BX8雙管滑(hua)線滑(hua)動變阻(zu)器適用于(yu)交流(liu)50HZ，380V以下(xia)，直流(liu)440V以下(xia)的電(dian)(dian)(dian)(dian)路中(zhong)，在(zai)電(dian)(dian)(dian)(dian)氣機械設計階段中(zhong)作(zuo)變更電(dian)(dian)(dian)(dian)流(liu)，電(dian)(dian)(dian)(dian)壓和作(zuo)為代替未定(ding)電(dian)(dian)(dian)(dian)阻(zu)值(zhi)的可變電(dian)(dian)(dian)(dian)阻(zu)器應(ying)用。在(zai)實驗室中(zhong)作(zuo)研究試驗或教學(xue)演示(shi)用的電(dian)(dian)(dian)(dian)流(liu)、電(dian)(dian)(dian)(dian)壓調(diao)節器，以及作(zuo)為發(fa)電(dian)(dian)(dian)(dian)設備和直流(liu)電(dian)(dian)(dian)(dian)動機的勵(li)磁、調(diao)速(su)電(dian)(dian)(dian)(dian)阻(zu)等之用。