Condenser bushing
US12387859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2020 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Sep 16, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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 L1 through Ln and with capacitances C1 through Cn, 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 L1 through Ln and with capacitances C1 through Cn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.