Compressed gas, high tension circuit breaker, with operating energy assisted by the thermal effect of the arc
US4650941A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1986 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Jan 13, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/908
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a compressed gas high tension circuit breaker in which the energy required for operation is assisted by the thermal effect of the arc, the circuit breaker comprising fixed main contacts and fixed arcing contacts, a moving assembly comprising moving main contacts and moving arcing contacts, a blast nozzle, and a thermal volume in which the gas pressure increases under the effect of heating due to the arc which extends between the arcing contacts when the separate, the circuit breaker including the improvement of means for responding to the pressure existing in said thermal volume (3, 35) to exert a greater force on the moving assembly (9) than the forces exerted thereon due to its resistance to movement, said means including a differential piston arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.