一、產品用途及(ji)特點(dian)

     LLJ-□F（S）系列漏電(dian)繼電(dian)器(qi)（以(yi)下簡稱繼電(dian)器(qi)）適用于交流電(dian)壓至1140V，頻率為(wei)50Hz，該(gai)繼電(dian)(dian)器(qi)與分勵脫(tuo)扣器(qi)或(huo)失(shi)壓脫(tuo)扣器(qi)的斷路器(qi)、交流接觸器(qi)、磁(ci)力啟動器(qi)等(deng)組(zu)成漏電(dian)(dian)保護裝置，作漏電(dian)(dian)和觸電(dian)(dian)保護之用，可配備蜂(feng)鳴器(qi)、信號等(deng)各種聲光器(qi)件結合組(zu)成漏電(dian)(dian)報警裝置。

    體(ti)積小，安裝使用(yong)方便(bian)，動作值固定(ding)分檔可(ke)調，動作可(ke)靠，連續供(gong)電(dian)(dian)(dian)穩定(ding)，操作簡(jian)易。能適應各地(di)(di)用(yong)戶，可(ke)以用(yong)來(lai)對(dui)線路進(jin)行接(jie)(jie)地(di)(di)故障保(bao)護，防止(zhi)由于接(jie)(jie)地(di)(di)故障電(dian)(dian)(dian)流引起的設備事(shi)故或電(dian)(dian)(dian)氣火災(zai)，也可(ke)用(yong)來(lai)對(dui)人體(ti)觸(chu)電(dian)(dian)(dian)解除提供(gong)間接(jie)(jie)接(jie)(jie)觸(chu)保(bao)護。

     它適(shi)用(yong)(yong)(yong)于電(dian)源系(xi)統(tong)中(zhong)心點直接(jie)接(jie)地(di)或(huo)不接(jie)地(di)的高、低壓(ya)配電(dian)系(xi)統(tong)。是安全使用(yong)(yong)(yong)的網改產品。該繼電(dian)器的動作時間(jian)分快速型和(he)延時型，配合使用(yong)(yong)(yong)時對干線(xian)和(he)支線(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(xi)列漏(lou)電(dian)繼電(dian)器。

二、             工作原理

    該繼(ji)電(dian)(dian)器(qi)是電(dian)(dian)子式電(dian)(dian)流動作(zuo)型漏電(dian)(dian)繼(ji)電(dian)(dian)器(qi)，主要由零序電(dian)(dian)流互感器(qi)、電(dian)(dian)子線路(lu)、試驗回路(lu)及出口繼(ji)電(dian)(dian)器(qi)組成其工作(zuo)原理如下：

    接(jie)線(xian)如圖（1），穿入主線路(lu)的零序互(hu)感(gan)(gan)(gan)器，在主線路(lu)沒有漏電的情(qing)況下，矢量(liang)和等于零或極(ji)微，當主線路(lu)上(shang)有漏電或人觸電時，零序互(hu)感(gan)(gan)(gan)器就感(gan)(gan)(gan)應到一個不平衡的電流矢量(liang)和信(xin)號，零序電流互(hu)感(gan)(gan)(gan)器的電路(lu)發生對地漏電時iA+iB+iC≠0。送(song)入主(zhu)機進(jin)行(xing)放大(da)后，檢測漏電(dian)(dian)(dian)流(liu)(liu)是否(fou)超過(guo)整定值，并把結果送(song)入執行(xing)機構來執行(xing)。此(ci)時(shi)零(ling)序(xu)電(dian)(dian)(dian)流(liu)(liu)互感(gan)器(qi)會產生(sheng)一個感(gan)應信號，此(ci)信號經電(dian)(dian)(dian)子線(xian)路(lu)處理(li)，當(dang)漏電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)(liu)達(da)到動(dong)(dong)作值時(shi)，使(shi)可(ke)控(kong)硅導通觸使(shi)繼電(dian)(dian)(dian)器(qi)動(dong)(dong)作，利用繼電(dian)(dian)(dian)器(qi)常開、閉點控(kong)制主(zhu)線(xian)路(lu)斷(duan)路(lu)器(qi)或接觸器(qi)斷(duan)開，切除(chu)故障線(xian)路(lu)達(da)到保(bao)護的目的。試(shi)驗回(hui)(hui)路(lu)由電(dian)(dian)(dian)阻與按(an)(an)鈕(niu)(niu)等元件組成，按(an)(an)下試(shi)驗按(an)(an)鈕(niu)(niu)，有(you)一電(dian)(dian)(dian)流(liu)(liu)流(liu)(liu)過(guo)互感(gan)器(qi)，相當(dang)于主(zhu)線(xian)路(lu)有(you)漏電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)(liu)，指示燈(deng)亮，出(chu)口繼電(dian)(dian)(dian)器(qi)就應能動(dong)(dong)作。按(an)(an)下復歸按(an)(an)鈕(niu)(niu)，燈(deng)滅，出(chu)口繼電(dian)(dian)(dian)器(qi)返回(hui)(hui)。

三、型號(hao)含義(yi)及技術參數

四、繼電器(qi)外(wai)(wai)型(xing)及安裝外(wai)(wai)孔圖(tu)（mm）