IEC 60502-SER Ed. 1.0 b:2023
IEC 60502-SER Ed. 1.0 b:2023 Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) - ALL PARTS
standard by International Electrotechnical Commission , 02/01/2023