每相负载的阻抗=380/1.732/6.1=36Ω
功率因数=3.3/(1.732*380*6.1/1000)=0.82
每相负载的电阻=36*0.82=29.52Ω
每相负载的感抗=36*(1-0.82^2)^0.5=20.6Ω