Medium voltage circuit breaker with operating mechanism providing reduced operating energy
US5239150A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | May 28, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/122
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A medium voltage circuit breaker, including first and second arcing contacts, the first arcing contact being longitudinally slidable with respect to the second arcing contact between open and closed positions, first and second main contact, the first main contact being movable with respect to the second main contact between open and closed positions, a sealed enclosure filled with a high dielectric strength gas and housing the first and second arcing and main contacts, and operating mechanism for closing the first and second arcing contacts before the first and second main contacts close and for opening the first and second arcing contacts after the first and second main contacts open. The operating mechanism is mechanically coupled to the first arcing and the first main contacts and comprises a compressible linkage coupled to the first arcing contact. The compressible linkage is compressible a predetermined distance against an urging force provided by a spring as the first and second arcing contacts close, thereby compressing the spring. The operating mechanism is adapted to reduce compression of the spring and reduce a contact force between the first and second arcing contacts af…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.