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.(adsbygoogle = window.adsbygoogle || []).push({});

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 V_{p}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

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Transformer Short Circuit Calc

**Physics Forums | Science Articles, Homework Help, Discussion**