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交流耐壓變壓器

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產品名稱: 交流耐壓(ya)(ya)變(bian)壓(ya)(ya)器

產品型號: WBYD-100KVA/100KV

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產品簡介

WBYD-100KVA/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、WBYD-100KVA/100KV交流耐壓變壓器概述

YDQ系(xi)(xi)列高壓(ya)(ya)(ya)試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)器(qi)(qi)是(shi)根據《試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)器(qi)(qi)》標(biao)(biao)準，在(zai)油(you)(you)浸式(shi)試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)器(qi)(qi)的基礎上而設計生(sheng)產(chan)的。SF6氣(qi)(qi)體具(ju)有良好的電(dian)(dian)(dian)氣(qi)(qi)絕緣(yuan)性能及優異的滅弧性能，其耐壓(ya)(ya)(ya)強(qiang)度為同一壓(ya)(ya)(ya)力(li)下氮(dan)氣(qi)(qi)的2.5倍(bei)，擊(ji)穿電(dian)(dian)(dian)壓(ya)(ya)(ya)的空氣(qi)(qi)的2.5倍(bei)。在(zai)0.25MPa下與油(you)(you)的擊(ji)穿電(dian)(dian)(dian)壓(ya)(ya)(ya)相等(deng)，在(zai)0.45MPa壓(ya)(ya)(ya)力(li)下是(shi)油(you)(you)的擊(ji)穿電(dian)(dian)(dian)壓(ya)(ya)(ya)的2倍(bei)，是(shi)一種優于油(you)(you)的新一代超高壓(ya)(ya)(ya)絕緣(yuan)介質材料。該產(chan)品(pin)技術要求完全符(fu)合《ZBK-41006-89》標(biao)(biao)準，它是(shi)油(you)(you)浸式(shi)輕型試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)器(qi)(qi)的換代產(chan)品(pin)。該產(chan)品(pin)具(ju)有體積小、重量輕、不受氣(qi)(qi)候變(bian)化影響(xiang)、電(dian)(dian)(dian)暈(yun)小、現場搬(ban)運無需(xu)靜(jing)止可使(shi)用，使(shi)用壽命(ming)長、免維修等(deng)特點。適用于電(dian)(dian)(dian)力(li)系(xi)(xi)統(tong)、工礦企業、科(ke)研部門等(deng)對各種高壓(ya)(ya)(ya)電(dian)(dian)(dian)氣(qi)(qi)設備、電(dian)(dian)(dian)氣(qi)(qi)元件(jian)、絕緣(yuan)材料進行(xing)工頻或直(zhi)流高壓(ya)(ya)(ya)下的絕緣(yuan)強(qiang)度試(shi)(shi)驗(yan)(yan)。

二、WBYD-100KVA/100KV交流耐壓變壓器產品結構

YDQ系列高壓試(shi)驗(yan)變壓器采(cai)用單框(kuang)芯式(shi)鐵芯結構(gou)，初級繞組繞在鐵芯上(shang)，高壓繞組在外，這(zhe)種同軸(zhou)布置(zhi)減少了漏磁通，因而增(zeng)大了繞組間的耦合(he)。產品的外殼為圓柱(zhu)灌式(shi)容器結構(gou)，能耐受0.8MPa以上(shang)壓力(li)。其結構(gou)見圖1：

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

三、WBYD-100KVA/100KV交流耐壓變壓器工作原理

YDQ系(xi)列高(gao)壓(ya)試驗(yan)變(bian)(bian)壓(ya)器為單相變(bian)(bian)壓(ya)器，聯結組(zu)(zu)標號Ⅰ.Ⅰ. 用(yong)工(gong)頻220V(10kVA以(yi)上為380V)電(dian)源(yuan)接(jie)入(ru) (為本公司生產的(de)(de)試驗(yan)變(bian)(bian)壓(ya)器配套專用(yong)設(she)備，詳細資(zi)料(liao)請(qing)見其(qi)具體使用(yong)說(shuo)明書)系(xi)列操作箱(xiang)(臺)，經(jing)操作箱(xiang)內(nei)自(zi)偶調(diao)壓(ya)器(50kVA以(yi)上調(diao)壓(ya)器外(wai)附(fu))調(diao)節至0～200V(或0～400V)電(dian)壓(ya)輸出至YDQ試驗(yan)變(bian)(bian)壓(ya)器的(de)(de)初(chu)級(ji)繞(rao)組(zu)(zu)，根據電(dian)磁感應原(yuan)理，在試驗(yan)變(bian)(bian)壓(ya)器高(gao)壓(ya)繞(rao)組(zu)(zu)可獲得試驗(yan)所需的(de)(de)高(gao)電(dian)壓(ya)。

單臺YDQ系列高壓(ya)試(shi)驗(yan)變(bian)壓(ya)器的工作原理圖見(jian)圖2。

單(dan)臺YDQ系列(lie)交直流高(gao)(gao)(gao)壓(ya)試驗變壓(ya)器的工作(zuo)原理圖見圖3，圖中(zhong)高(gao)(gao)(gao)壓(ya)套(tao)管中(zhong)裝有(you)高(gao)(gao)(gao)壓(ya)硅堆(dui)，串接在高(gao)(gao)(gao)壓(ya)回(hui)路中(zhong)作(zuo)半波整(zheng)流，以獲(huo)得直流高(gao)(gao)(gao)電壓(ya)。當(dang)用一(yi)短路桿(gan)將高(gao)(gao)(gao)壓(ya)硅堆(dui)短接時，可獲(huo)得工頻(pin)高(gao)(gao)(gao)電壓(ya)，作(zuo)為交流輸出狀(zhuang)態；取消短路桿(gan)時，作(zuo)為直流輸出狀(zhuang)態。

試驗變壓器(qi)高(gao)壓套管中的高(gao)壓硅堆(dui)未畫(hua)出，其原理與上圖(tu)相同。

三臺(tai)(tai)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)串(chuan)級(ji)(ji)獲得更高(gao)(gao)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)接(jie)線原理見圖4。串(chuan)級(ji)(ji)高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)有很大的(de)優(you)越性，因為(wei)整個(ge)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)裝(zhuang)置由幾臺(tai)(tai)單(dan)臺(tai)(tai)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)組成，單(dan)臺(tai)(tai)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)容(rong)(rong)量小、電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)低、重量輕，便(bian)于運輸和安(an)裝(zhuang)。它既然可串(chuan)接(jie)成高(gao)(gao)出幾倍的(de)單(dan)臺(tai)(tai)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)輸出電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)組合使(shi)用，又可分(fen)開成幾套單(dan)臺(tai)(tai)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)單(dan)獨使(shi)用。整套裝(zhuang)置投資(zi)小，經濟實惠。圖5中(zhong)，在(zai)**級(ji)(ji)和**級(ji)(ji)的(de)每個(ge)單(dan)元試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)中(zhong)都有一個(ge)勵(li)磁(ci)繞組A1、C1和A2、C2。在(zai)三臺(tai)(tai)串(chuan)級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)基本原理中(zhong)，低壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)電(dian)源加在(zai)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅰ的(de)初級(ji)(ji)繞組a1x1上，單(dan)臺(tai)(tai)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅰ、Ⅱ、Ⅲ的(de)輸出電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)都是V。勵(li)磁(ci)繞組A1、C1給**級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅱ的(de)初級(ji)(ji)繞組供(gong)電(dian)；**級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅱ的(de)勵(li)磁(ci)繞組A2、C2給第三級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅲ的(de)初級(ji)(ji)繞組供(gong)電(dian)。**級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅱ和第三級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅲ的(de)箱體分(fen)別(bie)處在(zai)對(dui)(dui)地為(wei)1V和2V的(de)高(gao)(gao)電(dian)位上，所以箱體對(dui)(dui)地是絕(jue)緣(yuan)的(de)，試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)Ⅰ的(de)箱體是接(jie)地的(de)。這樣**級(ji)(ji)、**級(ji)(ji)、第三級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)對(dui)(dui)地的(de)額定(ding)輸出電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)分(fen)別(bie)為(wei)1V、2V、3V；其(qi)額定(ding)容(rong)(rong)量分(fen)別(bie)為(wei)3P、2P、1P。

YDQ系列(lie)高壓試驗變壓器做(zuo)被試品的工頻耐(nai)壓試驗使用接(jie)線原理(li)圖見圖5。

圖中：R1—限流(liu)電阻(zu) FRC—阻(zu)容分壓器 RF—球間隙保護電阻(zu) G—球間隙 CX—被試品(pin)

注：高壓尾必須可靠接地

工頻耐壓(ya)(ya)(ya)試(shi)驗中限流(liu)電(dian)(dian)(dian)(dian)阻(zu)R1應根據試(shi)驗變壓(ya)(ya)(ya)器的額定容量來(lai)選擇。如高壓(ya)(ya)(ya)側額定輸(shu)出電(dian)(dian)(dian)(dian)流(liu)在100～300mA時(shi)，可(ke)取0.5～1Ω/V(試(shi)驗電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya))；高壓(ya)(ya)(ya)側額定輸(shu)出電(dian)(dian)(dian)(dian)流(liu)為1A以上時(shi)，可(ke)取1Ω/V(試(shi)驗電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya))。常(chang)用(yong)水電(dian)(dian)(dian)(dian)阻(zu)作為限流(liu)電(dian)(dian)(dian)(dian)阻(zu)，管子(zi)長度可(ke)按150kV/m考(kao)慮，管子(zi)粗細應具有足夠的熱(re)容量(水阻(zu)液配制方法：用(yong)蒸(zheng)餾(liu)水加入適量硫酸(suan)銅配制成各(ge)種(zhong)不同的阻(zu)值(zhi))。

球間隙(xi)及保護(hu)電(dian)(dian)(dian)(dian)阻：當電(dian)(dian)(dian)(dian)壓超(chao)過球間隙(xi)整(zheng)定值(zhi)時(shi)(一般取試(shi)驗電(dian)(dian)(dian)(dian)壓的110%~120%)，球間隙(xi)放電(dian)(dian)(dian)(dian)，對(dui)被試(shi)品起到保護(hu)作用。球間隙(xi)保護(hu)電(dian)(dian)(dian)(dian)阻可按1Ω/V(試(shi)驗電(dian)(dian)(dian)(dian)壓)選取。

在(zai)工頻耐(nai)壓(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)(yan)中(zhong)，低(di)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)側(ce)測(ce)(ce)量(liang)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(儀表電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya))不是非常準確(que)的(de)，其原因是由于(yu)(yu)試(shi)驗(yan)(yan)(yan)變壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)存(cun)在(zai)著(zhu)漏(lou)抗(kang)(kang)，在(zai)這個(ge)漏(lou)抗(kang)(kang)上(shang)(shang)必然(ran)存(cun)在(zai)著(zhu)壓(ya)(ya)(ya)(ya)(ya)(ya)降或容升(sheng)，使試(shi)品(pin)(pin)上(shang)(shang)的(de)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)低(di)于(yu)(yu)或高(gao)于(yu)(yu)低(di)壓(ya)(ya)(ya)(ya)(ya)(ya)側(ce)測(ce)(ce)量(liang)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)表上(shang)(shang)反映(ying)出來(lai)的(de)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)。工頻耐(nai)壓(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)(yan)時，被試(shi)品(pin)(pin)上(shang)(shang)的(de)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)高(gao)于(yu)(yu)試(shi)驗(yan)(yan)(yan)變壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)輸出電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)，也就是所謂容升(sheng)現象。感應耐(nai)壓(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)(yan)時，試(shi)驗(yan)(yan)(yan)變壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)漏(lou)抗(kang)(kang)必然(ran)存(cun)在(zai)著(zhu)壓(ya)(ya)(ya)(ya)(ya)(ya)降。為了準確(que)測(ce)(ce)量(liang)被試(shi)品(pin)(pin)上(shang)(shang)所施加的(de)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)，因此常在(zai)高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)側(ce)接入FRC阻容分壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)來(lai)測(ce)(ce)量(liang)電(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(見圖5)。

工頻耐壓(ya)試驗操作注意事項(xiang)

1）試(shi)驗人(ren)員(yuan)應做好分工，明(ming)確相互間聯系方法。并有(you)專(zhuan)門(men)人(ren)監(jian)護現場(chang)**及觀察試(shi)品狀態。

2）被(bei)(bei)試(shi)品應(ying)先清掃干凈，并(bing)**干燥，以免損壞被(bei)(bei)試(shi)品和試(shi)驗帶來的誤差。

3）對于(yu)大(da)型試驗(yan)，一般都應先進行空升(sheng)試驗(yan)。即不(bu)接試品時(shi)升(sheng)壓至試驗(yan)電壓，校對各種表計，調(diao)整球間(jian)隙。

4）升壓(ya)(ya)速度不(bu)能太快，并必須防止突然(ran)加壓(ya)(ya)。例如調壓(ya)(ya)器(qi)不(bu)在(zai)零位(wei)時(shi)突然(ran)合閘。也不(bu)能突然(ran)切斷電(dian)源，一(yi)般應在(zai)調壓(ya)(ya)器(qi)降至零位(wei)時(shi)拉(la)閘。

5）當電壓升至試(shi)驗(yan)電壓時(shi)，開始(shi)計(ji)時(shi)，到1min后，迅速降壓到1/3試(shi)驗(yan)電壓以下(xia)時(shi)，才能拉開電源。

6）在升壓(ya)或(huo)耐壓(ya)試驗過程(cheng)中，如(ru)發(fa)現下列不正(zheng)常情況時，應(ying)立即降壓(ya)，切斷(duan)電源。停止試驗并查(cha)明原(yuan)因：①電壓(ya)表(biao)指(zhi)針(zhen)擺(bai)動很大(da)；②發(fa)現絕緣(yuan)燒(shao)焦或(huo)冒(mao)煙；③被試品內有不正(zheng)常的聲音。

7）耐壓(ya)試驗前(qian)后應測量絕(jue)緣電阻(zu)，檢(jian)查絕(jue)緣情(qing)況。

試(shi)驗(yan)變壓(ya)器在做(zuo)被試(shi)品的直流耐(nai)壓(ya)或泄露(lu)試(shi)驗(yan)時接線原理圖如圖6。

注：此試驗應先抽出短路桿“D”，圖6中所(suo)示。

圖(tu)中：VD—高壓硅(gui)堆 R1—限流電阻 C1—高壓濾波電容 FRC—阻容分壓器   CX—被試品 μA—帶保護微(wei)安表

泄露試(shi)驗(yan)中限(xian)流(liu)(liu)(liu)電(dian)阻(zu)R1選擇在額定(ding)輸出電(dian)壓時(shi)(shi)，輸出端(duan)短路電(dian)流(liu)(liu)(liu)不超過高壓硅堆(dui)(dui)的(de)*大(da)整流(liu)(liu)(liu)。如電(dian)壓硅堆(dui)(dui)的(de)*大(da)整流(liu)(liu)(liu)電(dian)流(liu)(liu)(liu)為100mA時(shi)(shi)用于60kV的(de)試(shi)驗(yan)裝置中，限(xian)流(liu)(liu)(liu)電(dian)阻(zu)按R1=60/0.1=600kΩ選擇。限(xian)流(liu)(liu)(liu)電(dian)阻(zu)還(huan)應具有(you)足(zu)夠的(de)容(rong)量和沿面放(fang)電(dian)距(ju)離。

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

泄露試驗的操作及注(zhu)意事項

1）試驗(yan)前(qian)應先(xian)檢查被試品是否停電(dian)，接地放電(dian)，一切對外連(lian)線(xian)是否擦干凈(jing)。要嚴防將試驗(yan)電(dian)壓加到有人工作的部位上去。

2）接(jie)好(hao)試(shi)驗裝置(zhi)的接(jie)線后，應(ying)復查(cha)無誤后才可加壓。應(ying)特別注(zhu)意檢(jian)查(cha)高壓設備及引線與(yu)地、與(yu)操作(zuo)人員的**距離，被試(shi)品的外(wai)殼是否可靠(kao)接(jie)地，要按**規程(cheng)中所規定的內容進(jin)行(xing)試(shi)驗。

3）對于大電(dian)容量設(she)備應緩慢升壓(ya)(ya)，防止被試品的充電(dian)電(dian)流燒(shao)壞微安表(biao)(biao)。必(bi)要時應分級加壓(ya)(ya)，分別(bie)讀取各級電(dian)壓(ya)(ya)下微安表(biao)(biao)的穩(wen)定讀數。

4）試(shi)驗(yan)過程(cheng)中，應(ying)密切(qie)(qie)監(jian)視被試(shi)品、試(shi)驗(yan)裝置、微安表，一旦發生(sheng)擊(ji)穿、閃爍等異常現象應(ying)立即(ji)降壓，切(qie)(qie)斷電源，并(bing)查(cha)明原因，詳細記錄。

5）試驗(yan)完(wan)畢，降壓，切斷電(dian)(dian)源(yuan)后(hou)應將被試品及試驗(yan)裝置本身充分放電(dian)(dian)。

四、WBYD-100KVA/100KV交流耐壓變壓器注意事項

1、按照您所進行的(de)(de)試驗接(jie)好(hao)工作(zuo)線(xian)路。試驗變壓器的(de)(de)外殼以及操(cao)作(zuo)系統的(de)(de)外殼必須可靠(kao)接(jie)地(di)。試驗變壓器高壓繞(rao)組的(de)(de)X端(高壓尾)以及測量繞(rao)組的(de)(de)F端必須可靠(kao)接(jie)地(di)。

2、做串(chuan)級(ji)(ji)試驗(yan)(yan)時，**級(ji)(ji)、第三級(ji)(ji)試驗(yan)(yan)變(bian)壓(ya)(ya)器的低壓(ya)(ya)繞組的X端(duan)，測量繞組的F端(duan)以(yi)及高(gao)壓(ya)(ya)繞組的X端(duan)(高(gao)壓(ya)(ya)尾)均接本級(ji)(ji)試驗(yan)(yan)變(bian)壓(ya)(ya)器的外殼。**級(ji)(ji)、第三級(ji)(ji)試驗(yan)(yan)變(bian)壓(ya)(ya)器的外殼必須通過絕緣(yuan)支(zhi)架接地。

3、接通電源前，操作(zuo)系統的調壓器(qi)必須調到(dao)零位后方可接通電源，合(he)閘，開始升(sheng)壓。

4、從零開(kai)始均勻(yun)旋轉調壓器手輪升(sheng)(sheng)壓。升(sheng)(sheng)壓方法(fa)有：快速升(sheng)(sheng)壓法(fa)，即20s逐級(ji)升(sheng)(sheng)壓法(fa)；慢速升(sheng)(sheng)壓法(fa)，即60s逐級(ji)升(sheng)(sheng)壓法(fa)；極慢速升(sheng)(sheng)壓法(fa)供選用。電(dian)(dian)壓從零開(kai)始按一定的(de)(de)(de)升(sheng)(sheng)壓方式(shi)和速度上升(sheng)(sheng)到您所需的(de)(de)(de)額定試(shi)(shi)驗(yan)電(dian)(dian)壓的(de)(de)(de)75%后，在以每秒(miao)2%額定試(shi)(shi)驗(yan)電(dian)(dian)壓的(de)(de)(de)速度升(sheng)(sheng)到您所需的(de)(de)(de)額定電(dian)(dian)壓，并密(mi)切(qie)注意(yi)測量儀表的(de)(de)(de)指示(shi)以及(ji)被(bei)試(shi)(shi)品的(de)(de)(de)情況。升(sheng)(sheng)壓過程(cheng)中或試(shi)(shi)驗(yan)過程(cheng)中如發現測量儀表的(de)(de)(de)指示(shi)及(ji)被(bei)試(shi)(shi)品情況異常，應立即降(jiang)壓，切(qie)斷電(dian)(dian)源(yuan)，查明情況。

5、試驗完畢后(hou)，應(ying)在數(shu)秒內(nei)勻速的將(jiang)調壓(ya)器返回至(zhi)零(ling)位，然后(hou)切斷電源。

6、本產(chan)品不(bu)(bu)得超(chao)過額定參(can)數使用。除試驗必須(xu)外，決不(bu)(bu)允許全電(dian)壓通電(dian)或斷電(dian)。

7、再升壓(ya)或耐(nai)壓(ya)試(shi)驗過程中，如發現以下不正常(chang)情況時，應(ying)立即(ji)降壓(ya)，切斷電源，停止試(shi)驗并(bing)查明原因(yin)。

⑴電壓表指針(zhen)擺動(或數字跳動)很大

⑵電流(liu)表直線上升

被試品(pin)內有(you)不正常的(de)聲音

8、圖(tu)1中第9項系壓(ya)力(li)閥及壓(ya)力(li)表(biao)，為長(chang)期(qi)關(guan)閉狀態。每6個月開(kai)閥一(yi)次，以(yi)檢查(cha)SF6壓(ya)力(li)，應不小于0.2MPa(檢查(cha)壓(ya)力(li)后立即關(guan)閉閥門)，低于0.2MPa時應加SF6氣體，以(yi)增加氣絕緣(yuan)。

9、耐壓實驗前(qian)后應測量被試設(she)備的(de)絕緣電阻(zu)，檢(jian)查絕緣情況。

10、當試驗變壓(ya)器長期不使用時(shi)，應放(fang)置于通風、干(gan)燥、無(wu)陽光直射的地方。

11、該(gai)產品(pin)不允許(xu)在高于45℃的溫度下(xia)長期存放、使用(yong)、放氣。

12、運(yun)輸搬運(yun)途中不得重力(li)沖(chong)擊(ji)。

13、產品緊固件及壓力閥、壓力表不得擅自松動。

14、使用本(ben)產品做高壓(ya)(ya)試(shi)驗時，出熟悉本(ben)說明書外，還必須嚴格執行國家有關(guan)標準(zhun)和操(cao)作規(gui)程(cheng)。可參(can)照GB311-83《高壓(ya)(ya)輸變(bian)設備的絕(jue)緣配合，高壓(ya)(ya)試(shi)驗技(ji)術》；《電氣設備預防(fang)性試(shi)驗規(gui)程(cheng)》等。

五、WBYD-100KVA/100KV交流耐壓變壓器容量選擇

標(biao)稱(cheng)試(shi)驗變壓(ya)器容量Pn的確定公(gong)式：Pn=kVn 2ωCt×10-9

式中：

Pn——標稱(cheng)試驗變壓器容量(kVA)

Vn——試驗(yan)變壓(ya)器(qi)的(de)額(e)定輸出(chu)高(gao)壓(ya)的(de)有效值(kV)

k ——**系(xi)數。k≥1，標(biao)(biao)稱電(dian)壓Vn≥1MV時，k=2；標(biao)(biao)稱電(dian)壓較低(di)時，k值可取(qu)高一些。

Ct——被(bei)試品的電容量(pF)

ω——角頻率(lv)，ω=2πf， f——試驗(yan)電源的頻率(lv)

被試設備的電容量(liang)Ct可由(you)交流電橋測出。Ct的變化很(hen)大，

可(ke)由設備(bei)的類型而定。

典型數據如下：

簡單(dan)的棒式或懸式絕緣子   幾(ji)十微(wei)法