如何利用變壓器直流電阻測試儀丈量變壓器繞組直流電阻？

      低壓(ya)變壓(ya)器整流電阻值(zhi)公(gong)測(ce)儀在(zai)(zai)側量(liang)電(dian)(dian)(dian)力電(dian)(dian)(dian)力變(bian)(bian)壓(ya)器電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)定(ding)子(zi)的(de)(de)直流電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)力變(bian)(bian)壓(ya)器電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)定(ding)子(zi)電(dian)(dian)(dian)容值(zhi)的(de)(de)總體目標是查抄電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)定(ding)子(zi)談論的(de)(de)電(dian)(dian)(dian)焊茶葉品質和電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)定(ding)子(zi)之前都(dou)不(bu)能存(cun)在(zai)(zai)的(de)(de)漏(lou)電(dian)(dian)(dian)等(deng)問(wen)題。線電(dian)(dian)(dian)壓(ya)抽頭(tou)電(dian)(dian)(dian)源(yuan)(yuan)開關的(de)(de)接觸點(dian)國(guo)(guo)際影響(xiang)力都(dou)不(bu)能很(hen)好(hao)，抽頭(tou)的(de)(de)顯(xian)示國(guo)(guo)際影響(xiang)力都(dou)不(bu)能婚姻配對；電(dian)(dian)(dian)源(yuan)(yuan)線都(dou)不(bu)能斷(duan)。絞(jiao)合的(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)線和電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)定(ding)子(zi)斷(duan)股。在(zai)(zai)對電(dian)(dian)(dian)力電(dian)(dian)(dian)力變(bian)(bian)壓(ya)器開始所需(xu)大(da)修時，或許(xu)在(zai)(zai)的(de)(de)變(bian)(bian)化(hua)抽頭(tou)國(guo)(guo)際影響(xiang)力后來(lai)，或許(xu)在(zai)(zai)出口(kou)型小毛(mao)病(bing)被漏(lou)電(dian)(dian)(dian)等(deng)問(wen)題后來(lai)，都(dou)所需(xu)側量(liang)電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)定(ding)子(zi)的(de)(de)直流電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)力變(bian)(bian)壓(ya)器電(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)定(ding)子(zi)電(dian)(dian)(dian)容值(zhi)和穿墻套管。

　　電力變壓器直流電內阻檢(jian)驗(yan)儀(yi)仗量技(ji)巧以內：

　　（1）電(dian)(dian)流，電(dian)(dian)壓表法，也(ye)稱為(wei)電(dian)(dian)壓降法，道理是在被測電(dian)(dian)阻中通(tong)過(guo)直流電(dian)(dian)，丈量(liang)電(dian)(dian)阻上的(de)電(dian)(dian)壓降，按(an)照(zhao)歐姆(mu)定律計較出被測電(dian)(dian)阻值。由于電(dian)(dian)流表和電(dian)(dian)壓表的(de)外部電(dian)(dian)阻會影響丈量(liang)功效，是以應細心斟酌它們與(yu)丈量(liang)電(dian)(dian)路的(de)跟尾體(ti)例。

　　赫茲電力|HZ-100A直流電阻測試儀

　　（2）均衡(heng)電(dian)橋法(fa)。

　　她是是一種利用率(lv)電橋多樣化大道(dao)理測量直(zhi)流電壓(ya)繞阻熱敏電阻的(de)步(bu)驟。

　　經常合理利(li)用的多(duo)樣(yang)化橋有單臂(bei)橋和兩手橋每種。

　　變(bian)壓(ya)器(qi)直流(liu)電(dian)(dian)阻測試儀(yi)在丈量(liang)變(bian)壓(ya)器(qi)的(de)直流(liu)繞組電(dian)(dian)阻時(shi)(shi)，應在變(bian)壓(ya)器(qi)斷電(dian)(dian)并移除高壓(ya)導線以后(hou)實(shi)行。對于大型大容量(liang)電(dian)(dian)力變(bian)壓(ya)器(qi)，rl串連電(dian)(dian)路的(de)充電(dian)(dian)時(shi)(shi)辰常數τ很(hen)是(shi)大，使(shi)得每(mei)次丈量(liang)都需要很(hen)長時(shi)(shi)辰本領等待電(dian)(dian)流(liu)和電(dian)(dian)壓(ya)表唆使(shi)不變(bian)，是(shi)以任務效力很(hen)是(shi)低，并且常常利用(yong)(yong)特別(bie)儀(yi)器(qi)（比方恒定電(dian)(dian)流(liu)）。用(yong)(yong)電(dian)(dian)源取代(dai)測試中(zhong)的(de)電(dian)(dian)源，能(neng)夠(gou)大大削減測試時(shi)(shi)辰。

　　丈(zhang)(zhang)(zhang)量變(bian)(bian)(bian)壓器(qi)線(xian)(xian)(xian)(xian)(xian)圈(quan)的(de)(de)(de)(de)(de)(de)(de)(de)直流繞組(zu)電(dian)阻(zu)的(de)(de)(de)(de)(de)(de)(de)(de)規(gui)范是：對(dui)于(yu)(yu)(yu)1600kva以(yi)上(shang)的(de)(de)(de)(de)(de)(de)(de)(de)變(bian)(bian)(bian)壓器(qi)，每(mei)相(xiang)(xiang)(xiang)繞組(zu)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)阻(zu)之(zhi)(zhi)差(cha)(cha)應不(bu)(bu)(bu)(bu)超(chao)(chao)(chao)出(chu)(chu)(chu)三相(xiang)(xiang)(xiang)平(ping)均(jun)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)2％，并且(qie)(qie)中性(xing)線(xian)(xian)(xian)(xian)(xian)應無繞組(zu)點(dian)引(yin)出(chu)(chu)(chu)線(xian)(xian)(xian)(xian)(xian)。線(xian)(xian)(xian)(xian)(xian)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)不(bu)(bu)(bu)(bu)該(gai)大(da)于(yu)(yu)(yu)三相(xiang)(xiang)(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)平(ping)均(jun)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)1％，對(dui)于(yu)(yu)(yu)1600kva及以(yi)下的(de)(de)(de)(de)(de)(de)(de)(de)變(bian)(bian)(bian)壓器(qi)，相(xiang)(xiang)(xiang)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)普(pu)通(tong)(tong)不(bu)(bu)(bu)(bu)大(da)于(yu)(yu)(yu)三相(xiang)(xiang)(xiang)平(ping)均(jun)的(de)(de)(de)(de)(de)(de)(de)(de)4％，線(xian)(xian)(xian)(xian)(xian)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)為(wei)普(pu)通(tong)(tong)不(bu)(bu)(bu)(bu)超(chao)(chao)(chao)出(chu)(chu)(chu)三相(xiang)(xiang)(xiang)平(ping)均(jun)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)2％，與(yu)前(qian)一(yi)局(ju)部(bu)的(de)(de)(de)(de)(de)(de)(de)(de)丈(zhang)(zhang)(zhang)量值(zhi)(zhi)比(bi)擬，其轉(zhuan)變(bian)(bian)(bian)不(bu)(bu)(bu)(bu)該(gai)超(chao)(chao)(chao)出(chu)(chu)(chu)2％。并且(qie)(qie)中性(xing)點(dian)引(yin)出(chu)(chu)(chu)線(xian)(xian)(xian)(xian)(xian)不(bu)(bu)(bu)(bu)該(gai)環(huan)抱。線(xian)(xian)(xian)(xian)(xian)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)不(bu)(bu)(bu)(bu)該(gai)大(da)于(yu)(yu)(yu)三相(xiang)(xiang)(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)平(ping)均(jun)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)1％，對(dui)于(yu)(yu)(yu)1600kva及以(yi)下的(de)(de)(de)(de)(de)(de)(de)(de)變(bian)(bian)(bian)壓器(qi)，相(xiang)(xiang)(xiang)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)普(pu)通(tong)(tong)不(bu)(bu)(bu)(bu)大(da)于(yu)(yu)(yu)三相(xiang)(xiang)(xiang)平(ping)均(jun)的(de)(de)(de)(de)(de)(de)(de)(de)4％，線(xian)(xian)(xian)(xian)(xian)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)為(wei)普(pu)通(tong)(tong)不(bu)(bu)(bu)(bu)超(chao)(chao)(chao)出(chu)(chu)(chu)三相(xiang)(xiang)(xiang)平(ping)均(jun)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)2％，與(yu)前(qian)一(yi)局(ju)部(bu)的(de)(de)(de)(de)(de)(de)(de)(de)丈(zhang)(zhang)(zhang)量值(zhi)(zhi)比(bi)擬，其轉(zhuan)變(bian)(bian)(bian)不(bu)(bu)(bu)(bu)該(gai)超(chao)(chao)(chao)出(chu)(chu)(chu)2％。并且(qie)(qie)中性(xing)點(dian)引(yin)出(chu)(chu)(chu)線(xian)(xian)(xian)(xian)(xian)不(bu)(bu)(bu)(bu)該(gai)環(huan)抱。線(xian)(xian)(xian)(xian)(xian)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)不(bu)(bu)(bu)(bu)該(gai)大(da)于(yu)(yu)(yu)三相(xiang)(xiang)(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)平(ping)均(jun)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)1％，對(dui)于(yu)(yu)(yu)1600kva及以(yi)下的(de)(de)(de)(de)(de)(de)(de)(de)變(bian)(bian)(bian)壓器(qi)，相(xiang)(xiang)(xiang)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)普(pu)通(tong)(tong)不(bu)(bu)(bu)(bu)大(da)于(yu)(yu)(yu)三相(xiang)(xiang)(xiang)平(ping)均(jun)的(de)(de)(de)(de)(de)(de)(de)(de)4％，線(xian)(xian)(xian)(xian)(xian)之(zhi)(zhi)間的(de)(de)(de)(de)(de)(de)(de)(de)差(cha)(cha)為(wei)普(pu)通(tong)(tong)不(bu)(bu)(bu)(bu)超(chao)(chao)(chao)出(chu)(chu)(chu)三相(xiang)(xiang)(xiang)平(ping)均(jun)值(zhi)(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)2％，與(yu)前(qian)一(yi)局(ju)部(bu)的(de)(de)(de)(de)(de)(de)(de)(de)丈(zhang)(zhang)(zhang)量值(zhi)(zhi)比(bi)擬，其轉(zhuan)變(bian)(bian)(bian)不(bu)(bu)(bu)(bu)該(gai)超(chao)(chao)(chao)出(chu)(chu)(chu)2％。