| 摘要 |
PURPOSE:To suppress the partial discharge at the end of a semiconductive layer without losing the effect of the layer that power loss is reduced in a field alleviating layer by providing a resistance layer in contact with the layer in a main insulating layer. CONSTITUTION:After a main insulating layer 3 is formed by winding a mica tape to 1/2 of the prescribed thickness on the outer periphery of the conductor 2 of a stator coil 1, a semiconductive tape having a resistivity of 10<6>ohms in thickness of 0.1mm. of length l is wound at the coil end side in length of 100mm. at the stator core 1 side from a seam between a low resistance corona shielding layer 4 and a field alleviating layer 5 as a reference position, and a semiconductive layer 6 is provided. Further, a resistance layer 7 is provided at the coil end side in contact with the coil end side end of the layer 6, and the layer 3 is formed on the outer periphery. |
