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三相和单相的区别
更新时间: 2020-09-16 00:00:00  

单相电是指一相火线,还有一相零线,火线和零线之间的电压为220伏特。

三相电是指三相火线,相邻火线之间的电压为380伏特,没有零线。因此只有三相负载相同情况下,才能适用三相电。此时由于三相电的电流矢量和为0,这三相电之间互成120度角,所以之和为0。这时不需要中线,相当于零线。

关键词: 相和 区别

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