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TOL In Duct, Single Tube

TOL In Duct, Single Tube

  1. Outer sheath
  2. Hydrophobic gel
  3. Steel wire
  4. Corrugated steel tape armor
  5. Loose tube
  6. Hydrophobic gel
  7. Optical fiber


Optical cable is designed for installation in cable ducts, in pipes, in blocks, in trays, in tunnels, in headers, on bridges and skyways, between and inside buildings.

Technical characteristics

Parameter Value
Number of optical fibers Up to 12 Up to 16 Up to 24
Tensile strength, kN 2,7
Cable diameter, mm 7,3 7,5 7,8
Cable weight, kg/km 70,5 72,6 75,7
Bending radius, mm 109,5 112,5 117,0
Crushing force, kN/sm 0,5
Operating temperature -50°С…+70°С
Installation temperature -30°С…+50°С
Transportation and storage temperature -60°С…+70°С
Minimum bending radius Not less than 15 cable diameters
Factory length, km 4

Technical characteristics of optical fiber

Type of optical fiber Corning SMF 28 Ultra Corning SMF28e+BB
ITU-T recommendations G.657A1 G.652D G.657A1 G.652D
Deviation from the concentricity of the core, microns, not more  0,5
Diameter of fiber sheath, microns 125±0,7
Deviation from the roundness of the sheath, %,  not more 0,7
The diameter of the protective covering, microns 242±5
Maximum attenuation at wavelength 1310 nm 0,32 0,34
Maximum attenuation at wavelength 1550 nm 0,18 0,20

Full name example

Optical cable TOL-P-24Y (1x24) 2.7kN

The cable consists of a single tube core with freely laid fibers are twisted. The free space is filled with a hydrophobic gel in the optical loose tubes and in the core. The core is covered with corrugated steel tape armor and a flame redundant while single installation sheath. Two fiberglass rods are diametrically laid, which perform the functions of strength elements.

Download the TOL cable specification in PDF

Download the TOL cable certificates and declarations in PDF