不(bu)相同(tong)(tong)鋼(gang)(gang)種(zhong)的(de)(de)電(dian)(dian)(dian)力(li)(li)變(bian)電(dian)(dian)(dian)器油(you)(you)(you)(you)為什么要混用(yong)?不(bu)相同(tong)(tong)鋼(gang)(gang)種(zhong)的(de)(de)電(dian)(dian)(dian)力(li)(li)變(bian)電(dian)(dian)(dian)器油(you)(you)(you)(you)通(tong)常情況(kuang)下不(bu)適合(he)交織用(yong)，有效用(yong)同(tong)(tong)一個個鋼(gang)(gang)種(zhong)的(de)(de)油(you)(you)(you)(you)號，以確定越來正(zheng)常運作(zuo)油(you)(you)(you)(you)的(de)(de)品質和堅定鋼(gang)(gang)種(zhong)結構特征，因此電(dian)(dian)(dian)力(li)(li)變(bian)電(dian)(dian)(dian)器油(you)(you)(you)(you)按(an)傾點或凝(ning)點已經油(you)(you)(you)(you)號的(de)(de)生活環境(jing)體溫機(ji)械性(xing)能涵蓋：I型(xing)(xing)電(dian)(dian)(dian)力(li)(li)變(bian)電(dian)(dian)(dian)器油(you)(you)(you)(you)常用(yong)型(xing)(xing)(I 0℃、I -10℃、I -20℃、I -30℃、I -40℃)和I型(xing)(xing)電(dian)(dian)(dian)力(li)(li)變(bian)電(dian)(dian)(dian)器油(you)(you)(you)(you)獨特型(xing)(xing)(I -10℃)。通(tong)常情況(kuang)下是利用(yong)設(she)(she)施常見和用(yong)生活環境(jing)體溫用(yong)的(de)(de)，用(yong)同(tong)(tong)一個個鋼(gang)(gang)種(zhong)就可確定其正(zheng)常運作(zuo)性(xing)大(da)體始終(zhong)不(bu)變(bian)，且保(bao)護設(she)(she)施方法檔(dang)案存(cun)放內用(yong)油(you)(you)(you)(you)的(de)(de)中國層次性(xing)。

當沒有變壓器油時能否用機械油代替?10號機械油的運動粘度、凝點和閃點等指標以及外觀有些與10號變壓器油相近，但是由于機械油的加工精制工藝較淺，因而此類油沒有良好絕緣性和氧化安定性，所以不能將機械油或其它劣質油當變壓器油使用。

如果將機(ji)械油誤(wu)當成(cheng)(cheng)變壓器油使用(yong)時(shi)，首先在(zai)驗收“設(she)備中(zhong)油”時(shi)會發(fa)現許多(duo)指標(biao)不能滿足(zu)要求，需對油品進行(xing)處理，如果繼續用(yong)下去(qu)可能造(zao)成(cheng)(cheng)電氣設(she)備事故，不僅毀(hui)壞設(she)備，影響其它部(bu)門正常(chang)工(gong)作，還(huan)可能造(zao)成(cheng)(cheng)人身(shen)事故。有時(shi)也許在(zai)短時(shi)期內不被發(fa)現，但(dan)隨設(she)備運行(xing)時(shi)間增加，問題會暴(bao)露(lu)更多(duo)，因而在(zai)使用(yong)時(shi)切勿麻(ma)痹(bi)大(da)意(yi)。