|The SCpower program was written in an HP48G+; it also runs on the HP49G. It calculates three phase and one phase to ground (1LG) short circuit currents at faulted buses as well as fault currents that circulate through the power network. It uses 100 MVA as base power. It does not yet calculate LL or 2LG faults, nor does it take into account fault resistance. It creates and manipulates the positive and zero sequence impedance matrices of the power system.