什么是三相电？三相四线制与三相五线制有什么区别？你...
什么是三相电：我们知道线圈在磁场中旋转时,导线切割磁场线会产生感应电动势,它的变化规律可用正弦曲线表示。如果我们取三个线圈将它们在空间位置上相差点120度角,三个线圈仍旧在磁场中以相同速度旋转,一定会感应出三个频率相同的感应电动势。由于三个线圈在空间位置相差点120度角,故产生的电流亦是三相正弦变化,称为三相正弦交流电。工业用电采用三相电,如三相交流电动机等。相与相之间的电压是线电压,电压为380V。相与中心线之间称为相电压,电压是220V。树上鸟教育电气设计师在线教学网络课程！三相四线制：相线A、B、C，保护零线PEN，PEN线上有工作电流通过，PEN在进入用电建筑物处要做重复接地；属于TN-C接地系统.三相五线制：相线A、B、C，零线N，保护接地线PE，N线有工作电流通过，PE线平时无电流（仅在出现对地漏电或短路时有故障电流）；我国民用建筑的配电方式采用TN-S接地系统。请看下面更详细的图文讲解！https://p6.toutiaoimg.com/origin/pgc-image/bc3ddcf335fa4ba388a3d9d37ec28f9a?from=pchttps://p6.toutiaoimg.com/origin/pgc-image/a4eafbea332b4caeb55a4c6589dd9315?from=pc
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原来还有这种操作，长见识了！ 同款经历！简直是世另我 求个链接 / 教程，楼主好人一生平安～ 这波分析到位，逻辑满分！ 说得对！狠狠赞同，没毛病～ 评论区人才辈出，笑到停不下来😂 笑不活了，评论区比正文还精彩
已转发给朋友，一起快乐一下 我先占个楼，等下再慢慢看～ 楼主太会说了，字字句句都在理～
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