串級式工頻試驗變壓器產品概(gai)述

YD(C)串激(ji)式主要特點及功(gong)能同YDJ/TDM系列(lie)，其不同于上述變(bian)(bian)壓(ya)器(qi)(qi)的功(gong)能同高(gao)壓(ya)試驗(yan)(yan)(yan)變(bian)(bian)壓(ya)器(qi)(qi)相(xiang)比有很大的優(you)越(yue)性(xing)，因(yin)為整個試驗(yan)(yan)(yan)裝置由幾臺(tai)單臺(tai)試驗(yan)(yan)(yan)變(bian)(bian)壓(ya)器(qi)(qi)組成(cheng)(cheng)，單臺(tai)試驗(yan)(yan)(yan)變(bian)(bian)壓(ya)器(qi)(qi)容量小、電壓(ya)低、重量輕，便于運輸(shu)和安(an)裝。它既(ji)然可串接成(cheng)(cheng)高(gao)出(chu)(chu)幾倍的單臺(tai)試驗(yan)(yan)(yan)變(bian)(bian)壓(ya)器(qi)(qi)輸(shu)出(chu)(chu)電壓(ya)組合使用，又(you)可分開成(cheng)(cheng)幾套單臺(tai)試驗(yan)(yan)(yan)變(bian)(bian)壓(ya)器(qi)(qi)單獨使用

特性

在(zai)串級(ji)試(shi)驗(yan)(yan)變(bian)(bian)器(qi)基本原理圖中(zhong)，低壓電(dian)源加在(zai)試(shi)驗(yan)(yan)變(bian)(bian)壓器(qi)I的(de)初級(ji)繞(rao)組(zu)(zu)a1x1上，單臺試(shi)驗(yan)(yan)變(bian)(bian)壓Ⅰ、Ⅱ、Ⅲ的(de)輸出電(dian)壓都(dou)是(shi)V。勵磁繞(rao)組(zu)(zu)A1、C1給第二級(ji)試(shi)驗(yan)(yan)變(bian)(bian)壓器(qi)Ⅱ的(de)初級(ji)繞(rao)組(zu)(zu)供(gong)電(dian);第二級(ji)試(shi)驗(yan)(yan)變(bian)(bian)壓器(qi)Ⅱ的(de)勵磁繞(rao)組(zu)(zu)A2、C2給第三(san)級(ji)試(shi)驗(yan)(yan)變(bian)(bian)壓器(qi)Ⅲ的(de)初級(ji)繞(rao)組(zu)(zu)供(gong)電(dian)。第二級(ji)試(shi)驗(yan)(yan)變(bian)(bian)壓器(qi)Ⅱ和(he)第三(san)級(ji)試(shi)驗(yan)(yan)變(bian)(bian)壓器(qi)Ⅲ的(de)箱體(ti)分別處在(zai)對(dui)地(di)(di)為1V和(he)2V的(de)高電(dian)位(wei)上，所以箱體(ti)對(dui)地(di)(di)是(shi)絕(jue)緣的(de)，試(shi)驗(yan)(yan)變(bian)(bian)壓器(qi)I的(de)箱體(ti)是(shi)接地(di)(di)的(de)。

串級式工頻試(shi)驗(yan)變壓器使用注意事項

1. 試驗變壓器(qi)應和操作箱(xiang)(xiang)(xiang)(臺(tai))配套使(shi)用(yong)，操作箱(xiang)(xiang)(xiang)(臺(tai))的(de)使(shi)用(yong)方法(fa)，請詳細參閱操作箱(xiang)(xiang)(xiang)(臺(tai))使(shi)用(yong)說(shuo)明書。

2. 變壓(ya)器(qi)外殼、高壓(ya)尾必須接地。為確保(bao)(bao)安全，試驗(yan)人(ren)員(yuan)和其它被試驗(yan)設備與(yu)試驗(yan)變壓(ya)器(qi)之間(jian)必須保(bao)(bao)持足夠的距離。

3. 工頻試(shi)驗(yan)變壓器的輸出一般應(ying)串(chuan)接限(xian)流電阻(zu)以(yi)保護設備安全。

在工頻耐(nai)壓(ya)(ya)(ya)試(shi)驗(yan)中，低壓(ya)(ya)(ya)側(ce)(ce)測量(liang)電(dian)(dian)壓(ya)(ya)(ya)（儀表(biao)電(dian)(dian)壓(ya)(ya)(ya)）并不是非常準(zhun)確的(de)，其原因是由于試(shi)驗(yan)變壓(ya)(ya)(ya)器(qi)存(cun)在漏抗，必然存(cun)在著壓(ya)(ya)(ya)降或容(rong)(rong)升，使試(shi)品(pin)上電(dian)(dian)壓(ya)(ya)(ya)低于或高(gao)于低壓(ya)(ya)(ya)側(ce)(ce)儀表(biao)上反(fan)映出來的(de)電(dian)(dian)壓(ya)(ya)(ya)。工頻試(shi)驗(yan)變壓(ya)(ya)(ya)器(qi)為了準(zhun)確測量(liang)被試(shi)品(pin)上所施加的(de)電(dian)(dian)壓(ya)(ya)(ya)，因此(ci)工頻試(shi)驗(yan)變壓(ya)(ya)(ya)器(qi)常在高(gao)壓(ya)(ya)(ya)側(ce)(ce)接入RCF阻容(rong)(rong)分壓(ya)(ya)(ya)器(qi)來測量(liang)電(dian)(dian)壓(ya)(ya)(ya)。