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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