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. 03, 2007
Filed:
Jun. 26, 2003
Applicants:
David J. Fedirchuk, Ile des Chenes, CA;
Gang LI, Winnipeg, CA;
Zhiying Zhang, Winnipeg, CA;
Dean S. Ouellette, Winnipeg, CA;
Inventors:
David J. Fedirchuk, Ile des Chenes, CA;
Gang Li, Winnipeg, CA;
Zhiying Zhang, Winnipeg, CA;
Dean S. Ouellette, Winnipeg, CA;
Assignee:
Nxt Phase T & D Corporation, Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A protection relay for a power line system that employs current transformers for detecting current on a bus is provided with a fault trip scheme that includes transformer current saturation detection so as to avoid false tripping due to temporary transformer current saturation.