Energy cable
US7999188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2007 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Jun 28, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/441
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cable for transporting or distributing electric energy, especially medium or high voltage electric energy, includes at least one electrical conductor, at least one electrically insulating layer surrounding the electrical conductor, and at least one sheath surrounding the electrically insulating layer, wherein the sheath includes 65% to 95% by weight of at least one thermoplastic ethylene polymer; 5% to 35% by weight of at least one plasticizing agent, the percentages being expressed with respect to the total weight of the sheath. The above sheath guarantees improved flexibility without impairing mechanical properties and particularly thermopressure resistance, which is essential to preserve shape and integrity of the screen layer during cable installation and use at high operating temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.