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產品名稱: 高壓試驗(yan)變(bian)壓器

產品型號: WBYD-30KVA/150KV

產品展商: 其它(ta)品牌

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產品簡介

WBYD-30KVA/150KV高壓試驗變壓器具有體積小、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。高壓試驗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-30KVA/150KV高壓試驗變壓器概述(shu)

YDQ系列高(gao)壓(ya)(ya)(ya)試(shi)驗(yan)變(bian)壓(ya)(ya)(ya)器是(shi)(shi)根(gen)據《試(shi)驗(yan)變(bian)壓(ya)(ya)(ya)器》標準，在(zai)油浸式試(shi)驗(yan)變(bian)壓(ya)(ya)(ya)器的(de)(de)(de)基礎上而設(she)計生產的(de)(de)(de)。SF6氣體具有(you)良好的(de)(de)(de)電(dian)氣絕緣(yuan)性能及(ji)優(you)異的(de)(de)(de)滅弧性能，其(qi)耐壓(ya)(ya)(ya)強(qiang)(qiang)度為同一(yi)壓(ya)(ya)(ya)力(li)下氮(dan)氣的(de)(de)(de)2.5倍，擊穿(chuan)(chuan)電(dian)壓(ya)(ya)(ya)的(de)(de)(de)空(kong)氣的(de)(de)(de)2.5倍。在(zai)0.25MPa下與(yu)油的(de)(de)(de)擊穿(chuan)(chuan)電(dian)壓(ya)(ya)(ya)相等(deng)，在(zai)0.45MPa壓(ya)(ya)(ya)力(li)下是(shi)(shi)油的(de)(de)(de)擊穿(chuan)(chuan)電(dian)壓(ya)(ya)(ya)的(de)(de)(de)2倍，是(shi)(shi)一(yi)種優(you)于(yu)油的(de)(de)(de)新一(yi)代超高(gao)壓(ya)(ya)(ya)絕緣(yuan)介質材(cai)料。該產品技術要求完全符合(he)《ZBK-41006-89》標準，它是(shi)(shi)油浸式輕型試(shi)驗(yan)變(bian)壓(ya)(ya)(ya)器的(de)(de)(de)換(huan)代產品。該產品具有(you)體積小(xiao)、重量輕、不受(shou)氣候變(bian)化影響、電(dian)暈小(xiao)、現場搬運無需靜止可使用，使用壽命長、免維修等(deng)特點。適用于(yu)電(dian)力(li)系統、工(gong)礦企(qi)業、科(ke)研部(bu)門等(deng)對各(ge)種高(gao)壓(ya)(ya)(ya)電(dian)氣設(she)備(bei)、電(dian)氣元(yuan)件、絕緣(yuan)材(cai)料進(jin)行工(gong)頻(pin)或(huo)直流(liu)高(gao)壓(ya)(ya)(ya)下的(de)(de)(de)絕緣(yuan)強(qiang)(qiang)度試(shi)驗(yan)。

二、WBYD-30KVA/150KV高壓試驗變壓器產品結構

YDQ系列高(gao)壓(ya)試(shi)驗(yan)變壓(ya)器采用單(dan)框芯(xin)式鐵(tie)芯(xin)結構(gou)，初級(ji)繞組繞在鐵(tie)芯(xin)上(shang)，高(gao)壓(ya)繞組在外(wai)(wai)，這種(zhong)同軸布置減(jian)少了漏磁(ci)通(tong)，因而增大(da)了繞組間的(de)耦合。產(chan)品(pin)的(de)外(wai)(wai)殼為圓(yuan)柱灌式容(rong)器結構(gou)，能(neng)耐受0.8MPa以上(shang)壓(ya)力。其結構(gou)見圖1：

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

三、WBYD-30KVA/150KV高壓試驗變壓器工作原理

YDQ系(xi)列高壓(ya)(ya)(ya)(ya)試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)為(wei)單相變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)，聯結組(zu)標號Ⅰ.Ⅰ. 用工頻(pin)220V(10kVA以(yi)上為(wei)380V)電(dian)源接入 (為(wei)本公司生(sheng)產的(de)(de)試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)配套專(zhuan)用設備，詳(xiang)細資料請見(jian)其(qi)具體(ti)使用說明書(shu))系(xi)列操(cao)作箱(臺)，經操(cao)作箱內自偶調壓(ya)(ya)(ya)(ya)器(qi)(qi)(50kVA以(yi)上調壓(ya)(ya)(ya)(ya)器(qi)(qi)外附)調節至(zhi)0～200V(或(huo)0～400V)電(dian)壓(ya)(ya)(ya)(ya)輸(shu)出至(zhi)YDQ試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)初級繞組(zu)，根據電(dian)磁感(gan)應原理(li)，在(zai)試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)高壓(ya)(ya)(ya)(ya)繞組(zu)可獲(huo)得試驗所需的(de)(de)高電(dian)壓(ya)(ya)(ya)(ya)。

單(dan)臺(tai)YDQ系列高壓(ya)(ya)試驗(yan)變(bian)壓(ya)(ya)器的(de)工(gong)作(zuo)原(yuan)理圖見圖2。

單(dan)臺YDQ系列交直流(liu)高(gao)壓試驗變壓器(qi)的工(gong)作(zuo)(zuo)原(yuan)理圖(tu)見(jian)圖(tu)3，圖(tu)中高(gao)壓套管(guan)中裝(zhuang)有高(gao)壓硅堆(dui)，串接在高(gao)壓回路中作(zuo)(zuo)半波整流(liu)，以獲得(de)直流(liu)高(gao)電壓。當用一短路桿將高(gao)壓硅堆(dui)短接時，可獲得(de)工(gong)頻高(gao)電壓，作(zuo)(zuo)為交流(liu)輸出狀(zhuang)態(tai)；取消短路桿時，作(zuo)(zuo)為直流(liu)輸出狀(zhuang)態(tai)。

試驗變壓器高(gao)壓套管(guan)中的高(gao)壓硅(gui)堆未畫出，其原理與上(shang)圖相同。

三臺(tai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)串(chuan)(chuan)級(ji)(ji)獲得更(geng)高(gao)(gao)電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)接線原(yuan)理見(jian)圖4。串(chuan)(chuan)級(ji)(ji)高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)有(you)很大的(de)(de)(de)優越(yue)性，因為(wei)整個試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)裝置(zhi)由幾臺(tai)單(dan)(dan)(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)組(zu)(zu)成(cheng)，單(dan)(dan)(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)容(rong)量(liang)小、電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)低(di)、重量(liang)輕(qing)，便(bian)于運輸(shu)(shu)和(he)(he)安裝。它(ta)既然可串(chuan)(chuan)接成(cheng)高(gao)(gao)出幾倍(bei)的(de)(de)(de)單(dan)(dan)(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)輸(shu)(shu)出電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)組(zu)(zu)合使(shi)用，又(you)可分(fen)開成(cheng)幾套(tao)(tao)單(dan)(dan)(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)單(dan)(dan)(dan)(dan)獨使(shi)用。整套(tao)(tao)裝置(zhi)投資小，經濟實惠。圖5中(zhong)(zhong)，在(zai)**級(ji)(ji)和(he)(he)**級(ji)(ji)的(de)(de)(de)每個單(dan)(dan)(dan)(dan)元試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)中(zhong)(zhong)都有(you)一個勵(li)磁繞(rao)組(zu)(zu)A1、C1和(he)(he)A2、C2。在(zai)三臺(tai)串(chuan)(chuan)級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)基本原(yuan)理中(zhong)(zhong)，低(di)壓(ya)(ya)(ya)(ya)(ya)(ya)電(dian)(dian)源(yuan)加在(zai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ的(de)(de)(de)初級(ji)(ji)繞(rao)組(zu)(zu)a1x1上，單(dan)(dan)(dan)(dan)臺(tai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ、Ⅱ、Ⅲ的(de)(de)(de)輸(shu)(shu)出電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)都是(shi)V。勵(li)磁繞(rao)組(zu)(zu)A1、C1給**級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ的(de)(de)(de)初級(ji)(ji)繞(rao)組(zu)(zu)供(gong)電(dian)(dian)；**級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ的(de)(de)(de)勵(li)磁繞(rao)組(zu)(zu)A2、C2給第三級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅲ的(de)(de)(de)初級(ji)(ji)繞(rao)組(zu)(zu)供(gong)電(dian)(dian)。**級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ和(he)(he)第三級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅲ的(de)(de)(de)箱(xiang)體分(fen)別(bie)處(chu)在(zai)對地(di)(di)為(wei)1V和(he)(he)2V的(de)(de)(de)高(gao)(gao)電(dian)(dian)位上，所以箱(xiang)體對地(di)(di)是(shi)絕緣的(de)(de)(de)，試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ的(de)(de)(de)箱(xiang)體是(shi)接地(di)(di)的(de)(de)(de)。這樣**級(ji)(ji)、**級(ji)(ji)、第三級(ji)(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)對地(di)(di)的(de)(de)(de)額定(ding)輸(shu)(shu)出電(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)分(fen)別(bie)為(wei)1V、2V、3V；其(qi)額定(ding)容(rong)量(liang)分(fen)別(bie)為(wei)3P、2P、1P。

YDQ系列高(gao)壓(ya)試(shi)驗變壓(ya)器做(zuo)被試(shi)品的工(gong)頻耐壓(ya)試(shi)驗使用接線原理圖(tu)見圖(tu)5。

圖中：R1—限(xian)流電(dian)阻(zu) FRC—阻(zu)容分壓器 RF—球間隙保護(hu)電(dian)阻(zu)  G—球間隙 CX—被(bei)試品

注：高壓尾必須可靠接地

工(gong)頻耐壓(ya)試(shi)驗(yan)中限流(liu)電(dian)阻R1應(ying)(ying)根據試(shi)驗(yan)變(bian)壓(ya)器的額(e)定(ding)(ding)容量(liang)來選(xuan)擇。如高(gao)壓(ya)側(ce)額(e)定(ding)(ding)輸出(chu)電(dian)流(liu)在100～300mA時，可取0.5～1Ω/V(試(shi)驗(yan)電(dian)壓(ya))；高(gao)壓(ya)側(ce)額(e)定(ding)(ding)輸出(chu)電(dian)流(liu)為1A以上(shang)時，可取1Ω/V(試(shi)驗(yan)電(dian)壓(ya))。常用水電(dian)阻作為限流(liu)電(dian)阻，管(guan)子長度可按150kV/m考慮(lv)，管(guan)子粗細應(ying)(ying)具有足夠的熱容量(liang)(水阻液配制(zhi)方法：用蒸(zheng)餾(liu)水加(jia)入(ru)適(shi)量(liang)硫酸銅配制(zhi)成各(ge)種(zhong)不同的阻值)。

球(qiu)(qiu)間(jian)隙(xi)及保(bao)護(hu)電(dian)(dian)(dian)阻：當電(dian)(dian)(dian)壓超過(guo)球(qiu)(qiu)間(jian)隙(xi)整(zheng)定值時(shi)(一般(ban)取試驗(yan)電(dian)(dian)(dian)壓的110%~120%)，球(qiu)(qiu)間(jian)隙(xi)放電(dian)(dian)(dian)，對被(bei)試品(pin)起到保(bao)護(hu)作用。球(qiu)(qiu)間(jian)隙(xi)保(bao)護(hu)電(dian)(dian)(dian)阻可(ke)按1Ω/V(試驗(yan)電(dian)(dian)(dian)壓)選(xuan)取。

在(zai)工(gong)(gong)頻(pin)耐壓(ya)(ya)試(shi)驗(yan)(yan)中，低電(dian)(dian)(dian)壓(ya)(ya)側(ce)測量電(dian)(dian)(dian)壓(ya)(ya)(儀(yi)表電(dian)(dian)(dian)壓(ya)(ya))不是非常(chang)(chang)準(zhun)確的，其原因(yin)是由于(yu)(yu)試(shi)驗(yan)(yan)變壓(ya)(ya)器存(cun)在(zai)著(zhu)漏(lou)(lou)抗，在(zai)這個漏(lou)(lou)抗上必(bi)然存(cun)在(zai)著(zhu)壓(ya)(ya)降或容升，使(shi)試(shi)品(pin)上的電(dian)(dian)(dian)壓(ya)(ya)低于(yu)(yu)或高(gao)于(yu)(yu)低壓(ya)(ya)側(ce)測量電(dian)(dian)(dian)壓(ya)(ya)表上反映(ying)出來(lai)的電(dian)(dian)(dian)壓(ya)(ya)。工(gong)(gong)頻(pin)耐壓(ya)(ya)試(shi)驗(yan)(yan)時(shi)，被試(shi)品(pin)上的電(dian)(dian)(dian)壓(ya)(ya)高(gao)于(yu)(yu)試(shi)驗(yan)(yan)變壓(ya)(ya)器的輸出電(dian)(dian)(dian)壓(ya)(ya)，也(ye)就是所謂容升現象。感應耐壓(ya)(ya)試(shi)驗(yan)(yan)時(shi)，試(shi)驗(yan)(yan)變壓(ya)(ya)器的漏(lou)(lou)抗必(bi)然存(cun)在(zai)著(zhu)壓(ya)(ya)降。為了(le)準(zhun)確測量被試(shi)品(pin)上所施加的電(dian)(dian)(dian)壓(ya)(ya)，因(yin)此常(chang)(chang)在(zai)高(gao)壓(ya)(ya)側(ce)接入(ru)FRC阻容分壓(ya)(ya)器來(lai)測量電(dian)(dian)(dian)壓(ya)(ya)(見(jian)圖5)。

工頻耐壓試(shi)驗操作注意事項(xiang)

1）試驗人員應(ying)做好(hao)分工，明確相互間聯系方法。并有(you)專門人監護現場**及(ji)觀察試品狀態。

2）被(bei)試(shi)品應先(xian)清掃干(gan)凈，并**干(gan)燥，以免損壞被(bei)試(shi)品和試(shi)驗(yan)帶來的誤差(cha)。

3）對(dui)于大型試(shi)(shi)驗(yan)(yan)，一般都(dou)應先進行空升試(shi)(shi)驗(yan)(yan)。即(ji)不接試(shi)(shi)品時升壓(ya)至試(shi)(shi)驗(yan)(yan)電壓(ya)，校對(dui)各種表計，調整(zheng)球間(jian)隙。

4）升(sheng)壓(ya)(ya)速度不能太(tai)快(kuai)，并(bing)必須防(fang)止突然(ran)加壓(ya)(ya)。例如(ru)調壓(ya)(ya)器(qi)不在零(ling)位時(shi)(shi)突然(ran)合閘。也不能突然(ran)切斷電源，一般應(ying)在調壓(ya)(ya)器(qi)降至零(ling)位時(shi)(shi)拉(la)閘。

5）當電壓升(sheng)至試(shi)驗電壓時(shi)，開始(shi)計時(shi)，到1min后(hou)，迅速降壓到1/3試(shi)驗電壓以下時(shi)，才(cai)能拉開電源。

6）在(zai)升壓(ya)或耐壓(ya)試驗過程中，如發(fa)現(xian)下列不正常情況(kuang)時，應立(li)即降壓(ya)，切斷電(dian)(dian)源。停止試驗并查明原因：①電(dian)(dian)壓(ya)表指針擺動(dong)很大；②發(fa)現(xian)絕緣燒焦或冒(mao)煙；③被試品內有不正常的聲(sheng)音。

7）耐(nai)壓試驗前后應測(ce)量(liang)絕(jue)緣(yuan)電阻，檢查絕(jue)緣(yuan)情況(kuang)。

試(shi)驗變壓(ya)器在(zai)做被試(shi)品的(de)直流耐壓(ya)或泄(xie)露(lu)試(shi)驗時接線原理圖如(ru)圖6。

注：此試驗應(ying)先(xian)抽出短路(lu)桿(gan)“D”，圖(tu)6中所示。

圖中(zhong)：VD—高(gao)壓硅堆(dui) R1—限流電(dian)阻 C1—高(gao)壓濾波電(dian)容 FRC—阻容分壓器 CX—被試(shi)品(pin) μA—帶保護(hu)微安表(biao)

泄露(lu)試(shi)驗中限流電(dian)(dian)(dian)(dian)阻(zu)(zu)R1選擇在額定輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓時，輸(shu)出(chu)端短路電(dian)(dian)(dian)(dian)流不(bu)超過高壓硅堆(dui)的*大整流。如電(dian)(dian)(dian)(dian)壓硅堆(dui)的*大整流電(dian)(dian)(dian)(dian)流為100mA時用(yong)于60kV的試(shi)驗裝置(zhi)中，限流電(dian)(dian)(dian)(dian)阻(zu)(zu)按R1=60/0.1=600kΩ選擇。限流電(dian)(dian)(dian)(dian)阻(zu)(zu)還應具有足夠(gou)的容(rong)量和(he)沿面放電(dian)(dian)(dian)(dian)距離。

高壓濾(lv)波電容C1一般選擇在0.01~0.1μF，當被試品的(de)電容量很大時(shi)，C1可省略不用。

泄(xie)露試驗的操作及注意(yi)事項

1）試驗前應先檢查被試品(pin)是否(fou)停電，接地放電，一切(qie)對外連線(xian)是否(fou)擦干凈。要嚴防(fang)將(jiang)試驗電壓加到有人(ren)工(gong)作的(de)部位上去。

2）接(jie)好試驗(yan)裝置的(de)接(jie)線后，應復(fu)查無誤后才(cai)可加壓(ya)。應特別注意(yi)檢查高壓(ya)設備及引線與地、與操(cao)作人員的(de)**距(ju)離，被(bei)試品的(de)外殼是否可靠接(jie)地，要按**規程中所規定的(de)內容進行試驗(yan)。

3）對于(yu)大(da)電(dian)容(rong)量設備應緩(huan)慢升壓(ya)，防止被試品的(de)充(chong)電(dian)電(dian)流(liu)燒(shao)壞微(wei)安表(biao)。必要時應分級加壓(ya)，分別讀(du)取各(ge)級電(dian)壓(ya)下微(wei)安表(biao)的(de)穩定讀(du)數。

4）試(shi)(shi)驗過程中，應(ying)密切監視被試(shi)(shi)品(pin)、試(shi)(shi)驗裝置、微安表，一旦發生擊穿、閃(shan)爍等異常(chang)現象應(ying)立即(ji)降壓，切斷電(dian)源(yuan)，并查明原因，詳細(xi)記錄。

5）試(shi)驗完(wan)畢，降壓，切斷電源后應(ying)將被試(shi)品及試(shi)驗裝置(zhi)本身充分(fen)放電。

四、WBYD-30KVA/150KV高壓試驗變壓器注意事項

1、按照您所(suo)進行的(de)試驗(yan)接(jie)好工作線(xian)路(lu)。試驗(yan)變壓器的(de)外(wai)殼以(yi)及(ji)操(cao)作系統的(de)外(wai)殼必須可靠接(jie)地。試驗(yan)變壓器高壓繞組的(de)X端(高壓尾)以(yi)及(ji)測量繞組的(de)F端必須可靠接(jie)地。

2、做(zuo)串級(ji)試驗(yan)(yan)時，**級(ji)、第三(san)(san)級(ji)試驗(yan)(yan)變(bian)壓(ya)器(qi)的(de)(de)(de)低壓(ya)繞(rao)(rao)組的(de)(de)(de)X端(duan)，測量繞(rao)(rao)組的(de)(de)(de)F端(duan)以(yi)及(ji)高(gao)壓(ya)繞(rao)(rao)組的(de)(de)(de)X端(duan)(高(gao)壓(ya)尾(wei))均接本(ben)級(ji)試驗(yan)(yan)變(bian)壓(ya)器(qi)的(de)(de)(de)外殼。**級(ji)、第三(san)(san)級(ji)試驗(yan)(yan)變(bian)壓(ya)器(qi)的(de)(de)(de)外殼必須通過絕緣支架接地。

3、接(jie)通(tong)電源(yuan)前，操作系統的調壓(ya)器必須調到零位后方可接(jie)通(tong)電源(yuan)，合閘，開始(shi)升(sheng)壓(ya)。

4、從零開始(shi)均勻(yun)旋轉調(diao)壓(ya)(ya)(ya)(ya)器手輪升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)。升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)方(fang)法(fa)有：快速(su)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)，即20s逐級(ji)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)；慢速(su)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)，即60s逐級(ji)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)；極慢速(su)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)供選用。電(dian)(dian)壓(ya)(ya)(ya)(ya)從零開始(shi)按一定(ding)(ding)的(de)(de)升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)方(fang)式和速(su)度上升(sheng)(sheng)(sheng)(sheng)到(dao)您(nin)所需(xu)的(de)(de)額(e)定(ding)(ding)試(shi)驗(yan)電(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)75%后，在以每秒2%額(e)定(ding)(ding)試(shi)驗(yan)電(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)速(su)度升(sheng)(sheng)(sheng)(sheng)到(dao)您(nin)所需(xu)的(de)(de)額(e)定(ding)(ding)電(dian)(dian)壓(ya)(ya)(ya)(ya)，并密切注意測量儀表的(de)(de)指示以及被(bei)(bei)試(shi)品的(de)(de)情(qing)況(kuang)。升(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)過(guo)程中或(huo)試(shi)驗(yan)過(guo)程中如發現測量儀表的(de)(de)指示及被(bei)(bei)試(shi)品情(qing)況(kuang)異常，應立(li)即降壓(ya)(ya)(ya)(ya)，切斷電(dian)(dian)源(yuan)，查明情(qing)況(kuang)。

5、試驗(yan)完(wan)畢后，應在數秒內勻速的將調壓器返回至零位，然后切斷電(dian)源。

6、本產品(pin)不(bu)得超過(guo)額定參數(shu)使用。除試驗必須(xu)外，決不(bu)允許(xu)全電(dian)壓(ya)通電(dian)或斷電(dian)。

7、再升壓(ya)或耐壓(ya)試(shi)驗過程中，如(ru)發現以下不正常情況時，應立即降壓(ya)，切斷電源，停止試(shi)驗并(bing)查明原因。

⑴電壓(ya)表指針擺動(dong)(或數字跳動(dong))很大

⑵電流表直(zhi)線上升

被試(shi)品內有不正常的聲音

8、圖1中第9項系壓力(li)閥(fa)(fa)及(ji)壓力(li)表，為(wei)長(chang)期(qi)關閉(bi)狀態。每(mei)6個月開閥(fa)(fa)一次，以檢查(cha)SF6壓力(li)，應(ying)不小于0.2MPa(檢查(cha)壓力(li)后立即關閉(bi)閥(fa)(fa)門)，低(di)于0.2MPa時(shi)應(ying)加SF6氣(qi)(qi)體，以增加氣(qi)(qi)絕緣(yuan)。

9、耐(nai)壓實(shi)驗(yan)前后應測量被試(shi)設備(bei)的(de)絕緣(yuan)(yuan)電阻，檢查(cha)絕緣(yuan)(yuan)情(qing)況。

10、當試驗(yan)變壓器長期不使用時，應放置于(yu)通風(feng)、干燥、無陽光直射的地方。

11、該產品不允許在高于(yu)45℃的溫(wen)度下長(chang)期存放、使用、放氣。

12、運輸(shu)搬運途(tu)中不得重力沖擊。

13、產品緊固件及(ji)壓力閥、壓力表(biao)不(bu)得擅自(zi)松(song)動。

14、使用本產(chan)品做高壓試(shi)(shi)驗(yan)(yan)時，出熟(shu)悉本說明書外，還必須嚴格(ge)執行國家有關標(biao)準(zhun)和操作規程。可參(can)照GB311-83《高壓輸變(bian)設(she)備的(de)絕緣配合，高壓試(shi)(shi)驗(yan)(yan)技術》；《電氣(qi)設(she)備預(yu)防性試(shi)(shi)驗(yan)(yan)規程》等。

五、WBYD-30KVA/150KV高壓試驗變壓器容量選擇

標稱試驗變壓器容量(liang)Pn的(de)確定公式：Pn=kVn 2ωCt×10-9

式中(zhong)：

Pn——標稱試驗(yan)變(bian)壓器容量(kVA)

Vn——試驗變壓器的額(e)定輸(shu)出高壓的有效值(kV)

k ——**系(xi)數。k≥1，標稱(cheng)電壓Vn≥1MV時，k=2；標稱(cheng)電壓較低時，k值可取高一些(xie)。

Ct——被試(shi)品的電容量(pF)

ω——角頻(pin)(pin)率(lv)(lv)，ω=2πf， f——試驗電源(yuan)的頻(pin)(pin)率(lv)(lv)

被試設(she)備的電容量Ct可由(you)交流電橋測出(chu)。Ct的變(bian)化很大，

可由設備的(de)類型(xing)而(er)定。

典型(xing)數據如下：

簡單(dan)的棒式或(huo)懸式絕緣子 ; 幾十微法