本(ben)系(xi)列(lie)適用于額(e)定頻率為50赫茲(zi)的開(kai)關、電(dian)(dian)(dian)流互感器、金剛石、短路加熱等電(dian)(dian)(dian)器設備(bei)的連續負載試驗作(zuo)為升流及加熱。一般需在電(dian)(dian)(dian)源前側加電(dian)(dian)(dian)壓(ya)調節,使(shi)低(di)壓(ya)側達到無級調壓(ya)。