變(bian)壓(ya)(ya)(ya)(ya)器就其用途可(ke)分為電(dian)(dian)(dian)力(li)變(bian)壓(ya)(ya)(ya)(ya)器、試驗變(bian)壓(ya)(ya)(ya)(ya)器、儀(yi)用變(bian)壓(ya)(ya)(ya)(ya)器及特殊用途的(de)變(bian)壓(ya)(ya)(ya)(ya)器：電(dian)(dian)(dian)力(li)變(bian)壓(ya)(ya)(ya)(ya)器是(shi)電(dian)(dian)(dian)力(li)輸(shu)配(pei)電(dian)(dian)(dian)、電(dian)(dian)(dian)力(li)用戶配(pei)電(dian)(dian)(dian)的(de)必要(yao)設備。目前公司已經廣(guang)泛使(shi)用S11系列(lie)配(pei)電(dian)(dian)(dian)變(bian)壓(ya)(ya)(ya)(ya)器，并正(zheng)在(zai)城(cheng)網改造中(zhong)逐步推廣(guang)S13系列(lie)，未來一段時(shi)間(jian)S11、S13系列(lie)油浸式配(pei)電(dian)(dian)(dian)變(bian)壓(ya)(ya)(ya)(ya)器將完全取(qu)代現有在(zai)網運行的(de)S9系列(lie)。變(bian)壓(ya)(ya)(ya)(ya)器的(de)鐵心(xin)(xin)的(de)作用是(shi)加強兩(liang)個(ge)線圈間(jian)的(de)磁耦合。為了(le)減少鐵內渦流和(he)磁滯損耗，鐵心(xin)(xin)由涂漆的(de)硅(gui)鋼片疊(die)壓(ya)(ya)(ya)(ya)而成;兩(liang)個(ge)線圈之間(jian)沒有電(dian)(dian)(dian)的(de)聯系，線圈由絕緣(yuan)銅線（或鋁線）繞(rao)成。

變(bian)(bian)壓(ya)(ya)器的(de)(de)鐵心的(de)(de)作用是加(jia)強(qiang)兩(liang)(liang)個線(xian)(xian)圈間(jian)的(de)(de)磁耦合。為(wei)了減少(shao)鐵內渦流(liu)和磁滯損(sun)耗，400kva變(bian)(bian)壓(ya)(ya)器多少(shao)錢(qian)一臺，鐵心由(you)涂漆的(de)(de)硅鋼片疊壓(ya)(ya)而成;兩(liang)(liang)個線(xian)(xian)圈之間(jian)沒有電(dian)的(de)(de)聯系，線(xian)(xian)圈由(you)絕緣銅線(xian)(xian)（或鋁線(xian)(xian)）繞(rao)成。電(dian)力變(bian)(bian)壓(ya)(ya)器是一種(zhong)(zhong)靜止的(de)(de)電(dian)氣(qi)設備(bei)，是用來將某一數值的(de)(de)交流(liu)電(dian)壓(ya)(ya)（電(dian)流(liu)）變(bian)(bian)成頻率相同(tong)的(de)(de)另(ling)一種(zhong)(zhong)或幾(ji)種(zhong)(zhong)數值不同(tong)的(de)(de)電(dian)壓(ya)(ya)（電(dian)流(liu)）的(de)(de)設備(bei)。隨著我(wo)國經濟經濟水平(ping)的(de)(de)提升和市(shi)場開放程度及市(shi)場化進程的(de)(de)日(ri)益(yi)深(shen)化，變(bian)(bian)壓(ya)(ya)器作為(wei)輸(shu)變(bian)(bian)電(dian)系統中的(de)(de)主要設備(bei)得到了長足發展。

變(bian)壓器(qi)是(shi)利用電磁感應原(yuan)理制成(cheng)的(de)(de)(de)靜止用電器(qi)。當變(bian)壓器(qi)的(de)(de)(de)原(yuan)線圈(quan)接在交(jiao)流(liu)電源上時(shi)，鐵(tie)心中(zhong)便產(chan)生(sheng)交(jiao)變(bian)磁通，交(jiao)變(bian)磁通用φ表(biao)示。原(yuan)、副(fu)線圈(quan)中(zhong)的(de)(de)(de)φ是(shi)相同(tong)的(de)(de)(de)。盡管我國(guo)配(pei)電變(bian)壓器(qi)行業(ye)(ye)競爭激烈，但對具有新(xin)技(ji)術、新(xin)材料、新(xin)工(gong)藝的(de)(de)(de)生(sheng)產(chan)企(qi)(qi)業(ye)(ye)來說機遇大于挑戰。未來將(jiang)逐步被節(jie)(jie)能(neng)、節(jie)(jie)材、環保、低噪音的(de)(de)(de)變(bian)壓器(qi)所(suo)取代。中(zhong)國(guo)變(bian)壓器(qi)網完善網站(zhan)結(jie)構(gou) 穩固(gu)主流(liu)地位(wei)：在社(she)會經濟的(de)(de)(de)大潮中(zhong)，我國(guo)變(bian)壓器(qi)企(qi)(qi)業(ye)(ye)為適應和滿(man)足(zu)市(shi)場(chang)需求，開(kai)始了產(chan)品結(jie)構(gou)及(ji)產(chan)品性(xing)能(neng)的(de)(de)(de)改進及(ji)拓(tuo)展之路。