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.
SNCF ST 2513-99
Electrical Characteristics at 20℃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.
| 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 |
Minimum Bending Radius: from 12 to 72 FO: 230mm; 144 FO: 340mm.
Temperature Range: -30℃ to +60℃ (during operation); -10℃ +60℃ (during installation)
| 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 |
|---|---|---|---|---|---|
| BROB3-ML-B-9-1×12-F-2Y | 12 | 1 tubes of 12 OF | 1.5 | 11.6 | 112 |
| BROB3-ML-B-9-3×12-F-2Y | 36 | 3 tubes of 12 OF | 1.5 | 11.6 | 112 |
| BROB3-ML-B-9-6×6-F-2Y | 36 | 6 tubes of 6 OF | 1.5 | 11.6 | 112 |
| BROB3-ML-B-9-6×12-F-2Y | 72 | 6 tubes of 12 OF | 1.5 | 11.6 | 112 |
| BROB3-ML-B-9-12×12-F-2Y | 144 | 12 tubes of 12 OF | 1.5 | 17.0 | 225 |
