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Applications
Optical fibers are mainly used to transmit information over long distances and with high bit rates. The light signal propagates along the core and the signal is reflected on the surface between the core and the cladding. The FOH cable type is based on a loose tube design, in which the fibers are protected. It contains a maximum of 24 monomode or multimode fibers. This FOH//LC/PVC/SWA/PVC cable designed with a lead cover, a galvanized steel wire armour and a special PVC outer sheath makes it very well adapted to underground use in all raffineries.
Design
Optical fibers
Jelly
Tube
Ripcord
Reinforcing watertight glass yarns
Inner sheath:
Low Smoke Zero Halogen (LSZH)
Lead cover
Sheath (intermediate sheath):
Polyvinyl Chloride (PVC)
Armour:
Galvanised steel wires (SWA)
Protective sheath:
Polyvinyl Chloride (PVC)
Especially designed to resist aliphatic hydrocarbons
Colour: black
UV resistant
Marking
NEXANS 279 (GIGAlite) - FOH/LC/PVC/SWA/PVC - UT Nber and type of fibers + meter marking
Standards
IEC 794-1-E1
IEC 794-1-E3
IEC 794-1-E4
IEC 794-1-F1
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