A 15 kW 230 V 1725 rmin 60 Hz single phase pump motor has th
A 1.5 kW, 230 V, 1725 r/min, 60 Hz single phase pump motor has the following characteristic:
Full-load current: 12 A
Efficiency: 76%
Power factor: 78 %
a. Calculate the active and reactive power absorbed by this machine when it operates at full load
Solution
Motor input =230*12va
=230*12*0.78 w
Motor output=input*e efficiency
=230*12*0.78*0.76
Active power absorbed=1.636kw
Reactive power. =230*12*0.76*0.628
=1.315kvar
