| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a magnetic coil which lowers the partial discharge between the adjacent conductor layers of the coil and is increased in its bore radius to be raised in its operation voltage. SOLUTION: A system for reducing the partial discharge between adjacent conductive plates (94, 96 and 98) and a method therefor include that a large number of particles (100) are suspended in the space (92) between the adjacent conductive plates (94, 96 and 98) of the magnetic coil (70) and uniformly dispersed throughout the space (92) to enable a rise in partial discharge start voltage. By this constitution, the coil (70) can be operated by raised drive voltage while lowering the partial discharge between the adjacent conductive plates (94, 96 and 98). COPYRIGHT: (C)2008,JPO&INPIT
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