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