Railway Cables

K209B LSZH Armoured Optical Fiber Cables

Application

The cables are designed for long distance telecommunication and using optical fibres in urban railways infrastructure. These low smoke halogen-free cables are laid on hooks, pulled through ducts or cable trays.

Standards

● RATP K209B or RATP K209A

Construction

Compact Tube
6 or 12 singlemode optical fibres G652 or multimode fi bers assembled under thermoplastic “peelable” skin. Tube diameter: 1mm.

Filling
Water-swelling yarns.

Tube
Thermoplastic.

Peripheral Strength Member
Water-swelling glass yarns.

Armour
Corrugated steel tape armour 25/100.

Sheath
LSZH.

Optional

K209A Type: For K209A type, the cables have loose tubes with 6-12 fi bers, steel wire strand as central strength
member, glass yarn reinforced, incorporating a corrugated steel tape armour and an outer UV stabilized LSZH jacket.

Electrical Characteristics at 20℃

Optical & Geometrical Properties for Single Mode Fibers

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
3000

Optical & Geometrical Properties for Multimode Fibers

 
50/125
62.5/125
Maximum Attenuation
@850nm
dB/km
≤2.5
≤3.0
@1300nm
dB/km
≤0.7
≤0.8
Maximum Chromatic Dispersion
@850nm
MHz*km
≥500
≥200
@1300nm
MHz*km
≥800
≥500
Zero Dispersion Wavelength
nm
1310
1310
Numerical Aperture
-
0.20±0.015
0.275±0.015
Core Diameter
um
50±3
62.5±3
Cladding Diameter
um
125±2
125±2
Core/Cladding Concentricity Error(Offset)
um
≤1.5
≤1.5
Coating-Clad Concentricity Error(Offset)
um
≤8
≤8
Core Non-Circularity
%
≤6
≤6
Cladding Non-Circularity
%
≤2 1
≤2 1
Coating Diameter
um
245±10
245±10
Proof-Test Level
Kpsi (GN/m2)
100 (0.7)
100 (0.7)

Mechanical and Thermal Properties

Minimum Bending Radius:20×OD
Temperature Range: -40℃ to +60℃ (during operation); -10℃ +60℃ (during installation)

Dimensions And Weight

K209A

Cable Code
No. of
fibres
Distribution
Nominal
Sheath
Thickness
mm
Nominal
Overall
Diameter
mm
Nominal
Weight
kg/km
RO/K209A-ML-C-9-TnxFn-SR-(STA)H
1-36
6 fi bre per tubes
1.8
12
190
RO/K209A-ML-C-9-TnxFn-SR-(STA)H
42-72
6/12 fi bre per tubes
1.8
13.5
230

Tn: Number of tubes; Fn: Number of fi bers in a tube

K209B

Cable Code
No. of
fibres
No of Tubes x No of
Fibers/Tube
Nominal Sheath
Thickness
mm
Nominal Overall
Diameter
mm
Nominal
Weight
kg/km
Singlemode Fibres From 6 to 36 OF – G652
RO/K209B-ML-C-9-2x6-F-(STA)H
12
2 tubes of 6 OF
1.8
13
112
RO/K209B-ML-C-9-4x6-F-(STA)H
24
4 tubes of 6 OF
1.8
13
112
RO/K209B-ML-C-9-6x6-F-(STA)H
36
6 tubes of 6 OF
1.8
13
112
Singlemode Fibres From 48 to 72 OF – G652
RO/K209B-ML-C-9-8x6-F-(STA)H
48
8 tubes of 6 OF
2.5
15.5
230
RO/K209B-ML-C-9-6x12-F-(STA)H
72
6 tubes of 12 OF
2.8
15.5
230
Multimode Fibres From 6 to 36 OF – 50/125
RO/K209B-ML-C-9-1x6-F-(STA)H
6
1 tubes of 6 OF
1.8
13
112
RO/K209B-ML-C-9-2x6-F-(STA)H
12
2 tubes of 6 OF
1.8
13
112