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 |
