A superconductive electric cable is provided in which a cable core is arranged in a cryostat, where the cable core is composed of three phase conductors arranged concentrically around an inner cooling duct, with an electric insulation arranged between the phase conductors, and where the cryostat is surrounded by an electric insulation, which is surrounded by a neutral conductor of normally conductive materials. In this cable, a neutral conductor or a screening is arranged only outside of the cryostat, and is formed by normally conductive material which surrounds the cryostat as a common neutral conductor, where an insulating material is arranged between this neutral conductor and the cryostat.