RUS

Optical cable with armor of galvanized steel wire KC-OKB

The KC-OKB cable is intended for manual or mechanized installation in soils of all categories, except soils that are subject to freezing deformations, when there are high requirements for resistance to mechanical loads, in sewage systems, protective pipes, blocks, collectors. For indoor and outdoor installation (in the “nf” version).
Structure
  1. Optical fiber;
  2. Intramodule compound (thixotropic gel);
  3. Optical loose tube (PBT – polybutylene terephthalate);
  4. Central strength element (FRP fiberglass rod or galvanized steel wire);
  5. Water-blocking element (water-swellable tape or intermodule gel);
  6. Inner polyethylene sheath in the “nf” version made of flame-retardant low-smoke halogen-free compound;
  7. Armor (galvanized steel wire);
  8. Outer light-stabilized polyethylene sheath. In the “nf” version the outer sheath is made of a polymer that does not propagate burning when laid single.

    For cables in the “nf” version, which are flame-retardant when installed in bunches, the category of flame retardation is indicated in brackets: nf(A), nf(B), nf(C), nf(D).

    Types of the sheath according to fire hazard indicators are defined by the following indices in the identification markings:
    LS (Low Smoke) – reduced smoke emission;
    FR (Fire Resistant) – fire resistance;
    ZH (Zero Halogenic) – no halogen emission during combustion;
    HF – no emission of corrosive gaseous products during combustion and smoldering;
    LT – low toxicity of combustion products

  9. Core-filler.
01
Optical fiber
02
Intramodule compound (thixotropic gel)
03
Optical loose tube (PBT – polybutylene terephthalate)
04
Central strength element (FRP fiberglass rod or galvanized steel wire)
05
Water-blocking element (water-swellable tape or intermodule gel)
06
Inner polyethylene sheath in the “nf” version
07
Armor (galvanized steel wire)
08
Outer light-stabilized polyethylene sheath
09
Core-filler
01
02
03
04
05
06
07
08
09
  1. Optical fiber
  2. Intramodule compound (thixotropic gel)
  3. Optical loose tube (PBT – polybutylene terephthalate)
  4. Central strength element (FRP fiberglass rod or galvanized steel wire)
  5. Water-blocking element (water-swellable tape or intermodule gel)
  6. Inner polyethylene sheath in the “nf” version
  7. Armor (galvanized steel wire)
  8. Outer light-stabilized polyethylene sheath
  9. Core-filler

Physico-mechanical and operational characteristics of cable

Parameters Value
Number of optical fibers in cable 2 to 144
Number of lay elements of the core, pcs от 4 до 12
Nominal outer diameter, mm 13.5 and more
Static tensile load, kN 5.0 to 70.0
Dynamic tensile load, kN 6.0 to 80.0
Short-term crushing load, kN/cm 0.4
Minimum bending radius, mm
20 cable diameters
Operating temperature, °С -40 to +60
Storage and transportation temperature, °С -50 to +60
Installation temperature, °С -10 to +50

*According to Customer’s requirements the color sequence of loose tubes and fibers can be different.

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