Conductors for overhead lines - Coated or cladded metallic wire for concentric lay stranded conductors

IEC 63248:2022 specifies the properties of wires in the diameter range of, but not limited to, 1,25 mm to 5,50 mm. This document is applicable to coated or cladded metallic wires before stranding used either as concentric lay overhead stranded conductors, or in the manufacture of cores for concentric lay overhead stranded conductors, for power transmission purposes.

The various wire types and their designations are listed in Table A.1. For calculation purposes the values listed in Annex B are used.

This first edition cancels and replaces the first edition of IEC 61232 published in 1993 and the first edition of IEC 60888 published in 1997. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous editions of IEC 61232 and IEC 60888:

a) wire designations have been modified and grouped;

b) wires with zinc coating class 2 were removed;

c) new wire designations have been added;

d) aluminium-clad FeNi36 wires have been added;

e) advanced zinc-aluminium alloy coated steel wires have been added.