| 摘要 |
PROBLEM TO BE SOLVED: To provide a current lead capable of reducing a size by securing a wider conductive portion where current flows actually, and to provide a terminal connection structure with the current lead. SOLUTION: A current lead 100 for a cryogenic apparatus, which is led out from a cryogenic side to a normal temperature side, has a twisted-wire structure in which a plurality of wires insulated to each other are twisted together. By constituting the current lead 100 to have the twisted-wire structure in which the wires are insulated to each other, a cross section of the current lead 100 is subdivided by each wire, so that an eddy current loss is reduced. Preferably, the current lead 100 is constituted of a plurality of stranded wires twisted together, and each of the stranded wires is constituted of the plurality of element wires which are insulated to each other and twisted together. The constitution substantially reduces a skin effect and substantially increases the number of element wires used as a current flow path, so that the size of the current lead 100 is reduced. COPYRIGHT: (C)2010,JPO&INPIT |
