LJJHDLSB-D帶電電纜識別儀

LJJHDLSB-D帶電電纜識別儀

產品介紹

產品簡介

LJJHDLSB-D帶電電纜識別是用于將某一特定電纜從一束電纜中識別出來的專用儀器。它是一小型化手提式，緊湊型儀器，裝在鋁合金箱內，由一個信號發生器，一個帶卡鉗的接收機及連線構成。

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產品別稱

電(dian)纜(lan)(lan)(lan)故障儀、電(dian)纜(lan)(lan)(lan)故障測試儀、數字(zi)式電(dian)纜(lan)(lan)(lan)識(shi)別儀、帶電(dian)電(dian)纜(lan)(lan)(lan)識(shi)別儀、帶電(dian)電(dian)纜(lan)(lan)(lan)識(shi)別儀原(yuan)理

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工作原理

為(wei)了可靠準確地識別電(dian)纜(lan)，需要(yao)給被(bei)(bei)識別電(dian)纜(lan)加一特(te)(te)殊(shu)的信號，該信號要(yao)被(bei)(bei)專用(yong)接收(shou)機接收(shou)，利用(yong)這一特(te)(te)性便能(neng)識別出要(yao)找的電(dian)纜(lan)。

該儀器(qi)按下述原理工(gong)作：

發生器將周期性(xing)的(de)(de)(de)單極(ji)性(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓脈沖饋入(ru)要(yao)(yao)識別的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)中，該(gai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)需要(yao)(yao)在(zai)遠端接地，以(yi)保證有(you)(you)足夠大(da)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)。該(gai)系統要(yao)(yao)設計成返(fan)回(hui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)不要(yao)(yao)從同一(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)中返(fan)回(hui)，能做到這一(yi)(yi)點，饋入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)中的(de)(de)(de)脈沖電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)方(fang)向(xiang)可(ke)做為一(yi)(yi)明顯的(de)(de)(de)識別標(biao)準，流(liu)(liu)(liu)出(chu)去的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)僅(jin)從這一(yi)(yi)根(gen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)通過(guo)，所有(you)(you)其它(ta)鄰近電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)中流(liu)(liu)(liu)過(guo)的(de)(de)(de)都是返(fan)回(hui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，但它(ta)們的(de)(de)(de)極(ji)性(xing)相反。除了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方(fang)向(xiang)這一(yi)(yi)實際差異外，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)幅度也是一(yi)(yi)識別特征，流(liu)(liu)(liu)出(chu)去的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)僅(jin)通過(guo)一(yi)(yi)根(gen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)、而(er)返(fan)回(hui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)可(ke)通過(guo)幾根(gen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)、這意味(wei)著流(liu)(liu)(liu)出(chu)去的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)比流(liu)(liu)(liu)過(guo)其它(ta)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)(de)(de)返(fan)回(hui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)大(da)。

接(jie)收機(ji)的(de)(de)(de)(de)(de)(de)(de)任務是(shi)探測(ce)流(liu)(liu)(liu)(liu)(liu)過電(dian)(dian)(dian)纜(lan)(lan)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)方(fang)(fang)(fang)(fang)向(xiang)(xiang)以及(ji)它的(de)(de)(de)(de)(de)(de)(de)大小(xiao)。為(wei)達到(dao)這一目的(de)(de)(de)(de)(de)(de)(de)，電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)卡(ka)鉗(qian)(qian)被(bei)用作傳感器(qi)，它帶有一放大器(qi)并串聯在電(dian)(dian)(dian)路中(zhong)，卡(ka)鉗(qian)(qian)鉗(qian)(qian)住被(bei)測(ce)電(dian)(dian)(dian)纜(lan)(lan)，電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)流(liu)(liu)(liu)(liu)(liu)過電(dian)(dian)(dian)纜(lan)(lan)產生的(de)(de)(de)(de)(de)(de)(de)磁(ci)場在卡(ka)鉗(qian)(qian)的(de)(de)(de)(de)(de)(de)(de)線圈(quan)(quan)中(zhong)感應出(chu)電(dian)(dian)(dian)壓(ya)，該電(dian)(dian)(dian)壓(ya)極(ji)性(xing)由電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)方(fang)(fang)(fang)(fang)向(xiang)(xiang)和卡(ka)鉗(qian)(qian)線圈(quan)(quan)的(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)(fang)(fang)向(xiang)(xiang)決定。為(wei)了得(de)到(dao)明顯有電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)方(fang)(fang)(fang)(fang)向(xiang)(xiang)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)極(ji)性(xing)，對(dui)一束電(dian)(dian)(dian)纜(lan)(lan)中(zhong)所(suo)有電(dian)(dian)(dian)纜(lan)(lan)進行(xing)測(ce)試都(dou)采取(qu)相同正(zheng)確的(de)(de)(de)(de)(de)(de)(de)繞組方(fang)(fang)(fang)(fang)向(xiang)(xiang)，這就是(shi)卡(ka)鉗(qian)(qian)上(shang)標有箭(jian)頭(tou)的(de)(de)(de)(de)(de)(de)(de)原因。卡(ka)鉗(qian)(qian)上(shang)箭(jian)頭(tou)的(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)(fang)(fang)向(xiang)(xiang)應指(zhi)向(xiang)(xiang)電(dian)(dian)(dian)纜(lan)(lan)遠端，卡(ka)鉗(qian)(qian)線圈(quan)(quan)中(zhong)感應的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)在表(biao)頭(tou)中(zhong)顯示出(chu)來，如果卡(ka)鉗(qian)(qian)按上(shang)述方(fang)(fang)(fang)(fang)式連接(jie)，指(zhi)針(zhen)擺動方(fang)(fang)(fang)(fang)向(xiang)(xiang)可(ke)顯示電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)方(fang)(fang)(fang)(fang)向(xiang)(xiang)，即只有電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)流(liu)(liu)(liu)(liu)(liu)出(chu)的(de)(de)(de)(de)(de)(de)(de)這根電(dian)(dian)(dian)纜(lan)(lan)指(zhi)針(zhen)向(xiang)(xiang)右(you)偏(pian)，這根就是(shi)要找的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)纜(lan)(lan)。所(suo)有其它電(dian)(dian)(dian)纜(lan)(lan)只流(liu)(liu)(liu)(liu)(liu)過返回電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，指(zhi)針(zhen)向(xiang)(xiang)左(zuo)偏(pian)、或無脈動電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，指(zhi)針(zhen)不偏(pian)轉(zhuan)。接(jie)收機(ji)上(shang)的(de)(de)(de)(de)(de)(de)(de)放大調(diao)節(jie)器(qi)可(ke)調(diao)整信號(hao)強度。

相關操作

主機外型尺寸：400mm×270mm×210mm

接收機(ji)外型尺寸：155mm×205mm×50mm

JHDLSB-D帶電電纜識別主機各部分(fen)功能如下：

1.　電(dian)源(yuan)開(kai)關：控制(zhi)整(zheng)機(ji)電(dian)源(yuan)通斷。

2.　電源輸(shu)入插座(zuo)(zuo)：用(yong)(yong)儀器(qi)所配(pei)專用(yong)(yong)電源線，輸(shu)入50HZ、220V交流電源。儀器(qi)使(shi)(shi)用(yong)(yong)時，應獨立使(shi)(shi)用(yong)(yong)三孔電源插座(zuo)(zuo)，插座(zuo)(zuo)接(jie)地線就近直接(jie)接(jie)地。

3.　保險座：儀器(qi)使用10A保險芯，損(sun)壞(huai)時應換同(tong)規格保險芯。

4.　黑(hei)接線(xian)柱(zhu)：測(ce)試時，用配套黑(hei)色測(ce)試線(xian)（Ф4插(cha)頭）插(cha)入此插(cha)孔，另一端測(ce)試夾接系統(tong)地。

5.　紅(hong)接(jie)線柱：測試(shi)時(shi)，用配套紅(hong)色測試(shi)線（Ф4插頭）插入(ru)此插孔，另一端(duan)測試(shi)夾(jia)接(jie)被測電纜芯線。

6.　表頭：指示(shi)輸出電(dian)流(liu)大小。

7.　輸出(chu)調(diao)節(jie)：用于調(diao)整主機電流(liu)大(da)(da)小，使用時根(gen)據測試(shi)電纜(lan)長短及接收器(qi)指示(shi)大(da)(da)小適(shi)當調(diao)節(jie)。順時針旋轉輸出(chu)電流(liu)增大(da)(da)。

接收機各部分功能如下：

1.電源開關(guan)：接收機電源接通(tong)與關(guan)斷(duan)。

2.幅度調節：順時針旋轉，接收機電(dian)表指(zhi)示(shi)值增大(da)，逆時針旋轉，指(zhi)示(shi)值變小。

3.表頭：指示(shi)輸入(ru)信號幅度大小與極性(xing)。

4.電(dian)源指示(shi)燈：電(dian)源開關接通時(shi)，指示(shi)燈亮(liang)。