Cable

1 . A cable for at least partial transmission of electrical energy, comprising:

multiple phase cores that are stranded to form a phase bundle, the phase bundle being electrically arranged with respect to a central longitudinal axis of the cable;

at least one further core running outside the phase bundle in the cable, the at least one further core and any further cores of the at least one further core in the cable are wound around the phase bundle with a direction of lay opposite to the direction of lay of the multiple phase cores in the phase bundle;

wherein the cable is designed to be at least electrically symmetrical at least with respect to a respective capacitive and/or inductive coupling of the at least one further core with in each case one of the multiple phase cores, in that the capacitive and/or inductive couplings between the at least one further core and in each case one of the multiple phase cores are at least approximately equal in magnitude; and

an inner layer arranged eccentrically in the interior of the cable with respect to the central longitudinal axis of the cable, wherein the phase bundle is disposed in the inner layer, and wherein the phase bundle is arranged to move around the central longitudinal axis of the cable such that an orientation of the eccentricity of the phase bo dle changes with respect to the central longitudinal axis of the cable along a longitudinal extension of the cable.

2 . The cable according to claim 1 , wherein the multiple phase cores of the phase bundle are arranged at least electrically symmetrically therein; and/or,

the cable is designed to be at least electrically symmetrical at least with respect to a capacitive and/or inductive coupling of the multiple phase cores to one another, so that a particularly capacitive and/or inductive coupling between two of the multiple phase cores is at least approximately equal in magnitude; and/or,

the cable is designed to be symmetrically in such a way that the capacitive and/or inductive couplings, between in each case one core in an inner layer and one core in the at least one outer layer are at least approximately equal in magnitude.

3 . The cable according to claim 1 , wherein the multiple phase cores are arranged symmetrically in the phase bundle in such a way that, in a cross-section extending perpendicular to a longitudinal direction of the phase bundle, respective phase conductors of the multiple phase cores are arranged at a respective corner of an imaginary geometric equilateral polygon and, wherein one phase conductor of one of multiple phase cores is arranged at each corner of the imaginary geometric equilateral polygon.

4 . The cable according to claim 1 , wherein an absolute value of a lay length ratio of the lay length (SP) of the multiple phase cores in the phase bundle to a lay length (SA) of the at least one further core, with which the at least one further core is wound around the phase bundle, is greater than or equal to 0.1 and/or is less than or equal to 5.

5 . The cable according to claim 1 , wherein the at least one further core is arranged in the cable in such a way that the at least one further core crosses at least one of the multiple phase cores at crossing points; and/or, a crossing angle (W) with which the at least one further core crosses at least one of the multiphase cores at a respective crossing point is less than or equal to 65° and/or is greater than or equal to 5°.

6 . The cable according to claim 1 , wherein the inner layer lies on the inside with respect to a transverse direction of the cable extending perpendicularly to a longitudinal direction of the cable and at least one outer layer which is arranged further outside than the inner layer with respect to the transverse direction, and in that the multiple phase cores are arranged in the inner layer and the at least one further core is arranged in the at least one outer layer; and/or,

only the multiphase phase cores are arranged in the inner layer of the cable; and/or,

all of the multiphase phase cores of the cable are arranged in the inner layer; and/or,

the multiple phase cores are stranded in the inner layer to form at least one of the at least one phase bundles in the cable; and/or,

the inner layer is a layer lying furthest inwards in a cable interior; and/or,

additional cores which are not phase cores with respect to the transverse direction, are arranged outside the inner layer in the cable interior of the cable.

7 . The cable according to claim 1 , wherein a separating layer is arranged between the multiple phase cores and the at least one further core; and/or,

the separating layer is arranged between an inner layer and an outer layer; and/or,

the separating layer is formed from a separating layer material having an effective permittivity which is less than or equal to 3; and/or,

the separating layer material from which the separating layer is formed is a plastic; and/or,

the separating layer has many air inclusions and/or the separating layer is formed from a woven and/or knitted fabric and/or tape; and/or,

a thickness of the separating layer measured in the transverse direction extending perpendicular to the longitudinal direction of the cable is greater than or equal to 0.01 mm, and/or is less than or equal to 1.5 mm.

8 . The cable according to claim 1 , comprising the multiple phase cores and at least one shielding layer, wherein the cable is designed to be at least electrically symmetrical at least with respect to a respective capacitive and/or inductive coupling of the at least one shielding layer to in each case one of the multiple phase cores; and/or,

at least one shielding layer is arranged outside the multiple phase cores and the at least one further core around all the cores of the cable with respect to the transverse direction running perpendicular to the longitudinal direction of extension of the cable; and/or,

the cable is designed to be symmetrically in such a way that the capacitive and/or inductive coupling between in each case one of the multiple phase cores and the shielding layer is approximately equal in magnitude; and/or,

the shielding layer is arranged outside and around the outer layer in the transverse direction perpendicular to the longitudinal direction of extension of the cable.

9 . The cable according to claim 1 , wherein the cable has a sheath which is arranged on the outside of the cable with respect to the transverse direction extending perpendicularly to the longitudinal direction; and/or,

no further layer is arranged between the sheath and an outer layer with respect to the transverse direction extending perpendicular to the longitudinal direction of the cable; and/or,

additional material is arranged in the outer layer for filling free spaces between the cores in the outer layer; and/or,

the sheath on the inside penetrates into the outer layer and at least partially fills free spaces between the cores in the outer layer.

10 . The cable according to claim 1 , wherein the multiple phase cores are formed substantially identically comprise a substantially identical insulation material;

and/or, an insulating material of a respective insulating sheath of a respective phase core comprises one of the plastics polyethylene (PE) and/or polypropylene (PP) and/or polytetrafluoroethylene (PTFE) and/or polyvinyl chloride (PVC).

11 . The cable according to claim 1 , wherein a phase line is provided for each phase of a current to be transmitted by the cable by only one phase core of the multiphase phase cores.

12 . The cable according to claim 1 , wherein the cable comprises as at least one further core or as multiple further cores at least one protective core and/or at least one data signal core.

13 . The cable according to claim 1 , wherein the at least one further core comprises two further cores, wherein the two further cores are two signal cores, and are combined to form a pair of cores and/or the two signal cores are stranded to form a bundle of cores; and/or,

wherein the at least one further core comprises at least one pair of cores and/or wherein the at least one further core comprises at least one bundle of cores is shielded by its own metallic, shielding within the cable interior shielded from the multiple phase cores; and/or,

an insulation material of a respective insulating sheath of the at least one further core, which is at least one protective core and/or at least one signal transmission core, comprises a plastic, wherein the insulation material comprises a foamed plastic.