Medium Transmission Line DefinitionA medium transmission line is defined as a transmission line with a length between 80 km (50 miles) and 250 km (150 miles).A medium transmission line is defined as a transmission line with an effective length more than 80 km (50 miles) but less than 250 km (150 miles). Unlike a short transmission line, the line charging current of a medium transmission line is appreciable and hence the shunt capacitance must be considered (this is also the case for long transmi