Fiber-optic cable OKK for suspension on urban lighting pillars.
OKK is designed for construction of overhead power lines in points with maximal electrical field potential up to 25 kV; between buildings.
Loose tube cable. Central strength member is made of fiber reinforced plastic (FRP) rod. Polymer tubes and plastic fillers are SZ-stranded around central strength member. Optical fibers are placed inside polymer tubes. Interstice inside and between polymer tubes is filled with hydrophobic filler. Cable core is wrapped by yarns. PET-tape is imposed on the cable core. PE – jacket is extruded over the core. An armour from high modulus aramid layer is formed around single jacketed cable with outer jacket of high density polyethylene extruded over the armour in case of electrical field potential up to 12 kV. In case of electrical field potential 12-25 kV outer jacket is made of track resistant polyethylene.
On customer’s request cable design can have following options:
|Number of fibers||2-40||42-60||62-96||98-144|
|Number of polymer tubes||5||5||6||6|
|Number of optical fibers in a tube||up to 8||up to 12||up to 16||up to 24|
|Long-term permissible tensile force , kN||20||20||20||20|
|Nominal overall diameter, mm||13,5||14,4||14,5||15,6|
|Total mass of cable with polyethylene jacket, kg/km||141||162||167||190|
|Total mass of cable with track resistant PE jacket, kg/km||151||172||177||201|
|Temperature range of operation, С°||-60… +70|
|Temperature range of installation, С°||-30… +50|
|Transport, storage, С°||-60… +60|
|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 3,5 kN to 85,0 kN|
|Crush strength||not less than 3 kN/100 mm|