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:
Apr. 15, 2008
Filed:
Oct. 18, 2005
Robert T. Elms, Monroeville, PA (US);
Kevin L. Parker, Pittsburgh, PA (US);
Robert T. Elms, Monroeville, PA (US);
Kevin L. Parker, Pittsburgh, PA (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An arc fault circuit interrupter includes a line terminal, a load terminal, separable contacts electrically connected between the line terminal and the load terminal, and a current sensor structured to sense current associated with the load and flowing between the line terminal and the load terminal and through the separable contacts. The sensed current includes a plurality of line cycles. An arc fault detection circuit is structured to provide series arc protection and to generate a trip signal responsive to the sensed current from the current sensor. The arc fault detection circuit collects a plurality of samples of the sensed current over the line cycles, determines a single current transient associated with energization of the load, and responsively inhibits the series arc protection. An operating mechanism is structured to open the separable contacts responsive to the trip signal.