| 摘要 |
PROBLEM TO BE SOLVED: To provide an excellent stationary inductive electric apparatus that can prevent local overheat reliably by allowing leakage magnetic flux to escape due to a magnetic shield having a simple configuration effectively even if the leakage magnetic flux entering the side of a tank is biased toward the upper or lower portion of the tank, and contributes to improvement in reliability/economy by restraining the costs of the magnetic shield. SOLUTION: A horizontally stacked magnetic shield 3 is mounted lengthily in a horizontal direction on the side of the tank 4 at a side in parallel with a direction, where each phase winding 2 forms a line. The horizontally stacked magnetic shield 3 comprises a plurality of ferromagnetic thin plates, and each thin plate is vertical to the bottom surface of the tank 4 and a plurality of thin plates are laminated from the side of the tank 4 toward the winding 2 for horizontal stacking. The horizontally stacked magnetic shield 3 is mounted according to the spread of vertical distribution of the leakage magnetic flux 5 entering the side of the tank 4. COPYRIGHT: (C)2008,JPO&INPIT
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