Page 441 - Basic Electrical Engineering
P. 441
Power factor,
Power factor,
Active Power = V I cos ϕ = 1.732 × 400×69.28×0.6
L L
= 28798 W = 28.798 kW
≃ 28.8 kW
Reactive Power = V I sin ϕ = 1.732 × 400×69.28×0.8
L L
= 38397 VAR = 38.397 kVAR
≃ 38.4 kVAR
Apparent Power = 3 V I = V I
Ph Ph
L L
= 1.732 × 400 × 69.28
= 47997 VA = 47.997 kVA
≃ 48 kVA
The power triangle is shown in Fig. 4.11
