Fiber optic cable OKB-T armoured by galvanized steel wires for direct burial installation.
Cable is designed for installation in grounds of 1-3 groups, cable ducts, tunnels in case of high requirements of crush strength. OKB-T from flame retardant materials is designed for installation according to exclusive standards of fire safety.
Cable core is a tube. Optical fibers are placed inside the tube. Interstice inside cable core is filled with hydrophobic filler. An armour of galvanized steel wires is formed around cable core. Interstice between cable core and armour is filled with hydrophobic filler. An additional jacket of high density polyethylene is extruded over the armour. In case of exclusive standards of fire safety cable jacket is made of flame retardant halogen free (HF) compound. In case the number of fibers exceeds 12 ring marking is used. and/or bundling with identification yarns.
On customer’s request cable design can have following options:
|Number of fibers||2-16||18-24||26-36||38-48|
|Nominal overall diameter, mm||9,9||10,2||11,2||11,4|
|Total mass of cable with polyethylene jacket, kg/km||156||166||199||209|
|Total mass of cable with flame retardant (HF) jacket (kg/km)||183||194||230||241|
|Temperature range of operation, С°||-40… +60|
|Temperature range of installation, С°||-10… +50|
|Transport, storage, С°||-50… +50|
|Minimal bending radius||not less than 20 diameters|
|Guarantee exploitation||2 years after putting in operation, not more than 2, 5 years from shipping date.|
|Tensile strength||from 1,5 kN to 20 kN|
|Crush strength||from 3,0 to 7 kN/100 mm|