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u型加熱(re)硅碳棒(bang)使(shi)用(yong)(yong)***時間后，由(you)于(yu)電(dian)(dian)阻值增(zeng)(zeng)大，需要提高電(dian)(dian)壓(ya)(ya)(ya)，用(yong)(yong)以補償電(dian)(dian)阻增(zeng)(zeng)加的損失，因此需要變壓(ya)(ya)(ya)器(qi)有***的電(dian)(dian)壓(ya)(ya)(ya)調(diao)節范(fan)圍；對于(yu)連續運行(xing)的窯爐和料道，電(dian)(dian)壓(ya)(ya)(ya)調(diao)整范(fan)圍為0.7～2.5V(V是指硅碳棒(bang)元件初期使(shi)用(yong)(yong)的電(dian)(dian)壓(ya)(ya)(ya))。通過增(zeng)(zeng)壓(ya)(ya)(ya)調(diao)節，可以延長碳化硅元件的使(shi)用(yong)(yong)壽命。

u型(xing)加熱硅(gui)碳棒的接線方(fang)法(fa)，可(ke)采(cai)用并聯(lian)、串(chuan)聯(lian)、角(jiao)形、星形以及(ji)其它形式(shi)的接線方(fang)式(shi);但是并聯(lian)優越于串(chuan)聯(lian)，并聯(lian)可(ke)以調節負荷不(bu)平衡的因(yin)(yin)素，而多支串(chuan)聯(lian)則加重了不(bu)平衡的因(yin)(yin)素，提(ti)高了工作電(dian)壓。