變(bian)(bian)壓器(qi)油(you)(you)枕安裝在變(bian)(bian)壓器(qi)的(de)油(you)(you)箱(波(bo)紋油(you)(you)箱)上，還有一個用“玻(bo)璃(li)”封閉的(de)管道(dao)，叫“防爆(bao)管”，就是防止變(bian)(bian)壓器(qi)故障時，油(you)(you)箱加工(gong)(gong)，油(you)(you)溫快速(su)。我國電力變(bian)(bian)壓器(qi)多為油(you)(you)浸(jin)式(shi)變(bian)(bian)壓器(qi)，多年來變(bian)(bian)壓器(qi)滲(shen)(shen)漏油(you)(you)現(xian)象時有發生，嚴重的(de)滲(shen)(shen)漏不但降低(di)了變(bian)(bian)壓器(qi)的(de)使用壽命，影(ying)響系統(tong)的(de)安全、穩定運行。當變(bian)(bian)壓器(qi)負荷(he)增大(da)(da)，油(you)(you)溫，小型油(you)(you)箱加工(gong)(gong)，變(bian)(bian)壓器(qi)油(you)(you)膨脹，油(you)(you)箱中(zhong)(zhong)盛不下時，加工(gong)(gong)油(you)(you)箱廠家，也(ye)會順管道(dao)，回流(liu)(liu)到油(you)(you)枕中(zhong)(zhong)。油(you)(you)枕中(zhong)(zhong)已不能容納時，油(you)(you)流(liu)(liu)就會擠碎玻(bo)璃(li)，從防爆(bao)管沖出，保護變(bian)(bian)壓器(qi)不受(shou)大(da)(da)的(de)損(sun)壞。

油(you)(you)(you)箱(xiang)的作(zuo)用(yong)：油(you)(you)(you)箱(xiang)是(shi)變(bian)壓(ya)器(qi)(qi)(qi)(qi)的外(wai)殼，內裝鐵(tie)芯和(he)繞(rao)(rao)組(zu)(zu)并充滿變(bian)壓(ya)器(qi)(qi)(qi)(qi)油(you)(you)(you)，使鐵(tie)芯和(he)繞(rao)(rao)組(zu)(zu)浸在(zai)油(you)(you)(you)內。變(bian)壓(ya)器(qi)(qi)(qi)(qi)油(you)(you)(you)起絕緣和(he)散熱作(zuo)用(yong)。如何(he)對變(bian)壓(ya)器(qi)(qi)(qi)(qi)油(you)(you)(you)箱(xiang)檢漏方法：油(you)(you)(you)箱(xiang)檢漏也稱(cheng)試(shi)漏，常(chang)用(yong)的有(you)(you)水試(shi)和(he)氣試(shi)兩(liang)種(zhong)；是(shi)變(bian)壓(ya)器(qi)(qi)(qi)(qi)油(you)(you)(you)箱(xiang)生產(chan)廠家試(shi)驗油(you)(you)(you)箱(xiang)是(shi)否(fou)合格的方法。大型變(bian)壓(ya)器(qi)(qi)(qi)(qi)一般有(you)(you)兩(liang)個(ge)(ge)油(you)(you)(you)箱(xiang)，一個(ge)(ge)為(wei)本體(ti)油(you)(you)(you)箱(xiang)；一個(ge)(ge)為(wei)有(you)(you)載(zai)凋壓(ya)油(you)(you)(you)箱(xiang)，有(you)(you)載(zai)調壓(ya)油(you)(you)(you)箱(xiang)內裝有(you)(you)分接開關。因此設一個(ge)(ge)單獨的油(you)(you)(you)箱(xiang)將(jiang)分接開關單獨放置(zhi)。

變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)運(yun)抵現場(chang)和運(yun)行期間一(yi)般(ban)不進行吊(diao)芯檢修，這就要求變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)的(de)質(zhi)量應(ying)有(you)可靠(kao)的(de)保證。隨著變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)制造水平的(de)提高，密封式(shi)結(jie)構也逐漸被(bei)采用(yong)，目前(qian)國內(nei)外(wai)的(de)一(yi)些(xie)大型變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)也已開始(shi)采用(yong)這種結(jie)構。油(you)(you)(you)(you)箱(xiang)(xiang)底部兩對角處應(ying)設有(you)兩塊供油(you)(you)(you)(you)箱(xiang)(xiang)接地的(de)端(duan)子（變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)油(you)(you)(you)(you)箱(xiang)(xiang)即外(wai)殼接地主要是(shi)為(wei)了保障人身安全。當(dang)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)的(de)絕緣損(sun)壞時(shi)，變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)外(wai)殼就會帶電。變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)油(you)(you)(you)(you)箱(xiang)(xiang)(波(bo)紋油(you)(you)(you)(you)箱(xiang)(xiang))就是(shi)裝滿油(you)(you)(you)(you)的(de)，只(zhi)是(shi)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)的(de)油(you)(you)(you)(you)枕中油(you)(you)(you)(you)不能太(tai)滿。 油(you)(you)(you)(you)箱(xiang)(xiang)與油(you)(you)(you)(you)枕通過(guo)管道(dao)連接，當(dang)油(you)(you)(you)(you)箱(xiang)(xiang)中缺(que)少油(you)(you)(you)(you)時(shi)，油(you)(you)(you)(you)枕中的(de)油(you)(you)(you)(you)就會順管道(dao)流(liu)下。