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解析(xi)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)是(shi)利用(yong)電(dian)(dian)(dian)磁感應的原理來改變(bian)(bian)(bian)(bian)(bian)交(jiao)流電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的裝(zhuang)置(zhi)，主要構件是(shi)初級線(xian)圈、次級線(xian)圈和(he)鐵芯（磁芯）。主要功能(neng)有：電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)變(bian)(bian)(bian)(bian)(bian)換、電(dian)(dian)(dian)流變(bian)(bian)(bian)(bian)(bian)換、阻抗變(bian)(bian)(bian)(bian)(bian)換、隔離(li)、穩壓(ya)(ya)(ya)(ya)(ya)（磁飽和(he)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)）等。按用(yong)途(tu)可(ke)以(yi)分為(wei)：電(dian)(dian)(dian)力(li)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)和(he)特殊變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)（電(dian)(dian)(dian)爐變(bian)(bian)(bian)(bian)(bian)、整流變(bian)(bian)(bian)(bian)(bian)、工頻試驗變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、調壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、礦用(yong)變(bian)(bian)(bian)(bian)(bian)、音頻變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、中(zhong)頻變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、高頻變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、沖擊(ji)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、儀用(yong)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、電(dian)(dian)(dian)子變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)、電(dian)(dian)(dian)抗器(qi)(qi)、互感器(qi)(qi)等）。電(dian)(dian)(dian)路符號常(chang)用(yong)T當作(zuo)編(bian)號的開頭.例: T01, T201等。