Polyphase AC Circuits
December 8, 2016
Categorised in: 1st Year Electrical
(1) Balanced star load:
Line voltage = √3 phase voltage
Line current = phase current
Power Relations:
Apparant Power: S = √3 $V_L I_L$ VA or kVA
Active Power: P = √3 $V_L I_L$ cosϕ watt
Reactive Power: Q = √3 $V_L I_L$ sinϕ kVAR
(2) Balanced delta load:
Line voltage = phase voltage
Line current = √3 Phase current
Power formulae are same as that of star load
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