Use the link on the left to access our cable sizing application. Manage and size all your cables, from low voltage to 33 kV.
Calculation of cable 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 impedance calculated above is in complex form. The real part of the impedance gives the resistance and the imaginary part the reactance.
Currently, we do not calculate capacitive reactance. This will likely be added as the application grows and develops the need for this calculation.
Cable Cores and Phase
Within myCableEngineering, the type of end load (regarding phases) a cable can be used on is dependant on the number of cores.
* there may be additional variations within the application
Note: for armoured cables, the armouring is always considered as part of the earth return path. If the user opts to ignore cable armour, the equations for unscreened cable equations are used. The effect of any return path through the earth itself is considered. If multiple spare cores are available, only one can be used as an earth return path. For any spare core being used as an earth conductor, its impedance is added in parallel with that obtained from the IEC equations.