Gaseous insulators for high voltage electrical equipment
US4175048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1977 |
| Grant date | Nov 20, 1979 |
| Priority date | — |
| Expiry date | Sep 6, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B13/055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Gaseous insulators comprise compounds having high attachment cross sections for electrons having energies in the 0-1.3 electron volt range. Multi-component gaseous insulators comprise compounds and mixtures having overall high electron attachment cross sections in the 0-1.3 electron volt range and moderating gases having high cross sections for inelastic interactions with electrons of energies 1-4 electron volts. Suitable electron attachment components include hexafluorobutyne, perfluorobutene-2, perfluorocyclobutane, perfluorodimethylcyclobutane, perfluorocyclohexene, perfluoromethylcyclohexane, hexafluorobutadiene, perfluoroheptene-1 and hexafluoroazomethane. Suitable moderating gases include N.sub.2, CO, CO.sub.2 and H.sub.2. The gaseous insulating mixture can also contain SF.sub.6, perfluoropropane and perfluorobenzene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.