Сеть однофазная.Найдём Ia=U/R=380/30=12.66a.
Z=√R²+XL²=√30²+2πf*L²=43.49om, cosα=r/z=0.6898 ⇒46.5град.
P=UIa*cosα=380*12.66*0.6898=3318.5вт,,
Ip=U/XL=380/43.49=8.73a,, Q=U*Ip*sinα=380*8.73*0.726=2410.5вар,,
S=√P²+Q²=√3318.5²+2410.5=
Сеть однофазная.Найдём Ia=U/R=380/30=12.66a.
Z=√R²+XL²=√30²+2πf*L²=43.49om, cosα=r/z=0.6898 ⇒46.5град.
P=UIa*cosα=380*12.66*0.6898=3318.5вт,,
Ip=U/XL=380/43.49=8.73a,, Q=U*Ip*sinα=380*8.73*0.726=2410.5вар,,
S=√P²+Q²=√3318.5²+2410.5=