3 phase circuit help

Discussion in 'General Electronics Chat' started by lukus08, Mar 14, 2009.

  1. lukus08

    Thread Starter Active Member

    Mar 14, 2009
    34
    0
    a 240v line voltage, 400Hz

    lukus
     
    Last edited: Mar 16, 2009
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    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.

    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.

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