Answer / g c a

First to calculate current, we should know the PF of
load... without knowing the load we can't tell load
current.........

Formulais I = KVA / 1.73 * 415 * PF

Answer / sunil bhatt

Formula is here

kva X pf = volt X current
for example

500kva x 0.8 pf = 44ov X Amp

I (amp) = 500000 x 0.8 / 440v
I (amp)= 400000 /440
I (amp)= 909 amp

So, Put your available voltage & system power factor and
calculate your maximum out put current.

Answer / kola raju

The output current rating depends upon the load pf only
for example your pf is 1.0 then output is p=v*i*pf =
500kva/(415*1.0)=696 amps
if your load pfi s 0.8 500kva/(415*.8)=555 amps only

Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV this type of ratio. why cant we use other voltage ratio like 54KV / 99KV et.,

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