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應(ying)用(yong)范圍:自耦 型(xing)號(hao)QZB 頻(pin)率(lv)特性:低頻(pin) 相(xiang)數:單相(xiang) 鐵心形(xing)狀:E型(xing) 冷卻(que)形(xing)式(shi)(shi):干式(shi)(shi) 鐵心結構(gou):心式(shi)(shi) 繞(rao)組數目:自耦 防潮方(fang)式(shi)(shi):開放式(shi)(shi) 冷卻(que)方(fang)式(shi)(shi):自然冷式(shi)(shi) 外形(xing)結構(gou):立式(shi)(shi) 電壓比:380（V） 效率(lv)(η):98%（KVA） 額定(ding)功率(lv):50/60（Hz）

概述:

QZB自耦減壓啟動(dong)變壓器適用(yong)(yong)于(yu)交流(liu)50Hz或60Hz,額定(ding)工作電(dian)壓380V(660V)功率至300（500）KW的三(san)相鼠籠型(xing)感應電(dian)動(dong)機(ji)(ji)(ji)作為降壓起動(dong)之用(yong)(yong)，利用(yong)(yong)自耦降壓的方法以改善(shan)當電(dian)動(dong)機(ji)(ji)(ji)起動(dong)時(shi)對電(dian)網的影響。本產品(pin)廣泛(fan)用(yong)(yong)于(yu)機(ji)(ji)(ji)械(xie)、石油、化工、電(dian)力、煤礦、冶(ye)金、等領域(yu)中的電(dian)機(ji)(ji)(ji)系統(tong),該系統(tong)還適用(yong)(yong)于(yu)降壓的方法以改善(shan)當電(dian)動(dong)機(ji)(ji)(ji)起動(dong)時(shi)對輸出網絡的影響.

使用環境:

（1）、海拔(ba)高(gao)度不超過米；

（2）、周(zhou)圍介質溫(wen)度不高于+40℃，不低于-10℃；

（3）、空氣相對(dui)濕度不大于85％；

（4）、震幅不大(da)于0.5毫米，頻率不大(da)于每分(fen)鐘600次(ci)的震動(dong)；

（5）、于垂直面(mian)的(de)傾斜度不超過5度；

（6）、在無(wu)(wu)爆炸危險的介質(zhi)中(zhong)(zhong)，且介質(zhi)中(zhong)(zhong)無(wu)(wu)足以腐(fu)蝕金屬和破壞(huai)絕緣的氣體及導電塵埃的地方。

技術參數:

1.自(zi)耦(ou)降壓起動(dong)(dong)是將自(zi)耦(ou)變壓器串到電動(dong)(dong)機定子繞組上以降低起動(dong)(dong)電壓,起動(dong)(dong)完成后(hou)被切(qie)除.

2.用(yong)自(zi)耦變(bian)壓器引出一個或多個抽(chou)(chou)頭,來(lai)實現降低電(dian)壓來(lai)起動(dong)(dong)(dong)電(dian)動(dong)(dong)(dong)機的(de)(de).本起動(dong)(dong)(dong)器通常有兩個不(bu)(bu)同(tong)的(de)(de)抽(chou)(chou)頭(即(ji):65% 80%)用(yong)不(bu)(bu)同(tong)的(de)(de)抽(chou)(chou)頭的(de)(de)電(dian)壓比可(ke)得到(dao)不(bu)(bu)同(tong)的(de)(de)起動(dong)(dong)(dong)電(dian)壓和(he)轉(zhuan)矩(出廠時一般(ban)接在65%抽(chou)(chou)頭上,如(ru)用(yong)戶需要(yao)較大(da)起動(dong)(dong)(dong)轉(zhuan)矩可(ke)改接在80%的(de)(de)抽(chou)(chou)頭上).

3.電(dian)(dian)動(dong)機起(qi)動(dong)時,定(ding)(ding)子繞(rao)組得(de)到(dao)的電(dian)(dian)壓是自(zi)耦(ou)變(bian)(bian)壓器(qi)(qi)的二次電(dian)(dian)壓,一旦起(qi)動(dong)完畢自(zi)耦(ou)變(bian)(bian)壓器(qi)(qi)便被短接.額定(ding)(ding)電(dian)(dian)壓即自(zi)耦(ou)變(bian)(bian)壓器(qi)(qi)的一次電(dian)(dian)壓直接加于(yu)定(ding)(ding)子繞(rao)組電(dian)(dian)動(dong)機進入(ru)全(quan)壓正常工作.

4.本產品(pin)起(qi)動(dong)(dong)電(dian)(dian)動(dong)(dong)機時(shi),電(dian)(dian)源進線的起(qi)動(dong)(dong)電(dian)(dian)流不(bu)超(chao)過電(dian)(dian)機額定電(dian)(dian)流的3-4倍,最大(da)起(qi)動(dong)(dong)時(shi)間(jian)不(bu)得超(chao)過15秒(miao),間(jian)隔時(shi)間(jian)為30秒(miao)數次起(qi)動(dong)(dong)時(shi)間(jian)的總和;若(ruo)一次已達兩分鐘,則(ze)起(qi)動(dong)(dong)后冷卻時(shi)間(jian),應不(bu)小于4小時(shi)才能(neng)再次起(qi)動(dong)(dong),因此(ci),本產品(pin)僅(jin)作長(chang)時(shi)間(jian)間(jian)歇起(qi)動(dong)(dong)應用(yong),不(bu)適宜(yi)在(zai)頻繁(fan)操作條件(jian)下使用(yong).