原功率因数cosφ0=0.6,φ0=arccos0.6=53.13°
新功率因数cosφ=0.9,φ=arccos0.9=25.84°
补偿电容C=P/(ωU^2)(tanφ0-tanφ)
=30x1000/(314x220^2)(tan53.13°-tan25.84°)
=30x1000/15197600(1.3333-0.4843)=0.001676F=1676μF
原功率因数cosφ0=0.6,φ0=arccos0.6=53.13°
新功率因数cosφ=0.9,φ=arccos0.9=25.84°
补偿电容C=P/(ωU^2)(tanφ0-tanφ)
=30x1000/(314x220^2)(tan53.13°-tan25.84°)
=30x1000/15197600(1.3333-0.4843)=0.001676F=1676μF