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. 17, 2012
Filed:
Sep. 08, 2006
Ryan W. Swartzendruber, Prospect Heights, IL (US);
Laurence Virgil Feight, Island Lake, IL (US);
Tyson J. Salewske, Vernon Hills, IL (US);
Ryan W. Swartzendruber, Prospect Heights, IL (US);
Laurence Virgil Feight, Island Lake, IL (US);
Tyson J. Salewske, Vernon Hills, IL (US);
Schweitzer Engineering Laboratories, Inc., Pullman, WA (US);
Abstract
A faulted circuit indicator utilizes digitized fault indication curves to determine if a fault has occurred in a monitored conductor. Fault indication curves are intended to be similar to trip curves of common power protection devices, and consist of a plurality of associated fault current levels and fault times. The faulted circuit indicator only displays a fault when the current within the monitored conductor exceeds one of the fault current levels for its associated fault time. This results in more accurate fault detection through the ability to distinguish between small and large amplitude faults coupled with the flexability of a fault indicator suitable for use on many different power systems.