 |
||||||||||
 |
Railway Cables |  |
||||||||
|
||||||||||
|
||||||||||
ST2513/CT2243 Outdoor Single Mode Unarmoured
Trackside Optical Fiber Cables
Application
The cables are designed for long distance telecom links on optical fibres along railway tracks. The cables are
suitable for pulled through ducts or laid in channels.
Standards
SNCF ST 2513-99
Construction
Fibres
Singlemode optical fibres G652 coloured (6 or 12 per tube).
Tube
PBT polyester tubes From 12 to 72 OFs: 1 to 6 tubes; 144 OFs: 12 tubes.
Central Strength Member
Non-metallic central reinforcement (FRP).
Filling
Petroleum jelly + water-swelling yarns.
Reinforcement
Water-swelling aramid fi bres.
Sheath
PE sheath.
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 | 300 |
| Maximum Laying Tension | N | From 12 to 72 FO: 2500;144 FO: 3000 |
Mechanical and Thermal Properties
Minimum Bending Radius: from 12 to 72 FO: 230mm; 144 FO: 340mm.
Temperature Range: -30℃ to +60℃ (during operation);
-10℃ +60℃ (during installation)
Dimensions And Weight
| Cable Code | No. of fi bres | No of Tubes x No of Fibers/Tube |
Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
| RO2513-ML-B-9-1×12-F-2Y | 12 | 1 tubes of 12 OF | 1.5 | 11.6 | 112 |
| RO2513-ML-B-9-3×12-F-2Y | 36 | 3 tubes of 12 OF | 1.5 | 11.6 | 112 |
| RO2513-ML-B-9-6×6-F-2Y | 36 | 6 tubes of 6 OF | 1.5 | 11.6 | 112 |
| RO2513-ML-B-9-6×12-F-2Y | 72 | 6 tubes of 12 OF | 1.5 | 11.6 | 112 |
| RO2513-ML-B-9-12×12-F-2Y | 144 | 12 tubes of 12 OF | 1.5 | 17.0 | 225 |