一般常用電(dian)(dian)源(yuan)變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)按相(xiang)(xiang)數分(fen)：(1)單(dan)相(xiang)(xiang)電(dian)(dian)源(yuan)變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)：用于單(dan)相(xiang)(xiang)負荷和(he)三相(xiang)(xiang)電(dian)(dian)源(yuan)變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)組。(2)三相(xiang)(xiang)電(dian)(dian)源(yuan)變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)：用于三相(xiang)(xiang)系統的(de)(de)升(sheng)、降電(dian)(dian)壓(ya)(ya)。變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)：簡(jian)(jian)單(dan)的(de)(de)說，變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)就是(shi)利用交變(bian)(bian)(bian)(bian)電(dian)(dian)磁場來實(shi)現(xian)不(bu)同電(dian)(dian)壓(ya)(ya)等(deng)級轉(zhuan)換(huan)的(de)(de)設備（實(shi)際(ji)上是(shi)電(dian)(dian)能的(de)(de)轉(zhuan)換(huan)），其變(bian)(bian)(bian)(bian)換(huan)前后的(de)(de)電(dian)(dian)壓(ya)(ya)不(bu)發(fa)生頻率(lv)上的(de)(de)變(bian)(bian)(bian)(bian)化。變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)可以(yi)變(bian)(bian)(bian)(bian)換(huan)交流電(dian)(dian)壓(ya)(ya)、電(dian)(dian)流和(he)阻抗。簡(jian)(jian)單(dan)的(de)(de)鐵心變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)由一個軟磁材料做成的(de)(de)鐵心及(ji)套在鐵心上的(de)(de)兩個匝數不(bu)等(deng)的(de)(de)線(xian)圈構(gou)成。

變(bian)壓(ya)器(qi)(qi)由(you)鐵(tie)芯（或(huo)磁芯）和線圈(quan)組(zu)成(cheng)，小型變(bian)壓(ya)器(qi)(qi)，線圈(quan)有(you)兩個或(huo)兩個以(yi)上的(de)繞組(zu)，其(qi)中(zhong)(zhong)(zhong)接(jie)電(dian)源的(de)繞組(zu)叫(jiao)初級線圈(quan)，其(qi)余的(de)繞組(zu)叫(jiao)次級線圈(quan)。中(zhong)(zhong)(zhong)國(guo)變(bian)壓(ya)器(qi)(qi)網完善網站(zhan)結構 穩固主流地位：在社(she)會經濟(ji)的(de)大潮(chao)中(zhong)(zhong)(zhong)，我國(guo)變(bian)壓(ya)器(qi)(qi)企業(ye)為適(shi)應和滿(man)足市場(chang)需求，開始了產品結構及產品性能的(de)改進(jin)及拓(tuo)展(zhan)之路。目(mu)前公司已(yi)經廣泛使用S11系(xi)列配電(dian)變(bian)壓(ya)器(qi)(qi)，并正在城網改造中(zhong)(zhong)(zhong)逐(zhu)步推廣S13系(xi)列，未來一段時間S11、S13系(xi)列油浸式配電(dian)變(bian)壓(ya)器(qi)(qi)將完全取代現(xian)有(you)在網運行的(de)S9系(xi)列。

一(yi)般常用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)按(an)相(xiang)(xiang)數分：(1)單相(xiang)(xiang)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)：用(yong)(yong)(yong)于(yu)(yu)單相(xiang)(xiang)負荷和三(san)(san)相(xiang)(xiang)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)組。(2)三(san)(san)相(xiang)(xiang)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)變(bian)(bian)壓(ya)(ya)(ya)器(qi)：用(yong)(yong)(yong)于(yu)(yu)三(san)(san)相(xiang)(xiang)系統的(de)升(sheng)、降(jiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。較(jiao)為節能的(de)電(dian)(dian)(dian)(dian)力變(bian)(bian)壓(ya)(ya)(ya)器(qi)是(shi)非晶合金鐵(tie)心配(pei)電(dian)(dian)(dian)(dian)變(bian)(bian)壓(ya)(ya)(ya)器(qi)，其大優點是(shi)，空(kong)載(zai)損(sun)耗值特低。終能否確(que)保空(kong)載(zai)損(sun)耗值，是(shi)整個設計過程中所(suo)要考(kao)慮的(de)問題。隔(ge)(ge)離(li)變(bian)(bian)壓(ya)(ya)(ya)器(qi)的(de)安全作(zuo)用(yong)(yong)(yong)：隔(ge)(ge)離(li)變(bian)(bian)壓(ya)(ya)(ya)器(qi)作(zuo)用(yong)(yong)(yong)就是(shi)把(ba)兩相(xiang)(xiang)電(dian)(dian)(dian)(dian)隔(ge)(ge)離(li)開來，防(fang)止觸(chu)電(dian)(dian)(dian)(dian)事(shi)故的(de)發生。隔(ge)(ge)離(li)變(bian)(bian)壓(ya)(ya)(ya)器(qi)屬于(yu)(yu)安全電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，一(yi)般用(yong)(yong)(yong)來機器(qi)維修保養用(yong)(yong)(yong)起保護、防(fang)雷、濾波作(zuo)用(yong)(yong)(yong)。