Electric power cable
US4675470A · kind A · utility
7Cited by
7References
47Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 26, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Jun 26, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B7/0241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An oil-immersion electrically insulated cable of high performance is constructed by wrapping a conductor with insulation formed by winding on the conductor polypropylene film having a density in the range of 0.905 to 0.915 g/cm.sup.3, a birefringence in the range of 0.020 to 0.035, a ratio of strengths in two axial directions (tensile strength in the longitudinal direction/tensile strength in the lateral direction) in the range of 5 to 15, and impregnating the insulating layer with an insulating oil, preferably DDB oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.