Vacuum cartridge for an electrical protection apparatus such as a switch or a circuit breaker
US8445804B2 · kind B2 · utility
9Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Jun 26, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/66292
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cartridge having at least three shields including a mid-potential shield between two contacts and at least one partial shield between a mid-potential shield and one of the contacts, the distance between the mid-potential shield and the contacts being such that the electric field present at the edge of the contact extends from the contact to the partial shield surrounding it, or vice-versa from the partial shield to the contact, depending on the polarity of the voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.