| 摘要 |
PROBLEM TO BE SOLVED: To provide a stationary induction electrical apparatus that efficiently cools disc windings. SOLUTION: The stationary induction electrical apparatus has an internal insulating cylinder 2, an external insulating cylinder 1 arranged so as to form an annular space 31 along with the internal insulating cylinder 2, and a plurality of disc windings 4 laminated in a plurality of stages while mutually maintaining a prescribed interval therebetween in a center-axis direction so as to form a horizontal cooling path 13 that allows a refrigerant to circulate therein. A plurality of outer shims 51 or a plurality of inner shims 52 are arranged between the disc windings 4 vertically adjacent to each other. The outer shim 51 has a horizontal part 10 and an outer expanded part 5 protruding to both sides along the circumferential direction outside the outer radial end of the horizontal part 10 so as to partially close an outer vertical cooling path 11. The inner shim 52 has a horizontal part 10 and an inner expanded part 6 protruding to both sides along the circumferential direction on the center-axis side of the inner radial end of the radial inside of the horizontal part 10 so as to partially close an inner vertical cooling path 12. COPYRIGHT: (C)2010,JPO&INPIT
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