Nexans

Michel Martin

Daniel Guery

Michael Meyer

Claus-Friedrich Theune

Sophie Barbeau

Corinne Poulard

Jacques Lobry

Michael Alexandre

Philippe Dubois

Guy Guerlement

Fabrice Dubouloz

An electric cable () includes at least one composite reinforcement element () including one or more reinforcement element(s) at least partially embedded in an organic matrix. A coating () surrounds the composite reinforcing element(s) (). The coating () is sealed all around the composite reinforcing element(s) (). At least one conducting element () surrounds the coating (), where the thickness of the sealed coating () does not exceed 3000 &#x3bc;m.

High voltage electric transmission cable

The invention concerns an electric power transmission cable, particularly for an overhead power line, comprising at least one central composite ring () formed of fibers impregnated by a matrix, of which the specific breaking strength is greater than 0.4 MPa&#xb7;m/kg and at least one layer of conductive wires () nested within one another, made of aluminum or an aluminum alloy and windings around said ring (), said cable having an outer diameter at ambient temperature called the initial diameter (D) and the ratio between the thermal expansion coefficient of the conductive wires () and that of the central ring () is greater than three. According to the invention, said conductive wires () nested within one another are of a geometry such that the increase in the outer diameter of one length of said cable shorter than 45 m, during an increase of temperature lasting two to four minutes, from ambient temperature to a temperature between 150 and 240&#xb0; C., is less than or equal to 10% of the initial diameter (Di), said cable being subject to a mechanical tension between 10% and 30% of the nominal breaking strength of the cable. The invention also concerns a conductive wire geometry enabling such a level of expansion of the diameter.

Electric power transmission cable particularly for an overhead line

A power transmission conductor, in particular for overhead electric lines, and including at least one central composite core made up of continuous fibers impregnated by a thermosetting resin matrix, the core being coated by at least one layer of insulating material, with aluminum or aluminum alloy conductor wires being wound around the core. The conductor comprises a short-circuiting device for short-circuiting said fibers with said conductor wires.

Power transmission conductor for an overhead line

Growing community of inventors

Thuin, Belgium

Michel Martin