What the capacitor Current formula?, For 1 KVAr how amps
its required? for using the KVAr for boosting the PF Design
Calculation.( Eg: for 30 KVAr required how many KW?)
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Answer Posted / sagar
Q = VIsin(fi)
capacitor current = I = Q/Vsin(fi)
For , 230 v and power factor angle 90 ,then
I = 1/230*sin 90 = 4.32 amp.
If power factor angle is 36.89 (power factor 0.8)
,then
P/Q = kw/KVAR = VIcos(fi)/VIsin(fi)
P/Q = cos(fi)/sin(fi) = Tan(fi)
P = Q tan(fi)
P = 30 tan(36.89) = 30 * 0.75 = 22.5 Kw
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