串(chuan)級式工(gong)頻(pin)試(shi)驗(yan)變壓器產品概(gai)述
YD(C)串激式主要(yao)特點及功能(neng)同(tong)YDJ/TDM系(xi)列(lie)，其不同(tong)于(yu)(yu)上述變(bian)(bian)(bian)壓(ya)(ya)器(qi)的(de)(de)功能(neng)同(tong)高壓(ya)(ya)試驗(yan)變(bian)(bian)(bian)壓(ya)(ya)器(qi)相比有很大的(de)(de)優越性，因為整個(ge)試驗(yan)裝(zhuang)置由幾(ji)臺(tai)(tai)單(dan)(dan)臺(tai)(tai)試驗(yan)變(bian)(bian)(bian)壓(ya)(ya)器(qi)組成(cheng)，單(dan)(dan)臺(tai)(tai)試驗(yan)變(bian)(bian)(bian)壓(ya)(ya)器(qi)容量小、電(dian)(dian)壓(ya)(ya)低、重量輕(qing)，便于(yu)(yu)運輸和(he)安裝(zhuang)。它既然可(ke)串接(jie)成(cheng)高出(chu)幾(ji)倍的(de)(de)單(dan)(dan)臺(tai)(tai)試驗(yan)變(bian)(bian)(bian)壓(ya)(ya)器(qi)輸出(chu)電(dian)(dian)壓(ya)(ya)組合使用，又(you)可(ke)分開成(cheng)幾(ji)套(tao)單(dan)(dan)臺(tai)(tai)試驗(yan)變(bian)(bian)(bian)壓(ya)(ya)器(qi)單(dan)(dan)獨(du)使用
特(te)性
在(zai)串級(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)器(qi)基本(ben)原理圖中，低(di)壓(ya)(ya)(ya)電(dian)源加在(zai)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)I的(de)(de)初(chu)(chu)級(ji)繞(rao)組(zu)a1x1上(shang)，單臺試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)Ⅰ、Ⅱ、Ⅲ的(de)(de)輸(shu)出電(dian)壓(ya)(ya)(ya)都是(shi)(shi)V。勵磁繞(rao)組(zu)A1、C1給第(di)二(er)級(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)Ⅱ的(de)(de)初(chu)(chu)級(ji)繞(rao)組(zu)供電(dian);第(di)二(er)級(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)Ⅱ的(de)(de)勵磁繞(rao)組(zu)A2、C2給第(di)三級(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)Ⅲ的(de)(de)初(chu)(chu)級(ji)繞(rao)組(zu)供電(dian)。第(di)二(er)級(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)Ⅱ和(he)第(di)三級(ji)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)Ⅲ的(de)(de)箱體(ti)(ti)分別處在(zai)對地為1V和(he)2V的(de)(de)高電(dian)位(wei)上(shang)，所以箱體(ti)(ti)對地是(shi)(shi)絕緣的(de)(de)，試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)I的(de)(de)箱體(ti)(ti)是(shi)(shi)接地的(de)(de)。
串級(ji)式(shi)工頻試驗變壓器使用注意事項
1. 試驗變壓(ya)器(qi)應和操作(zuo)箱(臺(tai)(tai))配套使(shi)用，操作(zuo)箱(臺(tai)(tai))的使(shi)用方法，請詳細參閱操作(zuo)箱(臺(tai)(tai))使(shi)用說明書。
2. 變壓(ya)器外殼、高壓(ya)尾(wei)必須(xu)接地(di)。為確保安全(quan)，試驗(yan)人員和其(qi)它被試驗(yan)設(she)備(bei)與試驗(yan)變壓(ya)器之間必須(xu)保持足夠的距離。
3. 工頻(pin)試(shi)驗變壓器的(de)輸出一般應串接限流電阻以保護設備(bei)安全。
在工頻(pin)(pin)耐壓(ya)(ya)(ya)試(shi)(shi)驗中，低(di)壓(ya)(ya)(ya)側(ce)測(ce)量(liang)電(dian)壓(ya)(ya)(ya)（儀表電(dian)壓(ya)(ya)(ya)）并(bing)不是非常準確(que)的(de)，其原因是由于試(shi)(shi)驗變(bian)(bian)壓(ya)(ya)(ya)器(qi)存在漏(lou)抗(kang)，必(bi)然存在著壓(ya)(ya)(ya)降或容升，使試(shi)(shi)品(pin)上電(dian)壓(ya)(ya)(ya)低(di)于或高(gao)于低(di)壓(ya)(ya)(ya)側(ce)儀表上反映出來的(de)電(dian)壓(ya)(ya)(ya)。工頻(pin)(pin)試(shi)(shi)驗變(bian)(bian)壓(ya)(ya)(ya)器(qi)為了準確(que)測(ce)量(liang)被試(shi)(shi)品(pin)上所施加(jia)的(de)電(dian)壓(ya)(ya)(ya)，因此工頻(pin)(pin)試(shi)(shi)驗變(bian)(bian)壓(ya)(ya)(ya)器(qi)常在高(gao)壓(ya)(ya)(ya)側(ce)接入RCF阻(zu)容分壓(ya)(ya)(ya)器(qi)來測(ce)量(liang)電(dian)壓(ya)(ya)(ya)。
