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A broad range of optical cables for either railways or subways infrastructure can be offered for all types of installations : ducts, troughs or aerial installation, including fire non propagating and even fire resisting versions.
Nexans multipair hybrid energy/telecom cables have a number of important features.
- They guarantee electromagnetic immunity for critical telecommunications from catenaries and current rails.
- They are designed to survive along the tracks, resisting extreme temperatures, humidity, oil and ultraviolet light.
They have high dielectric strength, and come in Halogen-Free, Fire-Retardant versions for tunnels, stations and platforms. Nexans’ signaling and control cables display exceptional performance characteristics because of a reliable manufacturing process and appropriate sheathings for the railway environment.
And more and more applications require combinations of both optical and copper conductors in hybrid constructions, where the railways operator can profit of the normal electromagnetic and mechanical protection of the copper cables to integrate the necessary fibres (circular hybrid cables) or combine both technologies in a form “8” shaped cables (see DuoTrack example).
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