Connection structure of the superconducting cable

The superconducting cable 10 between a connecting structure for connecting the intermediate connection portion, the cable core 11 is provided with an electrically insulating layer 20 formed by winding an insulating paper such around the superconducting layers 14, former 13 and superconducting layers both sides of the electrically insulating layer of the conductor connecting portion S formed by connecting the door are both have a tapered portion 21 whose diameter is reduced toward the conductor connecting portion, the tapered portion is nearer to the conductor connecting portion tilt angle are small plurality of formed by changing stepwise the inclination angle by the tapered portion, and a reinforcing insulating layer 50 between the tapered portion.