電纜帶電識別儀是(shi)用于將某(mou)一(yi)特定電纜(lan)從一(yi)束(shu)電纜(lan)中識(shi)別出來的(de)儀器。它是(shi)一(yi)小型化手提式，緊湊型儀器，裝在鋁合金箱內，由一(yi)個(ge)(ge)信號發生器，一(yi)個(ge)(ge)帶傳感器的(de)接收機(ji)及連(lian)線構成。

電纜帶電識別儀簡介：為(wei)了可靠準確(que)地識別電纜(lan)，需要(yao)給(gei)被(bei)識別電纜(lan)加一特殊的信(xin)號，該(gai)信(xin)號要(yao)被(bei)接收(shou)機接收(shou)，利(li)用這一特性便(bian)能(neng)識別出要(yao)找(zhao)的電纜(lan)。

工作原理：

發生(sheng)器將周期性(xing)的(de)(de)(de)(de)(de)(de)單極性(xing)電(dian)(dian)(dian)壓脈(mo)沖(chong)(chong)饋入(ru)要識別的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)纜(lan)(lan)(lan)中，該電(dian)(dian)(dian)纜(lan)(lan)(lan)需要在(zai)遠端(duan)接地，以保證有足夠(gou)大(da)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過電(dian)(dian)(dian)纜(lan)(lan)(lan)。該系統(tong)要設計成(cheng)返(fan)(fan)(fan)回(hui)電(dian)(dian)(dian)流(liu)(liu)(liu)不要從同(tong)一(yi)電(dian)(dian)(dian)纜(lan)(lan)(lan)中返(fan)(fan)(fan)回(hui)，能做到這(zhe)(zhe)一(yi)點(dian)，饋入(ru)電(dian)(dian)(dian)纜(lan)(lan)(lan)中的(de)(de)(de)(de)(de)(de)脈(mo)沖(chong)(chong)電(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)(de)方向(xiang)可(ke)做為一(yi)明顯的(de)(de)(de)(de)(de)(de)識別標準，流(liu)(liu)(liu)出(chu)(chu)去的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)僅(jin)從這(zhe)(zhe)一(yi)根(gen)電(dian)(dian)(dian)纜(lan)(lan)(lan)通(tong)過，所有其它(ta)鄰近電(dian)(dian)(dian)纜(lan)(lan)(lan)中流(liu)(liu)(liu)過的(de)(de)(de)(de)(de)(de)都是返(fan)(fan)(fan)回(hui)電(dian)(dian)(dian)流(liu)(liu)(liu)，但它(ta)們(men)的(de)(de)(de)(de)(de)(de)極性(xing)相(xiang)反。除了電(dian)(dian)(dian)流(liu)(liu)(liu)方向(xiang)這(zhe)(zhe)一(yi)實際(ji)差異外(wai)，電(dian)(dian)(dian)流(liu)(liu)(liu)幅度也是一(yi)識別特(te)征，流(liu)(liu)(liu)出(chu)(chu)去的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)僅(jin)通(tong)過一(yi)根(gen)電(dian)(dian)(dian)纜(lan)(lan)(lan)、而(er)返(fan)(fan)(fan)回(hui)電(dian)(dian)(dian)流(liu)(liu)(liu)可(ke)通(tong)過幾根(gen)電(dian)(dian)(dian)纜(lan)(lan)(lan)、這(zhe)(zhe)意味著(zhu)流(liu)(liu)(liu)出(chu)(chu)去的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)比(bi)流(liu)(liu)(liu)過其它(ta)電(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)(de)(de)返(fan)(fan)(fan)回(hui)電(dian)(dian)(dian)流(liu)(liu)(liu)大(da)。

　　接收機的任務是探測流(liu)(liu)(liu)過電(dian)(dian)(dian)(dian)(dian)纜(lan)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方向(xiang)(xiang)以及它的大小。為(wei)達到這一(yi)目的，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)傳感(gan)(gan)器(qi)(qi)(qi)被(bei)(bei)用(yong)作傳感(gan)(gan)器(qi)(qi)(qi)，它帶(dai)有(you)(you)一(yi)放大器(qi)(qi)(qi)并串(chuan)聯在電(dian)(dian)(dian)(dian)(dian)路中(zhong)，傳感(gan)(gan)器(qi)(qi)(qi)鉗住被(bei)(bei)測電(dian)(dian)(dian)(dian)(dian)纜(lan)，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過電(dian)(dian)(dian)(dian)(dian)纜(lan)產生(sheng)的磁(ci)場在傳感(gan)(gan)器(qi)(qi)(qi)的線圈(quan)中(zhong)感(gan)(gan)應(ying)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)，該電(dian)(dian)(dian)(dian)(dian)壓(ya)極性(xing)由電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方向(xiang)(xiang)和(he)傳感(gan)(gan)器(qi)(qi)(qi)線圈(quan)的方向(xiang)(xiang)決定。為(wei)了得(de)到明(ming)顯有(you)(you)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方向(xiang)(xiang)的電(dian)(dian)(dian)(dian)(dian)壓(ya)極性(xing)，對一(yi)束電(dian)(dian)(dian)(dian)(dian)纜(lan)中(zhong)所有(you)(you)電(dian)(dian)(dian)(dian)(dian)纜(lan)進行(xing)測試(shi)都(dou)采取相同正確的方向(xiang)(xiang)。傳感(gan)(gan)器(qi)(qi)(qi)線圈(quan)中(zhong)感(gan)(gan)應(ying)的電(dian)(dian)(dian)(dian)(dian)壓(ya)在表頭中(zhong)顯示出(chu)來，如果傳感(gan)(gan)器(qi)(qi)(qi)按(an)上(shang)述方式連接，指(zhi)針擺動方向(xiang)(xiang)可(ke)顯示電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方向(xiang)(xiang)，即只有(you)(you)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)出(chu)的這根電(dian)(dian)(dian)(dian)(dian)纜(lan)指(zhi)針向(xiang)(xiang)一(yi)邊(bian)偏(pian)，這根就是要(yao)找的電(dian)(dian)(dian)(dian)(dian)纜(lan)。所有(you)(you)其它電(dian)(dian)(dian)(dian)(dian)纜(lan)只流(liu)(liu)(liu)過返回電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，指(zhi)針向(xiang)(xiang)另一(yi)邊(bian)偏(pian)、或(huo)無(wu)脈動電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，指(zhi)針不(bu)偏(pian)轉(zhuan)。接收機上(shang)的放大調節器(qi)(qi)(qi)可(ke)調整信號(hao)強(qiang)度。

二、功能介紹

識(shi)別儀主機各部分功能如(ru)下：

1.　電源(yuan)開關：控制整機(ji)電源(yuan)通斷(duan)。

2.　電源輸(shu)入(ru)插座(zuo)：用(yong)儀器所配電源線(xian)，輸(shu)入(ru)50HZ、220V交流(liu)電源。儀器使(shi)(shi)用(yong)時，應獨立使(shi)(shi)用(yong)三孔電源插座(zuo)，插座(zuo)接地(di)線(xian)就近直接接地(di)。

3.　保險(xian)座：儀(yi)器使用10A保險(xian)芯，損壞時(shi)應換(huan)同規格保險(xian)芯。

4.　黑接(jie)線(xian)柱：測試(shi)時，用(yong)配(pei)套黑色測試(shi)線(xian)（Ф4插頭）插入此插孔，另一端測試(shi)夾接(jie)系統(tong)地。

5.　紅接線(xian)柱：測(ce)(ce)試(shi)時，用(yong)配(pei)套紅色測(ce)(ce)試(shi)線(xian)（Ф4插(cha)頭(tou)）插(cha)入此插(cha)孔，另(ling)一端(duan)測(ce)(ce)試(shi)夾接被測(ce)(ce)電(dian)纜芯線(xian)。

6.　表頭：指示輸出(chu)電流大小。7.輸出(chu)調節；調節輸出(chu)電流大小。

7、輸(shu)(shu)出調節旋(xuan)鈕：用于輸(shu)(shu)出幅度大小的調節。以不滿(man)刻度打表為原則。

接收機各(ge)部分功能如下：

1. 靈敏度調節：順時針旋(xuan)轉，接收機電表指示值增大，逆(ni)時針旋(xuan)轉，指示值變小。

2. 表頭：指示(shi)輸入信(xin)號幅度(du)大(da)小與(yu)極性。

三、工作方法

帶(dai)電(dian)(dian)電(dian)(dian)纜(lan)設備儀信號發(fa)生器由交(jiao)流(liu)電(dian)(dian)源供電(dian)(dian)，它對已斷(duan)電(dian)(dian)的(de)(de)、要(yao)識(shi)(shi)別(bie)的(de)(de)電(dian)(dian)纜(lan)加上固定周期(qi)單極性的(de)(de)直流(liu)脈(mo)沖。工作(zuo)時，將(jiang)發(fa)生器輸出線(xian)連(lian)在電(dian)(dian)纜(lan)芯線(xian)和(he)接地點或(huo)地釘上，該電(dian)(dian)纜(lan)線(xian)鎧裝與大(da)地斷(duan)開(kai)，芯線(xian)在遠端(duan)與接地點或(huo)地釘相連(lian)，該回路可(ke)傳導脈(mo)沖電(dian)(dian)流(liu)，它可(ke)由識(shi)(shi)別(bie)儀上的(de)(de)表頭讀出，電(dian)(dian)流(liu)大(da)小由環路電(dian)(dian)阻決定，環路電(dian)(dian)阻應(ying)盡可(ke)能小。

為保(bao)證(zheng)環路(lu)電(dian)(dian)阻的阻抗(kang)盡可能低，地釘(ding)與地之間要(yao)保(bao)證(zheng)接觸(chu)良好（將地釘(ding)附近的地方弄濕）。發射(she)機(ji)與電(dian)(dian)纜(lan)連(lian)接正(zheng)確但無(wu)輸出(chu)，說(shuo)明環路(lu)電(dian)(dian)阻太大或(huo)未構成測試回路(lu)，應檢查終(zhong)端接地。【將發射(she)機(ji)兩輸出(chu)夾(jia)短接，表頭有輸出(chu)，證(zheng)明儀器完好】警告：為確保(bao)人(ren)身(shen)安(an)全(quan)，對已確定的電(dian)(dian)纜(lan)，在維修開鋸前(qian)，一定要(yao)進(jin)行扎釘(ding)試驗，可選DS1102型(xing)電(dian)(dian)纜(lan)安(an)全(quan)刺(ci)扎器。

四、配套

帶(dai)電電纜設備儀主機　　　1臺　　　　

電源線　　　1條

帶電電纜設備(bei)儀接收機(ji)　　1臺　　　

說明書　　　1本

合(he)格證　　　　　　　　　　1份(fen)　　　　

測試線　　　2條

保(bao)修卡　　　　　　　　　　1份

注：1.測試時電(dian)流(liu)鉗上的紅色箭頭標(biao)記(ji)指向電(dian)纜遠端！

2.發射(she)機(ji)輸(shu)出電流(liu)調節大也超(chao)不(bu)過(guo)5A時，應(ying)檢查接地(di)電阻，也可另打地(di)釬。【對端(duan)芯線(xian)接地(di)后，在首端(duan)測量(liang)芯地(di)間電阻越小，輸(shu)出電流(liu)越大】

3.發射機(ji)(ji)正常工作電流應調(diao)到大(da)于10A小于30A[5A可(ke)工作]，電流大(da)時(shi)接收(shou)(shou)機(ji)(ji)指示明顯(xian)。發射機(ji)(ji)輸(shu)出正常但接收(shou)(shou)機(ji)(ji)無指示，大(da)多(duo)是(shi)卡鉗口未閉合，請張開鉗口，快(kuai)速(su)讓其卡、卡閉合幾次就可(ke)解(jie)決問題。