International Electrotechnical Commission <br/><br/>
IEC/TR: 60909-4(Ed-1)-2000-07; Short-circuit currents in three-phase a.c. systems- Part 4: Examples for the calculation of short-circuit currents 

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 - Geneva  International Electrotechnical Commission  2000 
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<br/><br/> Downloaded from the IEC website 
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