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:
Jan. 20, 2004
Filed:
Aug. 21, 2001
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 3/820 ;
U.S. Cl.
CPC ...
H01F 3/820 ;
Abstract
In a three-phase current transformer, a plate adaptor includes first to third coil insertion slots and is a magnetic shield. First to third Rogowskii coils are arranged in the first to third coil insertion slots. The metal adaptor is fixed with a phase-to-phase magnetic shield and an outer peripheral magnetic shield. An end magnetic shield is fixed to an end portion of the phase-to-phase magnetic shield.