Interrupting chamber of a circuit-breaker having two compression volumes
US8044318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2008 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | May 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/908
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current interrupting chamber comprising a moving assembly movable axially between a start position and an end position of an operation of opening the circuit-breaker. The current interrupting chamber includes a first compression chamber; a hollow drive tube having ports for bringing the interior of the drive tube into communication with the outside of the current interrupting chamber; a second compression chamber; and a structure for obstructing the ports of the drive tube from the start position of an operation of opening the circuit-breaker and up to an intermediate position which is reached between the position of separation of two arcing contacts from each other and the end position of an operation of opening the circuit-breaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.