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DPD Direct Buried Loose Tube Double Jacket Dielectric Armor

DPD Direct Buried Loose Tube Double Jacket Dielectric Armor

  1. Outer sheath
  2. Fiberglass armor
  3. Hydrophobic gel
  4. Intermediate PE sheath
  5. Hydrophobic gel
  6. Optical loose tube
  7. Hydrophobic gel
  8. Optical fiber
  9. Central strength element

Destination

Optical cable is designed for installation in ground including swamps and shallow non-navigable river, in ducts, in pipes, in blocks, in trays, in tunnels, in headers, on bridges and skyways, between and inside buildings, for suspension on the supports of overhead communication lines towers, contact network and railways auto-blocking, power lines, lighting columns, power facilities, as well as with increased requirements for resistance to external electromagnetic influences.

Technical characteristics

Parametr Value
Number of optical fibers Up to 16 Up to 32 Up to 48 Up to 64 Up to 72 Up to 96 Up to 144
Tensile strength 7 kN
Cable diameter, mm 12,4 12,6 13,0 13,2 14,4 14,4 17,6
Cable weight, kg/km 136,1 139,1 147,9 151,1 179,6 179,6 292,9
Bending radius, mm 186 189 195 198 216 216 264
Tensile strength 16 kN
Cable diameter, mm 14,6 14,8 15,2 15,4 16,2 16,2 17,6
Cable weight, kg/km 209,2 212,9 225,2 227,8 248,4 248,4 292,9
Bending radius, mm 219 222 228 231 243 243 264
Tensile strength 20 kN
Cable diameter, mm 15,6 15,8 16,2 16,4 17,0 17,0 17,6
Cable weight, kg/km 245,4 249,3 264,5 268,6 282,1 282,1 292,9
Bending radius, mm 234 237 243 246 255 255 264
Crushing force, kN/sm 0,4
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 DPD-P-48Y (6x8) 16kN

The cable consists of a loose tube core with a central strength element made of a dielectric around which optical loose tubes 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 intermediate PE sheath. The intermediate PE sheath is spirally covered with the dielectric rods armor. The free space is filled with a hydrophobic gel between rodes. The armor is covered with HDPE sheath.  

Download the DPD cable specification in PDF

Download the DPD cable certificates and declarations in PDF