| 精确计算电动机额定转矩数值TN要用到额定功率PN(单位用kW)和额定转速nN（单位用r/min，由铭牌上得到），计算公式如下：
转矩的单位为“千克力·米(kgf·m)”时：文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html (1)文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html 转矩的单位为“牛顿·米(N·m)”时：文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html (2)文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html 例：11kW、额定转速为1440r/min的4极交流异步电动机，额定转矩为：文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html TN=975×11÷1440=7.448(kgf·m)文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html =9550×11÷1440=72. 95(N·m)文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html 用一段口决表述为：文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html 额定转矩怎样求？功率千瓦除转速。文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html 单位要用公斤米，再乘系数九七五。文章源自公式库网-https://www.gongshiku.com/html/201808/diandongjiedingzhuanjuzhijisuangongshi.html 单位要用牛顿米，乘十再乘九五五。 |
