Power cable
US5864094A · kind A · utility
Inventor
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B11/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical power cable includes a central ground conductor surrounded by an insulating material layer. An inner grounded shield is formed on the surface of the ground conductor or between the ground conductor and line and neutral conductors. A plurality of insulated line conductors and a plurality of insulated neutral conductors are circumferentially disposed in an annular arrangement about an insulation layer on the inner shield. The plurality of line and neutral conductors are each disposed circumferentially side-by-side in separate groups of line and neutral conductors. The total cross-sectional area of each group of line conductors and neutral conductors is substantially equal to the total cross-sectional area of a single large conductor of equivalent ampere rating. An outer shield is disposed about the line and neutral conductors and covered by an outer insulating layer. PVC insulation surrounds all of the conductors and is used to form the shields and other insulating layers to minimize movement of the individual conductors within the cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.