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:
Mar. 26, 2024
Filed:
May. 27, 2021
Applicant:
Hitachi Energy Ltd, Zürich, CH;
Inventors:
Assignee:
HITACHI ENERGY LTD, Zürich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/32 (2006.01); H01F 27/02 (2006.01); H01F 27/28 (2006.01);
U.S. Cl.
CPC ...
H01F 27/28 (2013.01); H01F 27/02 (2013.01); H01F 27/32 (2013.01);
Abstract
A three-phase transformer including a transformer housing, a shell-form five-limb transformer core wherein main limbs include two outer main limbs and a middle main limb, three coil arrangements including two outer coil arrangements each arranged around a respective one of the outer main limbs, and a middle coil arrangement arranged around the middle main limb. The outer coil arrangements have an inter-coil insulation configured to electrically insulate the coil arrangements from the transformer housing and from the respective other ones of the coil arrangements, and wherein no inter-coil insulation is provided to the middle coil arrangement.