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防爆電動滾筒在使用(yong)的(de)時候，如果因為操作不當，導(dao)致整個設備(bei)升(sheng)溫過高(gao)的(de)話，將(jiang)會造成電動滾筒出(chu)現故(gu)(gu)障，這樣維修起來(lai)是(shi)比較麻煩的(de)，所以設備(bei)一般都(dou)會配(pei)備(bei)熱(re)保護(hu)功(gong)能，防止設備(bei)出(chu)現過熱(re)情況(kuang)導(dao)致的(de)故(gu)(gu)障，下(xia)面來(lai)給大家介紹(shao)一下(xia)其(qi)熱(re)保護(hu)功(gong)能。
　　防爆電(dian)(dian)(dian)動(dong)滾筒中電(dian)(dian)(dian)動(dong)機(ji)的熱(re)(re)(re)保護(hu)裝置是將熱(re)(re)(re)敏(min)電(dian)(dian)(dian)阻(zu)于電(dian)(dian)(dian)動(dong)機(ji)的三(san)相繞組(zu)(zu)中，每(mei)相繞組(zu)(zu)中放一只(zhi)熱(re)(re)(re)敏(min)電(dian)(dian)(dian)阻(zu)，三(san)只(zhi)熱(re)(re)(re)敏(min)電(dian)(dian)(dian)串聯。電(dian)(dian)(dian)動(dong)機(ji)的三(san)相繞組(zu)(zu)中，只(zhi)要(yao)一相繞組(zu)(zu)發熱(re)(re)(re)量(liang)超過(guo)規定的溫度(du)(du)(du)時(shi)，雙金(jin)屬片(pian)便起(qi)作(zuo)用切斷電(dian)(dian)(dian)源(yuan)，電(dian)(dian)(dian)動(dong)機(ji)立即停止工(gong)作(zuo)。這樣(yang)熱(re)(re)(re)保護(hu)裝置便起(qi)到了過(guo)載保護(hu)作(zuo)用。經過(guo)一段時(shi)間后，電(dian)(dian)(dian)動(dong)機(ji)繞組(zu)(zu)溫度(du)(du)(du)逐(zhu)漸下降到正常工(gong)作(zuo)溫度(du)(du)(du)時(shi)，雙金(jin)屬片(pian)也(ye)隨之(zhi)冷(leng)卻，恢復(fu)到初始狀態，電(dian)(dian)(dian)路被接通，電(dian)(dian)(dian)動(dong)機(ji)又(you)可以重新(xin)正常工(gong)作(zuo)。