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:
Aug. 12, 2025
Filed:
Dec. 22, 2020
Hitachi Energy Ltd, Zürich, CH;
Jan Czyzewski, Cracow, PL;
Jedrzej Banaszczyk, Lodz, PL;
Darren Tremelling, Apex, NC (US);
Andrzej Rybak, Cracow, PL;
Krzysztof Kasza, Cracow, PL;
Lukasz Matysiak, Cracow, PL;
Elio Perigo, Wendell, NC (US);
Abstract
The present disclosure relates to a condenser bushing including a condenser core and electrically conductive field-grading layers, which are embedded in insulating material of the condenser core and arranged around a central channel for conductor extending along an axis defining an axial direction, while an electric connection is provided to at least one of the field-grading layers, wherein pairs of neighbouring field-grading layers with the insulation material between them form sections of the condenser core of axial lengths Lthrough Land with capacitances Cthrough C, characterized in that a shape of at least one of the field-grading layers deviates from cylindricality in order to reduce non-uniformity of electric field stress of the condenser bushing compared to a corresponding condenser bushing with the cylindrical field-grading layers forming sections of the axial lengths Lthrough Land with capacitances Cthrough C.