三相功率公式

三相总功率为

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不论对称负载是星形联接或三角形联接，如将上述关系代入则得文章源自公式库网-https://www.gongshiku.com/html/201808/sanxianggongshuaigongshi.html

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可得出三相无功功率和视在功率：文章源自公式库网-https://www.gongshiku.com/html/201808/sanxianggongshuaigongshi.html

文章源自公式库网-https://www.gongshiku.com/html/201808/sanxianggongshuaigongshi.html 文章源自公式库网-https://www.gongshiku.com/html/201808/sanxianggongshuaigongshi.html