20MVA ,10MVA power transformer

hi dear

to calculate the active power , there are formula as the following:-

P=S*cos Ø

where P= active power (Watt)

S=apparent power(VA)

Cos Ø= power factor (P.F.)(the angle bet.the cuuent & voltage)

assume the P.F.=0.85

then P=20*0.85

P=17 MW for 20MVA

thanks sir.......

thank u very much.............

there is no role of Voltage what we have to step up or step down.

yes...whatever be the voltage, and whetever be the mode (Stepup/stepdown),...the rated MVA of the transformer can be used to find kw rating.

Cheers.