| 摘要 |
PROBLEM TO BE SOLVED: To provide a superconductive cable capable improving heat insulation performance by a heat insulation tube and maintaining minimum heat insulation performance of the heat insulation tube even if the outside of the heat insulation tube is broken during transportation. SOLUTION: The heat insulation tube 2 housing a cable core 3 of the superconductive cable 1 is provided with a first metal tube 21, a second metal tube 22, and a third metal tube 23 arranged in this order from the inside in the radial direction. An inner insulation part 5 is formed between the first metal tube 21 and the second metal tube 22, and on the inside of the third metal tube 32, an outer heat insulation part 7 is formed on the outside of the inner insulation part 5. The heat insulation performance of the heat insulation part on the outside is set to be lower than that of the insulation part on the inside. COPYRIGHT: (C)2006,JPO&NCIPI
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