二(er)管手搖滑(hua)線滑(hua)動(dong)變(bian)阻器(qi)(qi)適(shi)用(yong)(yong)于交流(liu)50HZ，380V以(yi)(yi)下(xia)，直流(liu)440V以(yi)(yi)下(xia)的(de)電(dian)(dian)路中，在(zai)電(dian)(dian)氣機械設計(ji)階段中作變(bian)更電(dian)(dian)流(liu)，電(dian)(dian)壓和(he)作為(wei)代替未定電(dian)(dian)阻值的(de)可變(bian)電(dian)(dian)阻器(qi)(qi)應用(yong)(yong)。在(zai)實驗(yan)(yan)室(shi)中作研究試驗(yan)(yan)或教學演示(shi)用(yong)(yong)的(de)電(dian)(dian)流(liu)、電(dian)(dian)壓調節器(qi)(qi)，以(yi)(yi)及(ji)作為(wei)發電(dian)(dian)設備和(he)直流(liu)電(dian)(dian)動(dong)機的(de)勵磁(ci)、調速電(dian)(dian)阻等之用(yong)(yong)