一、產品用途及特點

     LLJ-□F（S）系列漏(lou)電(dian)繼(ji)電(dian)器(qi)（以(yi)下簡稱(cheng)繼(ji)電(dian)器(qi)）適用于交流電(dian)壓至1140V，頻率為50Hz，該繼電器(qi)(qi)與分(fen)勵脫扣(kou)器(qi)(qi)或失壓脫扣(kou)器(qi)(qi)的斷路器(qi)(qi)、交流接觸器(qi)(qi)、磁(ci)力啟動器(qi)(qi)等組成漏(lou)電保(bao)護(hu)裝(zhuang)置，作漏(lou)電和觸電保(bao)護(hu)之用，可配備(bei)蜂(feng)鳴器(qi)(qi)、信號(hao)等各種聲光器(qi)(qi)件結(jie)合組成漏(lou)電報警裝(zhuang)置。

    體積(ji)小，安裝使(shi)用(yong)方(fang)便，動作值固定(ding)分檔可(ke)調，動作可(ke)靠(kao)，連(lian)續供(gong)電(dian)穩定(ding)，操作簡(jian)易。能適(shi)應各地用(yong)戶，可(ke)以用(yong)來對線路進(jin)行接地故(gu)(gu)障保護，防(fang)止由于接地故(gu)(gu)障電(dian)流引(yin)起的設備事(shi)故(gu)(gu)或(huo)電(dian)氣火災，也可(ke)用(yong)來對人體觸電(dian)解(jie)除提供(gong)間接接觸保護。

     它適用(yong)(yong)于電源系(xi)統(tong)中心點直(zhi)接(jie)接(jie)地(di)或(huo)不接(jie)地(di)的(de)高、低壓配電系(xi)統(tong)。是安全(quan)使用(yong)(yong)的(de)網改產品。該繼(ji)電器的(de)動作時(shi)間分快速型和延時(shi)型，配合使用(yong)(yong)時(shi)對干線(xian)和支(zhi)線(xian)進(jin)行分級選擇保護，*可替代過去LLJ-□F（S）、LLJ-□H（S）、JD1及JD3系列漏電繼電器(qi)。

二、             工作原理

    該繼電(dian)(dian)(dian)(dian)器(qi)是電(dian)(dian)(dian)(dian)子式電(dian)(dian)(dian)(dian)流(liu)動(dong)作(zuo)型(xing)漏電(dian)(dian)(dian)(dian)繼電(dian)(dian)(dian)(dian)器(qi)，主要(yao)由零序(xu)電(dian)(dian)(dian)(dian)流(liu)互感器(qi)、電(dian)(dian)(dian)(dian)子線路(lu)、試驗回路(lu)及出口繼電(dian)(dian)(dian)(dian)器(qi)組成其(qi)工作(zuo)原理如下：

    接線如(ru)圖（1），穿入主(zhu)線路(lu)的零序(xu)互感(gan)(gan)(gan)器，在主(zhu)線路(lu)沒(mei)有(you)漏電(dian)(dian)的情況下，矢(shi)量和等于零或極微，當主(zhu)線路(lu)上(shang)有(you)漏電(dian)(dian)或人(ren)觸電(dian)(dian)時(shi)(shi)，零序(xu)互感(gan)(gan)(gan)器就(jiu)感(gan)(gan)(gan)應(ying)到一(yi)個不平衡的電(dian)(dian)流(liu)矢(shi)量和信號，零序(xu)電(dian)(dian)流(liu)互感(gan)(gan)(gan)器的電(dian)(dian)路(lu)發生對地(di)漏電(dian)(dian)時(shi)(shi)iA+iB+iC≠0。送(song)入(ru)主(zhu)機進行放(fang)大后，檢測漏電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)是否超過(guo)整定值，并把結(jie)果送(song)入(ru)執行機構(gou)來執行。此時(shi)零序電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)互感(gan)器會(hui)產生(sheng)一個感(gan)應(ying)信(xin)號，此信(xin)號經電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)路處理，當(dang)漏電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)達到(dao)動(dong)(dong)作(zuo)值時(shi)，使(shi)可(ke)控(kong)硅(gui)導通(tong)觸使(shi)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器動(dong)(dong)作(zuo)，利用繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器常(chang)開、閉點控(kong)制主(zhu)線(xian)路斷路器或接觸器斷開，切(qie)除故障線(xian)路達到(dao)保護(hu)的目的。試驗(yan)回(hui)路由電(dian)(dian)(dian)(dian)(dian)(dian)阻與按(an)鈕等元件組成，按(an)下(xia)試驗(yan)按(an)鈕，有(you)一電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)流(liu)(liu)過(guo)互感(gan)器，相當(dang)于主(zhu)線(xian)路有(you)漏電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，指示燈(deng)亮(liang)，出口繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器就應(ying)能動(dong)(dong)作(zuo)。按(an)下(xia)復(fu)歸按(an)鈕，燈(deng)滅，出口繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器返(fan)回(hui)。

三、型號(hao)含(han)義及技術參數

四、繼(ji)電器外型及安裝外孔圖（mm）