共立交直流(liu)鉗(qian)形表是集(ji)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)(gan)器與(yu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)于(yu)一身的(de)(de)儀表(biao)，其(qi)工作原理與(yu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)互(hu)器測(ce)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)是一樣的(de)(de)。鉗(qian)形表(biao)是由電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)(gan)器和電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)組合而成(cheng)(cheng)。電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)(gan)器的(de)(de)鐵(tie)(tie)心在捏緊扳手時可(ke)以(yi)張開；被測(ce)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)所通過(guo)的(de)(de)導線(xian)(xian)(xian)可(ke)以(yi)不(bu)必(bi)切斷就(jiu)(jiu)可(ke)穿過(guo)鐵(tie)(tie)心張開的(de)(de)缺(que)口，當放開扳手后鐵(tie)(tie)心閉合。穿過(guo)鐵(tie)(tie)心的(de)(de)被測(ce)電(dian)(dian)(dian)(dian)路導線(xian)(xian)(xian)就(jiu)(jiu)成(cheng)(cheng)為電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)(gan)器的(de)(de)一次線(xian)(xian)(xian)圈(quan)，其(qi)中(zhong)通過(guo)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)便(bian)(bian)在二次線(xian)(xian)(xian)圈(quan)中(zhong)感(gan)(gan)應(ying)出電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)。從而使二次線(xian)(xian)(xian)圈(quan)相連(lian)接的(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)便(bian)(bian)有指示-----測(ce)出被測(ce)線(xian)(xian)(xian)路的(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)。使用時注意事項：
1）使用前(qian)應檢查外觀是(shi)否(fou)良好，絕緣(yuan)有無破損，手柄是(shi)否(fou)清潔、干燥。
2）測量(liang)時(shi)應戴絕緣手套(tao)或干凈的線手套(tao)，并注意(yi)保(bao)持安全(quan)距離。
3）測量過(guo)程中不得切換擋(dang)位。
4）電(dian)流(liu)表只能(neng)用來測(ce)量低(di)壓(ya)(ya)系統的(de)電(dian)流(liu)，被測(ce)線路的(de)電(dian)壓(ya)(ya)不能(neng)超過鉗形表所(suo)規定(ding)的(de)使(shi)用電(dian)壓(ya)(ya)。
5）測(ce)量只能鉗入一根導線。
6）一般不測量裸導線的電流(liu)。
7）使(shi)用完畢應將量(liang)程開(kai)關置(zhi)于最大擋位，以防下次(ci)使(shi)用時，因疏忽大意(yi)而造(zao)成儀表的(de)意(yi)外損壞(huai)。
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