Can this approximation be implemented on MV grid (10 kV/35 kV)?
Topic on Talk:Isc at the receiving end of a feeder as a function of the Isc at its sending end
From Electrical Installation Guide
The theorical methodology of short circuit current assesmsent is not linked to voltage (busbar). However as soon as the calculation introduces factors related to cables, the capacitance and reactance change. The cables are linked to the technology and are linked to the voltage. The values mentioned for LV cables on the mentioned table G42 are not applicable to MV cables.
