該測試儀采用一種新型的(de)特殊(shu)電(dian)(dian)(dian)(dian)(dian)路，對(dui)試驗電(dian)(dian)(dian)(dian)(dian)壓波形進行監(jian)測，同(tong)時(shi)采集(ji)電(dian)(dian)(dian)(dian)(dian)流(liu)回路的(de)放電(dian)(dian)(dian)(dian)(dian)脈沖(chong)信號(hao)，自動判斷間隙(xi)何時(shi)放電(dian)(dian)(dian)(dian)(dian)，鎖存放電(dian)(dian)(dian)(dian)(dian)瞬(shun)間的(de)電(dian)(dian)(dian)(dian)(dian)壓峰值(zhi)，同(tong)時(shi)發出(chu)聲光報警信號(hao)，以提(ti)示試驗者，并(bing)迅速切斷試驗電(dian)(dian)(dian)(dian)(dian)源，保護試品和(he)試驗設備免遭過流(liu)損壞。

　　該(gai)測試(shi)儀集工(gong)頻高壓電源、測量(liang)、控(kong)制系(xi)統為(wei)一體，濃縮在(zai)一個鋁合金(jin)箱內，體積小，重量(liang)輕，防震耐摔(shuai)，操作簡單，攜帶方便。該(gai)測試(shi)儀設有零(ling)位、短路(lu)保護功(gong)能，安全可靠。

　　該測試(shi)儀測量系(xi)統采用峰值1/√ 2模式(shi)(shi)，由(you)3位(wei)數字(zi)式(shi)(shi)高速電壓表測量，并有(you)記憶(yi)功(gong)能，直(zhi)觀清晰。

　　工頻放電自動測試儀的操作步驟

　　1、將測制(zhi)箱與高(gao)壓變用電(dian)纜連接;

　　2、將測制箱接(jie)(jie)地端與高(gao)壓變接(jie)(jie)地端連接(jie)(jie)后從高(gao)壓變接(jie)(jie)地端接(jie)(jie)入(ru)地網(wang);

　　3、將(jiang)高(gao)壓(ya)(ya)端(duan)用(yong)高(gao)壓(ya)(ya)引線連(lian)接試品高(gao)壓(ya)(ya)端(duan)(高(gao)壓(ya)(ya)引線要有支(zhi)撐(cheng)或牽引絕緣物);

　　4、調壓(ya)器歸零(ling)(調壓(ya)器不(bu)歸零(ling)，不(bu)能啟動高壓(ya));

　　5、測(ce)(ce)(ce)試：打開(kai)電(dian)(dian)源(yuan)(yuan)開(kai)關(guan)(guan)，待(dai)“滴(di)(di)……”音停止(zhi)后(hou)，按(an)一下復位鈕(niu)，測(ce)(ce)(ce)量燈(紅)亮(liang)，放(fang)電(dian)(dian)燈(綠(lv))滅，電(dian)(dian)壓(ya)(ya)表指示回零，測(ce)(ce)(ce)試儀(yi)進(jin)入待(dai)機狀態，調節調壓(ya)(ya)器開(kai)始升壓(ya)(ya)，當測(ce)(ce)(ce)試儀(yi)放(fang)電(dian)(dian)燈亮(liang)，發出“滴(di)(di)……”報(bao)警聲后(hou)，表示試品(pin)(pin)已放(fang)電(dian)(dian)，測(ce)(ce)(ce)試儀(yi)已切斷(duan)高壓(ya)(ya)回路(lu)電(dian)(dian)源(yuan)(yuan)，被測(ce)(ce)(ce)數據記(ji)憶顯(xian)示在電(dian)(dian)壓(ya)(ya)表上。至此，試驗(yan)完畢，關(guan)(guan)閉電(dian)(dian)源(yuan)(yuan)開(kai)關(guan)(guan)，更換(huan)試品(pin)(pin)或拆線。

　　7、重復步驟3-5，即(ji)可進行下次試(shi)驗。