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