IEC 60502-SER Ed. 1.0 b:2018
Power cables with extruded insulation and their accessories for rated voltages from 1 kV (<i>U</i><sub>m</sub> = 1,2 kV) up to 30 kV (<i>U</i><sub>m</sub> = 36 kV) - ALL PARTS
standard by International Electrotechnical Commission, 02/20/2018