電纜外護套分析儀性(xing)能：地(di)(di)埋(mai)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)外護(hu)(hu)(hu)套故(gu)(gu)障(zhang)(zhang)(zhang)的測(ce)(ce)尋，同電(dian)(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)故(gu)(gu)障(zhang)(zhang)(zhang)探測(ce)(ce)一(yi)(yi)樣，一(yi)(yi)般要(yao)(yao)經過“初測(ce)(ce)”和(he)“定點”二個(ge)步驟(zou)，有時甚至還(huan)需要(yao)(yao)查(cha)找電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)路徑。外護(hu)(hu)(hu)套接(jie)地(di)(di)故(gu)(gu)障(zhang)(zhang)(zhang)的初測(ce)(ce)（測(ce)(ce)距(ju)）一(yi)(yi)般采用壓(ya)降法(fa)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)橋法(fa)測(ce)(ce)試。由于電(dian)(dian)(dian)(dian)(dian)(dian)橋法(fa)測(ce)(ce)試有局限性(xing)，不能測(ce)(ce)試多(duo)點接(jie)地(di)(di)故(gu)(gu)障(zhang)(zhang)(zhang)，也不能測(ce)(ce)試三相電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)鏈式(shi)接(jie)地(di)(di)連線的故(gu)(gu)障(zhang)(zhang)(zhang)。本儀(yi)器是針對外護(hu)(hu)(hu)套故(gu)(gu)障(zhang)(zhang)(zhang)的特點，采用壓(ya)降法(fa)初測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)外護(hu)(hu)(hu)套的接(jie)地(di)(di)故(gu)(gu)障(zhang)(zhang)(zhang)，再用跨(kua)步電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)法(fa)精確(que)查(cha)找故(gu)(gu)障(zhang)(zhang)(zhang)點。儀(yi)器用于交聯電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的外護(hu)(hu)(hu)套故(gu)(gu)障(zhang)(zhang)(zhang)探測(ce)(ce)；也可用于地(di)(di)埋(mai)線和(he)全塑線（無金屬護(hu)(hu)(hu)層電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)）故(gu)(gu)障(zhang)(zhang)(zhang)的探測(ce)(ce)；還(huan)可用作電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)外護(hu)(hu)(hu)套直(zhi)流(liu)泄(xie)漏試驗(yan)。

電纜外護套分析儀電壓調節及工作方式切(qie)換注意事項：

1、根(gen)據(ju)將要進行的測試(shi)類(lei)型選擇正確的工作方式。

進行(xing)泄漏(lou)測(ce)試將工(gong)作方(fang)式撥到“泄漏(lou)測(ce)試”；

進(jin)行外護套(tao)故障距(ju)離初測(ce)將工作方式撥到(dao)“DC1或(huo)DC2、DC3等”；

進行外護套(tao)故(gu)障(zhang)定點測試將工(gong)作方式撥到(dao)“AC1或AC2、AC3等(deng)”

2、工作方式切換時，先(xian)斷(duan)開電源(yuan)30秒以上；

3、電(dian)壓調節可以控制輸出(chu)電(dian)壓和輸出(chu)電(dian)流的(de)(de)大(da)小幅度，當升高電(dian)壓時，在(zai)負載一定的(de)(de)情況下，輸出(chu)的(de)(de)電(dian)流也會隨之增大(da)；

4、開(kai)機順序：

①按照將(jiang)要進行的試驗進行連線；

②選擇(ze)工作方式；

③將電(dian)壓調節幅度旋鈕逆(ni)時針旋到小；

④打開電源；

⑤逐步升(sheng)高試驗電壓。

三(san)、主要技術參(can)數(shu)

主  機  電    源(yuan)：AC220V±10%  5A；

泄漏試驗輸出電(dian)壓(ya)：DC  0∽10KV負(fu)極性；

定點和故障距離初測輸出(chu)電流：連續(xu)、斷續(xu)    0∽200mA 

體    積(ji)：340×320×260

重    量：10kg   

定點儀  靈(ling)敏度(du)：0.14V（未(wei)放(fang)大）

0.10mV（放大）

電  源：3×1.5V

重  量：0.5公斤