Loadbreak separable connector
US5857862A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Mar 4, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S439/921
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A novel protective cap or elbow connector comprises a semi conductive insert which includes an additional volume of air which surrounds energized portions of the elbow connector or protective cap beyond what is necessary to accommodate a female bushing. During separation of the elbow connector or protective cap from the female bushing, the semiconductive insert stretches, which increases the volume of the interior space between the elbow connector or protective cap and the female bushing. Because the additional volume of air is provided, the reduction in pressure during separation is lessened, so that the dielectric strength of the air surrounding energized portions of the elbow connector or protective cap is maintained at a higher level. The increased dielectric strength of the air significantly reduces the possibility of a flashover occurring during separation of the elbow connector or protective cap from the female bushing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.