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產品名稱: 交直流耐壓發生(sheng)器

產品型號: WBTQSB-5KVA/100KV

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WBTQSB-5KVA/100KV交直流耐壓發生器具有體積小、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。交直流耐壓發生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、WBTQSB-5KVA/100KV交直流耐壓發生器概述(shu)

YDQ系(xi)(xi)列高壓(ya)(ya)試(shi)驗變(bian)壓(ya)(ya)器是(shi)(shi)(shi)根據《試(shi)驗變(bian)壓(ya)(ya)器》標準(zhun)(zhun)，在(zai)油(you)浸式試(shi)驗變(bian)壓(ya)(ya)器的(de)(de)基(ji)礎上而設計生產的(de)(de)。SF6氣體具有(you)良好的(de)(de)電(dian)(dian)氣絕緣(yuan)(yuan)性能及優異的(de)(de)滅弧性能，其耐壓(ya)(ya)強度(du)(du)為同一(yi)壓(ya)(ya)力下(xia)氮氣的(de)(de)2.5倍(bei)，擊穿(chuan)電(dian)(dian)壓(ya)(ya)的(de)(de)空(kong)氣的(de)(de)2.5倍(bei)。在(zai)0.25MPa下(xia)與油(you)的(de)(de)擊穿(chuan)電(dian)(dian)壓(ya)(ya)相等，在(zai)0.45MPa壓(ya)(ya)力下(xia)是(shi)(shi)(shi)油(you)的(de)(de)擊穿(chuan)電(dian)(dian)壓(ya)(ya)的(de)(de)2倍(bei)，是(shi)(shi)(shi)一(yi)種優于油(you)的(de)(de)新一(yi)代超高壓(ya)(ya)絕緣(yuan)(yuan)介(jie)質材(cai)料。該產品(pin)(pin)技術(shu)要求完(wan)全符合《ZBK-41006-89》標準(zhun)(zhun)，它是(shi)(shi)(shi)油(you)浸式輕(qing)型試(shi)驗變(bian)壓(ya)(ya)器的(de)(de)換(huan)代產品(pin)(pin)。該產品(pin)(pin)具有(you)體積小(xiao)、重量輕(qing)、不受(shou)氣候變(bian)化影響、電(dian)(dian)暈小(xiao)、現場(chang)搬運無需(xu)靜(jing)止可使用，使用壽(shou)命長、免維(wei)修等特點。適用于電(dian)(dian)力系(xi)(xi)統、工礦(kuang)企業、科(ke)研部門等對各種高壓(ya)(ya)電(dian)(dian)氣設備、電(dian)(dian)氣元件、絕緣(yuan)(yuan)材(cai)料進行工頻或(huo)直流(liu)高壓(ya)(ya)下(xia)的(de)(de)絕緣(yuan)(yuan)強度(du)(du)試(shi)驗。

二、WBTQSB-5KVA/100KV交直流耐壓發生器產品結構

YDQ系列高壓(ya)(ya)試驗變壓(ya)(ya)器采用單框芯(xin)式(shi)鐵(tie)芯(xin)結(jie)構，初級(ji)繞(rao)組繞(rao)在鐵(tie)芯(xin)上，高壓(ya)(ya)繞(rao)組在外，這種同軸布置減少(shao)了漏(lou)磁通，因而增大(da)了繞(rao)組間的耦合。產(chan)品的外殼為圓柱灌式(shi)容(rong)器結(jie)構，能耐(nai)受0.8MPa以(yi)上壓(ya)(ya)力。其結(jie)構見圖1：

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

三、WBTQSB-5KVA/100KV交直流耐壓發生器工作原理

YDQ系列高壓(ya)(ya)試驗(yan)(yan)(yan)變壓(ya)(ya)器(qi)(qi)為單相變壓(ya)(ya)器(qi)(qi)，聯結(jie)組標號Ⅰ.Ⅰ. 用(yong)(yong)工頻220V(10kVA以(yi)上為380V)電(dian)源接(jie)入 (為本公司生產(chan)的試驗(yan)(yan)(yan)變壓(ya)(ya)器(qi)(qi)配套(tao)專用(yong)(yong)設備，詳細資料請見其(qi)具體使用(yong)(yong)說明(ming)書)系列操(cao)(cao)作(zuo)(zuo)箱(xiang)(臺)，經操(cao)(cao)作(zuo)(zuo)箱(xiang)內自(zi)偶調壓(ya)(ya)器(qi)(qi)(50kVA以(yi)上調壓(ya)(ya)器(qi)(qi)外附(fu))調節至0～200V(或0～400V)電(dian)壓(ya)(ya)輸出至YDQ試驗(yan)(yan)(yan)變壓(ya)(ya)器(qi)(qi)的初(chu)級(ji)繞組，根據電(dian)磁感應原理，在試驗(yan)(yan)(yan)變壓(ya)(ya)器(qi)(qi)高壓(ya)(ya)繞組可獲得試驗(yan)(yan)(yan)所需(xu)的高電(dian)壓(ya)(ya)。

單臺YDQ系列高壓試(shi)驗變壓器的工(gong)作原理圖(tu)見(jian)圖(tu)2。

單臺YDQ系列交直流(liu)高(gao)(gao)(gao)壓試驗(yan)變壓器的工作(zuo)原理圖見圖3，圖中(zhong)高(gao)(gao)(gao)壓套管(guan)中(zhong)裝有高(gao)(gao)(gao)壓硅堆，串接(jie)在高(gao)(gao)(gao)壓回路中(zhong)作(zuo)半波整流(liu)，以獲得直流(liu)高(gao)(gao)(gao)電壓。當用(yong)一短(duan)路桿將高(gao)(gao)(gao)壓硅堆短(duan)接(jie)時(shi)，可獲得工頻高(gao)(gao)(gao)電壓，作(zuo)為(wei)交流(liu)輸出狀(zhuang)態；取消短(duan)路桿時(shi)，作(zuo)為(wei)直流(liu)輸出狀(zhuang)態。

試驗變壓器高壓套管中的高壓硅堆未(wei)畫出(chu)，其(qi)原理與上圖相(xiang)同。

三臺試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)串(chuan)級(ji)(ji)(ji)(ji)(ji)(ji)獲得(de)更(geng)高電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)接線原理(li)見圖4。串(chuan)級(ji)(ji)(ji)(ji)(ji)(ji)高壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)有很大的(de)(de)優越性，因(yin)為(wei)(wei)整個試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)裝置(zhi)(zhi)由(you)幾(ji)臺單(dan)(dan)(dan)臺試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)組成(cheng)(cheng)，單(dan)(dan)(dan)臺試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)容(rong)量小、電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)低、重(zhong)量輕，便于(yu)運輸(shu)和(he)(he)安裝。它既然可串(chuan)接成(cheng)(cheng)高出(chu)幾(ji)倍(bei)的(de)(de)單(dan)(dan)(dan)臺試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)輸(shu)出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)組合使(shi)用，又可分(fen)開(kai)成(cheng)(cheng)幾(ji)套(tao)(tao)單(dan)(dan)(dan)臺試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)單(dan)(dan)(dan)獨使(shi)用。整套(tao)(tao)裝置(zhi)(zhi)投(tou)資小，經濟實惠。圖5中，在(zai)(zai)**級(ji)(ji)(ji)(ji)(ji)(ji)和(he)(he)**級(ji)(ji)(ji)(ji)(ji)(ji)的(de)(de)每個單(dan)(dan)(dan)元試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)中都有一(yi)個勵磁(ci)繞組A1、C1和(he)(he)A2、C2。在(zai)(zai)三臺串(chuan)級(ji)(ji)(ji)(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)基本(ben)原理(li)中，低壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)電(dian)(dian)(dian)源加在(zai)(zai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ的(de)(de)初(chu)級(ji)(ji)(ji)(ji)(ji)(ji)繞組a1x1上，單(dan)(dan)(dan)臺試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ、Ⅱ、Ⅲ的(de)(de)輸(shu)出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)都是V。勵磁(ci)繞組A1、C1給**級(ji)(ji)(ji)(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ的(de)(de)初(chu)級(ji)(ji)(ji)(ji)(ji)(ji)繞組供(gong)電(dian)(dian)(dian)；**級(ji)(ji)(ji)(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ的(de)(de)勵磁(ci)繞組A2、C2給第三級(ji)(ji)(ji)(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅲ的(de)(de)初(chu)級(ji)(ji)(ji)(ji)(ji)(ji)繞組供(gong)電(dian)(dian)(dian)。**級(ji)(ji)(ji)(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ和(he)(he)第三級(ji)(ji)(ji)(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅲ的(de)(de)箱(xiang)體(ti)分(fen)別處在(zai)(zai)對(dui)地(di)(di)為(wei)(wei)1V和(he)(he)2V的(de)(de)高電(dian)(dian)(dian)位上，所(suo)以箱(xiang)體(ti)對(dui)地(di)(di)是絕(jue)緣的(de)(de)，試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ的(de)(de)箱(xiang)體(ti)是接地(di)(di)的(de)(de)。這樣**級(ji)(ji)(ji)(ji)(ji)(ji)、**級(ji)(ji)(ji)(ji)(ji)(ji)、第三級(ji)(ji)(ji)(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)對(dui)地(di)(di)的(de)(de)額定(ding)輸(shu)出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)分(fen)別為(wei)(wei)1V、2V、3V；其額定(ding)容(rong)量分(fen)別為(wei)(wei)3P、2P、1P。

YDQ系列高壓(ya)試(shi)驗(yan)變壓(ya)器(qi)做(zuo)被試(shi)品的(de)工頻耐壓(ya)試(shi)驗(yan)使用接線原理(li)圖(tu)見圖(tu)5。

圖中：R1—限流電阻(zu) FRC—阻(zu)容(rong)分壓器 RF—球間(jian)隙保(bao)護電阻(zu) G—球間(jian)隙 CX—被(bei)試品

注：高壓(ya)尾必須可靠接地(di)

工頻耐壓(ya)(ya)試(shi)驗中限(xian)流電(dian)(dian)阻(zu)(zu)R1應根據試(shi)驗變(bian)壓(ya)(ya)器的額定容(rong)量來選擇。如高壓(ya)(ya)側(ce)額定輸(shu)出電(dian)(dian)流在100～300mA時，可取(qu)0.5～1Ω/V(試(shi)驗電(dian)(dian)壓(ya)(ya))；高壓(ya)(ya)側(ce)額定輸(shu)出電(dian)(dian)流為1A以(yi)上時，可取(qu)1Ω/V(試(shi)驗電(dian)(dian)壓(ya)(ya))。常用水電(dian)(dian)阻(zu)(zu)作(zuo)為限(xian)流電(dian)(dian)阻(zu)(zu)，管子長度(du)可按(an)150kV/m考慮，管子粗(cu)細應具有足夠的熱容(rong)量(水阻(zu)(zu)液配(pei)(pei)制(zhi)方法(fa)：用蒸餾水加入(ru)適量硫酸銅配(pei)(pei)制(zhi)成(cheng)各種不同的阻(zu)(zu)值)。

球間(jian)隙(xi)及保護電(dian)阻：當電(dian)壓(ya)超過球間(jian)隙(xi)整定值時(shi)(一般(ban)取(qu)試驗電(dian)壓(ya)的110%~120%)，球間(jian)隙(xi)放(fang)電(dian)，對(dui)被試品起到保護作用。球間(jian)隙(xi)保護電(dian)阻可按1Ω/V(試驗電(dian)壓(ya))選取(qu)。

在工(gong)頻耐壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)(yan)中(zhong)，低電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側測(ce)量(liang)(liang)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(儀表電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya))不是(shi)非常(chang)準(zhun)確的(de)，其原因(yin)是(shi)由于(yu)(yu)試(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)存(cun)在著漏抗，在這(zhe)個漏抗上(shang)(shang)必然存(cun)在著壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)降或(huo)容(rong)升，使試(shi)品(pin)上(shang)(shang)的(de)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)低于(yu)(yu)或(huo)高(gao)于(yu)(yu)低壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側測(ce)量(liang)(liang)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)表上(shang)(shang)反映出(chu)來(lai)的(de)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)。工(gong)頻耐壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)(yan)時，被試(shi)品(pin)上(shang)(shang)的(de)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)高(gao)于(yu)(yu)試(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)輸出(chu)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)，也就是(shi)所(suo)謂(wei)容(rong)升現象。感(gan)應(ying)耐壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)驗(yan)(yan)(yan)時，試(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)漏抗必然存(cun)在著壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)降。為了(le)準(zhun)確測(ce)量(liang)(liang)被試(shi)品(pin)上(shang)(shang)所(suo)施加的(de)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)，因(yin)此常(chang)在高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)側接入FRC阻(zu)容(rong)分(fen)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)來(lai)測(ce)量(liang)(liang)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(見圖5)。

工頻耐壓試(shi)驗操作注意(yi)事項(xiang)

1）試驗人員應做好(hao)分工，明確相(xiang)互間聯系方法(fa)。并有專門人監護現場**及觀察試品狀態。

2）被試(shi)品應先清(qing)掃干(gan)凈，并**干(gan)燥(zao)，以免損壞被試(shi)品和試(shi)驗帶來的誤差。

3）對于大型試(shi)驗(yan)(yan)，一(yi)般都應先進行(xing)空升試(shi)驗(yan)(yan)。即不接(jie)試(shi)品時升壓(ya)至試(shi)驗(yan)(yan)電壓(ya)，校對各種表計，調整球間隙。

4）升壓速度不(bu)能(neng)太快，并必須防止突(tu)然(ran)加壓。例如調壓器不(bu)在(zai)零位時突(tu)然(ran)合閘。也(ye)不(bu)能(neng)突(tu)然(ran)切(qie)斷電(dian)源，一般應在(zai)調壓器降至零位時拉閘。

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

6）在升壓或耐壓試驗過(guo)程中，如(ru)發(fa)(fa)現(xian)下列不正常情況時，應立即降壓，切斷(duan)電(dian)源(yuan)。停止試驗并查(cha)明原因：①電(dian)壓表指針擺動(dong)很(hen)大(da)；②發(fa)(fa)現(xian)絕緣燒(shao)焦或冒(mao)煙；③被試品內有不正常的聲音。

7）耐壓試驗前后應測量絕(jue)緣(yuan)電阻，檢查絕(jue)緣(yuan)情況。

試(shi)驗(yan)變壓器在做被試(shi)品的直流(liu)耐壓或泄露試(shi)驗(yan)時接線原理圖如圖6。

注(zhu)：此試驗應先(xian)抽出短路(lu)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(shi)品 μA—帶保(bao)護微(wei)安表

泄(xie)露(lu)試(shi)驗(yan)中限流(liu)(liu)電(dian)(dian)(dian)阻(zu)R1選(xuan)擇在額定輸(shu)出(chu)電(dian)(dian)(dian)壓時(shi)，輸(shu)出(chu)端短路電(dian)(dian)(dian)流(liu)(liu)不超過(guo)高壓硅堆的*大(da)(da)整(zheng)流(liu)(liu)。如電(dian)(dian)(dian)壓硅堆的*大(da)(da)整(zheng)流(liu)(liu)電(dian)(dian)(dian)流(liu)(liu)為100mA時(shi)用于60kV的試(shi)驗(yan)裝置(zhi)中，限流(liu)(liu)電(dian)(dian)(dian)阻(zu)按R1=60/0.1=600kΩ選(xuan)擇。限流(liu)(liu)電(dian)(dian)(dian)阻(zu)還(huan)應(ying)具(ju)有足(zu)夠的容(rong)量和沿面放電(dian)(dian)(dian)距(ju)離。

高(gao)壓濾波電容C1一般選(xuan)擇在0.01~0.1μF，當被試品的電容量很大(da)時，C1可省略(lve)不用。

泄露試驗的操作及注意(yi)事項(xiang)

1）試驗前應(ying)先檢查(cha)被試品(pin)是否停電(dian)，接(jie)地放(fang)電(dian)，一切對(dui)外連線是否擦干(gan)凈。要嚴防將試驗電(dian)壓加到有人工作(zuo)的部位上(shang)去。

2）接(jie)好試驗裝置的接(jie)線(xian)后，應復查無誤(wu)后才可(ke)加壓。應特別(bie)注意檢查高壓設(she)備及(ji)引線(xian)與地、與操作人員的**距(ju)離，被試品(pin)的外殼(ke)是否可(ke)靠(kao)接(jie)地，要按**規(gui)程中所規(gui)定的內容進行試驗。

3）對于大電容量(liang)設(she)備應(ying)緩慢(man)升壓(ya)(ya)，防止被試品的(de)充電電流燒壞微(wei)(wei)安(an)表。必要時應(ying)分(fen)級加壓(ya)(ya)，分(fen)別(bie)讀(du)取各級電壓(ya)(ya)下(xia)微(wei)(wei)安(an)表的(de)穩定(ding)讀(du)數。

4）試(shi)(shi)驗過(guo)程中，應(ying)密切監(jian)視被試(shi)(shi)品、試(shi)(shi)驗裝置、微(wei)安(an)表(biao)，一旦(dan)發生(sheng)擊穿、閃(shan)爍等(deng)異(yi)常現象應(ying)立即降壓(ya)，切斷電源，并查明原因，詳細記錄。

5）試(shi)驗完畢(bi)，降(jiang)壓，切斷(duan)電源后應將被試(shi)品及試(shi)驗裝置本身充分放電。

四、WBTQSB-5KVA/100KV交直流耐壓發生器注意事項

1、按(an)照您(nin)所進行(xing)的試驗接好(hao)工作線路。試驗變壓器(qi)(qi)的外(wai)(wai)殼以及操作系統的外(wai)(wai)殼必(bi)須可(ke)靠(kao)接地。試驗變壓器(qi)(qi)高壓繞(rao)組(zu)的X端(高壓尾(wei))以及測量繞(rao)組(zu)的F端必(bi)須可(ke)靠(kao)接地。

2、做(zuo)串(chuan)級(ji)(ji)試(shi)驗(yan)時，**級(ji)(ji)、第(di)三級(ji)(ji)試(shi)驗(yan)變壓(ya)(ya)器的低壓(ya)(ya)繞(rao)組的X端(duan)，測(ce)量繞(rao)組的F端(duan)以及(ji)高壓(ya)(ya)繞(rao)組的X端(duan)(高壓(ya)(ya)尾)均接(jie)(jie)本(ben)級(ji)(ji)試(shi)驗(yan)變壓(ya)(ya)器的外殼(ke)。**級(ji)(ji)、第(di)三級(ji)(ji)試(shi)驗(yan)變壓(ya)(ya)器的外殼(ke)必須通過(guo)絕緣(yuan)支架(jia)接(jie)(jie)地。

3、接通電(dian)源(yuan)前，操作系(xi)統的調壓器必須(xu)調到零位后方可接通電(dian)源(yuan)，合閘，開始升(sheng)壓。

4、從零開始均勻旋轉調壓(ya)(ya)(ya)(ya)器手輪升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)。升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)方法(fa)有：快速升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)，即(ji)20s逐(zhu)級升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)；慢(man)(man)速升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)，即(ji)60s逐(zhu)級升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)；極慢(man)(man)速升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)法(fa)供選(xuan)用。電壓(ya)(ya)(ya)(ya)從零開始按(an)一定(ding)的(de)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)方式和(he)速度上升(sheng)(sheng)(sheng)到您所(suo)需(xu)的(de)額定(ding)試驗(yan)電壓(ya)(ya)(ya)(ya)的(de)75%后，在以每秒(miao)2%額定(ding)試驗(yan)電壓(ya)(ya)(ya)(ya)的(de)速度升(sheng)(sheng)(sheng)到您所(suo)需(xu)的(de)額定(ding)電壓(ya)(ya)(ya)(ya)，并密切(qie)注意測(ce)量儀(yi)(yi)表(biao)的(de)指(zhi)示以及(ji)被(bei)(bei)試品的(de)情況。升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)過程(cheng)中(zhong)或試驗(yan)過程(cheng)中(zhong)如發現測(ce)量儀(yi)(yi)表(biao)的(de)指(zhi)示及(ji)被(bei)(bei)試品情況異常，應立即(ji)降壓(ya)(ya)(ya)(ya)，切(qie)斷電源，查明情況。

5、試驗完(wan)畢后(hou)，應在數秒內勻速(su)的將調壓器返回至零位(wei)，然后(hou)切斷電源。

6、本(ben)產品不得超(chao)過(guo)額定參數使用。除試驗必須外，決不允許全電壓通(tong)電或斷電。

7、再升壓(ya)或耐壓(ya)試驗過程中，如發現(xian)以下不(bu)正常情(qing)況時，應(ying)立即(ji)降壓(ya)，切斷電源，停(ting)止(zhi)試驗并查明原因。

⑴電壓表指針擺動(或(huo)數字跳動)很大

⑵電流表直線(xian)上升

被(bei)試品內有不正(zheng)常的聲(sheng)音

8、圖1中第9項(xiang)系壓(ya)(ya)力閥及壓(ya)(ya)力表，為長(chang)期(qi)關閉狀態。每(mei)6個月開閥一次，以(yi)檢(jian)查SF6壓(ya)(ya)力，應不小于(yu)0.2MPa(檢(jian)查壓(ya)(ya)力后立即(ji)關閉閥門)，低(di)于(yu)0.2MPa時應加(jia)SF6氣(qi)體，以(yi)增(zeng)加(jia)氣(qi)絕緣。

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

10、當(dang)試驗(yan)變壓(ya)器(qi)長期不(bu)使用(yong)時，應放置(zhi)于通風、干燥、無陽光(guang)直射的(de)地方。

11、該產品不允許在高(gao)于45℃的(de)溫度(du)下(xia)長期存放(fang)、使用、放(fang)氣(qi)。

12、運輸搬(ban)運途中(zhong)不得重力沖(chong)擊。

13、產品緊(jin)固件及(ji)壓力閥(fa)、壓力表不得擅自松(song)動。

14、使用(yong)本產品做高壓試(shi)(shi)驗時，出(chu)熟悉本說明書外，還必須嚴格(ge)執行國家有關標準(zhun)和(he)操作規程。可參照GB311-83《高壓輸變設備(bei)的絕緣配合，高壓試(shi)(shi)驗技術》；《電氣設備(bei)預防(fang)性試(shi)(shi)驗規程》等。

五、WBTQSB-5KVA/100KV交直流耐壓發生器容量選擇

標(biao)稱(cheng)試驗(yan)變壓器容(rong)量Pn的(de)確定公式：Pn=kVn 2ωCt×10-9

式中：

Pn——標稱試(shi)驗(yan)變壓器容(rong)量(kVA)

Vn——試(shi)驗變壓器的額定輸(shu)出(chu)高壓的有效值(kV)

k ——**系數。k≥1，標稱(cheng)電壓(ya)Vn≥1MV時，k=2；標稱(cheng)電壓(ya)較低時，k值可取(qu)高一些。

Ct——被試(shi)品的電(dian)容量(pF)

ω——角頻率，ω=2πf， f——試驗電(dian)源的頻率

被試設備的電容量(liang)Ct可(ke)由交(jiao)流電橋測出。Ct的變化很大，

可由設備(bei)的類型而(er)定(ding)。

典型(xing)數據如下：

簡(jian)單的(de)棒式或懸式絕緣子   幾十微(wei)法(fa)