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:
Feb. 26, 2008
Filed:
Apr. 01, 2004
Jean-pierre Dupraz, Bressolles, FR;
Houria Siguerdidjane, Bures sur Yvette, FR;
Farah Boudaoud, Creteil, FR;
Patrick Bastard, Gif sur Yvette, FR;
Jean-Pierre Dupraz, Bressolles, FR;
Houria Siguerdidjane, Bures sur Yvette, FR;
Farah Boudaoud, Creteil, FR;
Patrick Bastard, Gif sur Yvette, FR;
Areva T&D SA, Levallois Perret Cedex, FR;
Abstract
A method for determining the reclose time of a circuit breaker on a three-phase high-voltage electric network after separation of contactsA,A,B,B,C,C in the presence of a fault on one of the three phases A, B or C includes measuring voltages UL, ULand UL, measuring voltage US,determining the voltage US, US, and US, calculating the differences UL, ULand UL, calculating the differences US, US, and US. From these measurements and calculations, a determination of the reclose time is made on the basis of the voltage differences.