Medium or high tension circuit breaker having end-to-end arcing contacts
US5155314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Apr 2, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/91
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gas filled medium tension circuit breaker includes an insulating case with a fixed first arcing contact connected to a first circuit breaker terminal. The circuit breaker includes moving equipment formed of a slidable first tube axially displaceable by a drive rod connected to one end of the slidable first tube. The slidable first tube is connected by contacts to a second circuit breaker terminal. The first tube and a fixed second tube define a blast volume. The second tube is extended by a blast nozzle. A second arcing contact is defined by a third tube which slides inside a small diameter portion of the slidable first tube, with that small diameter portion defining with the second tube the blast volume. A larger diameter second portion of the slidable first tube carries the blast nozzle. The two portions of the slidable first tube interconnect radially by a substantially annular portion having through holes and a shoulder. The annular portion constitutes a blast piston which moves axially within the blast volume. The third tube includes a radial flange proximate to the fixed first arcing contact. A compression coil spring has one end bearing against the flange. A second end bea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.