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:
May. 28, 2013
Filed:
Aug. 29, 2006
Ratan Das, Wilkes Barre, PA (US);
Sethuraman Ganesan, Bangalore, IN;
John M. Peterson, Lansdale, PA (US);
Ratan Das, Wilkes Barre, PA (US);
Sethuraman Ganesan, Bangalore, IN;
John M. Peterson, Lansdale, PA (US);
ABB Technology AG, Zurich, CH;
Abstract
The present invention is directed to a method and a system for fault detection analysis in a power device which is operatively associated with a differential protection unit. The power device has one input side and one output side through which an input current and an output current flows into and out from it, respectively. Signals representative of the input and output currents are processed in order to verify if an occurring fault is external to the power device. Under a condition of an external fault, the differential protection unit is disabled for a determined interval of time.