產品介紹
發(fa)(fa)(fa)(fa)電(dian)(dian)(dian)機(ji)(ji)表(biao)(biao)面電(dian)(dian)(dian)位(wei)外(wai)移(yi)測試(shi)儀是(shi)利用表(biao)(biao)面電(dian)(dian)(dian)位(wei)法(fa)（又稱電(dian)(dian)(dian)位(wei)外(wai)移(yi)法(fa)）檢測發(fa)(fa)(fa)(fa)電(dian)(dian)(dian)機(ji)(ji)定(ding)子線(xian)棒絕(jue)緣(yuan)(yuan)(yuan)(yuan)缺陷(xian)(xian)的(de)(de)絕(jue)緣(yuan)(yuan)(yuan)(yuan)測試(shi)方法(fa)。通過(guo)檢測定(ding)子端(duan)部(bu)手包絕(jue)緣(yuan)(yuan)(yuan)(yuan)的(de)(de)密實性(xing)(xing)及(ji)相對絕(jue)緣(yuan)(yuan)(yuan)(yuan)強度。它可(ke)以彌(mi)補(bu)發(fa)(fa)(fa)(fa)電(dian)(dian)(dian)機(ji)(ji)定(ding)子繞(rao)組交、直流耐壓試(shi)驗所發(fa)(fa)(fa)(fa)現不(bu)了(le)的(de)(de)端(duan)部(bu)絕(jue)緣(yuan)(yuan)(yuan)(yuan)缺陷(xian)(xian)的(de)(de)不(bu)足。可(ke)以發(fa)(fa)(fa)(fa)現引線(xian)包絕(jue)緣(yuan)(yuan)(yuan)(yuan)不(bu)良，線(xian)圈鼻端(duan)絕(jue)緣(yuan)(yuan)(yuan)(yuan)包扎缺陷(xian)(xian)，絕(jue)緣(yuan)(yuan)(yuan)(yuan)盒填充(chong)泥填充(chong)不(bu)滿，綁扎滌玻繩固化不(bu)良及(ji)端(duan)部(bu)接頭處(chu)定(ding)子空心銅線(xian)焊接質量(liang)不(bu)良造成的(de)(de)滲(shen)透等缺陷(xian)(xian)。發(fa)(fa)(fa)(fa)電(dian)(dian)(dian)機(ji)(ji)定(ding)子線(xian)圈端(duan)部(bu)表(biao)(biao)面電(dian)(dian)(dian)位(wei)測量(liang)是(shi)一(yi)項(xiang)新(xin)的(de)(de)試(shi)驗項(xiang)目，線(xian)圈端(duan)部(bu)起到了(le)監督(du)作用，進一(yi)步提高(gao)了(le)發(fa)(fa)(fa)(fa)電(dian)(dian)(dian)機(ji)(ji)安全(quan)運行的(de)(de)可(ke)靠性(xing)(xing)。

發電機表面電位外移測試儀產品特征
1采用內置電源供(gong)電,無須外接電源

2 標準(zhun)數(shu)字表(biao)直觀顯示(shi)被測試品的外移電位(wei)讀數(shu)及(ji)為直觀. 利用表(biao)面(mian)電位(wei)分布情況達到對端部絕緣的監測.

3.分體自選組合連接極大的(de)(de)方便(bian)了測試(shi)的(de)(de)需(xu)要

產品別稱
電位差計，表面電阻測試儀，發電機電位差計，發電機表面電位測試儀，發電機電位外移測試儀，發電機定子手包絕緣測試儀，發電機表面電位測量桿，發電機定子線圈端部表面電位測量儀. 發電機電位外移檢測儀，發電機定子端部絕緣測試儀，發電機手包絕緣測量桿
發電機表面電位外移測試儀技術參數
1．電壓精度：1.0%

2．輸入電阻100M

3．測試電壓：DC0-30KV

4． 試驗(yan)方法： 1 試驗(yan)標準(zhun)發電(dian)機定(ding)子(zi)線(xian)圈端部絕緣判斷(duan)標準(zhun)，是加2 倍的額(e)定(ding)電(dian)壓，漏泄電(dian)流不大于(yu)1微安

5． 試(shi)驗儀器直流高壓發(fa)生裝(zhuang)置

6． 原理(li)將直流電壓加在定子(zi)線棒(bang)正常時(shi)(shi)由于(yu)線棒(bang)絕(jue)(jue)緣(yuan)(yuan)(yuan)的(de)體積電阻(zu)Ρρ 遠遠大于(yu)表(biao)面電阻(zu)ρσ , 對地電壓很低， 若某一(yi)線棒(bang)絕(jue)(jue)緣(yuan)(yuan)(yuan)存(cun)在缺陷,它的(de)電壓分布將發(fa)生明顯(xian)的(de)變(bian)化,絕(jue)(jue)緣(yuan)(yuan)(yuan)存(cun)在缺陷時(shi)(shi), Ρρ 減(jian)小,絕(jue)(jue)緣(yuan)(yuan)(yuan)壓降也(ye)降低,致使缺陷部位對地電壓增(zeng)高。

7． 測(ce)(ce)試(shi)方(fang)法將繞組三相引出線(xian)(xian)用導線(xian)(xian)短(duan)路連(lian)接，直流高壓(ya)發生(sheng)器加2倍(bei)電(dian)(dian)(dian)壓(ya)，用發電(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)位(wei)外移(yi)試(shi)驗(yan)儀(yi)測(ce)(ce)試(shi)電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流 5．發電(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)位(wei)外移(yi)試(shi)驗(yan)儀(yi)接線(xian)(xian)圖(tu)

    8．尾棒的地線一定與高壓(ya)發生裝置的地線接(jie)在一起。