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. 06, 1977
Filed:
Nov. 16, 1976
Teruo Fukuda, Hitachi, JA;
Tetuo Otomo, Hitachi, JA;
Hitachi, Ltd., , JA;
Abstract
Disclosed is a transformer of a large capacity for an ultra-high voltage which comprises a core leg coaxially wound sequentially with at least a low voltage winding, a high voltage winding composed of an upper and a lower winding section operated in a parallel connection and having a lead conductor led out from a center portion of the high voltage winding and extending to a terminal to be connected to a high voltage transmission line as well as connection leading-out wires taken out from the top and bottom end portions of the high voltage winding, and an upper and a lower tap winding disposed vertically spaced from each other with a predetermined distance and respectively connected to the upper and lower winding sections of the high voltage winding so as to be operated in a paralled connection therewith. Each of the upper and lower tap windings are disposed such that the magnetic center of each of the tap windings may be located at a height which corresponds to a value in the range of 55 to 65% of the height between the center portion of the high voltage winding at which the lead wire is led out and either ends thereof, whereby axial mechanical forces produced electro-magnetically in the tap windings are significantly reduced and the manufacture of the transformer is facilitated with an improved reliability thereof.