Impregnation and encapsulating material
US4787010A · kind A · utility
3Cited by
13References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1986 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Jun 4, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/221
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A capacitor in which the capacitive element is impregnated and encapsulated by a composition having a softening point above the normal operating temperature of the capacitor and below the temperature that would occur following a failure of the capacitive element (or in another aspect below the temperature at which the polypropylene film of a polypropylene film capacitor shrinks). In other aspects the composition is a blend of polybutene and polyethylene; and a method of impregnating a capacitor is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.