變壓器的原理

變(bian)壓(ya)(ya)(ya)器的(de)(de)(de)(de)原理(li)并不復雜，它利用了(le)電(dian)(dian)(dian)(dian)磁感應原理(li)。當(dang)其中一(yi)塊導電(dian)(dian)(dian)(dian)體(ti)有(you)一(yi)些不定量的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)通(tong)過，便會產生變(bian)動的(de)(de)(de)(de)磁場(chang)。根據電(dian)(dian)(dian)(dian)磁的(de)(de)(de)(de)互感原理(li)，這變(bian)動的(de)(de)(de)(de)磁場(chang)會使(shi)(shi)第二(er)塊導電(dian)(dian)(dian)(dian)體(ti)產生電(dian)(dian)(dian)(dian)勢(shi)差。假如第二(er)塊導電(dian)(dian)(dian)(dian)體(ti)是(shi)(shi)一(yi)條(tiao)閉(bi)合電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)一(yi)部份，那(nei)么該(gai)閉(bi)合電(dian)(dian)(dian)(dian)路(lu)便會產生電(dian)(dian)(dian)(dian)流(liu)。電(dian)(dian)(dian)(dian)力于(yu)是(shi)(shi)得以傳送。在通(tong)用的(de)(de)(de)(de)變(bian)壓(ya)(ya)(ya)器中，有(you)關的(de)(de)(de)(de)導電(dian)(dian)(dian)(dian)體(ti)是(shi)(shi)由電(dian)(dian)(dian)(dian)線(xian)組成(cheng)線(xian)圈(quan)(quan)，因為線(xian)圈(quan)(quan)所產生的(de)(de)(de)(de)磁場(chang)要比(bi)一(yi)條(tiao)筆直的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)線(xian)大得多。當(dang)初級(ji)線(xian)圈(quan)(quan)中通(tong)有(you)交(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)流(liu)時，鐵芯中便產生交(jiao)(jiao)流(liu)磁通(tong)，使(shi)(shi)次級(ji)線(xian)圈(quan)(quan)中感應出電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。初級(ji)線(xian)圈(quan)(quan)、次級(ji)線(xian)圈(quan)(quan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)VS，VP和兩(liang)者的(de)(de)(de)(de)繞線(xian)的(de)(de)(de)(de)匝(za)數NS，NP之間有(you)正比(bi)的(de)(de)(de)(de)關系。

至于變壓器兩方之間的電流或電壓比例，則取決于兩方電路線圈的圈數。圈數較多的一方電壓較高但電流較小，反之亦然。如果撇除泄漏等因素，變壓器兩方的電壓比例相等于兩方的線圈圈數比例，亦即電壓與圈數成正比。因此可以減小或者增加原線圈和副線圈的匝數比，從而升高或者降低電壓，變壓器品牌產品的(de)(de)這個性質使它(ta)成為轉換(huan)電(dian)壓(ya)(ya)的(de)(de)重要設備。由于變(bian)壓(ya)(ya)器遵(zun)守這兩條定律，它(ta)不會是放大器。如果處在變(bian)壓(ya)(ya)器兩方的(de)(de)電(dian)壓(ya)(ya)有所不同(tong)，那么流經變(bian)壓(ya)(ya)器兩方的(de)(de)電(dian)流也會不同(tong)，而兩者的(de)(de)差距則(ze)成反比。

干式變壓器和油浸式變壓器的區別

干式(shi)變(bian)壓(ya)(ya)器能(neng)直接看(kan)到(dao)(dao)鐵芯和線圈，大(da)多(duo)使用(yong)(yong)(yong)(yong)硅橡(xiang)膠套管(guan)，適用(yong)(yong)(yong)(yong)于配電(dian)用(yong)(yong)(yong)(yong)，容(rong)量大(da)都在1600KVA以(yi)下，電(dian)壓(ya)(ya)在10KV以(yi)下，也有(you)個別(bie)做(zuo)(zuo)到(dao)(dao)35KV電(dian)壓(ya)(ya)等級的(de)。油(you)式(shi)變(bian)壓(ya)(ya)器只能(neng)看(kan)到(dao)(dao)變(bian)壓(ya)(ya)器的(de)外(wai)殼，大(da)部分使用(yong)(yong)(yong)(yong)瓷套管(guan)，可用(yong)(yong)(yong)(yong)于高壓(ya)(ya)電(dian)路，可以(yi)從(cong)小到(dao)(dao)大(da)做(zuo)(zuo)到(dao)(dao)全部容(rong)量，電(dian)壓(ya)(ya)等級也做(zuo)(zuo)到(dao)(dao)了(le)所有(you)電(dian)壓(ya)(ya)。

變壓器的等級怎么劃分

變(bian)壓(ya)(ya)器(qi)(qi)的電壓(ya)(ya)等級是固定的，常見的有(you)1000KV、750KV、500KV、330KV、220KV、110KV、66KV、35KV、20KV、10KV、6KV等等。變(bian)壓(ya)(ya)器(qi)(qi)的容量等級按照R10優先(xian)系數來計算的，可分為(wei)小型(xing)變(bian)壓(ya)(ya)器(qi)(qi)、中(zhong)型(xing)變(bian)壓(ya)(ya)器(qi)(qi)、大型(xing)變(bian)壓(ya)(ya)器(qi)(qi)、特大型(xing)變(bian)壓(ya)(ya)器(qi)(qi)這四個等級。

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