sir, plz tell me how much kvar capacitor required for 1000
amp or 500 Kw load ? what is the formula ?

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Formula : KVAR = KW(tanĂ˜1-tanĂ˜2)

 Is This Answer Correct ? 35 Yes 10 No

Dear Shovan
This is Prakash veer

KVAR= KW* (tanQ1-tanQ2)

Q1 is intail power factor
Q2 is target power factor

 Is This Answer Correct ? 19 Yes 4 No

we need power factor value

 Is This Answer Correct ? 14 Yes 4 No

Required data for calculation your demand KVAR

2.Required P.F (Improvement in P.F)-(tanQ2)(0.99)
3.Supply Voltage - for reference(Voltage variation if any)
4.Load in KW (exam- availabl with you i.e 500KW)

KVAR= KW(tanQ1-tanQ2)
KVAR= 500(tan0.92- tan0.99)
KVAR = 500(0.2890)
KVAR = 141.75 KVAR (@ 142KVAR)
if you want to calculate by amp need following data
efficiency of motor, required P.F, KW,maganatising current
of motor,formula find in Electrical Machine Engineering

 Is This Answer Correct ? 9 Yes 2 No

kVAR=kVA X sinphi
SO, sin phi=(1-cos sq phi) underroot.
SO POWER FACTOR IS REQUIRED.

 Is This Answer Correct ? 7 Yes 3 No

Madhu pls explain what is tanphi1 and tanphi2????

 Is This Answer Correct ? 5 Yes 1 No

25 kvar = 32amps load taken

1000amps capacitor required to 500kvar

 Is This Answer Correct ? 5 Yes 1 No

250 Kvar Capacitor bank is required for 500Kw load
(i.e,625Kva).
This is because the capacitor rating for any load is equal
to 40% of Kva.

 Is This Answer Correct ? 7 Yes 5 No

plz identify your systems existing power factor and
targeted power factor which u want to improve, then apply
this formula
KW X (Tan phi 1 - tan phi 2)

 Is This Answer Correct ? 2 Yes 0 No

Reactive power (KVAR) is increase due to run inductive load.as a result power factor is lagging. so have to use capacitive power to reduce this inductive or reactive load. generally we have to use 63% capacitive load to remove the reactive load.i.e.

active power=500KW
so 60% of this will be=(60*500/100) = 300 KVAR

so we have to use 300KVAr capacitive capacitor bank to remove this reactive power .

 Is This Answer Correct ? 1 Yes 0 No

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