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Direct buried


Optical fibre cable with cental tube for buried installation


The optical fibre cables of this type are designed for installation directly in the grounds of all categories. They can be buried in the ground, used for rivers crossings, installed in the ducts, over the bridges and overpasses. 

Special characteristics of optical fibre cables:

Fire-resistant — IKBN… (for the installation in tunnels, sewer ducts, inside the buildings);

Improved moisture protection (with plastic-coated aluminium tape) — IKBZ… .

Double armour-coating of steel wires  — IKB2…–М… This construction can be installed in the grounds of all categories (when low-temperature deformations are possible).

Cable type IKB…Т…
Construction type central tube
Maximum number of optical fibres in the cable  48
Number of tubes 1
Minimum outer diameter, мм 8,7
Minimum weight from, kg/кm 125
Minimum long term tension, кN 2,5
Minimum crush resistance, kN/cm 0,4
Minimum allowed impact resistance, J 10
Minimum bending radius 20 Ø OD
Operating teperature range, °С from -50 to + 50
Minimum Installation temperature, °С -30


IK – INTEGRA-CABLE optical fibre cable
B – armoured (stranded steel wires)
N – flame-proof outer sheath
Т – Central tube
А – Optical fibre type (single-mode, ITU-T G.652.С(D))
12 – number of optical fibres in the cable
6.0 – maximum tension allowed, kN

  • The operating temperature range can be extended from –60°С to +70°С.
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