Switchgear
US8189325B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2008 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Jan 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B1/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switchgear case is partitioned into a high voltage bus bar chamber, which contains bus bars and cable heads, a high voltage device chamber containing circuit breakers and operation mechanisms and a low voltage control chamber containing a relay and measurement devices, etc. A rear wall of the case has a first suction port disposed at a lower part thereof, wherein the high voltage bus bar chamber, high voltage device chamber and the low voltage control chamber are communicated and air passing through the chambers is discharged from a first discharging port of the casing. The bus bars electrically connecting the high voltage devices in the high voltage device chamber and connecting bars connecting the adjoining bus bars and the cable heads are covered with solid insulators for solid-insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.