Patent ID: 7633014

Claim:
A superconducting cable, comprising: a superconductive cable core having a superconductive conductor, an insulation surrounding the superconductive conductor and a shielding surrounding the insulation; a cryostat, enclosing the superconductive cable core; a layer of a dielectric or semiconducting material applied to a central element formed from a normally conducting material as a strand or tube; and a layer of at least one wire or strip of superconductive material placed helically onto the layer of a dielectric or semiconducting material, wherein the central element and the layer of superconductive material are connected to each other in an electrically conducting manner at the ends of the cable core, wherein the electrical connection provided at each end of the cable core is produced by at least one ring of copper, which is provided between the central element and the layer of superconductive material and is in electrically conducting contact with the central element and the layer of superconductive material, and wherein each ring is connected both to the central element and to the layer of superconductive material by a soldered connection.