Process for manufacturing a power cable includes: providing a power cable core having an electric conductor; providing a copper foil; providing a protective strip over the power cable core, the protective strip having a radially inner and outer surface and being made of copper with a coating; folding the copper foil around the power cable core so as to bring two longitudinal copper foil rims to contact one to the other; welding the two contacted longitudinal copper foil rims thus obtaining a copper sheath in form of a tube with a welding seam; reducing the diameter of the copper sheath to put it into direct contact with the power cable core and the protective strip; heating the protective strip and the copper sheath at a temperature higher than the melting temperature of the coating of the strip so that the coating fuses in the welding seam.

A cable with an abnormality precursor detection function includes: one or more target electric wires each including a corresponding one of electric wire conductors and an electric wire coating that covers an outer periphery of the electric wire conductor; one or more detection wires each including a corresponding one of detection wire conductors and a detection wire coating that covers an outer periphery of the detection wire conductor; and a sheath that covers an outer periphery of an electric wire group including the one or more target electric wires and the one or more detection wires.

A cable with an abnormality precursor detection function includes: one or more target electric wires each including a corresponding one of electric wire conductors and an electric wire coating that covers an outer periphery of the electric wire conductor; one or more detection wires each including a corresponding one of detection wire conductors and a detection wire coating that covers an outer periphery of the detection wire conductor; and a sheath that covers an outer periphery of an electric wire group including the one or more target electric wires and the one or more detection wires.

A surface scanner for surface defect detection of a cable comprises a measuring part and an analysis part, the measuring part comprises non-contact distance measurement sensors, the cable is positionable between the sensors such that beams of the sensors are directable to the outer surface of the cable to sample areas at a circumference of the cable for a length of the outer surface (L) of the cable in a run direction (x) of the cable for providing measurement data, and the analysis part comprises a receiver for the measurement data, a processor for processing the measurement data providing defect detection data and a continuous 3D topographic map of the outer surface of the cable, the analysis part comprising a neural network trained for detecting surface defects of the cable and outputting surface defects detection data. The invention also relates to an arrangement and a method for surface defect detection of a cable.

A surface scanner for surface defect detection of a cable comprises a measuring part and an analysis part, the measuring part comprises non-contact distance measurement sensors, the cable is positionable between the sensors such that beams of the sensors are directable to the outer surface of the cable to sample areas at a circumference of the cable for a length of the outer surface (L) of the cable in a run direction (x) of the cable for providing measurement data, and the analysis part comprises a receiver for the measurement data, a processor for processing the measurement data providing defect detection data and a continuous 3D topographic map of the outer surface of the cable, the analysis part comprising a neural network trained for detecting surface defects of the cable and outputting surface defects detection data. The invention also relates to an arrangement and a method for surface defect detection of a cable.

The invention provides a polymer composition comprising a low density polyethylene (LDPE); polypropylene (PP) and a compatibiliser. The invention also relates to cables comprising said polymer composition and the use of the polymer composition in the manufacture of an insulation layer of cable.

The invention provides a polymer composition comprising a low density polyethylene (LDPE); polypropylene (PP) and a compatibiliser. The invention also relates to cables comprising said polymer composition and the use of the polymer composition in the manufacture of an insulation layer of cable.

An electrical cable having a conductor having a protecting sheath and/or jacket comprising a base polymer (such as a thermoplastic or thermoset) having an abrasion reducing agent, a lubricant, a hydrophobic agent, and/or a UV protecting agent mixed therein. The resulting cable jacket and/or cable sheath defines an outer surface having abrasion reduction properties, lubricating properties, hydrophobic properties, and/or UV protecting properties.

A method of manufacturing a cable includes at least one elongated electrically conducting element and at least one composite layer surrounding the elongated electrically conducting element. The composite layer is obtained from at least one step of impregnation of a non-woven fibrous material with a geopolymer composition.

A method of manufacturing a cable includes at least one elongated electrically conducting element and at least one composite layer surrounding the elongated electrically conducting element. The composite layer is obtained from at least one step of impregnation of a non-woven fibrous material with a geopolymer composition.