BIRLA CABLE LTD.
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FIBRE OPTIC CABLES > UNDERGROUND DUCT > METALLIC > UNI-TUBE

4F-24F Double Sheath Uni‑Tube Underground
Steel Wire Armoured Optical Fibre Cable

Application

  • Suitable for Duct/direct buried Application
Ipsum

Typical Cross section of 24 Fibre

Cable Construction Details

  • Non‑metallic and anti‑buckling element FRP rod used at inner sheath
  • Loose buffer tubes fully filled
  • HDPE Inner sheath, Black Colour
  • Galvanized Steel Wire Armour over Inner Sheath
  • UV Stabilized, HDPE Outer sheath, Black Colour

Technical Characteristics

FIBRE COUNT DIAMETER (mm) Nominal WEIGHT (Kg./Km) Nominal TENSILE STRENGTH (N) BENDING RADIUS (mm) TEMPERATURE RANGE
(IEC 60794-1-2-F1)
Installation Operation Installation Operation Installation Operation
4F 12.0 210 2500 1500 15D 25D -20°C to +70°C -20°C to +70°C
6F 12.0 210 2500 1500 15D 25D -20°C to +70°C -20°C to +70°C
8F 12.0 210 2500 1500 15D 25D -20°C to +70°C -20°C to +70°C
12F 12.2 215 2500 1500 15D 25D -20°C to +70°C -20°C to +70°C
24F 12.5 220 2500 1500 15D 25D -20°C to +70°C -20°C to +70°C

Fibre & Tube Colour Coding

Blue Orange Green Brown Grey White Red Black Yellow Violet Pink Aqua
*For Fibre Count 12F We provide the above colour code
*For Higher Fibre count We provide contrast dot marking of above colour code

Special Features

  • Galvanized Steel wire amour provided excellent Crush & Impact Resistance.
  • Flexible buffer tubes provide easy fibre routing inside closure.
  • The Metallic Armour enables post installation cable locating.

Drum Length

  • 2000/ 4000meters ± 5%

Mechanical Characteristics

Kink Resistance (mm) (IEC 60794-1-2-E10) 15 x D, D = Cable Diameter
Impact Resistance (Nm) [IEC 60794-1-2-E4] Height 0.5 meters, Weight = 5 Kg, 3 Nos
Crush Resistance (N) (IEC 60794-1-2-E3) 4000 N [100 X 100 mm] for 60 sec
Repeated Bending [IEC 60794-1-2-E6] 10 Cycle, r = 20 X D, 5 Kg Load,
D = Cable Diameter
Water Penetration [IEC 60794-1-2-F5 B] 1 Meter Water Head, 3 Meters Cable Sample, 24 Hours [On Inner Sheath]