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:
Oct. 02, 2018
Filed:
Apr. 12, 2017
Hitachi, Ltd., Tokyo, JP;
Li Lu, Tokyo, JP;
Kenichi Kawamura, Tokyo, JP;
Hiroshi Miyao, Tokyo, JP;
Hiroshi Morita, Tokyo, JP;
Satoshi Ichimura, Tokyo, JP;
Jun Nukaga, Tokyo, JP;
Shinji Fujita, Tokyo, JP;
Kohei Yamaguchi, Tokyo, JP;
Hideki Ogata, Tokyo, JP;
Masato Suzuki, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A stationary induction electrical apparatus includes a disc winding having a structure in which a flow path for a cooling medium is provided between coils where a low voltage is generated between shield wires, an L-shaped insulation barrier is provided between coils where a high voltage is generated between the shield wires, a horizontal portion of the L-shaped insulation barrier is provided so as to closely contact an upper surface or a lower surface of the disc coil, a tip end portion in an axial direction of the L-shaped insulation barrier is provided so as to closely contact an inner surface of the disc coil which is adjacent to a pressboard insulation cylinder, and a height of the tip end portion in the axial direction is lower than a thickness of one coil.