Multiphase gas expansion circuit breaker for gas-insulated metalclad cell
US4816624A · kind A · utility
6Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Dec 29, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B11/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker includes a plurality of poles disposed parallel side by side in a sealed enclosure (18) filled with SF6 insulating gas. The housing of each arc extinguishing chamber (22) comprises a metal shielding wall (52) designed to neutralize the influence of the magnetic stray fields of the neighbouring poles. The wall (52) can be made of conducting or ferromagnetic material, and enables correct entering of the arc favouring the expansion effect of the gas. Application: medium voltage electrical distribution substation. Refer to FIG. 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.