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:
Jun. 07, 2022
Filed:
Mar. 07, 2018
Applicant:
Hitachi Energy Switzerland Ag, Baden, CH;
Inventors:
Antonio Nogues Barrieras, Saragossa, ES;
Rafael Murillo, Saragossa, ES;
Martín Carlos Roy, Saragossa, ES;
Lorena Cebrian, Saragossa, ES;
Luis Sanchez Lago, Saragossa, ES;
Assignee:
Hitachi Energy Switzerland AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/12 (2006.01); H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 27/32 (2006.01);
U.S. Cl.
CPC ...
H01F 27/12 (2013.01); H01F 27/24 (2013.01); H01F 27/2876 (2013.01); H01F 27/324 (2013.01);
Abstract
A non-liquid immersed transformer including a magnetic core having a winding axis and at least two coil windings wound around the magnetic core along the winding axis. One or more cooling tubes made of dielectric material are arranged inside at least one of the coil windings to cool down the coil winding using dielectric fluid flowing through the dielectric cooling tubes. Each cooling tube is wound continuously forming one or more complete loops around the core.