kVA to watts calculation formula
P(W) = 1000 × S(kVA) × PF
The real power P in watts (W) is equal to 1000, multiplied by the apparent power S in kilovolt-amps (kVA), multiplied by the power factor PF.
W = 1000 x kVA x PF
watts = 1000 x kilovolt-amps x PF
Power (S) = 2,5kVA
PF = 0,7
Power (P) = 1000 x 2,5kVA x 0,7 = 1750W