A superconducting cable provided with the device

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The arrangement has a superconducting screen (3) concentrically surrounding a superconducting conductor (1) with interposition of a dielectric (2). A superconducting cable (SK) is surrounded by a cryostat (KR), and encloses a free space (FR) for a coolant to be passed through. Vacuum insulation (6) is arranged between metallic tubes (4, 5). The screen is made of a superconducting material i.e. Yttrium barium copper oxide, whose electrical resistance value in normally conductive state is greater than electrical resistance value of the material used for the conductor in the conductive state. The superconducting conductor is made of Bismuth strontium calcium copper oxide, rare-earth barium-copper-oxide and copper.