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:
Jul. 10, 2012
Filed:
Dec. 15, 2009
Jerome K. Hastings, Sussex, WI (US);
Joseph C. Zuercher, Brookfield, WI (US);
Birger Pahl, Milwaukee, WI (US);
Brian Thomas Pier, Milwaukee, WI (US);
Edward T. Gisske, Mount Horeb, WI (US);
Jerome K. Hastings, Sussex, WI (US);
Joseph C. Zuercher, Brookfield, WI (US);
Birger Pahl, Milwaukee, WI (US);
Brian Thomas Pier, Milwaukee, WI (US);
Edward T. Gisske, Mount Horeb, WI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A direct current arc fault circuit interrupter includes separable contacts and a trip circuit to trip open the contacts. The trip circuit includes a number of alternating current sensors structured to sense a current flowing through the separable contacts, a number of filter circuits cooperating with the AC current sensors to output a number of AC signals, a number of peak detectors cooperating with the filter circuits to output a number of peak current signals, and a processor cooperating with at least the peak detectors. The processor inputs the number of peak current signals as a plurality of peak current signals or inputs the number of peak current signals and determines the plurality of peak current signals. The processor also determines if the peak current signals exceed corresponding predetermined thresholds for a predetermined time, and responsively causes the contacts to trip open.