西门子变频器现货6SE6440-2UD15-5AA1

6SE6440-2UD15-5AA1

6SE6440-2UD15-5AA1现货

交流异步电机的转速计算公式：n=60f/P，这个很简单，转速与电源频率成正比，与电机极对子（记住是一对）数成反比，直接套用公式就好。不过这个公式实际计算出是同步转速（旋转磁场速度），异步电机实际转速会略低于同步转速，所以我们往往会看到4极电机一般是1400多转，达不到1500转。

电机转矩、功率计转速的关系

电机转矩、功率计转速的关系：T=9550P/n（P是电机功率、n是电机转速），可以从上面序号1内容中推导出来，不过我们没必要学会推导，记住这个计算公式就可以。不过再次提醒，公式中功率P不是输入功率，而是输出功率，由于电机有损耗，输入功率不等于输出功率。

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