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變壓器的原理

變壓器的(de)(de)(de)(de)(de)原(yuan)理并不復(fu)雜，它利用了電(dian)(dian)(dian)(dian)(dian)(dian)磁感(gan)應原(yuan)理。當其中一塊導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)體有(you)一些不定(ding)量的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)通過，便(bian)(bian)(bian)會產(chan)(chan)生(sheng)(sheng)變動(dong)的(de)(de)(de)(de)(de)磁場(chang)。根據電(dian)(dian)(dian)(dian)(dian)(dian)磁的(de)(de)(de)(de)(de)互感(gan)原(yuan)理，這(zhe)變動(dong)的(de)(de)(de)(de)(de)磁場(chang)會使(shi)第(di)二塊導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)體產(chan)(chan)生(sheng)(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)勢差。假如第(di)二塊導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)體是一條閉合(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)一部份(fen)，那么該閉合(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)路便(bian)(bian)(bian)會產(chan)(chan)生(sheng)(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。電(dian)(dian)(dian)(dian)(dian)(dian)力于是得以傳(chuan)送(song)。在通用的(de)(de)(de)(de)(de)變壓器中，有(you)關(guan)(guan)的(de)(de)(de)(de)(de)導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)體是由電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)組成線(xian)(xian)(xian)圈(quan)(quan)(quan)，因為線(xian)(xian)(xian)圈(quan)(quan)(quan)所產(chan)(chan)生(sheng)(sheng)的(de)(de)(de)(de)(de)磁場(chang)要比一條筆直的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)大(da)得多。當初級(ji)(ji)線(xian)(xian)(xian)圈(quan)(quan)(quan)中通有(you)交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)時(shi)，鐵芯中便(bian)(bian)(bian)產(chan)(chan)生(sheng)(sheng)交(jiao)流(liu)磁通，使(shi)次級(ji)(ji)線(xian)(xian)(xian)圈(quan)(quan)(quan)中感(gan)應出電(dian)(dian)(dian)(dian)(dian)(dian)壓。初級(ji)(ji)線(xian)(xian)(xian)圈(quan)(quan)(quan)、次級(ji)(ji)線(xian)(xian)(xian)圈(quan)(quan)(quan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓VS，VP和兩者(zhe)的(de)(de)(de)(de)(de)繞線(xian)(xian)(xian)的(de)(de)(de)(de)(de)匝數NS，NP之間(jian)有(you)正比的(de)(de)(de)(de)(de)關(guan)(guan)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，變壓器品牌產品的這個性(xing)質使它成為轉換(huan)電壓(ya)的重(zhong)要設備(bei)。由于變(bian)壓(ya)器(qi)(qi)遵守這兩(liang)條(tiao)定律，它不會(hui)是放大器(qi)(qi)。如果處在變(bian)壓(ya)器(qi)(qi)兩(liang)方的電壓(ya)有所不同，那么流經變(bian)壓(ya)器(qi)(qi)兩(liang)方的電流也會(hui)不同，而(er)兩(liang)者的差距(ju)則成反比。

干式變壓器和油浸式變壓器的區別

干式變壓(ya)(ya)(ya)器能直接看到鐵(tie)芯和(he)線(xian)圈，大(da)多使用硅橡膠套管，適(shi)用于配電(dian)用，容量大(da)都(dou)在1600KVA以(yi)(yi)下(xia)(xia)，電(dian)壓(ya)(ya)(ya)在10KV以(yi)(yi)下(xia)(xia)，也(ye)有個(ge)別做到35KV電(dian)壓(ya)(ya)(ya)等級(ji)的。油式變壓(ya)(ya)(ya)器只能看到變壓(ya)(ya)(ya)器的外(wai)殼，大(da)部分使用瓷套管，可(ke)用于高壓(ya)(ya)(ya)電(dian)路，可(ke)以(yi)(yi)從小到大(da)做到全部容量，電(dian)壓(ya)(ya)(ya)等級(ji)也(ye)做到了所(suo)有電(dian)壓(ya)(ya)(ya)。

變壓器的等級怎么劃分

變(bian)(bian)壓(ya)(ya)器(qi)(qi)的(de)電壓(ya)(ya)等級是固(gu)定的(de)，常(chang)見的(de)有(you)1000KV、750KV、500KV、330KV、220KV、110KV、66KV、35KV、20KV、10KV、6KV等等。變(bian)(bian)壓(ya)(ya)器(qi)(qi)的(de)容(rong)量等級按照R10優先系數來計(ji)算的(de)，可分為小型變(bian)(bian)壓(ya)(ya)器(qi)(qi)、中(zhong)型變(bian)(bian)壓(ya)(ya)器(qi)(qi)、大型變(bian)(bian)壓(ya)(ya)器(qi)(qi)、特大型變(bian)(bian)壓(ya)(ya)器(qi)(qi)這四個等級。