| 摘要 |
PURPOSE:To eliminate the concentration of stress due to a thermal expansion of the damper winding conductor by providing both a through hole to the short circuit bar and a projection to the core end plate and by fitting them each other in the lower part of the place at which the short circuit bar of the damper winding and the core end plate are fitted each other. CONSTITUTION:The short bar 4 of the damper winding conductor 3 and the core end plate 2 are held by fitting the projection 7, which is provided to the end plate 2, in the groove 6 that is provided to the short circuit bar 4, moreover, in the lower part of said fitted position, the through hole 13 is formed in the short circuit bar 4 and the projection 14 is shaped on the end plate 2 to fit the two each other. In this way, the outward bending moment by the centrifugal force can be received, and the concentration of thermal stress can be prevented by the sliding motion between the through hole 13 and the projection 14 even though the damper winding conductor 3 is expanded by heat. |
