1. Drivers
1.1 Metals used and conductor construction
Bare conductors, used in the construction of overhead lines, are cables made of round wires or, in exceptional cases, trapezoidal or Z-shaped wires.
Low-resistivity conductive metals are in short supply for these cables. The only ones currently used are high-purity aluminum in its hard-wrought form, and an aluminum alloy called almelec. The characteristics of these metals have changed little in recent decades, and their maximum operating temperature cannot exceed 100°C. However, certain conductive metals, such as annealed aluminum, or certain alloys should enable higher operating temperatures, of the order of 200 C, and are currently being tested
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Drivers
Guard cables
Bibliography
In Engineering Techniques
Standards
The Afnor catalog can be consulted online: http://www.afnor.fr
- Conductors for overhead lines – Conductors with circular strands, stranded in concentric layers. Classification number : C34-125 - NF EN 50182 - déc. 2001
- Conductors for overhead lines – Aluminum-magnesium-silicon alloy wires. Classification number : C34-112 - NF EN 50183 - janv. 2001
- Conductors for overhead lines – Zinc-plated...
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