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Railway Cables
RAILSIG/RAILOPTICS/RAILDATA/RAILCOX Railway Telecom Cables
K20 & L120 LSZH Armoured F/FTP Cat6 Cables
Application
K20 & L120 LSZH Armoured F/FTP Cat6 Cables are designed for high speed data transmissions, and are
suitable for installations in cable trays or on hooks.
Construction
Conductors： Class 1 AWG23 solid copper conductor (for K20 cable); 0.6mm annealed copper conductor (for L120
cable).
Insulation： Solid polyethylene (for K20 cable); Foam skin (cellular PE + solid PE) (for L120 cable).
Cabling Element： Two conductors are twisted together to form a pair (for K20 cable); Four conductors are
twisted together to form a quad (for L120 cable).
Core Wrapping (for L120 cable)： Non-hygroscopic plastic tape with overlapping.
Individual Screen (for K20 cable)： Alu/polyester shield on each pair.
Overall Screen： Alu/polyester shield.
Drain Wire: Tinned copper drain wire, 0.5mm nominal diameter.
Inner Sheath (for K20 cable): LSZH.
Armour (for K20 cable): Galvanized steel braid armour.
Outer Sheath: LSZH.
Optional:
Armoured L120 Cables: Tinned copper braid armoured cables can be offered upon request.
Reference Standards
RATP CAT6-K20 (for K20 cable)
FRANCE TELECOM S31-10/20 & NF C 93.531-6/7 (for L120 cable)
Electrical Characteristics at 20℃
| Nominal Conductor Diameter | mm | 0.56 (K20) | 0.6 (L120) |
|---|---|---|---|
| AWG | 23 | 23 | |
| Maximum Conductor Resistance | Ω/km | 146.4 | 133.2 |
| Minimum Insulation Resistance @500 V DC | MΩ/km | 500 | 5000 |
| Characteristics Impedance @100MHz | Ω | 100 | 120+15 |
| Maximum Capacitance Unbalance | |||
| Real/earth | pF/km | 1600 | 300 |
| Maximum Average Attenuation | |||
| @1MHz | dB/100m | 2.0 | 2.0 |
| @4MHz | dB/100m | 3.8 | 3.8 |
| @10MHz | dB/100m | 6.0 | 6.0 |
| @16MHz | dB/100m | 7.6 | 7.6 |
| @25MHz | dB/100m | 9.5 | 9.5 |
| @31.25MHz | dB/100m | 10.7 | 10.7 |
| @62.5MHz | dB/100m | 15.4 | 15.4 |
| @100MHz | dB/100m | 19.8 | 19.8 |
| @250MHz | dB/100m | 32.9 | 32.9 |
| Minimum NEXT Pair to Pair | |||
| @1MHz | dB | 77.3 | 77.3 |
| @4MHz | dB | 68.3 | 68.3 |
| @10MHz | dB | 62.3 | 62.3 |
| @16MHz | dB | 59.2 | 59.2 |
| @25MHz | dB | 56.3 | 56.3 |
| @31.25MHz | dB | 54.9 | 54.9 |
| @62.5MHz | dB | 50.4 | 50.4 |
| @100MHz | dB | 47.3 | 47.3 |
| @250MHz | dB | 41.3 | 41.3 |
| Minimum ELFEXT Pair to Pair | |||
| @1MHz | dB | 68.8 | 68.8 |
| @4MHz | dB | 56.8 | 56.8 |
| @10MHz | dB | 48.8 | 48.8 |
| @16MHz | dB | 44.7 | 44.7 |
| @25MHz | dB | 40.8 | 40.8 |
| @31.25MHz | dB | 38.9 | 38.9 |
| @62.5MHz | dB | 32.8 | 32.8 |
| @100MHz | dB | 28.8 | 28.8 |
| @250MHz | dB | 20.8 | 20.8 |
Mechanical and Thermal Properties
Minimum Bending Radius: 12×OD (static); 24×OD (dynamic)
Temperature Range:-40℃ to +60℃ (during operation);
-10℃ +60℃ (during installation)
Dimensions And Weight
K20 cables
| Cable Code | No. of pairs |
Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
|
|---|---|---|---|---|---|
| Inner | Outer | ||||
| 0.56mm conductor, 1.45mm Insulated Wire | |||||
| RD/K20-F/FTPCat6-2Y(St)H(SWB)H-PIMF-4P0.56 | 4 | 1.0 | 1.0 | 11.7 | 156 |
L120 cables
| Cable Code | No. of pairs | Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
|---|---|---|---|---|
| 0.6mm conductor, 1.34mm Insulated Wire | ||||
| RD/L120-F/FTPCat6-02YHH-4P0.6 | 4(2Q) | 1.8 | 8.5 x 6* | 60 |
| RD/L120-F/FTPCat6-02YHH-8P0.6 | 8(2 x 4p) | 1.8 | 18 x 6** | 120 |
| RD/L120-F/FTPCat6-02YHH-12P0.6 | 12(3 x 4p) | 1.8 | 16 | 235 |
| RD/L120-F/FTPCat6-02YHH-32P0.6 | 32(4 x 4Q) | 1.8 | 19 | 360 |
| RD/L120-F/FTPCat6-02YHH-64P0.6 | 64(8 x 4Q) | 1.8 | 30 | 675 |
| RD/L120-F/FTPCat6-02YHH-128P0.6 | 128(4SU x 4Q) | 1.8 | 40 | 1250 |
Note: The parameters listed above are nominal values as per cable standards. Actual values may vary due to material and manufacturing process variations. For precise specifications or customized requirements, please contact us for further information