CT2242 Outdoor Single Mode Armoured Trackside Optical Fiber Cables
Application
The cables are designed for long distance telecom links on optical fi bres along railway tracks. The cables are suitable for installation directly in channels or buried.
Standard
- SNCF CT 2242.6.1
Cable Construction
 |
 |
CT2328 Type (Main Cables)
- Fibres: Singlemode optical fibres G652 coloured (6 or 12 per tube).
- Central Strength Member: Non-metallic central reinforcement (FRP).
- Tube: PBT polyester tubes containingfibres.
- 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℃
| 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℃ to +70℃ (during operation); -10℃ +70℃ (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 |
