DC electric power cable
US4626618A · kind A · utility
103Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1985 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | May 3, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/292
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC power cable includes a conductor and an insulation of a thermoplastic resin formed around the conductor. The insulation contains carbon black in an amount of about 0.2 to about 5% of the total weight of the thermoplastic resin and the carbon black, and the ratio of mineral oil absorption (cc/100 g) to specific surface (m.sup.2 /g) in the carbon black is not less than 0.7. The carbon black has the hydrogen content of not more than 0.6% by weight. The specific surface is measured by BET equation. The carbon black has a particle size of 10 to 100 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.