干式(shi)變(bian)(bian)壓(ya)(ya)(ya)器(qi)是鐵(tie)心和(he)繞(rao)(rao)組(zu)(zu)不浸絕(jue)緣(yuan)油的(de)(de)(de)變(bian)(bian)壓(ya)(ya)(ya)器(qi)，其冷(leng)卻方式(shi)分為(wei)(wei)自(zi)然(ran)風冷(leng)(AN)和(he)強制(zhi)風冷(leng)(AF)。在自(zi)然(ran)風冷(leng)中，變(bian)(bian)壓(ya)(ya)(ya)器(qi)可(ke)以在額(e)定容量下長(chang)時間(jian)連續運(yun)行(xing)(xing)(xing)。強制(zhi)風冷(leng)時，變(bian)(bian)壓(ya)(ya)(ya)器(qi)輸出(chu)容量可(ke)提高(gao)50%。適(shi)用(yong)于(yu)間(jian)歇過(guo)(guo)(guo)(guo)載(zai)(zai)運(yun)行(xing)(xing)(xing)或(huo)(huo)緊急(ji)過(guo)(guo)(guo)(guo)載(zai)(zai)運(yun)行(xing)(xing)(xing)；由于(yu)過(guo)(guo)(guo)(guo)載(zai)(zai)時負載(zai)(zai)損耗和(he)阻(zu)抗(kang)電壓(ya)(ya)(ya)增加較大(da)，處(chu)于(yu)不經濟(ji)(ji)運(yun)行(xing)(xing)(xing)狀態，不宜長(chang)時間(jian)連續過(guo)(guo)(guo)(guo)載(zai)(zai)運(yun)行(xing)(xing)(xing)。干式(shi)變(bian)(bian)壓(ya)(ya)(ya)器(qi)1的(de)(de)(de)鐵(tie)芯(xin)和(he)繞(rao)(rao)組(zu)(zu)特性(xing)。鐵(tie)芯(xin)采用(yong)優(you)質冷(leng)軋晶粒取向硅鋼(gang)(gang)片(pian)，鐵(tie)芯(xin)硅鋼(gang)(gang)片(pian)采用(yong)45度(du)全斜接(jie)，使磁通沿硅鋼(gang)(gang)片(pian)的(de)(de)(de)接(jie)頭方向通過(guo)(guo)(guo)(guo)；2.繞(rao)(rao)組(zu)(zu)有(you)以下幾(ji)種類型(xing)：(1)繞(rao)(rao)組(zu)(zu)型(xing)；(2)灌(guan)注(zhu)環(huan)(huan)氧(yang)樹脂(zhi)和(he)石英砂；(3)玻璃(li)纖維(wei)增強環(huan)(huan)氧(yang)樹脂(zhi)澆(jiao)注(zhu)(即(ji)薄絕(jue)緣(yuan)結構(gou))；(4)多(duo)股玻璃(li)纖維(wei)浸漬(zi)環(huan)(huan)氧(yang)樹脂(zhi)纏繞(rao)(rao)式(shi)；(一般用(yong)3是因為(wei)(wei)能有(you)效防止澆(jiao)注(zhu)樹脂(zhi)開裂，提高(gao)設備的(de)(de)(de)可(ke)靠性(xing)。) 3.高(gao)壓(ya)(ya)(ya)繞(rao)(rao)組(zu)(zu)一般采用(yong)多(duo)層圓柱形(xing)或(huo)(huo)多(duo)層分段結構(gou)；4.低壓(ya)(ya)(ya)繞(rao)(rao)組(zu)(zu)一般采用(yong)疊片(pian)或(huo)(huo)箔片(pian)結構(gou)。目前，干式(shi)變(bian)(bian)壓(ya)(ya)(ya)器(qi)廣泛應用(yong)于(yu)局部照(zhao)明(ming)、高(gao)層建筑(zhu)、機(ji)場、碼(ma)頭數控機(ji)械(xie)設備、電站、工廠(chang)*等場所(suo)。干式(shi)變(bian)(bian)壓(ya)(ya)(ya)器(qi)應在額(e)定容量下運(yun)行(xing)(xing)(xing)。過(guo)(guo)(guo)(guo)載(zai)(zai)運(yun)行(xing)(xing)(xing)是一種不經濟(ji)(ji)的(de)(de)(de)運(yun)行(xing)(xing)(xing)狀態，因為(wei)(wei)過(guo)(guo)(guo)(guo)載(zai)(zai)時負載(zai)(zai)損耗和(he)阻(zu)抗(kang)電壓(ya)(ya)(ya)大(da)大(da)增加，所(suo)以不應長(chang)期持續過(guo)(guo)(guo)(guo)載(zai)(zai)。