a 240v line voltage, 400Hz

lukus

 

how do i determine the power lost in the 3 core supply cable as percentage of the total power supplied?

Calculate the power lost in the cables and the total power supplied by the source and divide the first by the last. Then multiply by 100 to get the percentage.

How do i measure the total real power supplied by source?

Find the total impedance of one phase, load + cable. Then find the total current through the phase and thus calculate the apparent power. Then multiply it by the power factor (cos(impedance angle)) to find the real power.

How do i calculate reactive power supplied by source?

Find apparent power and then multiply it by sin(impedance angle).
thanks