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產品分類技術文章/ Technical Articles
1、對(dui)變(bian)壓(ya)器(qi)(qi)進(jin)(jin)行停電(dian)(dian)(dian)(dian),驗電(dian)(dian)(dian)(dian),放電(dian)(dian)(dian)(dian)處理(li)2、拆(chai)(chai)除變(bian)壓(ya)器(qi)(qi)的高低(di)壓(ya)側引出線(xian)(xian)(xian)中性點接(jie)(jie)地引線(xian)(xian)(xian)無需拆(chai)(chai)除3、使用直流(liu)電(dian)(dian)(dian)(dian)阻(zu)(zu)測(ce)(ce)(ce)(ce)試(shi)儀(yi)(yi)標配的標準電(dian)(dian)(dian)(dian)阻(zu)(zu),對(dui)儀(yi)(yi)器(qi)(qi)進(jin)(jin)行簡(jian)單校驗,確(que)保儀(yi)(yi)器(qi)(qi)精度無誤。4、接(jie)(jie)好直流(liu)電(dian)(dian)(dian)(dian)阻(zu)(zu)測(ce)(ce)(ce)(ce)試(shi)儀(yi)(yi)接(jie)(jie)地線(xian)(xian)(xian)5、對(dui)應(ying)顏(yan)色接(jie)(jie)好儀(yi)(yi)器(qi)(qi)的測(ce)(ce)(ce)(ce)試(shi)線(xian)(xian)(xian)夾,注意:粗(cu)的為I(電(dian)(dian)(dian)(dian)流(liu)端子)細的為U(電(dian)(dian)(dian)(dian)壓(ya)端子)6、打開儀(yi)(yi)器(qi)(qi)電(dian)(dian)(dian)(dian)源開關,選(xuan)(xuan)擇(ze)合適的電(dian)(dian)(dian)(dian)流(liu)檔位(可直接(jie)(jie)選(xuan)(xuan)擇(ze)自動檔位),按下測(ce)(ce)(ce)(ce)試(shi)按鍵,等待充電(dian)(dian)(dian)(dian)并(bing)測(ce)(ce)(ce)(ce)試(shi)完成7、待數據穩定(ding),讀取測(ce)(ce)(ce)(ce)試(shi)結果(guo),并(bing)按下儀(yi)(yi)器(qi)(qi)"復(fu)位"按鍵,對(dui)測(ce)(ce)(ce)(ce)試(shi)繞(rao)組(zu)進(jin)(jin)行放電(dian)(dian)(dian)(dian)8、更換(huan)被試(shi)品(pin)側接(jie)(jie)線(xian)(xian)(xian)至下一繞(rao)組(zu)進(jin)(jin)行測(ce)(ce)(ce)(ce)試(shi)。
絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)測(ce)(ce)(ce)試(shi)(shi)的(de)(de)(de)原理和影響測(ce)(ce)(ce)試(shi)(shi)結(jie)果(guo)的(de)(de)(de)因素一、絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)測(ce)(ce)(ce)試(shi)(shi)的(de)(de)(de)原理絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)測(ce)(ce)(ce)試(shi)(shi)儀(yi)對于絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)值(zhi)的(de)(de)(de)計算是(shi)基于歐(ou)姆定(ding)律的(de)(de)(de).通過(guo)輸出一個(ge)遠低于介(jie)電(dian)(dian)強度測(ce)(ce)(ce)試(shi)(shi)的(de)(de)(de)直(zhi)流電(dian)(dian)壓(ya),再(zai)測(ce)(ce)(ce)量(liang)出電(dian)(dian)流,就計算出絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)值(zhi)了實際上(shang),絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)的(de)(de)(de)阻(zu)值(zhi)已經非常大了,但也不是(shi)無限(xian)大,所以才能(neng)通過(guo)測(ce)(ce)(ce)量(liang)泄漏電(dian)(dian)流來進行(xing)計算,兆歐(ou)表(biao)可(ke)以顯示絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)的(de)(de)(de)電(dian)(dian)阻(zu)值(zhi),其結(jie)果(guo)一般是(shi)是(shi)kΩ、MΩ、GΩ,個(ge)別情況(kuang)下甚至達到了TΩ.絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)值(zhi)的(de)(de)(de)大小直(zhi)接表(biao)示了兩個(ge)導(dao)體之(zhi)間的(de)(de)(de)絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)質量(liang)。絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)測(ce)(ce)(ce)試(shi)(shi)儀(yi)二、影響絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)測(ce)(ce)(ce)試(shi)(shi)儀(yi)結(jie)果(guo)的(de)(de)(de)因素絕(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)電(dian)(dian)阻(zu)測(ce)(ce)(ce)試(shi)(shi)儀(yi)的(de)(de)(de)結(jie)...
高壓(ya)(ya)(ya)(ya)試(shi)(shi)驗變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)試(shi)(shi)驗操作(zuo)過(guo)程(cheng)試(shi)(shi)驗變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)做高壓(ya)(ya)(ya)(ya)電(dian)氣試(shi)(shi)驗時,必須由2人(ren)或(huo)2個以上人(ren)員參(can)加,并(bing)(bing)明(ming)確(que)做好分(fen)工,明(ming)確(que)相互(hu)間的(de)方法。并(bing)(bing)有專人(ren)監(jian)護現場(chang)安全及觀察試(shi)(shi)品的(de)試(shi)(shi)驗狀態;高壓(ya)(ya)(ya)(ya)試(shi)(shi)驗變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)和試(shi)(shi)驗變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)控制(zhi)箱應有可靠的(de)接(jie)(jie)(jie)地;試(shi)(shi)驗過(guo)程(cheng)中,升壓(ya)(ya)(ya)(ya)速度不能太快(kuai),也決不允(yun)許突然全電(dian)壓(ya)(ya)(ya)(ya)通(tong)電(dian)或(huo)斷(duan)電(dian)。首(shou)先按(an)接(jie)(jie)(jie)線原理圖連接(jie)(jie)(jie)好試(shi)(shi)驗變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)引線,并(bing)(bing)將(jiang)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)和控制(zhi)箱可靠接(jie)(jie)(jie)地;試(shi)(shi)驗前,檢(jian)查各部位(wei)的(de)接(jie)(jie)(jie)線是(shi)否(fou)接(jie)(jie)(jie)觸良好,并(bing)(bing)檢(jian)查控制(zhi)箱的(de)調(diao)壓(ya)(ya)(ya)(ya)器(qi)是(shi)否(fou)調(diao)至"零"位(wei);接(jie)(jie)(jie)通(tong)電(dian)源,綠色(se)指示(shi)燈亮,按(an)下啟(qi)動按(an)鈕,紅色(se)指示(shi)燈亮,表示(shi)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)已(yi)通(tong)電(dian)...
高(gao)(gao)壓(ya)開(kai)關動特性測試儀試驗(yan)高(gao)(gao)壓(ya)開(kai)關斷(duan)(duan)(duan)路(lu)(lu)(lu)器是電力系統(tong)zhui重要的(de)控(kong)制和(he)保(bao)護設備。高(gao)(gao)壓(ya)開(kai)關斷(duan)(duan)(duan)路(lu)(lu)(lu)器的(de)種(zhong)(zhong)類繁多(duo)(duo),數量很(hen)大(da)。高(gao)(gao)壓(ya)開(kai)關斷(duan)(duan)(duan)路(lu)(lu)(lu)器在(zai)正常運行(xing)中(zhong)用(yong)于接(jie)(jie)通(tong)高(gao)(gao)壓(ya)電路(lu)(lu)(lu)和(he)斷(duan)(duan)(duan)開(kai)負載,在(zai)發生事故的(de)情(qing)況(kuang)下(xia)用(yong)于切(qie)斷(duan)(duan)(duan)故障電流,必要時進行(xing)重合(he)閘。高(gao)(gao)壓(ya)開(kai)關斷(duan)(duan)(duan)路(lu)(lu)(lu)器的(de)工作狀況(kuang)及(ji)絕緣狀況(kuang)如(ru)何,直接(jie)(jie)影響電力系統(tong)的(de)安全可靠運行(xing)。目前國內電力系統(tong)中(zhong)大(da)量使用(yong)的(de)高(gao)(gao)壓(ya)斷(duan)(duan)(duan)路(lu)(lu)(lu)器按絕緣介質和(he)結構的(de)不(bu)同分為以下(xia)幾種(zhong)(zhong):多(duo)(duo)油高(gao)(gao)壓(ya)開(kai)關斷(duan)(duan)(duan)路(lu)(lu)(lu)器,多(duo)(duo)用(yong)于110KV及(ji)以下(xia)系統(tong);少(shao)油高(gao)(gao)壓(ya)開(kai)關斷(duan)(duan)(duan)路(lu)(lu)(lu)器,多(duo)(duo)用(yong)于6~22kv系統(tong);空氣高(gao)(gao)壓(ya)開(kai)關斷(duan)(duan)(duan)路(lu)(lu)(lu)器,...
高(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)氣(qi)設(she)(she)備(bei)(bei)(bei)試(shi)(shi)驗(yan)(yan)原理(li)一、緒論隨著(zhu)電(dian)(dian)力工(gong)業的(de)(de)(de)飛速(su)發展,機組參數、系統電(dian)(dian)壓(ya)(ya)(ya)等級逐步(bu)提高(gao)(gao),電(dian)(dian)氣(qi)設(she)(she)備(bei)(bei)(bei)的(de)(de)(de)絕(jue)緣(yuan)(yuan)(yuan)(yuan)強度、系統過電(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)限制(zhi)(zhi)水平(ping)對系統安全(quan)經濟(ji)運行(xing)的(de)(de)(de)影響日益突出(chu)。據統計,高(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)網的(de)(de)(de)各種故障多是(shi)由于(yu)高(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)氣(qi)設(she)(she)備(bei)(bei)(bei)絕(jue)緣(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)損壞(huai)所致,因(yin)此(ci)了解(jie)設(she)(she)備(bei)(bei)(bei)絕(jue)緣(yuan)(yuan)(yuan)(yuan)特性(xing),掌握絕(jue)緣(yuan)(yuan)(yuan)(yuan)狀況,不斷提高(gao)(gao)電(dian)(dian)氣(qi)設(she)(she)備(bei)(bei)(bei)絕(jue)緣(yuan)(yuan)(yuan)(yuan)水平(ping)是(shi)電(dian)(dian)力系統安全(quan)經濟(ji)運行(xing)的(de)(de)(de)根本保證。高(gao)(gao)壓(ya)(ya)(ya)電(dian)(dian)氣(qi)設(she)(she)備(bei)(bei)(bei)在(zai)運行(xing)中(zhong)必須保持良(liang)好的(de)(de)(de)絕(jue)緣(yuan)(yuan)(yuan)(yuan),為此(ci)從設(she)(she)備(bei)(bei)(bei)的(de)(de)(de)制(zhi)(zhi)造開始,要進行(xing)一系列絕(jue)緣(yuan)(yuan)(yuan)(yuan)測試(shi)(shi)。這些測試(shi)(shi)包括:在(zai)制(zhi)(zhi)造時(shi)對原材料的(de)(de)(de)試(shi)(shi)驗(yan)(yan)、制(zhi)(zhi)造過程的(de)(de)(de)中(zhong)間試(shi)(shi)驗(yan)(yan)、產品(pin)的(de)(de)(de)定性(xing)及出(chu)廠試(shi)(shi)驗(yan)(yan)、在(zai)...
(一(yi)(yi))發(fa)電(dian)機(ji)定(ding)子(zi)絕(jue)緣(yuan)性(xing)(xing)能(neng)的(de)檢測(ce)原(yuan)理在高壓發(fa)電(dian)機(ji)的(de)絕(jue)緣(yuan)測(ce)試(shi)工作(zuo)(zuo)中,測(ce)量(liang)(liang)定(ding)子(zi)繞組絕(jue)緣(yuan)電(dian)阻和吸收(shou)比是(shi)(shi)一(yi)(yi)種常(chang)用(yong)的(de)檢查絕(jue)緣(yuan)狀態的(de)方(fang)法。對于發(fa)電(dian)機(ji)絕(jue)緣(yuan)性(xing)(xing)能(neng)的(de)測(ce)試(shi),主要(yao)是(shi)(shi)測(ce)量(liang)(liang)一(yi)(yi)下幾(ji)個方(fang)面的(de)性(xing)(xing)能(neng)。(1)電(dian)氣性(xing)(xing)能(neng)測(ce)量(liang)(liang)所謂(wei)電(dian)氣性(xing)(xing)能(neng),是(shi)(shi)指絕(jue)緣(yuan)具有(you)的(de)耐電(dian)強度(du),并能(neng)承(cheng)受(shou)過(guo)電(dian)壓侵襲的(de)能(neng)力。通常(chang)在工作(zuo)(zuo)電(dian)壓及工作(zuo)(zuo)溫度(du)下,絕(jue)緣(yuan)的(de)介質損(sun)耗因數tgδ很小且較穩定(ding),同時具有(you)較高的(de)起始游離電(dian)壓,絕(jue)緣(yuan)壽命一(yi)(yi)般可達25-30年以(yi)上。(2)熱(re)(re)性(xing)(xing)能(neng)測(ce)量(liang)(liang)絕(jue)緣(yuan)的(de)熱(re)(re)性(xing)(xing)能(neng),是(shi)(shi)指絕(jue)緣(yuan)應具有(you)承(cheng)受(shou)持續熱(re)(re)作(zuo)(zuo)用(yong)的(de)耐熱(re)(re)性(xing)(xing)能(neng),也即在發(fa)電(dian)機(ji)工作(zuo)(zuo)溫度(du)...
絕(jue)緣(yuan)油(you)(you)擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)電(dian)(dian)壓(ya)在(zai)規定條(tiao)件下(xia)絕(jue)緣(yuan)油(you)(you)發(fa)生擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)的(de)(de)(de)電(dian)(dian)壓(ya)成為(wei)絕(jue)緣(yuan)油(you)(you)的(de)(de)(de)擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)電(dian)(dian)壓(ya),單位一般為(wei)KV,絕(jue)緣(yuan)油(you)(you)的(de)(de)(de)擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)電(dian)(dian)壓(ya)是衡量絕(jue)緣(yuan)油(you)(you)在(zai)電(dian)(dian)氣設(she)備內(nei)部(bu)能(neng)耐受電(dian)(dian)壓(ya)的(de)(de)(de)能(neng)力(也成為(wei)絕(jue)緣(yuan)油(you)(you)介電(dian)(dian)強(qiang)度)而不(bu)被破(po)快的(de)(de)(de)尺度,是檢驗變壓(ya)器油(you)(you)性能(neng)好壞(huai)的(de)(de)(de)主要手段之(zhi)一。它實際上是測試絕(jue)緣(yuan)油(you)(you)的(de)(de)(de)瞬間(jian)擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)電(dian)(dian)壓(ya)值。絕(jue)緣(yuan)油(you)(you)擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)原理(li)干凈的(de)(de)(de)絕(jue)緣(yuan)油(you)(you)中(zhong)總會(hui)有一些(xie)自由電(dian)(dian)子(zi)在(zai)外(wai)界的(de)(de)(de)高能(neng)射線(xian)作(zuo)(zuo)用下(xia)游離出(chu)米,或在(zai)同部(bu)強(qiang)場(chang)作(zuo)(zuo)用下(xia)從陰極冷射出(chu)來。這(zhe)些(xie)電(dian)(dian)子(zi)在(zai)電(dian)(dian)場(chang)作(zuo)(zuo)用下(xia),產生撞擊(ji)(ji)(ji)(ji)(ji)游離,終會(hui)導致絕(jue)緣(yuan)油(you)(you)擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)于這(zhe)種擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)*由電(dian)(dian)的(de)(de)(de)作(zuo)(zuo)用造成,故(gu)稱為(wei)“電(dian)(dian)擊(ji)(ji)(ji)(ji)(ji)穿(chuan)(chuan)”。工程上用...
如(ru)何選(xuan)擇大(da)(da)電(dian)(dian)(dian)流(liu)(liu)發(fa)(fa)生(sheng)器目前市面(mian)上(shang)的(de)大(da)(da)電(dian)(dian)(dian)流(liu)(liu)發(fa)(fa)生(sheng)器的(de)生(sheng)產廠(chang)家眾多,由于這些產品在(zai)(zai)質量(liang)上(shang)面(mian)都會存(cun)在(zai)(zai)一(yi)(yi)些差異,那么在(zai)(zai)進行選(xuan)擇的(de)過程(cheng)中我們到(dao)底要注(zhu)意哪(na)些方面(mian)的(de)問題呢?首(shou)先,在(zai)(zai)選(xuan)擇大(da)(da)電(dian)(dian)(dian)流(liu)(liu)測試儀的(de)過程(cheng)中一(yi)(yi)定要清楚自己的(de)需求,因(yin)為(wei)根(gen)據不同(tong)的(de)用(yong)途,所選(xuan)擇的(de)大(da)(da)電(dian)(dian)(dian)流(liu)(liu)發(fa)(fa)生(sheng)器的(de)容量(liang)和規格都是有(you)(you)著本(ben)質的(de)區別的(de),像常規使用(yong)的(de)規格,就有(you)(you)500A、1000A、2000A、等各(ge)個不同(tong)規格的(de)大(da)(da)電(dian)(dian)(dian)流(liu)(liu)發(fa)(fa)生(sheng)器,只有(you)(you)在(zai)(zai)了解清楚自己使用(yong)的(de)大(da)(da)電(dian)(dian)(dian)流(liu)(liu)發(fa)(fa)生(sheng)器設(she)備之后,然(ran)后有(you)(you)針對性的(de)進行選(xuan)擇,這樣才(cai)不會買錯規格,以電(dian)(dian)(dian)力工程(cheng)公司(si)為(wei)例,一(yi)(yi)...
有(you)載分(fen)(fen)(fen)接(jie)開(kai)關(guan)是(shi)與(yu)變壓器回路連接(jie)的(de)wei一運動(dong)部(bu)件,因此有(you)載分(fen)(fen)(fen)接(jie)開(kai)關(guan)的(de)檢測,越(yue)來(lai)越(yue)引起重(zhong)視(shi)。在《電力設備交接(jie)和預防(fang)性(xing)試(shi)驗規程(cheng)》中,要(yao)求檢查有(you)載分(fen)(fen)(fen)接(jie)開(kai)關(guan)的(de)動(dong)作順序,測量(liang)切換時(shi)(shi)間等。UAYZ-Ki系列變壓器有(you)載分(fen)(fen)(fen)接(jie)開(kai)關(guan)測試(shi)儀主要(yao)用(yong)于測量(liang)變壓器有(you)載分(fen)(fen)(fen)接(jie)開(kai)關(guan)的(de)過渡(du)波形、過渡(du)時(shi)(shi)間、各瞬間過渡(du)電阻值、三相(xiang)同期性(xing)等。該儀器智(zhi)能化程(cheng)度(du)高(gao),全(quan)部(bu)中文(wen)菜單提(ti)(ti)示,操作簡單。儀器體(ti)積小,重(zhong)量(liang)輕,抗干擾能力強,大(da)大(da)減(jian)輕了現場工作人(ren)員的(de)勞動(dong)強度(du),是(shi)發供電單位,變壓器制造行業保(bao)障安全(quan)生產,提(ti)(ti)高(gao)產品(pin)質量(liang)的(de)理想儀...
接(jie)觸(chu)(chu)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)測試(shi)儀對高壓(ya)斷(duan)路(lu)器有(you)哪些用(yong)途(tu)?1、由于(yu)(yu)開關觸(chu)(chu)頭(tou)之間存在(zai)(zai)(zai)氧(yang)化膜,如(ru)果用(yong)較小(xiao)的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)檢測,由于(yu)(yu)氧(yang)化膜的(de)影響測試(shi)結(jie)果一(yi)般(ban)偏(pian)大很多,但氧(yang)化膜在(zai)(zai)(zai)大電(dian)(dian)(dian)(dian)(dian)流(liu)下是能被(bei)擊穿的(de),理(li)論(lun)上(shang),測試(shi)電(dian)(dian)(dian)(dian)(dian)流(liu)只要不超(chao)過(guo)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)流(liu),應該是越大越好,但規程(cheng)在(zai)(zai)(zai)制(zhi)定(ding)(ding)的(de)時候(hou)考慮到當(dang)時國(guo)內相關儀器的(de)生產水平,作(zuo)出(chu)了不得小(xiao)于(yu)(yu)100A電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)規定(ding)(ding)。2、高壓(ya)斷(duan)路(lu)器導電(dian)(dian)(dian)(dian)(dian)回(hui)路(lu)的(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)主要取決于(yu)(yu)斷(duan)路(lu)器的(de)動、靜(jing)觸(chu)(chu)頭(tou)間的(de)接(jie)觸(chu)(chu)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)。接(jie)觸(chu)(chu)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)的(de)存在(zai)(zai)(zai),增(zeng)加了導體在(zai)(zai)(zai)通電(dian)(dian)(dian)(dian)(dian)時的(de)損(sun)耗(hao),使接(jie)觸(chu)(chu)處(chu)的(de)溫度(du)升高,其值的(de)大小(xiao)直接(jie)影響正常工作(zuo)時的(de)載流(liu)能力,在(zai)(zai)(zai)一(yi)定(ding)(ding)程(cheng)...