scope:

This International Standard specifies the electrical and mechanical characteristics of round wire concentric lay overhead electrical stranded conductors made of combinations of any of the following metal wires:

a) hard-drawn aluminium as per IEC 889 designated Al*;

b) aluminium alloy type B as per IEC 104 designated A2*;

c) aluminium alloy type A as per IEC 104 designated A3* (and when applicable to the following cores, as per IEC 888);

d) regular strength steel, designated S1A or S1 B, where A and B are zinc coating classes, corresponding respectively to classes 1 and 2;

e) high strength steel, designated S2A or S2B;

f) extra high strength steel, designated S3A.

The conductor designations included in this standard are:

Al, A2, A3, Al/S1A, Al/S1B,

Al/S2A, Al/S2B, Al/S3A,

A2/S1A, A2/S 1 B, A2/S3A,

A3/S 1 A, A3/S 1 B, A3/S3A, Al /A2, A1 /A3.