Nozzle and contact arrangement for puffer type interrupter
US3970811A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Sep 16, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/7023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The insulation nozzle of a puffer type breaker has flexible contact fingers disposed along the walls of the nozzle upstream of the gas flow path through the nozzle. The flexible contact fingers engage a hollow tubular stationary contact which extends through the nozzle orifice when the interrupter is closed. A central arcing contact is fixed to the flexible contact fingers within the nozzle and projects into the interior of the stationary tubular contact when the contacts are closed. A plurality of main finger contacts are connected to the stationary contact, and slidably engage an outer main movable contact sleeve fixed to the movable arcing contact and the insulation nozzle. The movable contact sleeve forms a bridging connection between the main terminals of the interrupter when the interrupter is closed. The main bridging contacts disengage before the interior contact fingers within the nozzle disengage the stationary contact tube so that the outer fingers do not interrupt power currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.