Flexible electrical line

A flexible electrical line, comprising:

• in a core, at least one sensor element;
• and
• leads composed of insulated electrical conductors which are surrounded by a common outer casing of insulation material,
• wherein the sensor element is composed of always two leads each having an insulated electrical conductor with a tension-proof central element, which are stranded together into a unit with two filler strands composed of insulating material,
• wherein the unit is surrounded by a banding of insulation material over which a casing is arranged,
• wherein, arranged in the core of the line, are arranged as electrical leads, three phase leads, which are stranded together and serve for transmitting energy with voltages above 1 kV, wherein the phase leads each have at least one inner conductive layer surrounding the conductor and an insulation above the conductor layer,
• wherein the conductors of the leads of the sensor element are composed of copper wires which surround the tension-proof central element in two layers with oppositely directed stranding directions,
• wherein the insulation of the leads of the sensor element is composed of a cross-linked elastomer material which is applied by extrusion and has a dielectricity number of at least 6.0 at room temperature,
• wherein the unit of leads and filler strands which are stranded together are surrounded by a coating of an electrically conducted polymer material, and
• wherein, the core of the line composed of phase leads and sensor element is surrounded by a common inner casing produced by extrusion, above which the outer casing is arranged.