Applications :

• The cables are designed for long distance telecom links on optical fibres along railway tracks. The cables are suitable for installation directly in channels or buried.

Standards :

• SNCF CT 2242.6.1

 

Construction :

• Fibres : Singlemode optical fibres G652 coloured (6 or 12 per tube).
• Central Strength Member : Non-metallic central reinforcement (FRP).
• Tube : PBT polyester tubes containing fibres.
• Filling : Petroleum jelly with water-swelling yarns to provide longitudinal watertightness.
• Inner Sheath : Low density polyethylene.
• Armour : 0.25mm thick corrugated steel tape armour.
• Outer Sheath : Low density polyethylene.

Electrical Characteristics at 20 °C :

• Maximum Attenuation		G652
  @1310nm	dB/km	0.35
  @1550nm	dB/km	0.22
  Maximum Chromatic Dispersion
  Between 1260 and 1360nm	ps/(nm/km)	3.5
  Between 1530 and 1565nm	ps/(nm/km)	19
  Zero Dispersion Wavelength	nm	1310±11
  Zero Dispersion Slope	ps/(nm2.km)	0.09
  Numerical Aperture		0.14
  Point discontinuity	dB	0.1
  PMD (individual fi ber)	ps/km	0.2
  Maximum Cutoff Wavelength	nm	1260
  Cladding Diameter	um	125±1
  Core/Cladding Concentricity Error	um	≤0.5
  Cladding Non Circularity	%	≤1
  Coating Non Circularity	%	≤6
  Proof Test Level	Kpsi (GN/m2)	100 (0.7)
  Crush Resistance	N/cm	450
  Maximum Laying Tension	N	3000

Mechanical and Thermal Properties :

• Minimum Bending Radius : 310mm.
• Temperature Range : -40°C to +70°C (during operation); -10°C +70°C (during installation).

Dimensions and Weight :

 

Cable Code	No. of fibres	Nominal Sheath Thickness mm	Nominal Overall Diameter mm	Nominal Weight kg/km
RO2242-ML-C-9-Tn×Fn-SR-2Y(STA)2Y	1-36	1.5	14.5	260
RO2242-ML-C-9-Tn×Fn-SR-2Y(STA)2Y	48-72	1.5	16.5	300
RO2242-ML-C-9-Tn×Fn-SR-2Y(STA)2Y	80-144	1.5	22.0	510

   Tn: Number of tubes;    Fn: Number of fi bers in a tube

 

 

UV Resistant	Water Resistant		Buried in Ciround	Laid In Ducts	Zero Halogen IEC 60754-1/NF C20-454 EN 50267-2-1