A connection arrangement for electrically interconnecting the shields of
so-called "cold-dielectric" superconductor cables in the context of a
muiltiphase superconductive electrical link, each super-conductor cable
comprising a central superconductor presenting superconductivity at
cryogenic temperature, electrical insulation surrounding the central
conductor, a shield surrounding the electrical insulation, and a cryostat
surrounding said shield. According to the invention, the arrangement
comprises a superconductive link between said shields, said
superconductive link comprising a link superconductor and a cryogenic
sheath surrounding said link superconductor, each of the two ends of said
link superconductor being connected to a respective one of said shields
by connection means that are both electrically and thermally conductive.
The invention is particularly applicable to high voltage electricity.