中文字幕乱码人妻无码久久_国产欧美久久久久久精品一区二区_久久久久亚洲AV成人片乱码_国产成人无码一二三区视频

產品列表PRODUCTS LIST

發電機電位外移檢測儀

簡要描述:

別稱(cheng):電(dian)(dian)(dian)(dian)位(wei)差計(ji),發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)位(wei)差計(ji),發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機表面電(dian)(dian)(dian)(dian)位(wei)測試(shi)儀,發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)位(wei)外(wai)移(yi)測試(shi)儀,發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機定(ding)子手包絕(jue)緣(yuan)測試(shi)儀,發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機表面電(dian)(dian)(dian)(dian)位(wei)測量桿,發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機定(ding)子線圈(quan)端(duan)部(bu)表面電(dian)(dian)(dian)(dian)位(wei)測量儀. 發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)位(wei)外(wai)移(yi)檢測儀,發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機定(ding)子端(duan)部(bu)絕(jue)緣(yuan)測試(shi)儀,發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機手包絕(jue)緣(yuan)測量桿

在線留言

TFD-18發電機定子(zi)手(shou)包(bao)絕(jue)緣測(ce)量桿

 常規的(de)(de)(de)預防性試驗(yan)一般很難發現汽(qi)輪發電機(ji)內冷定(ding)子(zi)線(xian)(xian)端部(bu)(bu)絕(jue)緣的(de)(de)(de)缺陷。直流加壓表面電位法試驗(yan)能有效地(di)找(zhao)出定(ding)子(zi)線(xian)(xian)圈端部(bu)(bu)的(de)(de)(de)絕(jue)緣缺陷。定(ding)子(zi)端部(bu)(bu)相(xiang)間短路故障,造成很大的(de)(de)(de)經濟損失,為(wei)此,電力(li)工(gong)業(ye)部(bu)(bu)和機(ji)械工(gong)業(ye)部(bu)(bu)下達了安(an)生(sheng)技(ji)(1994)86號(hao)文(wen)件,規定(ding)了發電機(ji)端部(bu)(bu)手包絕(jue)緣測量(liang)(liang)試驗(yan)為(wei)發電機(ji)的(de)(de)(de)重要試驗(yan)項(xiang)目(mu)之一,TFD-18發電機(ji)定(ding)子(zi)端部(bu)(bu)表面電位測量(liang)(liang)桿是*86號(hao)文(wen)件精(jing)神的(de)(de)(de)高科(ke)技(ji)產品,它的(de)(de)(de)投(tou)入使用,極(ji)大地(di)提高了發電機(ji)的(de)(de)(de)檢(jian)修效率。

別稱:電(dian)(dian)(dian)位(wei)(wei)差(cha)計,發(fa)(fa)電(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)位(wei)(wei)差(cha)計,發(fa)(fa)電(dian)(dian)(dian)機(ji)表面電(dian)(dian)(dian)位(wei)(wei)測(ce)(ce)(ce)試(shi)儀(yi),發(fa)(fa)電(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)位(wei)(wei)外移測(ce)(ce)(ce)試(shi)儀(yi),發(fa)(fa)電(dian)(dian)(dian)機(ji)定(ding)(ding)(ding)子手包(bao)絕緣測(ce)(ce)(ce)試(shi)儀(yi),發(fa)(fa)電(dian)(dian)(dian)機(ji)表面電(dian)(dian)(dian)位(wei)(wei)測(ce)(ce)(ce)量桿(gan),發(fa)(fa)電(dian)(dian)(dian)機(ji)定(ding)(ding)(ding)子線圈端部(bu)表面電(dian)(dian)(dian)位(wei)(wei)測(ce)(ce)(ce)量儀(yi). 發(fa)(fa)電(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)位(wei)(wei)外移檢測(ce)(ce)(ce)儀(yi),發(fa)(fa)電(dian)(dian)(dian)機(ji)定(ding)(ding)(ding)子端部(bu)絕緣測(ce)(ce)(ce)試(shi)儀(yi),發(fa)(fa)電(dian)(dian)(dian)機(ji)手包(bao)絕緣測(ce)(ce)(ce)量桿(gan)

發電機定子端部絕緣測試儀,是利用表面電位法(又稱電位外移法)檢測發電機定子線棒絕緣缺陷的絕緣測試方法。通過檢測定子端部手包絕緣的密實性及相對絕緣強度。它可以彌補發電機定子繞組交、直流耐壓試驗所發現不了的端部絕緣缺陷的不足。可以發現引線包絕緣不良,線圈鼻端絕緣包扎缺陷,絕緣盒填充泥填充不滿,綁扎滌玻繩固化不良及端部接頭處定子空心銅線焊接質量不良造成的滲透等缺陷。發電機定子線圈端部表面電位測量是一項新的試驗項目,線圈端部起到了監督作用,進一步提高了發電機安全運行的可靠性。
 

技術參數:

 1.輸(shu)入電阻(zu)100M

 2.測試電壓:DC0-30KV

 3.電壓(ya)精度:1.0%

試驗方法:

1 試(shi)驗標準(zhun)發電(dian)(dian)(dian)機(ji)定(ding)子線圈端部(bu)絕(jue)緣判斷標準(zhun),是加2 倍(bei)的額定(ding)電(dian)(dian)(dian)壓(ya),漏泄電(dian)(dian)(dian)流不(bu)大于1微安

2 試(shi)驗儀器(qi)直流高(gao)壓發生裝置(zhi)

3 測試原理將直流電壓加在定子線棒正常時由于線棒絕緣的體積電阻Ρρ 遠遠大于表面電阻ρσ , 對地電壓很低, 若某一線棒絕緣存在缺陷,它
的電壓(ya)分(fen)布將發生明顯的變化(hua),絕緣(yuan)存(cun)在缺陷(xian)時, Ρρ 減小,絕緣(yuan)壓(ya)降也(ye)降低,致(zhi)使缺陷(xian)部位對地電壓(ya)增高。

4 測試方法將繞組三相引出線用導線短路連接,直流高壓發生器加2倍電壓
,用(yong)發(fa)電(dian)機電(dian)位外移試(shi)驗儀測試(shi)電(dian)壓和電(dian)流

5.發電(dian)機(ji)電(dian)位外移(yi)試驗儀接線(xian)圖

6.尾棒的(de)地(di)線(xian)一定(ding)與高壓發生裝置(zhi)的(de)地(di)線(xian)接在一起。

注意事項:

1、錫(xi)箔紙纏(chan)包端(duan)部時,一定要(yao)包裹(guo)緊密,否則(ze)錫(xi)箔紙和絕緣表面會(hui)(hui)構成電(dian)容,測量桿(gan)接觸時會(hui)(hui)有較大的放電(dian)電(dian)流,造成誤判斷。

2、端(duan)部包裹時(shi)分為線棒側和引水管側,間(jian)隔大于3厘米,電位(wei)(wei)高時(shi)便于查找(zhao)是哪一側的(de)問題,其實zui主要的(de)點是根部和錐部,中間(jian)部位(wei)(wei)測量意義不大。

3、測量桿串(chuan)接的微安表(biao)用數字(zi)式微安表(biao),即便于(yu)讀數又可電流大時保護表(biao)記。

4、端部接頭因為在在機殼下部,不易測量,提前(qian)用引線引出。

5、zui重要的(de)是(shi)記正確異(yi)常槽(cao)號,避免張冠李戴,切記切記!

6、發電機不通(tong)水的情況下(xia)進行試(shi)驗,要求先將定子冷卻水*吹(chui)凈。

聯系人
在線客服
用心服務 成就你我