MD4 Medium Distance Trackside Telecom Cables
Applications :
- The cables are designed for long distance of over 10km telecommunications alongside railway lines.
Standards :
- SNCF CT 2328 (Main cables) /SNCT CT 2329 (Branch cables)
Construction :
- CT2328 Type (Main Cables)
- Conductors : Sol id copper, 0.8mm nominal diameter.
- Insulat ion : Coloured sol id polyethylene.
- Cabling Element : Four conductors are twisted together to form a quad.
- Possible Harness : Aluminium screen.
- Filling : Petroleum jelly.
- Screen : PE-copolymer coated aluminium tape.
- Drain Wire : Tinned drain wire.
- Inner Sheath : Low density polyethylene.
- Screen : One corrugated copper tape.
- Intermediate Sheath : Low density polyethylene.
- Armour : Two helically applied steel tapes.
- Outer Sheath : Low density polyethylene.
Optional :
- CT2329 Type (Branch Cables): For CT 2329 type, the cables have PE inner sheath, double corrugated steel tapes armour and PE outer sheath, without aluminium tape screen & copper tape.
Electrical Characteristics at 20 °C :
-
Nominal Conductor Diameter mm 0.8 Maximum Conductor Resistance (DC) Ω/km 73.4 Minimum Insulation Resistance @500 V DC (3mins) MΩ.km 15000 Mutual Capacitance @800Hz nF/km 51 Average Capacitance Unbalance Main Cables In quad pF/1450 m 50 Between quads pF/1450 m 30 Real-ground pF/1450 m 200 Branch Cables In quad pF/1450 m 100 Between quads pF/1450 m 100 Real-ground pF/1450 m 700 Maximum Attenuation @1MHz dB/km 15.9 Maximum Reduction Factor for Main Cables @100V/km 50Hz 14 quads 0.3 21 quads 0.2 28 quads 0.18 Dielectric Strength (DC voltage 1min) Conductor to Conductor V 1500 Conductor to Screen V 3000
Mechanical and Thermal Properties :
- Minimum Bending Radius : 10×OD.
- Temperature Range : -40°C to +60°C (during operation); -10°C +60°C (during installation).
Dimensions and Weight :
CT2328 (Main cable)
Cable Code | No. of Quads | Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
||
Inner | Interm. | Outer | ||||
0.8mm Conductor, 1.27mm Insulated Wire | ||||||
RS2328-2Y2Y(K)2YB2Y-14Q0.8 | 14 | 1.2 | 1.1 | 2.2 | 29.2 | 1332 |
RS2328-2Y2Y(K)2YB2Y-21Q0.8 | 21 | 1.3 | 1.3 | 2.5 | 31.3 | 1655 |
RS2328-2Y2Y(K)2YB2Y-28Q0.8 | 28 | 1.3 | 1.3 | 2.5 | 35.5 | 2013 |
CT2328 (Main cables with screened quads)
Cable Code | No. of Quads | Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
||
Inner | Interm. | Outer | ||||
0.8mm Conductor, 1.27mm Insulated Wire | ||||||
RS2328-2Y(L)2Y(K)2YB2Y-(14+7)Q0.8 | 14+7screen Quads | 1.3 | 1.3 | 2.5 | 32.7 | 1765 |
RS2328-2Y(L)2Y(K)2YB2Y-(18+3)Q0.8 | 18+3screen Quads | 1.3 | 1.3 | 2.5 | 32.9 | 1783 |
CT2329 (Branch cable)
Cable Code | No. of Quads | Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
|
Inner | Outer | ||||
0.8mm Conductor, 1.4mm Insulated Wire | |||||
RS2329-2Y2YB2Y-4Q0.8 | 4 | 1.0 | 1.7 | 16.4 | 339 |
RS2329-2Y2YB2Y-8Q0.8 | 8 | 1.2 | 1.8 | 18.8 | 477 |
RS2329-2Y2YB2Y-14Q0.8 | 14 | 1.2 | 2.2 | 22.3 | 686 |
UV Resistant |
Water Resistant |
Rated voltage |
Buried in Ciround |
Laid In Ducts |
Zero Halogen IEC 60754-1/NF C20-454 EN 50267-2-1 |