CI vol 2 prob #1 Single Phase MVA method?

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Jilloham

Jilloham

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Can the MVA method be used on single phase circuits? I got #1 on volume 2 of complex imaginary wrong.

Single phase gen, 5kv, 11MVA, j.39pu sub transient impedance... Find fault current

 
I found my own answer but thought I would share in case someone came across this thread. Yes, MVA method can be used on single phase. :) answer for above question is :

MVAsc=11 MVA/.39= 28.2 MVA.

I=28.2MVA/5KV= 5641A

 

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