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:
Jun. 28, 2011
Filed:
Jun. 28, 2008
Mehri Varghai, Solon, OH (US);
James Francis Domo, Chagrin Falls, OH (US);
Mehri Varghai, Solon, OH (US);
James Francis Domo, Chagrin Falls, OH (US);
Thomas & Betts International, Inc., Wilmington, DE (US);
Abstract
A method for identifying a fault condition associated with a power line conductor of an electrical power distribution network. The method determines if a load current carried by the conductor is above a minimum load current, determines a learned phase angle relationship between the load current and a source signal, determines a load current magnitude, determines a real-time phase angle relationship between the load current and the source signal and indicates a fault condition when the real-time phase angle relationship is within a predetermined number of angular degrees of the learned phase angle relationship and when the load current magnitude exceeds a fault-indicating current.