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剩余电流断路器的工作原理

将漏(lou)电(dian)(dian)(dian)(dian)保(bao)(bao)护(hu)器(qi)(qi)安装在线路中(zhong)(zhong),一(yi)次(ci)(ci)(ci)(ci)线圈(quan)与电(dian)(dian)(dian)(dian)网的(de)线路相连接,二(er)次(ci)(ci)(ci)(ci)线圈(quan)与漏(lou)电(dian)(dian)(dian)(dian)保(bao)(bao)护(hu)器(qi)(qi)中(zhong)(zhong)的(de)脱扣器(qi)(qi)连接。当用(yong)电(dian)(dian)(dian)(dian)设(she)备(bei)正常(chang)运行(xing)时(shi),线路中(zhong)(zhong)电(dian)(dian)(dian)(dian)流(liu)(liu)呈平衡(heng)状态,互(hu)感(gan)器(qi)(qi)中(zhong)(zhong)电(dian)(dian)(dian)(dian)流(liu)(liu)矢量之和为零。由于一(yi)次(ci)(ci)(ci)(ci)线圈(quan)中(zhong)(zhong)没有剩余电(dian)(dian)(dian)(dian)流(liu)(liu),所以不会感(gan)应(ying)二(er)次(ci)(ci)(ci)(ci)线圈(quan),漏(lou)电(dian)(dian)(dian)(dian)保(bao)(bao)护(hu)器(qi)(qi)的(de)开(kai)关(guan)装置处于闭(bi)合状态运行(xing)。当设(she)备(bei)外(wai)壳发(fa)生漏(lou)电(dian)(dian)(dian)(dian)并(bing)有人触及时(shi),则在故(gu)障(zhang)点产生分(fen)流(liu)(liu),此(ci)(ci)漏(lou)电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)流(liu)(liu)经(jing)人体、大地(di)、工作接地(di),返回变压器(qi)(qi)中(zhong)(zhong)性点,致使互(hu)感(gan)器(qi)(qi)申(shen)流(liu)(liu)入、流(liu)(liu)出的(de)电(dian)(dian)(dian)(dian)流(liu)(liu)出现了不平衡(heng),一(yi)次(ci)(ci)(ci)(ci)线圈(quan)申(shen)产生剩余电(dian)(dian)(dian)(dian)流(liu)(liu)。因此(ci)(ci),便会感(gan)应(ying)二(er)次(ci)(ci)(ci)(ci)线圈(quan),当这(zhei)个(ge)电(dian)(dian)(dian)(dian)流(liu)(liu)值(zhi)达(da)到该漏(lou)电(dian)(dian)(dian)(dian)保(bao)(bao)护(hu)器(qi)(qi)限定(ding)的(de)动作电(dian)(dian)(dian)(dian)流(liu)(liu)值(zhi)时(shi),自动开(kai)关(guan)脱扣,切断电(dian)(dian)(dian)(dian)源。

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