| 摘要 |
PURPOSE:To easily insure an insulation distance within oil in a winding and a magnetic shield, by thickening magnetic shield material placed around the magnetic shield as compared to one placed near the phase center of a winding. CONSTITUTION:A magnetic sheild 4c at the nearest phase center of a winding 2 is made thin, and a magnetic shield 4d near the center of phase center and inter- phase is made thick. A magnetic shield 4e is made thin at the inter-phase which is low in invading magnetic flux leakage. Such a constitution makes low magnetic reluctance around the phase center of winding. The magnetic flux leakage from the winding 2 tends to disperse in a wide range. |
