How to perform short-circuit calculations, part 2.

Performing short-circuit calculations requires an understanding of various system components and their interaction.In Part 1 of this article, which was featured in the June 1995 issue, we discussed the types of networks to calculate short-circuit current (i.e., symmetrical rms current). In Parts 2 and 3 (April 1996 issue), we'll describe the per-unit method of performing short-circuit calculations

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FELIX JR. (not verified)
on Sep 25, 2012

I JUST WANT TO ASK WHAT IF I CHANGE THE 1OMVA BASE INTO ANOTHER MVA BASE LIKE FOR EXAMPLE 300MVA, WILL THE RESULTING FAULT CURRENTS USING THIS ALTERNATE 300MVA BASE VALUE BE DIFFERENT THAN THE VALUES OBTAINED WHEN ORIGINALLY USING THE 10MVA BASE AS YOU HAVE SHOWN IN YOUR TOPIC EARLIER ? IN MY OPINION THESE SHOULD NOT BE OTHERWISE THE CALCULATION RESULTS WILL BE ERRONEOUS, THE NEW FAULT CURRENT RESULTS SHOULD BE IDENTICAL WITH THE FORMER.

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