Sealed and cooled enclosure with voltage isolation
US7923630B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2008 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | May 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K5/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An enclosure (4) for electrical apparatus (6) has a sealable outlet (8) for partially evacuating the enclosure and a sealable inlet (9)for partially filling the enclosure with a liquid (7) having a vapor pressure at operating temperatures of the apparatus suitable to enhance electrical isolation of the electrical apparatus and suitable to provide convective cooling of the electrical apparatus. The vapor preferably provides a voltage hold-off sufficiently high for operating voltages of the electrical apparatus and has a relative permittivity sufficiently low to prevent stray capacitance in the electrical apparatus above a predetermined limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.