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:
Sep. 04, 2018
Filed:
Sep. 08, 2014
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Tetsuji Kato, Tokyo, JP;
Kohji Maki, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); G01R 31/34 (2006.01); H02K 11/27 (2016.01);
U.S. Cl.
CPC ...
G01R 31/34 (2013.01); H02K 11/27 (2016.01);
Abstract
An object is to conduct an insulation degradation diagnosis with a simple configuration. An insulation diagnostic system includes a current detection sensorthat is installed, for a coilof at least one phase of a Δ connection type rotating machine in which current flows in the reverse direction at a winding start position and a winding end position, such that the current detection sensorsurrounds a current path flowing into a leader line at the winding start of the coiland a current path flowing out from a leader line at the winding end of the coil