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好吧问答库 > 知道电流，电压，功率因数，怎么算功率？度和功率的关系？

知道电流，电压，功率因数，怎么算功率？度和功率的关系？

2025年03月15日 10:23

有1个网友回答

网友（1）：

对称三相交流电路功率：P=1.732(根号3）*UI cos a （有功功率）单位：瓦
Q=1.732(根号3）*UI sin a （无功功率）单位：乏尔
S=1.732(根号3）*UI （视在功率）单位：伏安
U:线电压 I:线电流 a:相电压与相电流的相角
1KWh=1度

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