Fluid-filled electric cable joints and terminations with filtering means
US4330681A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1980 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Aug 18, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G15/25
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Risk that metal particles carried by flowing oil in an oil-filled cable joint or termination will settle along an oil path between a cable conductor and the space bounded by the joint or termination enclosure is substantially reduced by making at least part, and preferably the whole, of the boundary wall of the path of a fibrous insulating material, e.g., paper, and by providing, at at least one end of the path, for filtering from flowing oil particles of metal and other undesirable materials that may be carried by the oil, filtering means comprising, in combination, electrically insulating filtering material and a fine metallic mesh, serving as an electrical screen. Fibres of the boundary wall so formed protrude into the path and restrict mobility of metal particles carried by the flowing oil; some metal particles will penetrate the fibrous insulating material which will also absorb from the oil some types of dissolved contamination, e.g., moisture. The oil path may extend through a body of fibrous insulating material built up around the conductor joint or termination or, over at least a part of its length, it may be formed between such a body of fibrous insulating material and a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.