Wire-wound apparatus and high-voltage pulse generating circuit using wire-wound apparatus
US7065122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2003 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Nov 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/321
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electric field easing members (corona rings) for easing concentration of electric fields caused at edges of a core are disposed between the core and a winding to form a gap so to allow the presence of a cooling medium (insulating oil) between the top and bottom surfaces of the core and the electric field easing members. Thus, pressboards between the core and the electric field easing members become unnecessary, a wire-wound apparatus can be prevented from having a short service life due to the degradation of the pressboards, and the pressboards can be made to have a long service life because the electric field easing members are not heated by thermal conduction from the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.