| 摘要 |
PROBLEM TO BE SOLVED: To provide a stationary induction electrical apparatus that can be made compact by distributing an adequate flow rate of a coolant to a coil. SOLUTION: A stationary induction electrical apparatus is produced by winding a core 1 with low-tension windings 3 and high-tension windings 5 with clearances between an inner insulated cylinder 2 and the low-tension windings 3, between the low-tension windings 3 and an intermediate insulated cylinder 4, and between the intermediate insulated cylinder 4 and the high-tension windings 5, left therein to form vertical ducts 6 respectively where the coolant M can flow for cooling. This apparatus is provided with a ring middle support material 8 between spool materials 7 at the lower part and notches 8A and 9A in ring support material oil at the upper part, so that new passages for the coolant can be formed as indicated by arrows M1 and M2. COPYRIGHT: (C)2005,JPO&NCIPI
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