... this standard are as follows: U0/U(Um) =0.6/1(1.2)-3.6/6(7.2)-6/10 ... 35kV In the voltage designation of cables U0/U(Um): * U0 is the rated power frequency voltage ... between conductors for which the cable is designed; * Um is the maximum value of the "highest system voltage" ... Marking: According to the customers' requirements7). Nominal cross-sectional areas:1.5mm2, 2.5mm2, 4mm2, 6mm2, 10mm2, 16mm2, 25mm2 ...