西门子6ES7340-1BH02-0AE0

6ES7340-1BH02-0AE0

转子错片、槽斜线不直

产生转子错片的原因有：

转子铁心压装时没有用槽样棒定位，槽壁不整齐。

假轴上的斜键和冲片上键槽间的配合间隙过大；

压装时的压力小，预热后冲片毛刺及油污被烧去，使转子片松动；

转子预热后在地上乱扔乱滚，转子冲片产生角位移。

以上缺陷将使转子槽口减小，转子槽漏抗增大，导条截面减小，导条电阻增大，并对电机性能产生如下影响：

大转矩降低，起动转矩降低，满载时的电抗电流增大，功率因素降低；

定子、转子电流增大，定子铜耗增大；

转子损耗增大，效率降低，温升高，转差率大。

转子斜槽宽大于或小于允许值

斜槽宽大于或小于允许值的原因，主要是转子铁心压装时没有采用假轴上的斜键定位，或假轴设计时斜键的斜度尺寸超差。

对电机性能的影响是：

斜槽宽大于允许值，转子斜槽漏抗增大，电机总漏抗增大；

导条长度增加，导条电阻增大，对电机性能影响同下；

斜槽宽小于允许值时，转子斜槽漏抗减小，电机总漏抗减小，起动电流增大；

电机的噪声和振动大。

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