Power cable with high torsional resistance

Abstract

A power cable includes at least two power conductors, at least one earth conductor and a tubular outer jacket surrounding the power conductors and earth conductor, each power conductor including a conductive core and an insulating layer surrounding said conductive core, the power conductors being twisted and contacting each other, the earth conductor having a diameter smaller than the power conductors and being positioned in the interstitial area between two adjacent power conductors and the outer jacket. The earth conductor contacts the two power conductors along two respective contact lines and the outer jacket along an extrados portion facing outward with respect to the cable. The outer jacket has substantially constant thickness, the lateral surfaces of the earth conductor being free from constraints between the contact lines with the power conductors and the extrados contacted by the outer jacket.

Dependencies are inferred from the claim text.