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三个220v为什么是380v
更新时间: 2020-11-06 00:00:00  

三个220v是380v的原因是相电压等于380%√3=219.4,也就是我们常说的220V。相电压是ABC三相中任意一相的对地电压,即对工作零线的电压,这个就是相电压,它与线电压之间的关系从矢量图可以看出是√3倍的关系,也就是线电压是相电压的√3倍。

关键词: 220v 为什么 380v

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