EVS-EN 62420:2008

This International Standard specifies the electrical and mechanical characteristics of concentric lay stranded overhead electrical conductors, containing one or more self-supporting aluminium or aluminium alloy layer(s) as depicted in Figure 1, made of combinations of any of the following metal wires: a)  hard-drawn aluminium as per IEC 60889, designated A1; b)  aluminium alloy type A or B as per IEC 60104, designated A2 or A3; c)  thermal resistant aluminium alloy type as per IEC 62004, designated AT1, AT2, AT3 or AT4; d)  regular strength steel as per IEC 60888, designated S1A or S1B; e)  high strength steel as per IEC 60888, designated S2A or S2B; f)  extra-high strength steel as per IEC 60888, designated S3A; g)  aluminium-clad steel as per IEC 61232, designated 20SA, 27SA, 30SA or 40SA.