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產品名稱: 交(jiao)流耐壓(ya)(ya)變壓(ya)(ya)器

產品型號: WBTQSB-75KVA/100KV

產品展商: 其它品牌

產品文檔: 無(wu)相關(guan)文(wen)檔

產品簡介

WBTQSB-75KVA/100KV交流耐壓變壓器具有體積小、重量輕、不受氣候變化影響、電暈小、現場搬運無需靜止可使用，使用壽命長、免維修等特點。適用于電力系統、工礦企業、科研部門等對各種高壓電氣設備、電氣元件、絕緣材料進行工頻或直流高壓下的絕緣強度試驗。交流耐壓變壓器采用單框芯式鐵芯結構，初級繞組繞在鐵芯上，高壓繞組在外，這種同軸布置減少了漏磁通，因而增大了繞組間的耦合。

詳細介紹

一(yi)、WBTQSB-75KVA/100KV交流耐壓變壓器概(gai)述

YDQ系(xi)列高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)變壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)是根據《試(shi)驗(yan)變壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)》標準，在油(you)浸式試(shi)驗(yan)變壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)基礎上而設計生產(chan)的(de)(de)。SF6氣(qi)(qi)體具(ju)有良(liang)好的(de)(de)電(dian)(dian)氣(qi)(qi)絕(jue)緣(yuan)(yuan)性能及優異的(de)(de)滅弧性能，其耐壓(ya)(ya)(ya)(ya)(ya)(ya)強度為同一(yi)(yi)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)下(xia)氮氣(qi)(qi)的(de)(de)2.5倍，擊穿(chuan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)空氣(qi)(qi)的(de)(de)2.5倍。在0.25MPa下(xia)與油(you)的(de)(de)擊穿(chuan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)相等，在0.45MPa壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)下(xia)是油(you)的(de)(de)擊穿(chuan)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)2倍，是一(yi)(yi)種優于油(you)的(de)(de)新(xin)一(yi)(yi)代超高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)絕(jue)緣(yuan)(yuan)介質材料(liao)。該(gai)產(chan)品(pin)技術要求完全(quan)符合《ZBK-41006-89》標準，它是油(you)浸式輕(qing)(qing)型試(shi)驗(yan)變壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)換代產(chan)品(pin)。該(gai)產(chan)品(pin)具(ju)有體積(ji)小、重量輕(qing)(qing)、不(bu)受(shou)氣(qi)(qi)候變化(hua)影響、電(dian)(dian)暈(yun)小、現場搬運無需靜止可使用，使用壽命(ming)長、免維修(xiu)等特點(dian)。適用于電(dian)(dian)力(li)(li)系(xi)統、工礦(kuang)企業(ye)、科研部門等對(dui)各種高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)電(dian)(dian)氣(qi)(qi)設備、電(dian)(dian)氣(qi)(qi)元件、絕(jue)緣(yuan)(yuan)材料(liao)進行工頻(pin)或直流高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)下(xia)的(de)(de)絕(jue)緣(yuan)(yuan)強度試(shi)驗(yan)。

二、WBTQSB-75KVA/100KV交流耐壓變壓器產品結構

YDQ系列(lie)高(gao)(gao)壓(ya)試驗變壓(ya)器采用(yong)單框芯(xin)式鐵(tie)芯(xin)結構(gou)(gou)，初級繞(rao)組(zu)(zu)繞(rao)在鐵(tie)芯(xin)上，高(gao)(gao)壓(ya)繞(rao)組(zu)(zu)在外，這種同軸布置(zhi)減少(shao)了漏(lou)磁通，因而(er)增大了繞(rao)組(zu)(zu)間的耦合(he)。產品的外殼為圓柱灌式容器結構(gou)(gou)，能耐受0.8MPa以(yi)上壓(ya)力。其結構(gou)(gou)見圖1：

<strong><strong>SF6充氣型試驗變壓器</strong></strong>

三、WBTQSB-75KVA/100KV交流耐壓變壓器工作原理

YDQ系(xi)列高壓(ya)(ya)(ya)試(shi)驗(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)為(wei)(wei)單(dan)相變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)，聯結組標號Ⅰ.Ⅰ. 用工頻220V(10kVA以上為(wei)(wei)380V)電源接入 (為(wei)(wei)本(ben)公司生產的(de)(de)試(shi)驗(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)配套專(zhuan)用設備，詳(xiang)細資料(liao)請見其具體使(shi)用說明書)系(xi)列操作(zuo)(zuo)箱(臺(tai))，經操作(zuo)(zuo)箱內自偶調壓(ya)(ya)(ya)器(qi)(50kVA以上調壓(ya)(ya)(ya)器(qi)外附(fu))調節(jie)至0～200V(或(huo)0～400V)電壓(ya)(ya)(ya)輸出(chu)至YDQ試(shi)驗(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)的(de)(de)初級繞組，根據電磁(ci)感應原(yuan)理，在試(shi)驗(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)高壓(ya)(ya)(ya)繞組可獲得試(shi)驗(yan)(yan)所(suo)需(xu)的(de)(de)高電壓(ya)(ya)(ya)。

單臺YDQ系列高壓試驗變壓器的工作(zuo)原理圖見圖2。

單(dan)臺YDQ系(xi)列交(jiao)直(zhi)流(liu)高壓(ya)(ya)(ya)(ya)(ya)試驗變壓(ya)(ya)(ya)(ya)(ya)器的(de)工(gong)作(zuo)原(yuan)理圖見(jian)圖3，圖中高壓(ya)(ya)(ya)(ya)(ya)套管中裝有高壓(ya)(ya)(ya)(ya)(ya)硅(gui)堆，串接在高壓(ya)(ya)(ya)(ya)(ya)回路(lu)中作(zuo)半波整流(liu)，以獲得直(zhi)流(liu)高電壓(ya)(ya)(ya)(ya)(ya)。當(dang)用一短路(lu)桿將(jiang)高壓(ya)(ya)(ya)(ya)(ya)硅(gui)堆短接時，可(ke)獲得工(gong)頻高電壓(ya)(ya)(ya)(ya)(ya)，作(zuo)為交(jiao)流(liu)輸(shu)出狀態；取消短路(lu)桿時，作(zuo)為直(zhi)流(liu)輸(shu)出狀態。

試(shi)驗變壓器高壓套管(guan)中的高壓硅堆(dui)未(wei)畫出，其原理與上(shang)圖相同。

三(san)(san)(san)臺(tai)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)串(chuan)(chuan)級(ji)(ji)獲得更高電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)接線原理(li)見圖(tu)4。串(chuan)(chuan)級(ji)(ji)高壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)有很大(da)的(de)(de)(de)優越性，因為(wei)整個試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)裝置由幾臺(tai)單(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)組(zu)(zu)(zu)成(cheng)，單(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)容(rong)量小、電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)低、重(zhong)量輕(qing)，便于運(yun)輸和(he)安裝。它(ta)既然(ran)可(ke)串(chuan)(chuan)接成(cheng)高出幾倍的(de)(de)(de)單(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)輸出電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)組(zu)(zu)(zu)合使(shi)用，又可(ke)分(fen)開成(cheng)幾套單(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)單(dan)(dan)獨使(shi)用。整套裝置投資小，經濟實(shi)惠。圖(tu)5中，在**級(ji)(ji)和(he)**級(ji)(ji)的(de)(de)(de)每個單(dan)(dan)元試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)中都有一個勵(li)(li)磁繞組(zu)(zu)(zu)A1、C1和(he)A2、C2。在三(san)(san)(san)臺(tai)串(chuan)(chuan)級(ji)(ji)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)基本原理(li)中，低壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)源加在試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅰ的(de)(de)(de)初級(ji)(ji)繞組(zu)(zu)(zu)a1x1上，單(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅰ、Ⅱ、Ⅲ的(de)(de)(de)輸出電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)都是V。勵(li)(li)磁繞組(zu)(zu)(zu)A1、C1給(gei)**級(ji)(ji)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅱ的(de)(de)(de)初級(ji)(ji)繞組(zu)(zu)(zu)供電(dian)(dian)(dian)(dian)；**級(ji)(ji)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅱ的(de)(de)(de)勵(li)(li)磁繞組(zu)(zu)(zu)A2、C2給(gei)第(di)三(san)(san)(san)級(ji)(ji)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅲ的(de)(de)(de)初級(ji)(ji)繞組(zu)(zu)(zu)供電(dian)(dian)(dian)(dian)。**級(ji)(ji)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅱ和(he)第(di)三(san)(san)(san)級(ji)(ji)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅲ的(de)(de)(de)箱體分(fen)別(bie)處在對(dui)地(di)為(wei)1V和(he)2V的(de)(de)(de)高電(dian)(dian)(dian)(dian)位上，所以(yi)箱體對(dui)地(di)是絕緣的(de)(de)(de)，試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅰ的(de)(de)(de)箱體是接地(di)的(de)(de)(de)。這(zhe)樣**級(ji)(ji)、**級(ji)(ji)、第(di)三(san)(san)(san)級(ji)(ji)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)對(dui)地(di)的(de)(de)(de)額定輸出電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)分(fen)別(bie)為(wei)1V、2V、3V；其額定容(rong)量分(fen)別(bie)為(wei)3P、2P、1P。

YDQ系(xi)列高(gao)壓試(shi)驗變壓器做被(bei)試(shi)品的工頻耐(nai)壓試(shi)驗使用接線(xian)原理圖見(jian)圖5。

圖中：R1—限流(liu)電阻(zu)(zu)   FRC—阻(zu)(zu)容分(fen)壓(ya)器(qi) RF—球間隙保護電阻(zu)(zu) G—球間隙   CX—被(bei)試(shi)品

注：高壓尾必須可靠接地

工頻耐壓(ya)(ya)(ya)試驗中(zhong)限流(liu)(liu)電(dian)(dian)阻(zu)R1應根(gen)據試驗變壓(ya)(ya)(ya)器的額(e)定容(rong)(rong)量(liang)來選擇。如高壓(ya)(ya)(ya)側額(e)定輸(shu)出(chu)電(dian)(dian)流(liu)(liu)在(zai)100～300mA時(shi)，可(ke)取(qu)0.5～1Ω/V(試驗電(dian)(dian)壓(ya)(ya)(ya))；高壓(ya)(ya)(ya)側額(e)定輸(shu)出(chu)電(dian)(dian)流(liu)(liu)為(wei)1A以上時(shi)，可(ke)取(qu)1Ω/V(試驗電(dian)(dian)壓(ya)(ya)(ya))。常用(yong)(yong)水電(dian)(dian)阻(zu)作為(wei)限流(liu)(liu)電(dian)(dian)阻(zu)，管子(zi)長度可(ke)按150kV/m考慮，管子(zi)粗細(xi)應具有(you)足夠的熱(re)容(rong)(rong)量(liang)(水阻(zu)液配制方法：用(yong)(yong)蒸(zheng)餾水加入適量(liang)硫酸銅配制成各種不同(tong)的阻(zu)值)。

球間隙(xi)及保(bao)護(hu)電(dian)(dian)阻(zu)(zu)：當(dang)電(dian)(dian)壓超過(guo)球間隙(xi)整定(ding)值時(一般(ban)取試(shi)驗電(dian)(dian)壓的(de)110%~120%)，球間隙(xi)放(fang)電(dian)(dian)，對被試(shi)品起(qi)到保(bao)護(hu)作用(yong)。球間隙(xi)保(bao)護(hu)電(dian)(dian)阻(zu)(zu)可按1Ω/V(試(shi)驗電(dian)(dian)壓)選取。

在(zai)(zai)工頻耐(nai)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)中(zhong)，低(di)(di)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)側測(ce)量(liang)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(儀表(biao)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya))不是非常準(zhun)確的(de)，其(qi)原因是由于(yu)(yu)試(shi)驗(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器存(cun)在(zai)(zai)著漏抗(kang)，在(zai)(zai)這個漏抗(kang)上(shang)(shang)(shang)(shang)必然存(cun)在(zai)(zai)著壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)降或(huo)容(rong)升，使試(shi)品上(shang)(shang)(shang)(shang)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)低(di)(di)于(yu)(yu)或(huo)高(gao)于(yu)(yu)低(di)(di)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)側測(ce)量(liang)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)表(biao)上(shang)(shang)(shang)(shang)反(fan)映出(chu)來(lai)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)。工頻耐(nai)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)時，被試(shi)品上(shang)(shang)(shang)(shang)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)高(gao)于(yu)(yu)試(shi)驗(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器的(de)輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)，也就是所謂容(rong)升現象(xiang)。感應耐(nai)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)時，試(shi)驗(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器的(de)漏抗(kang)必然存(cun)在(zai)(zai)著壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)降。為了準(zhun)確測(ce)量(liang)被試(shi)品上(shang)(shang)(shang)(shang)所施加(jia)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)，因此常在(zai)(zai)高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)側接入(ru)FRC阻容(rong)分(fen)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器來(lai)測(ce)量(liang)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(見圖5)。

工頻耐(nai)壓(ya)試驗操作注意事項

1）試(shi)驗人員應做好(hao)分工，明確相互間(jian)聯系方(fang)法。并(bing)有專門人監護(hu)現場**及觀察試(shi)品狀(zhuang)態。

2）被試品應先清(qing)掃干凈(jing)，并**干燥，以免(mian)損壞(huai)被試品和試驗帶(dai)來的誤差。

3）對于大型試(shi)驗，一(yi)般都應先進行空升(sheng)試(shi)驗。即不(bu)接試(shi)品時(shi)升(sheng)壓至試(shi)驗電壓，校對各種表計，調整球間隙。

4）升壓速度(du)不能(neng)(neng)太(tai)快，并必須防止突(tu)(tu)然加(jia)壓。例如調壓器不在零(ling)位(wei)時(shi)突(tu)(tu)然合閘。也不能(neng)(neng)突(tu)(tu)然切斷電源，一般應在調壓器降至零(ling)位(wei)時(shi)拉閘。

5）當電(dian)壓(ya)升至試驗(yan)電(dian)壓(ya)時(shi)，開始計(ji)時(shi)，到(dao)1min后，迅速降壓(ya)到(dao)1/3試驗(yan)電(dian)壓(ya)以下時(shi)，才能拉開電(dian)源。

6）在升(sheng)壓(ya)或耐壓(ya)試驗過程中，如(ru)發(fa)現(xian)下列不正常情況(kuang)時，應(ying)立即降(jiang)壓(ya)，切斷(duan)電源。停止試驗并查明(ming)原因：①電壓(ya)表指針擺動很大；②發(fa)現(xian)絕緣燒焦(jiao)或冒煙(yan)；③被試品內有(you)不正常的(de)聲(sheng)音。

7）耐壓試驗前后(hou)應測量絕(jue)緣電阻，檢查(cha)絕(jue)緣情(qing)況。

試(shi)驗變(bian)壓器(qi)在做被試(shi)品的直流耐壓或(huo)泄露(lu)試(shi)驗時(shi)接(jie)線原理圖(tu)(tu)如(ru)圖(tu)(tu)6。

注：此試驗應(ying)先(xian)抽出短(duan)路桿“D”，圖6中所示(shi)。

圖(tu)中：VD—高壓(ya)硅堆(dui) R1—限流(liu)電阻  C1—高壓(ya)濾波電容 FRC—阻容分壓(ya)器 CX—被試品  μA—帶保(bao)護微安表

泄露試驗中(zhong)限流(liu)電(dian)(dian)(dian)(dian)阻(zu)R1選擇(ze)在額定輸出電(dian)(dian)(dian)(dian)壓時，輸出端短路電(dian)(dian)(dian)(dian)流(liu)不超過(guo)高壓硅(gui)堆(dui)的(de)*大整(zheng)流(liu)。如電(dian)(dian)(dian)(dian)壓硅(gui)堆(dui)的(de)*大整(zheng)流(liu)電(dian)(dian)(dian)(dian)流(liu)為(wei)100mA時用于(yu)60kV的(de)試驗裝置中(zhong)，限流(liu)電(dian)(dian)(dian)(dian)阻(zu)按R1=60/0.1=600kΩ選擇(ze)。限流(liu)電(dian)(dian)(dian)(dian)阻(zu)還應具有足(zu)夠(gou)的(de)容量和沿面放電(dian)(dian)(dian)(dian)距離(li)。

高(gao)壓濾波電容(rong)C1一般選擇在0.01~0.1μF，當被試品的(de)電容(rong)量(liang)很大時，C1可省略不用。

泄露試驗的操作及注意事項

1）試驗前(qian)應(ying)先檢查被試品是否停電(dian)，接地放電(dian)，一(yi)切對外連(lian)線是否擦干凈。要嚴防將試驗電(dian)壓加到有人工作的部位(wei)上去。

2）接(jie)好試驗(yan)裝置的接(jie)線(xian)后(hou)，應復查(cha)無誤后(hou)才可(ke)加壓(ya)。應特別(bie)注意檢查(cha)高(gao)壓(ya)設(she)備(bei)及引線(xian)與地、與操作(zuo)人員的**距離，被試品的外殼是否可(ke)靠接(jie)地，要按**規(gui)程中所規(gui)定的內容進行試驗(yan)。

3）對于大電(dian)(dian)(dian)容量(liang)設備應緩慢(man)升壓(ya)，防止被試品的充電(dian)(dian)(dian)電(dian)(dian)(dian)流燒(shao)壞微(wei)安表(biao)。必要時(shi)應分級加(jia)壓(ya)，分別讀取各級電(dian)(dian)(dian)壓(ya)下微(wei)安表(biao)的穩定(ding)讀數。

4）試(shi)驗(yan)(yan)過程中，應(ying)密(mi)切(qie)監視被(bei)試(shi)品、試(shi)驗(yan)(yan)裝置、微安表，一旦發生(sheng)擊穿、閃爍等異常(chang)現(xian)象(xiang)應(ying)立即降(jiang)壓，切(qie)斷電源(yuan)，并查明原因，詳細記錄。

5）試(shi)驗完畢，降壓，切(qie)斷電源后應將(jiang)被試(shi)品及試(shi)驗裝(zhuang)置本身(shen)充(chong)分放電。

四、WBTQSB-75KVA/100KV交流耐壓變壓器注意事項

1、按照您(nin)所進行的(de)試驗(yan)接(jie)(jie)好(hao)工作線路。試驗(yan)變壓器的(de)外(wai)殼以(yi)及操作系統的(de)外(wai)殼必須可靠接(jie)(jie)地(di)。試驗(yan)變壓器高壓繞(rao)組的(de)X端(高壓尾)以(yi)及測量繞(rao)組的(de)F端必須可靠接(jie)(jie)地(di)。

2、做(zuo)串級(ji)試驗(yan)(yan)時，**級(ji)、第三級(ji)試驗(yan)(yan)變壓(ya)(ya)器(qi)(qi)的(de)(de)低壓(ya)(ya)繞(rao)組(zu)的(de)(de)X端，測量繞(rao)組(zu)的(de)(de)F端以(yi)及高壓(ya)(ya)繞(rao)組(zu)的(de)(de)X端(高壓(ya)(ya)尾)均(jun)接(jie)本級(ji)試驗(yan)(yan)變壓(ya)(ya)器(qi)(qi)的(de)(de)外殼。**級(ji)、第三級(ji)試驗(yan)(yan)變壓(ya)(ya)器(qi)(qi)的(de)(de)外殼必須通過絕緣支架接(jie)地。

3、接通電(dian)源前(qian)，操(cao)作系統的調壓(ya)器必(bi)須調到零位后方可接通電(dian)源，合閘，開始升(sheng)壓(ya)。

4、從(cong)零開(kai)始均勻旋(xuan)轉(zhuan)調壓(ya)(ya)(ya)器手輪升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)。升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)方法(fa)有(you)：快速(su)(su)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)法(fa)，即(ji)(ji)20s逐(zhu)級(ji)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)法(fa)；慢(man)速(su)(su)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)法(fa)，即(ji)(ji)60s逐(zhu)級(ji)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)法(fa)；極慢(man)速(su)(su)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)法(fa)供選用。電(dian)壓(ya)(ya)(ya)從(cong)零開(kai)始按(an)一定(ding)(ding)的(de)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)方式和速(su)(su)度(du)上升(sheng)(sheng)(sheng)(sheng)到您所(suo)需(xu)的(de)額定(ding)(ding)試(shi)驗(yan)(yan)電(dian)壓(ya)(ya)(ya)的(de)75%后，在以(yi)每秒(miao)2%額定(ding)(ding)試(shi)驗(yan)(yan)電(dian)壓(ya)(ya)(ya)的(de)速(su)(su)度(du)升(sheng)(sheng)(sheng)(sheng)到您所(suo)需(xu)的(de)額定(ding)(ding)電(dian)壓(ya)(ya)(ya)，并密切注意測(ce)量(liang)儀表的(de)指示以(yi)及(ji)被試(shi)品(pin)的(de)情況(kuang)。升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)過(guo)程中或試(shi)驗(yan)(yan)過(guo)程中如發現測(ce)量(liang)儀表的(de)指示及(ji)被試(shi)品(pin)情況(kuang)異常，應立即(ji)(ji)降壓(ya)(ya)(ya)，切斷電(dian)源，查明情況(kuang)。

5、試(shi)驗完畢(bi)后，應在數秒內(nei)勻速的將調壓器返回至零位，然后切斷電源(yuan)。

6、本產品(pin)不得超過額定參數使用。除試(shi)驗必(bi)須外，決不允許全(quan)電(dian)壓通電(dian)或斷(duan)電(dian)。

7、再升壓或耐(nai)壓試驗(yan)過程(cheng)中，如發現(xian)以下不(bu)正常情況時，應立(li)即降壓，切斷電(dian)源(yuan)，停止(zhi)試驗(yan)并(bing)查明原(yuan)因。

⑴電壓(ya)表指針擺動(或(huo)數字跳動)很大

⑵電流表直線上升

被試品內有不正常的聲音

8、圖1中第9項系壓(ya)(ya)力(li)(li)閥(fa)及壓(ya)(ya)力(li)(li)表，為(wei)長期關閉(bi)狀態。每6個月開閥(fa)一次，以檢查SF6壓(ya)(ya)力(li)(li)，應不小于(yu)0.2MPa(檢查壓(ya)(ya)力(li)(li)后立即關閉(bi)閥(fa)門)，低于(yu)0.2MPa時應加SF6氣體，以增(zeng)加氣絕緣。

9、耐壓實(shi)驗前后應測量被試設備的絕緣電阻，檢查(cha)絕緣情況。

10、當試驗變壓器長期不使用時，應(ying)放置于通風、干燥、無陽光直射的地方。

11、該(gai)產品不允許在高于(yu)45℃的溫度下長期存(cun)放、使用(yong)、放氣(qi)。

12、運(yun)輸搬運(yun)途(tu)中不得(de)重(zhong)力沖擊(ji)。

13、產品緊固(gu)件及壓(ya)力閥、壓(ya)力表不(bu)得擅自松(song)動。

14、使用本(ben)(ben)產品(pin)做高(gao)壓試驗(yan)時，出熟悉(xi)本(ben)(ben)說明書(shu)外，還必須嚴格執行(xing)國家(jia)有關(guan)標準和操作規程。可參照GB311-83《高(gao)壓輸變設備(bei)的絕緣配(pei)合，高(gao)壓試驗(yan)技(ji)術》；《電氣設備(bei)預(yu)防性試驗(yan)規程》等。

五、WBTQSB-75KVA/100KV交流耐壓變壓器容量選擇

標稱試驗變壓(ya)器容量Pn的確定(ding)公(gong)式：Pn=kVn 2ωCt×10-9

式(shi)中：

Pn——標稱試驗變壓(ya)器容(rong)量(kVA)

Vn——試驗變壓器(qi)的額定輸出高壓的有效值(kV)

k ——**系數(shu)。k≥1，標稱電壓Vn≥1MV時，k=2；標稱電壓較低時，k值可取高一(yi)些。

Ct——被試品的電(dian)容量(pF)

ω——角頻(pin)率，ω=2πf， f——試驗電源的頻(pin)率

被試設備的電容量Ct可由交流(liu)電橋測出。Ct的變化很(hen)大，

可由設備(bei)的類型而定。

典型數(shu)據如(ru)下(xia)：

簡單的棒式或懸式絕緣子(zi) 幾十微(wei)法