10KV電(dian)(dian)(dian)(dian)(dian)動由(you)中大規模集(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)路(lu)組成(cheng)。本表輸(shu)出功率大，短(duan)路(lu)電(dian)(dian)(dian)(dian)(dian)流(liu)值高，輸(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)等(deng)級多(duo)（有四個電(dian)(dian)(dian)(dian)(dian)壓(ya)等(deng)級）。工作(zuo)原理為(wei)由(you)機(ji)內電(dian)(dian)(dian)(dian)(dian)池作(zuo)為(wei)電(dian)(dian)(dian)(dian)(dian)源經DC/DC變換(huan)產(chan)(chan)生的(de)直(zhi)流(liu)高壓(ya)由(you)E極(ji)出經被測試品到達L極(ji)，從(cong)而產(chan)(chan)生一個從(cong)E到L極(ji)的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)，經過(guo)I/V變換(huan)經除(chu)法器(qi)完成(cheng)運算直(zhi)接將被測的(de)絕(jue)緣電(dian)(dian)(dian)(dian)(dian)阻值由(you)LCD顯示出來

用(yong)戶(hu)可以根(gen)據(ju)試品(pin)特性和試驗(yan)(yan)規程(cheng)(cheng)要(yao)求選擇適用(yong)的(de)高(gao)壓(ya)(ya)兆歐表(biao)，選型(xing)(xing)的(de)原則(ze)主要(yao)是兆歐表(biao)試驗(yan)(yan)電(dian)(dian)壓(ya)(ya)等級(ji)，輸出(chu)短路電(dian)(dian)流和量(liang)程(cheng)(cheng)范圍符合規程(cheng)(cheng)要(yao)求，較高(gao)的(de)動態測(ce)(ce)量(liang)準(zhun)確度和抗現場干(gan)擾能力，使(shi)用(yong)安(an)全方便，較好(hao)的(de)性價比等。 根(gen)據(ju)檢測(ce)(ce)對象和要(yao)求區別，兆歐表(biao)大致可以劃分為普及型(xing)(xing)、主導型(xing)(xing)、和專用(yong)型(xing)(xing)三種，根(gen)據(ju)電(dian)(dian)力設備預防和交接試驗(yan)(yan)規程(cheng)(cheng)，用(yong)于測(ce)(ce)量(liang)試品(pin)絕(jue)緣電(dian)(dian)阻的(de)普及型(xing)(xing)兆歐表(biao)試驗(yan)(yan)電(dian)(dian)壓(ya)(ya)等級(ji)500V，1000V。

主導型10KV電(dian)動(dong)兆歐(ou)(ou)表主要(yao)測量試品的(de)絕緣電(dian)阻，吸收比或(huo)極化指(zhi)數(shu)，電(dian)壓等(deng)級為(wei)2500V，5000V。專用(yong)型兆歐(ou)(ou)表用(yong)于(yu)測量同步發電(dian)機(ji)，直流電(dian)機(ji)，交(jiao)流電(dian)動(dong)機(ji)等(deng)繞組的(de)絕緣電(dian)阻、吸收比和極化指(zhi)數(shu)。有時還要(yao)求測量或(huo)測算真實絕緣電(dian)阻值。 對于(yu)容性負載較大(da)的(de)試品，一般選用(yong)合適的(de)電(dian)壓等(deng)級和足夠大(da)的(de)輸出短路電(dian)流

絕緣值量程(cheng)范圍大(da)、自動(dong)對被檢(jian)測品放電的(de)兆歐表，否則R15S阻值將會影(ying)響(xiang)較(jiao)大(da)，而使吸收比檢(jian)測結果(guo)出現較(jiao)大(da)的(de)差值。

對于干擾較強的檢測現場，應選用指針式兆歐表，因為選用數字顯示的兆歐表，其測量數據有較大的跳動，從而無法確認真實的阻值，而指針式兆歐表本身對強磁場干擾比較滯緩（機械表頭阻尼作用）即使有影響，指針表頭顯示也只是有稍微的擺動，示值范圍也很直觀。 對于干擾較小，要求精確測量絕緣電阻值的場合，應選用數字顯示兆歐表，因為數字顯示兆歐表直觀，精度較高。 對于要測量吸收比和極化指數等大容量試品場合，應選用能自動測量吸收比和極化指數的智能型兆歐表 。

可(ke)調高(gao)(gao)(gao)壓(ya)(ya)數字(zi)兆歐表(biao)(biao)(biao)測(ce)(ce)試測(ce)(ce)試電(dian)(dian)(dian)壓(ya)(ya)高(gao)(gao)(gao)，功率大(da)，被(bei)測(ce)(ce)量對(dui)(dui)象(xiang)往(wang)往(wang)又帶有 工(gong)頻泄漏或感應(ying)上高(gao)(gao)(gao)壓(ya)(ya)干擾電(dian)(dian)(dian)能，因此為(wei)(wei)了人身安全(quan)，使用(yong)該儀(yi)器(qi)(qi)首先一定要接(jie)(jie)好安 全(quan)接(jie)(jie)地(di)線！ 該儀(yi)表(biao)(biao)(biao)在高(gao)(gao)(gao)壓(ya)(ya)啟動后(hou)，請不要采用(yong)人工(gong)放(fang)電(dian)(dian)(dian)方式檢(jian)查儀(yi)表(biao)(biao)(biao)，在測(ce)(ce)試完畢后(hou)也應(ying)等(deng) 待儀(yi)表(biao)(biao)(biao)自動放(fang)電(dian)(dian)(dian)使電(dian)(dian)(dian)壓(ya)(ya)表(biao)(biao)(biao)回零(ling)后(hou)才進行例行安全(quan)需要的(de)(de)人工(gong)放(fang)電(dian)(dian)(dian)！因為(wei)(wei)短路放(fang)電(dian)(dian)(dian)的(de)(de)強 烈電(dian)(dian)(dian)脈沖波有損被(bei)測(ce)(ce)對(dui)(dui)象(xiang)的(de)(de)絕緣(yuan)(yuan)(yuan)壽命，如果脈沖竄入儀(yi)表(biao)(biao)(biao)，也有損儀(yi)表(biao)(biao)(biao)內的(de)(de)集成(cheng)電(dian)(dian)(dian)路！ GM-10kV可(ke)調高(gao)(gao)(gao)壓(ya)(ya)數字(zi)兆歐表(biao)(biao)(biao)測(ce)(ce)試是為(wei)(wei)了解(jie)決(jue)高(gao)(gao)(gao)壓(ya)(ya)變電(dian)(dian)(dian)站、發電(dian)(dian)(dian)廠現場強干擾下 對(dui)(dui)大(da)型高(gao)(gao)(gao)壓(ya)(ya)變壓(ya)(ya)器(qi)(qi)、電(dian)(dian)(dian)機電(dian)(dian)(dian)器(qi)(qi)、遠程電(dian)(dian)(dian)力電(dian)(dian)(dian)纜或埋設電(dian)(dian)(dian)纜等(deng)電(dian)(dian)(dian)氣絕緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)阻(zu)特(te)(te)性(xing)的(de)(de)測(ce)(ce)試 而設計研制(zhi)。它(ta)亦可(ke)用(yong)于廣(guang)泛領域的(de)(de)電(dian)(dian)(dian)氣絕緣(yuan)(yuan)(yuan)電(dian)(dian)(dian)阻(zu)特(te)(te)性(xing)測(ce)(ce)量。