Capacitor with insulation composition showing thermo-reversible oil-to-gel-transition
US11657973B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Mar 11, 2019 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Nov 12, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/015
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wet capacitor is provided, and the use of an insulation fluid composition in such a capacitor. The capacitor includes a package of a metal foil and a polymeric insulating film, or of a metallized polymeric film, wherein the insulation composition includes a synthetic or natural aromatic oil and a polymer. The insulation composition is configured to undergo a thermo-reversible oil-to-gel transition at a predefined gel-point temperature. Further, methods of producing such wet capacitors are provided, optionally including additional filling materials, and methods of sealing leaks in such capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.