produced by the potential-free voltage supply. The transmissivity of the energy transmission element is monitored using the current flow by a monitoring element which is arranged between the protective earth conductor and ground on the second side of the energy transmission element.