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電機維修分享高低壓電機維修的優缺點介紹

文章出處:maituwangluo.com  |  發布時間:2020/2/28 10:06:48  |  瀏覽次數:391

電機(ji)維(wei)修分(fen)享高低壓(ya)電機(ji)維(wei)修的(de)優缺(que)點(dian)介紹

(1)優點

①可(ke)以(yi)做(zuo)得功率很(hen)(hen)大,大可(ke)達到幾(ji)千甚至幾(ji)萬千瓦。這(zhe)是(shi)因為,在同樣的輸出功率時,高(gao)壓(ya)電(dian)(dian)(dian)(dian)機的電(dian)(dian)(dian)(dian)流(liu)可(ke)比(bi)低壓(ya)電(dian)(dian)(dian)(dian)機小很(hen)(hen)多(基本(ben)上(shang)是(shi)與電(dian)(dian)(dian)(dian)壓(ya)成反比(bi)關系),例如500kW、4極電(dian)(dian)(dian)(dian)機的額定(ding)電(dian)(dian)(dian)(dian)流(liu),額定(ding)電(dian)(dian)(dian)(dian)壓(ya)為380V時為900A左(zuo)右(you),而額定(ding)電(dian)(dian)(dian)(dian)壓(ya)為10kV時只有30A左(zuo)右(you)。所以(yi)高(gao)壓(ya)電(dian)(dian)(dian)(dian)機繞組可(ke)用(yong)較小的線徑(jing)(jing)。由此,高(gao)壓(ya)電(dian)(dian)(dian)(dian)機的定(ding)子(zi)銅損耗(hao)也(ye)會比(bi)低壓(ya)電(dian)(dian)(dian)(dian)機少。對于較大功率的電(dian)(dian)(dian)(dian)機,使用(yong)低壓(ya)電(dian)(dian)(dian)(dian)時,則因需(xu)要較粗的導線而需(xu)要很(hen)(hen)大面(mian)積(ji)的定(ding)子(zi)槽,使定(ding)子(zi)鐵芯直徑(jing)(jing)做(zuo)得很(hen)(hen)大,電(dian)(dian)(dian)(dian)機整(zheng)個體積(ji)也(ye)會很(hen)(hen)大。

②對于(yu)較(jiao)大容量的(de)(de)電(dian)機(ji),高壓(ya)電(dian)機(ji)所(suo)用電(dian)源和配電(dian)設備比低(di)壓(ya)電(dian)機(ji)的(de)(de)總(zong)體投資少(shao),并且線路損耗小(xiao),可節省一定的(de)(de)耗電(dian)量。特(te)別是(shi)10kV的(de)(de)高壓(ya)電(dian)機(ji),可直接(jie)使用網絡電(dian)源(我(wo)國提供給(gei)用戶的(de)(de)高壓(ya)電(dian)一般都是(shi)10kV),這樣在電(dian)源設備(主(zhu)要是(shi)變壓(ya)器)上的(de)(de)投資會(hui)更少(shao),使用也(ye)較(jiao)簡便,故障率也(ye)會(hui)較(jiao)少(shao)。

(2)缺(que)點

①繞組的(de)成(cheng)(cheng)本(ben)相對(dui)較高(gao)(gao)(主要是由(you)絕緣造成(cheng)(cheng)的(de)),相關的(de)絕緣材料成(cheng)(cheng)本(ben)也會較高(gao)(gao)。

②絕緣處理工藝(yi)較難,工時費用較多。

③對使(shi)用環(huan)境的要(yao)求比低壓電(dian)機(ji)要(yao)嚴格(ge)很多。

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