Fault Calculation

The Fault calculation determines the amount of current that flows through a short circuit. It is displayed in the Transformer & Service Summary.

The fault current magnitude |IFAULTi| at each bus i is computed as


where Vo is the voltage at the transformer primary bus, ZXFR is the transformer impedance, and ZPATH is the total impedance of the conductor path joining bus i to the transformer secondary bus (all values in per unit).

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