在使用首先在探(tan)(tan)(tan)測(ce)之前,要弄(nong)清漏電(dian)(dian)故(gu)(gu)(gu)(gu)(gu)障線(xian)的性質,向(xiang)線(xian)路送(song)電(dian)(dian)。如(ru)果只是(shi)絕(jue)緣(yuan)損(sun)壞向(xiang)大地(di)漏電(dian)(dian),線(xian)路不短路,不斷(duan)線(xian)時,可(ke)用常(chang)規向(xiang)線(xian)路送(song)電(dian)(dian);如(ru)果線(xian)間短路且(qie)漏電(dian)(dian)或線(xian)間絕(jue)緣(yuan)正常(chang),有部分(fen)斷(duan)線(xian)且(qie)漏電(dian)(dian)時,可(ke)將本路所有的線(xian)(三線(xian)或四線(xian))并接(jie)在一(yi)(yi)起(qi),向(xiang)線(xian)路單相(xiang)送(song)電(dian)(dian);如(ru)果對(dui)地(di)絕(jue)緣(yuan)良好,內芯斷(duan)線(xian)故(gu)(gu)(gu)(gu)(gu)障時,可(ke)將所有好線(xian)及斷(duan)芯故(gu)(gu)(gu)(gu)(gu)障線(xian)的一(yi)(yi)端(duan)一(yi)(yi)并接(jie)地(di),由故(gu)(gu)(gu)(gu)(gu)障線(xian)的另一(yi)(yi)端(duan)向(xiang)故(gu)(gu)(gu)(gu)(gu)障線(xian)送(song)單相(xiang)電(dian)(dian)源(yuan)。本儀(yi)器需一(yi)(yi)人(ren)操作。將的耳(er)機插頭插入(ru)儀(yi)器耳(er)機孔,按下(xia)開關,指示燈亮(liang)。將探(tan)(tan)(tan)測(ce)板上的連線(xian)分(fen)別(bie)接(jie)在紅黑接(jie)線(xian)柱(zhu)上,然(ran)后(hou)把探(tan)(tan)(tan)測(ce)板相(xiang)碰幾下(xia),同時耳(er)機內應聽到(dao)咯(ge)叭聲(sheng),機器屬正常(chang)。把帶釘的探(tan)(tan)(tan)測(ce)板分(fen)別(bie)扣在探(tan)(tan)(tan)測(ce)員(yuan)的左右腳(jiao)上,做為探(tan)(tan)(tan)測(ce)器的兩(liang)個接(jie)地(di)點,然(ran)后(hou)就可(ke)以對(dui)地(di)埋線(xian)進行探(tan)(tan)(tan)測(ce)。在地(di)埋線(xian)上方從線(xian)路的一(yi)(yi)端(duan)向(xiang)另一(yi)(yi)端(duan)探(tan)(tan)(tan)測(ce),緩慢向(xiang)前行走,在對(dui)地(di)絕(jue)緣(yuan)良好的線(xian)段,耳(er)機基本無(wu)聲(sheng),在臨(lin)近故(gu)(gu)(gu)(gu)(gu)障點(C)時,聲(sheng)音(yin)逐漸由小到(dao)大,到(dao)故(gu)(gu)(gu)(gu)(gu)障點(A)時,聲(sheng)音(yin)zui大,當越過(guo)故(gu)(gu)(gu)(gu)(gu)障點到(dao)(B)時,聲(sheng)音(yin)則(ze)由大變小至(zhi)無(wu)聲(sheng),然(ran)后(hou)可(ke)退回到(dao)聲(sheng)音(yin)zui大時的地(di)方(A),此點即為漏電(dian)(dian)故(gu)(gu)(gu)(gu)(gu)障點。
為了提高精(jing)度,再(zai)探測到故障(zhang)點(dian)時(shi),探測人員(yuan)的(de)(de)(de)雙腳要(yao)盡量(liang)拉開距離。以減小接(jie)地(di)點(dian)的(de)(de)(de)面積再(zai)探測一(yi)段時(shi)間后(hou),如(ru)發現指示燈亮度不(bu)夠時(shi),一(yi)定要(yao)充電后(hou)再(zai)進行探測。如(ru)地(di)埋(mai)線(xian)漏電故障(zhang)點(dian)太多或對地(di)埋(mai)線(xian)不(bu)能供電時(shi),可(ke)用(yong)B型(xing)機進行探測。用(yong)B型(xing)機進行探測時(shi),應首先把(ba)要(yao)測的(de)(de)(de)線(xian)路與高壓連(lian)線(xian)全部(bu)斷開。然后(hou)把(ba)大功率信號發射器的(de)(de)(de)紅色(se)接(jie)線(xian)柱,接(jie)在(zai)地(di)埋(mai)線(xian)其中(zhong)一(yi)根或多根線(xian)上,黑(hei)色(se)接(jie)線(xian)柱接(jie)上連(lian)線(xian),用(yong)長約5-15公分的(de)(de)(de)鐵釘釘在(zai)地(di)上(把(ba)接(jie)地(di)的(de)(de)(de)地(di)方(fang)用(yong)水灑(sa)濕),然后(hou)按以上步驟,就可(ke)進行探測。
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揚(yang)州蘇電(dian)電(dian)氣有限公司(si)技術部