IEC 63248:2022,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.
IEC 63248 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.
IEC 63248:2022 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.
