ParameterConductor materialCable section"Highest voltage for equipment Um "Rated Voltage U0 "Lightning impulse withstand voltage"Rated continuous currentRated short-time current IR Duty cyclesOperating time in a dayOperating days in a yearDesign lifetime"Maximum exceptional short- circuit symmetrical current""Current peak in all conditions (rating/fault)"Nominal frequencyOperating frequencyNumber of phases"Number of parallel cables per phase"