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 （1）優點

①可(ke)(ke)以(yi)做(zuo)得功率很大(da)，
大(da)可(ke)(ke)達(da)到幾千(qian)甚至幾萬千(qian)瓦(wa)。這是因為，在同樣的輸出功率時(shi)，高壓電(dian)(dian)(dian)機(ji)(ji)的電(dian)(dian)(dian)流可(ke)(ke)比(bi)低(di)(di)壓電(dian)(dian)(dian)機(ji)(ji)小很多（基本(ben)上是與電(dian)(dian)(dian)壓成反比(bi)關系），例如500kW、4極電(dian)(dian)(dian)機(ji)(ji)的額定(ding)(ding)電(dian)(dian)(dian)流，額定(ding)(ding)電(dian)(dian)(dian)壓為380V時(shi)為900A左右，而額定(ding)(ding)電(dian)(dian)(dian)壓為10kV時(shi)只有30A左右。所以(yi)高壓電(dian)(dian)(dian)機(ji)(ji)繞組可(ke)(ke)用較小的線徑(jing)(jing)。由此(ci)，高壓電(dian)(dian)(dian)機(ji)(ji)的定(ding)(ding)子(zi)銅損耗(hao)也(ye)會比(bi)低(di)(di)壓電(dian)(dian)(dian)機(ji)(ji)少。對于較大(da)功率的電(dian)(dian)(dian)機(ji)(ji)，使用低(di)(di)壓電(dian)(dian)(dian)時(shi)，則因需要較粗的導(dao)線而需要很大(da)面(mian)積的定(ding)(ding)子(zi)槽(cao)，使定(ding)(ding)子(zi)鐵(tie)芯直徑(jing)(jing)做(zuo)得很大(da)，電(dian)(dian)(dian)機(ji)(ji)整個體積也(ye)會很大(da)。

②對(dui)于較大容量(liang)的電(dian)機，高壓電(dian)機所用電(dian)源和配電(dian)設備比低壓電(dian)機的總體(ti)投資少，并且(qie)線(xian)路損耗(hao)小，可(ke)(ke)節省一定的(de)耗(hao)電(dian)(dian)(dian)(dian)(dian)量(liang)。特別是10kV的(de)高壓電(dian)(dian)(dian)(dian)(dian)機(ji)，可(ke)(ke)直(zhi)接(jie)使用(yong)網絡(luo)電(dian)(dian)(dian)(dian)(dian)源（我國提(ti)供給用(yong)戶的(de)高壓電(dian)(dian)(dian)(dian)(dian)一般都是10kV），這樣在電(dian)(dian)(dian)(dian)(dian)源設備（主要是變壓器(qi)）上的(de)投資會更少，使用(yong)也較簡便，故障率(lv)也會較少。

（2）缺(que)點

①繞組的成本相對較(jiao)高（主要是(shi)由絕(jue)緣造成的），相關的絕(jue)緣材(cai)料(liao)成本也(ye)會(hui)較(jiao)高。

②絕緣(yuan)處(chu)理(li)工藝(yi)較難，工時費(fei)用較多。

③對(dui)使用環境(jing)的要求比低壓電(dian)機要嚴格很多