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clc;
clear;
mvan=6800e6;
v=132e3;
mvac=200e6;
mvae=mvan-mvac;
n=mvan/(sqrt(3)*v);
e=mvae/(1.681*v);
e=fix(e/10)*10;
n=fix(n/10)*10;
printf("normal fault current=%f/_-90 kA\nEffective fault current=%f/_-90 kA",n/1e3,e/1e3);
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