| 摘要 |
PURPOSE: A current limiting device is provided to insulate three phase conductors from with each other, so having a simple structure. CONSTITUTION: Two metallic tubes are arranged to be concentric with each other. Two metallic tubes are filled with a vacuum insulator. A low maintenance unit includes the two metallic tubes. A current limiting device is arranged within the low maintenance unit and surrounds a free space. The current limiting device uses a part consisting of super conductive materials. The parts(4,5,6) comprise three phase conductors(7,8,9). |
