Fibre-optic cable for underground laying in soils of all categories, in water when crossing rivers and swamps, modular design (optical tube made of polymer material PBT, inside which optical fibres are located in the medium of hydrophobic filler) with the number of fibres from 2 to 48, with outer sheath made of polyethylene, non-combustible, with an armour coating made of galvanised steel wire, with an intermediate sheath made of polyethylene, with a central power element made of polymer material (PBT), inside which optical fibres with zero excess length are located in the medium of hydrophobic filler or dielectric glass fibre-reinforced plastic rod.
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