電纜識(shi)別儀由電纜識(shi)別發射機(ji)，電纜識(shi)別接收(shou)(shou)機(ji)、發射卡(ka)鉗和(he)接收(shou)(shou)卡(ka)鉗及輸出信(xin)號(hao)連接線組成。

電纜識別(bie)儀的主(zhu)要(yao)特點：

具有(you)大(da)功(gong)率電流(liu)脈沖輸出(chu)；

現場接(jie)收信號特(te)征清晰(xi)，輕便靈(ling)活，靈(ling)敏(min)度高(gao)，能有效抑制現場工頻干擾；

判(pan)斷準確、快速；保(bao)護電路可靠，不(bu)怕(pa)輸(shu)出短路；

大(da)鉗口ф125適合各種截面積(ji)的(de)動力電纜；

內部具有大功率隔離變壓(ya)器，操作者與市電不存在任(ren)何電氣上的直(zhi)接接觸；

極大的保證了(le)人身安全；

帶電(dian)(dian)電(dian)(dian)纜(lan)(lan)識(shi)(shi)別時(shi)不需要斷開各電(dian)(dian)纜(lan)(lan)兩端與變配電(dian)(dian)設備間的(de)(de)連接(jie)(jie)，可在(zai)電(dian)(dian)纜(lan)(lan)處于帶電(dian)(dian)的(de)(de)狀態下(xia)進行在(zai)線識(shi)(shi)別，提(ti)高了識(shi)(shi)別的(de)(de)效率(lv)，大(da)大(da)減(jian)少了由于停電(dian)(dian)所(suo)造成的(de)(de)直(zhi)接(jie)(jie)和(he)間接(jie)(jie)的(de)(de)經(jing)濟損失。

電(dian)纜(lan)識(shi)別儀工(gong)作原(yuan)理:

發射(she)機和接(jie)收(shou)機采用(yong)單片機編碼、解碼技術(shu)和廣泛應用(yong)在(zai)通信(xin)領域里的(de)(de)(de)(de)(de)PSK技術(shu)。在(zai)發射(she)卡(ka)鉗(qian)(qian)上發射(she)平均(jun)值為0 的(de)(de)(de)(de)(de)相位編碼信(xin)號(hao)，接(jie)收(shou)機中的(de)(de)(de)(de)(de)單片機對接(jie)收(shou)的(de)(de)(de)(de)(de)信(xin)號(hao)經過(guo)硬件(jian)和軟件(jian)的(de)(de)(de)(de)(de)濾波后(hou)，再(zai)進(jin)行(xing)相位識(shi)別(bie)。將(jiang)發射(she)卡(ka)鉗(qian)(qian)和接(jie)收(shou)卡(ka)鉗(qian)(qian)的(de)(de)(de)(de)(de)箭頭指向電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)終端，當接(jie)收(shou)機卡(ka)鉗(qian)(qian)鉗(qian)(qian)住(zhu)某根電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)，接(jie)收(shou)機電(dian)(dian)(dian)(dian)(dian)(dian)流表(biao)右偏(pian)，同時(shi)伴有聲光(guang)指示。而鉗(qian)(qian)住(zhu)其它的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)，電(dian)(dian)(dian)(dian)(dian)(dian)流表(biao)左偏(pian)，電(dian)(dian)(dian)(dian)(dian)(dian)流方(fang)向與(yu)被(bei)(bei)識(shi)別(bie)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流方(fang)向相反，沒有聲光(guang)指示。這(zhe)就體現(xian)了被(bei)(bei)識(shi)別(bie)的(de)(de)(de)(de)(de)目(mu)標電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)。很容易將(jiang)被(bei)(bei)識(shi)別(bie)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)從多(duo)根電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)中做出明確判別(bie)。又由于被(bei)(bei)識(shi)別(bie)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)上的(de)(de)(de)(de)(de)信(xin)號(hao)電(dian)(dian)(dian)(dian)(dian)(dian)流強度(du)(du)全線都(dou)是一(yi)樣的(de)(de)(de)(de)(de)，接(jie)收(shou)卡(ka)鉗(qian)(qian)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)沿線所接(jie)收(shou)到(dao)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁信(xin)號(hao)強度(du)(du)*，識(shi)別(bie)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)不受被(bei)(bei)識(shi)別(bie)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)長度(du)(du)的(de)(de)(de)(de)(de)限制。