Calculation of impedance is reasonably involved. Other notes give an insight into the individual calculations. With myCableEngienering, the calculation will typically follow the following procedure
Positive and zero sequence impedances calculated above, are in complex form. The real part of the impedance gives the resistance and the imaginary part the reactance.
Current we do not calculate capacitive reactance. This will likely be added as the application grows and develops the need for capacitive reactance.