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:
Mar. 07, 2000
Filed:
Oct. 23, 1997
Applicant:
Inventors:
Marc Serpinet, Montchaboud, FR;
Laurent Previeux, Grenoble, FR;
Assignee:
Schneider Electric SA, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 936 ; 361 38 ;
Abstract
The current transformer comprises a magnetic circuit associated to a primary conductor and a secondary winding connected to a trip relay. The magnetic circuit comprises a mobile part and a fixed part. The mobile part goes from an open position to a closed position when a primary current flowing in the primary conductor exceeds a preset value. The change of position of the mobile part makes the magnetic flux in the magnetic circuit vary which induces a secondary current in the secondary winding to actuate the trip relay. Application, notably to trip devices and circuit breakers.