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產品名稱: 試驗變(bian)壓(ya)器

產品型號: WBYD-100KVA/100KV

產品展商: 其(qi)它(ta)品牌

產品文檔: 無相關(guan)文檔(dang)

產品簡介

WBYD-100KVA/100KV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。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(yi)、WBYD-100KVA/100KV試驗變壓器概述

YDQ系(xi)列(lie)高(gao)壓(ya)(ya)(ya)(ya)(ya)試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)是(shi)根據《試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)》標(biao)準(zhun)，在油(you)浸式試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)的(de)基礎上而設(she)計生產的(de)。SF6氣(qi)(qi)體具(ju)有(you)良好(hao)的(de)電(dian)氣(qi)(qi)絕(jue)(jue)緣性能及優異的(de)滅弧性能，其耐壓(ya)(ya)(ya)(ya)(ya)強度(du)(du)為同(tong)一(yi)(yi)壓(ya)(ya)(ya)(ya)(ya)力下(xia)氮氣(qi)(qi)的(de)2.5倍(bei)(bei)，擊(ji)穿(chuan)電(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)空氣(qi)(qi)的(de)2.5倍(bei)(bei)。在0.25MPa下(xia)與油(you)的(de)擊(ji)穿(chuan)電(dian)壓(ya)(ya)(ya)(ya)(ya)相等(deng)，在0.45MPa壓(ya)(ya)(ya)(ya)(ya)力下(xia)是(shi)油(you)的(de)擊(ji)穿(chuan)電(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)2倍(bei)(bei)，是(shi)一(yi)(yi)種優于(yu)油(you)的(de)新一(yi)(yi)代(dai)超高(gao)壓(ya)(ya)(ya)(ya)(ya)絕(jue)(jue)緣介質材料(liao)。該(gai)產品技術要求(qiu)完全符合《ZBK-41006-89》標(biao)準(zhun)，它是(shi)油(you)浸式輕(qing)(qing)型試驗變(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)的(de)換代(dai)產品。該(gai)產品具(ju)有(you)體積小、重(zhong)量輕(qing)(qing)、不受(shou)氣(qi)(qi)候變(bian)(bian)化影響、電(dian)暈小、現場搬運(yun)無需靜(jing)止可使(shi)用，使(shi)用壽命(ming)長(chang)、免維修(xiu)等(deng)特點。適用于(yu)電(dian)力系(xi)統(tong)、工礦企業、科(ke)研部門等(deng)對各種高(gao)壓(ya)(ya)(ya)(ya)(ya)電(dian)氣(qi)(qi)設(she)備、電(dian)氣(qi)(qi)元件(jian)、絕(jue)(jue)緣材料(liao)進行(xing)工頻或直流高(gao)壓(ya)(ya)(ya)(ya)(ya)下(xia)的(de)絕(jue)(jue)緣強度(du)(du)試驗。

二、WBYD-100KVA/100KV試驗變壓器產品結構

YDQ系列高壓(ya)試驗變壓(ya)器(qi)采(cai)用(yong)單框芯式鐵(tie)芯結(jie)構，初級(ji)繞(rao)(rao)組繞(rao)(rao)在鐵(tie)芯上，高壓(ya)繞(rao)(rao)組在外，這種同軸布置減少了(le)漏磁通，因而增大了(le)繞(rao)(rao)組間的(de)耦合(he)。產品的(de)外殼為圓(yuan)柱灌(guan)式容器(qi)結(jie)構，能耐受(shou)0.8MPa以上壓(ya)力。其結(jie)構見圖1：

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

三、WBYD-100KVA/100KV試驗變壓器工作原理

YDQ系列(lie)高(gao)壓(ya)(ya)試(shi)驗變(bian)(bian)壓(ya)(ya)器(qi)(qi)為單相(xiang)變(bian)(bian)壓(ya)(ya)器(qi)(qi)，聯結組標號Ⅰ.Ⅰ. 用(yong)(yong)工頻220V(10kVA以上為380V)電(dian)源接入 (為本公司(si)生產(chan)的試(shi)驗變(bian)(bian)壓(ya)(ya)器(qi)(qi)配套專用(yong)(yong)設備，詳(xiang)細資(zi)料請見(jian)其具體(ti)使用(yong)(yong)說明書)系列(lie)操作箱(臺)，經操作箱內(nei)自(zi)偶調壓(ya)(ya)器(qi)(qi)(50kVA以上調壓(ya)(ya)器(qi)(qi)外附)調節至0～200V(或(huo)0～400V)電(dian)壓(ya)(ya)輸出至YDQ試(shi)驗變(bian)(bian)壓(ya)(ya)器(qi)(qi)的初級繞(rao)組，根(gen)據電(dian)磁感應原(yuan)理，在試(shi)驗變(bian)(bian)壓(ya)(ya)器(qi)(qi)高(gao)壓(ya)(ya)繞(rao)組可獲(huo)得試(shi)驗所(suo)需的高(gao)電(dian)壓(ya)(ya)。

單臺YDQ系列高壓試(shi)驗變(bian)壓器(qi)的工作(zuo)原理圖(tu)(tu)見圖(tu)(tu)2。

單臺YDQ系列交直(zhi)流(liu)高壓(ya)(ya)(ya)試驗(yan)變壓(ya)(ya)(ya)器的(de)工作(zuo)原理(li)圖(tu)見(jian)圖(tu)3，圖(tu)中(zhong)高壓(ya)(ya)(ya)套(tao)管(guan)中(zhong)裝有(you)高壓(ya)(ya)(ya)硅堆(dui)，串接(jie)在高壓(ya)(ya)(ya)回路(lu)中(zhong)作(zuo)半波整流(liu)，以獲得直(zhi)流(liu)高電(dian)壓(ya)(ya)(ya)。當用一短(duan)路(lu)桿將高壓(ya)(ya)(ya)硅堆(dui)短(duan)接(jie)時(shi)，可獲得工頻高電(dian)壓(ya)(ya)(ya)，作(zuo)為交流(liu)輸(shu)(shu)出狀(zhuang)(zhuang)態；取(qu)消短(duan)路(lu)桿時(shi)，作(zuo)為直(zhi)流(liu)輸(shu)(shu)出狀(zhuang)(zhuang)態。

試驗(yan)變壓(ya)(ya)器高(gao)壓(ya)(ya)套(tao)管中(zhong)的(de)高(gao)壓(ya)(ya)硅堆未畫出，其原(yuan)理與上圖相同(tong)。

三(san)臺(tai)(tai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)串級(ji)獲得更(geng)高電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)接線原理(li)(li)見圖(tu)4。串級(ji)高壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)有很大(da)的(de)(de)(de)優越性，因為整個試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)裝置由幾(ji)臺(tai)(tai)單臺(tai)(tai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)組成，單臺(tai)(tai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)容(rong)量小(xiao)、電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)低、重量輕(qing)，便于運輸和(he)安裝。它既然可串接成高出(chu)(chu)(chu)幾(ji)倍的(de)(de)(de)單臺(tai)(tai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)輸出(chu)(chu)(chu)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)組合使用(yong)，又可分開(kai)成幾(ji)套(tao)單臺(tai)(tai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)單獨使用(yong)。整套(tao)裝置投資小(xiao)，經(jing)濟實(shi)惠。圖(tu)5中(zhong)(zhong)，在(zai)**級(ji)和(he)**級(ji)的(de)(de)(de)每個單元試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)中(zhong)(zhong)都有一個勵(li)磁繞(rao)組A1、C1和(he)A2、C2。在(zai)三(san)臺(tai)(tai)串級(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)基本(ben)原理(li)(li)中(zhong)(zhong)，低壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)電源加(jia)在(zai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ的(de)(de)(de)初級(ji)繞(rao)組a1x1上(shang)，單臺(tai)(tai)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ、Ⅱ、Ⅲ的(de)(de)(de)輸出(chu)(chu)(chu)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)都是V。勵(li)磁繞(rao)組A1、C1給**級(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ的(de)(de)(de)初級(ji)繞(rao)組供電；**級(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ的(de)(de)(de)勵(li)磁繞(rao)組A2、C2給第(di)三(san)級(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅲ的(de)(de)(de)初級(ji)繞(rao)組供電。**級(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅱ和(he)第(di)三(san)級(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅲ的(de)(de)(de)箱體分別處在(zai)對(dui)地(di)為1V和(he)2V的(de)(de)(de)高電位上(shang)，所以(yi)箱體對(dui)地(di)是絕緣的(de)(de)(de)，試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)Ⅰ的(de)(de)(de)箱體是接地(di)的(de)(de)(de)。這(zhe)樣**級(ji)、**級(ji)、第(di)三(san)級(ji)試(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)變(bian)(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)對(dui)地(di)的(de)(de)(de)額(e)定(ding)輸出(chu)(chu)(chu)電壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)(ya)分別為1V、2V、3V；其額(e)定(ding)容(rong)量分別為3P、2P、1P。

YDQ系列高壓試驗變壓器做被試品的(de)工(gong)頻耐壓試驗使用接線原理圖見(jian)圖5。

圖中：R1—限流電(dian)阻(zu)  FRC—阻(zu)容(rong)分壓器 RF—球(qiu)間(jian)(jian)隙(xi)保護電(dian)阻(zu) G—球(qiu)間(jian)(jian)隙(xi) CX—被(bei)試品

注：高(gao)壓尾必須可靠(kao)接地

工頻耐壓試(shi)驗(yan)(yan)中限(xian)流(liu)(liu)電(dian)阻(zu)(zu)R1應根據(ju)試(shi)驗(yan)(yan)變壓器的額定(ding)容量(liang)來(lai)選擇(ze)。如高(gao)壓側額定(ding)輸出(chu)電(dian)流(liu)(liu)在100～300mA時(shi)，可取0.5～1Ω/V(試(shi)驗(yan)(yan)電(dian)壓)；高(gao)壓側額定(ding)輸出(chu)電(dian)流(liu)(liu)為1A以上時(shi)，可取1Ω/V(試(shi)驗(yan)(yan)電(dian)壓)。常用水電(dian)阻(zu)(zu)作為限(xian)流(liu)(liu)電(dian)阻(zu)(zu)，管子長(chang)度可按150kV/m考慮(lv)，管子粗細應具(ju)有足(zu)夠的熱容量(liang)(水阻(zu)(zu)液配制方法：用蒸餾水加入適量(liang)硫酸銅(tong)配制成各種不同(tong)的阻(zu)(zu)值)。

球(qiu)間(jian)(jian)隙(xi)及保護電(dian)阻：當電(dian)壓(ya)超(chao)過(guo)球(qiu)間(jian)(jian)隙(xi)整定值時(一般取試驗電(dian)壓(ya)的110%~120%)，球(qiu)間(jian)(jian)隙(xi)放電(dian)，對被試品起到保護作用。球(qiu)間(jian)(jian)隙(xi)保護電(dian)阻可按1Ω/V(試驗電(dian)壓(ya))選取。

在工頻(pin)耐壓(ya)(ya)試(shi)驗(yan)(yan)中(zhong)，低電(dian)壓(ya)(ya)側測(ce)量電(dian)壓(ya)(ya)(儀(yi)表(biao)電(dian)壓(ya)(ya))不是非常準確(que)的(de)(de)，其原因(yin)是由于試(shi)驗(yan)(yan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)存(cun)(cun)在著(zhu)漏抗(kang)(kang)，在這個漏抗(kang)(kang)上(shang)(shang)必然存(cun)(cun)在著(zhu)壓(ya)(ya)降或容升，使試(shi)品上(shang)(shang)的(de)(de)電(dian)壓(ya)(ya)低于或高(gao)于低壓(ya)(ya)側測(ce)量電(dian)壓(ya)(ya)表(biao)上(shang)(shang)反(fan)映出(chu)來的(de)(de)電(dian)壓(ya)(ya)。工頻(pin)耐壓(ya)(ya)試(shi)驗(yan)(yan)時，被(bei)試(shi)品上(shang)(shang)的(de)(de)電(dian)壓(ya)(ya)高(gao)于試(shi)驗(yan)(yan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)的(de)(de)輸出(chu)電(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，試(shi)驗(yan)(yan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)的(de)(de)漏抗(kang)(kang)必然存(cun)(cun)在著(zhu)壓(ya)(ya)降。為了準確(que)測(ce)量被(bei)試(shi)品上(shang)(shang)所施(shi)加的(de)(de)電(dian)壓(ya)(ya)，因(yin)此常在高(gao)壓(ya)(ya)側接入FRC阻容分(fen)壓(ya)(ya)器(qi)(qi)來測(ce)量電(dian)壓(ya)(ya)(見圖(tu)5)。

工頻耐壓試驗操作注意(yi)事項

1）試(shi)驗人員應做好分工，明確相互間聯系(xi)方法。并有專門人監護現(xian)場**及觀(guan)察試(shi)品狀態。

2）被(bei)試品應先(xian)清掃干凈(jing)，并**干燥，以免損壞被(bei)試品和試驗帶(dai)來的誤差(cha)。

3）對(dui)于大型試(shi)驗(yan)，一般都(dou)應先進行空升試(shi)驗(yan)。即不接(jie)試(shi)品時升壓(ya)(ya)至試(shi)驗(yan)電壓(ya)(ya)，校(xiao)對(dui)各種表計，調(diao)整球間隙。

4）升壓速度不能太快，并必須防止突然加(jia)壓。例如調壓器(qi)不在零(ling)位時突然合閘(zha)。也不能突然切斷電源，一(yi)般應在調壓器(qi)降至零(ling)位時拉閘(zha)。

5）當電壓升至試(shi)驗(yan)電壓時(shi)，開始計時(shi)，到(dao)1min后，迅速降壓到(dao)1/3試(shi)驗(yan)電壓以下時(shi)，才能拉(la)開電源。

6）在升壓(ya)或耐(nai)壓(ya)試(shi)驗(yan)過程(cheng)中，如發現(xian)下列不正常情(qing)況(kuang)時，應立即降壓(ya)，切斷電源(yuan)。停止試(shi)驗(yan)并查(cha)明原因：①電壓(ya)表(biao)指(zhi)針擺動很大(da)；②發現(xian)絕緣燒焦(jiao)或冒煙；③被試(shi)品內有不正常的聲音。

7）耐壓(ya)試驗(yan)前后(hou)應測量(liang)絕(jue)緣電阻，檢(jian)查(cha)絕(jue)緣情況。

試驗(yan)變壓器在做(zuo)被試品的直流(liu)耐壓或泄(xie)露(lu)試驗(yan)時接線原理(li)圖如圖6。

注：此試驗應先抽出短(duan)路桿(gan)“D”，圖6中所示。

圖中(zhong)：VD—高壓硅堆(dui) R1—限流電(dian)阻(zu) C1—高壓濾(lv)波電(dian)容 FRC—阻(zu)容分壓器 CX—被試(shi)品 μA—帶(dai)保護(hu)微安表

泄露試驗(yan)(yan)中限流(liu)(liu)電(dian)(dian)阻R1選(xuan)擇(ze)(ze)在額定輸(shu)出電(dian)(dian)壓(ya)時(shi)，輸(shu)出端短路電(dian)(dian)流(liu)(liu)不(bu)超過高壓(ya)硅堆的*大(da)整流(liu)(liu)。如電(dian)(dian)壓(ya)硅堆的*大(da)整流(liu)(liu)電(dian)(dian)流(liu)(liu)為100mA時(shi)用于60kV的試驗(yan)(yan)裝置(zhi)中，限流(liu)(liu)電(dian)(dian)阻按R1=60/0.1=600kΩ選(xuan)擇(ze)(ze)。限流(liu)(liu)電(dian)(dian)阻還應具(ju)有(you)足夠(gou)的容(rong)量和沿(yan)面放電(dian)(dian)距(ju)離。

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

泄露(lu)試驗的操作及注(zhu)意事項

1）試驗前應先檢查被試品是(shi)否停(ting)電(dian)，接地(di)放(fang)電(dian)，一切對(dui)外連線(xian)是(shi)否擦(ca)干凈。要嚴防將試驗電(dian)壓(ya)加到有人工作的部位上去(qu)。

2）接(jie)好試(shi)驗裝(zhuang)置的(de)接(jie)線(xian)后(hou)，應(ying)復查無誤后(hou)才可(ke)加(jia)壓。應(ying)特別(bie)注意檢查高壓設備及引線(xian)與(yu)地(di)、與(yu)操作人員的(de)**距離，被試(shi)品的(de)外殼是否可(ke)靠接(jie)地(di)，要按**規程中(zhong)所(suo)規定的(de)內容進行試(shi)驗。

3）對于(yu)大(da)電(dian)(dian)容量(liang)設備應緩(huan)慢升(sheng)壓，防(fang)止被試品的充電(dian)(dian)電(dian)(dian)流燒壞微安(an)表。必要時應分(fen)級加壓，分(fen)別讀取各級電(dian)(dian)壓下微安(an)表的穩定(ding)讀數。

4）試驗過程中，應密切監視被(bei)試品、試驗裝置、微安(an)表，一旦發生擊(ji)穿、閃爍等(deng)異(yi)常現象應立即降壓，切斷電(dian)源，并查明原因，詳細記錄。

5）試驗(yan)完畢，降壓(ya)，切斷電源后應將被試品(pin)及(ji)試驗(yan)裝(zhuang)置(zhi)本身充分放電。

四、WBYD-100KVA/100KV試驗變壓器注意事項

1、按照您(nin)所(suo)進行的(de)試驗(yan)(yan)接(jie)好工作(zuo)(zuo)線路。試驗(yan)(yan)變(bian)(bian)壓(ya)器(qi)的(de)外殼以及(ji)操作(zuo)(zuo)系(xi)統的(de)外殼必須可(ke)靠(kao)(kao)接(jie)地。試驗(yan)(yan)變(bian)(bian)壓(ya)器(qi)高壓(ya)繞組(zu)的(de)X端(高壓(ya)尾(wei))以及(ji)測量繞組(zu)的(de)F端必須可(ke)靠(kao)(kao)接(jie)地。

2、做串級試(shi)(shi)驗(yan)時，**級、第三級試(shi)(shi)驗(yan)變壓(ya)(ya)(ya)器(qi)(qi)的(de)低壓(ya)(ya)(ya)繞組的(de)X端，測(ce)量(liang)繞組的(de)F端以及高壓(ya)(ya)(ya)繞組的(de)X端(高壓(ya)(ya)(ya)尾)均接本(ben)級試(shi)(shi)驗(yan)變壓(ya)(ya)(ya)器(qi)(qi)的(de)外殼。**級、第三級試(shi)(shi)驗(yan)變壓(ya)(ya)(ya)器(qi)(qi)的(de)外殼必須通過絕緣支架(jia)接地。

3、接(jie)通電源(yuan)前，操作系統的調(diao)壓器必須調(diao)到零位后方可接(jie)通電源(yuan)，合閘，開(kai)始升壓。

4、從零開(kai)始均勻(yun)旋轉調壓(ya)(ya)(ya)器手輪升(sheng)(sheng)壓(ya)(ya)(ya)。升(sheng)(sheng)壓(ya)(ya)(ya)方法(fa)有：快速升(sheng)(sheng)壓(ya)(ya)(ya)法(fa)，即(ji)20s逐級(ji)升(sheng)(sheng)壓(ya)(ya)(ya)法(fa)；慢速升(sheng)(sheng)壓(ya)(ya)(ya)法(fa)，即(ji)60s逐級(ji)升(sheng)(sheng)壓(ya)(ya)(ya)法(fa)；極(ji)慢速升(sheng)(sheng)壓(ya)(ya)(ya)法(fa)供選用。電(dian)(dian)壓(ya)(ya)(ya)從零開(kai)始按一定(ding)(ding)(ding)的(de)升(sheng)(sheng)壓(ya)(ya)(ya)方式和速度上(shang)升(sheng)(sheng)到您(nin)所需的(de)額(e)定(ding)(ding)(ding)試驗電(dian)(dian)壓(ya)(ya)(ya)的(de)75%后，在以(yi)(yi)每秒(miao)2%額(e)定(ding)(ding)(ding)試驗電(dian)(dian)壓(ya)(ya)(ya)的(de)速度升(sheng)(sheng)到您(nin)所需的(de)額(e)定(ding)(ding)(ding)電(dian)(dian)壓(ya)(ya)(ya)，并密切(qie)注意(yi)測量儀表(biao)的(de)指示以(yi)(yi)及被試品的(de)情(qing)況。升(sheng)(sheng)壓(ya)(ya)(ya)過(guo)(guo)程中或試驗過(guo)(guo)程中如發現測量儀表(biao)的(de)指示及被試品情(qing)況異常(chang)，應立即(ji)降壓(ya)(ya)(ya)，切(qie)斷電(dian)(dian)源，查(cha)明情(qing)況。

5、試驗(yan)完畢后，應(ying)在數(shu)秒內勻(yun)速的將調壓器返回至(zhi)零位，然后切斷電源。

6、本產品不得(de)超過額定(ding)參數使用(yong)。除試驗必(bi)須(xu)外，決不允(yun)許全電(dian)壓(ya)通電(dian)或(huo)斷電(dian)。

7、再升(sheng)壓(ya)或耐壓(ya)試驗過程中，如發現以(yi)下不正常情況時，應立(li)即(ji)降壓(ya)，切斷電(dian)源，停止(zhi)試驗并查(cha)明原因。

⑴電壓表指針擺動(dong)(dong)(或數字跳(tiao)動(dong)(dong))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)力(li)閥及壓(ya)力(li)表(biao)，為長期(qi)關閉狀態。每6個月開閥一次，以檢查(cha)SF6壓(ya)力(li)，應(ying)不(bu)小于0.2MPa(檢查(cha)壓(ya)力(li)后立即關閉閥門)，低(di)于0.2MPa時應(ying)加SF6氣體(ti)，以增加氣絕緣。

9、耐壓實驗前(qian)后應測量(liang)被(bei)試設備的絕緣電阻(zu)，檢查絕緣情況。

10、當試驗變壓器(qi)長期不使用時(shi)，應放置于通風、干燥、無陽光直(zhi)射的(de)地(di)方。

11、該產(chan)品不允許在高于45℃的溫度下長期存(cun)放、使(shi)用、放氣。

12、運輸搬運途中不得重(zhong)力沖擊。

13、產品緊(jin)固件及壓力(li)閥、壓力(li)表(biao)不得擅(shan)自松動。

14、使用本產品(pin)做高壓(ya)試(shi)驗(yan)時，出熟悉本說明書外，還必須(xu)嚴格(ge)執行國家有(you)關標準和操作規程。可(ke)參照GB311-83《高壓(ya)輸變設備的絕緣配合(he)，高壓(ya)試(shi)驗(yan)技術(shu)》；《電(dian)氣設備預防性試(shi)驗(yan)規程》等。

五、WBYD-100KVA/100KV試驗變壓器容量選擇

標稱試驗變壓器容量Pn的確定(ding)公式(shi)：Pn=kVn 2ωCt×10-9

式中(zhong)：

Pn——標稱(cheng)試驗(yan)變壓器容(rong)量(liang)(kVA)

Vn——試驗變(bian)壓(ya)器的(de)(de)額定輸出高壓(ya)的(de)(de)有效(xiao)值(kV)

k ——**系(xi)數(shu)。k≥1，標稱電壓Vn≥1MV時，k=2；標稱電壓較低時，k值(zhi)可(ke)取(qu)高一(yi)些。

Ct——被試品的電(dian)容量(pF)

ω——角(jiao)頻率，ω=2πf， f——試驗電源(yuan)的頻率

被試設備的電容量Ct可由交(jiao)流電橋測出。Ct的變化很大(da)，

可(ke)由設備的類(lei)型而(er)定。

典型數據如下：

簡(jian)單(dan)的棒式或懸式絕緣子   幾十微法