The function is defined for feeding cables and service cables. It can be used for all voltage levels, but only for a complete calculation. This means that if a 0.4 kV start object is used, the whole network will be calculated between this point and the secondary substation feeding the object. (The feeding object will per default go to the upper side bus bar of the substation) The whole network fed by that substation will be included in the calculation.

 

If instead a MV-object is selected (for instance a 10 kV delivery point), the whole network from the input in the primary substation down to service cables will be calculated, i.e. the medium voltage + the underlying low voltage network.

 

Find a line/connection point, right-click and select Network calculation > Predefined calculation.

 

Assuming that the function is properly set up and a reference calculation has been done (and includes the affected feeding point),  the calculation process will be done automatically. If there are no start values among the reference calculations, a start form will be shown for completation.