Version: 10.2.1c and 10.2.1.c SP3 |
Appendix > Secondary Circuit Analysis Calculations > 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).