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Transformer Short Circuit Calc

  1. Apr 27, 2012 #1
    Ok i've read a lot of articles and seen a lot of different ways of calculating the short circuit current at the transformer terminals.

    So i'm going to apply my own intuition and see if I can arrive at the correct value if someone could please confirm my answer.

    6.6kV/400V
    3 Phase
    10MVA
    8%Z

    By definition %Z is the % of Vp that causes FLC under short circuited conditions.

    FLC = 10000000/(1.732*400) = 14434A

    so 8% 6600V = 528V

    6600/528 = 12.5

    So 12.5*11434= 180kA

    Is this correct? I know I've simplified it and rounded generously but I'm just trying to get the general principle down.

    Thanks
    Dan
     
  2. jcsd
  3. Apr 27, 2012 #2
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