起重量电机功率(KW)运行速度(M/MIN)工作效率(%)空载电流(A)负载电流(A)工字钢范围净重（kg)0.5T0.320400.91.512.6-28b51T0.320400.91.512.6-29b8.72T0.320400.91.512.6-30b13.93T0.4184011.620b-45b23.55T0.4184011.620b-45b40)