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RT/F3 E1/E2/E3 Type Axle Counter Cable
Application
RT/F3 E1/E2/E3 Type Axle Counter Cable are designed for transmission of signals up to 90 kHz in axle
counter train detection systems.
Reference Standards
RT/E/PS/00031
Construction
Conductors: Tinned copper wire, 0.9 or 1.4 mm nominal diameter.
Insulation: Solid polyethylene.
Cabling Element: Two insulated conductors are twisted together to form a pair.
Stranding: Pairs are helically stranded in concentric layers.
Filling: Cable core interstices are filled with a low-permitivity compound. Unfilled cables option can be offered
upon request.
Core Wrapping: Plastic tape(s) with overlapping.
Moisture Barrier: One laminated sheath made of aluminium tape coated with PE-Copolymer on at least one side
is applied with longitudinally overlap.
Inner Sheath: Polyethylene or LSZH fi re retardant compound.
Electrostatic Shield: One layer of helically applied copper wires.
Electromagnetic Shield: Two helically applied steel tapes.
Outer Sheath: Polyethylene or LSZH fi re retardant compound. Ruggedised PE sheath compound can be offered
upon request.
Type Codes
F1 class: Non LSZH cables.
F5 class: Unfi lled cables
D type: Unarmoured types
R type: Ruggedised PE sheath
S type: Steel tape armoured types
B type: Brass tape armoured types
E1, E2 & E3 types: 3 different induction protection levels available.
Electrical Characteristics at 20℃
| Nominal Conductor Diameter | mm | 0.9 | 1.4 |
|---|---|---|---|
| Nominal Conductor Cross Section | mm² | 0.63 | 1.5 |
| Maximum Conductor Resistance | Ω/km | 30.0 | 12.5 |
| Minimum Insulation Resistance @500 V DC (1min) | MΩ.km | 5000 | 5000 |
| Nominal Conductor Capacitance @800Hz/1000Hz (AC) | nF/km | 42+3 | 47+3 |
| Dielectric Strength, conductor to screen (DC voltage 2mins) | V | 3000 | 3000 |
| Maximum Average Attenuation | |||
| @1.0KHz | dB/km | 0.73 | 0.45 |
| @2.4KHz | dB/km | 1.10 | 0.62 |
| @40KHz | dB/km | 2.88 | 1.77 |
| @90KHz | dB/km | 3.70 | 2.41 |
| @1.024MHz | dB/km | 11.2 | 7.45 |
| Minimum Average Near-end Crosstalk | |||
| @1.0KHz | dB/km | 60 | 60 |
| @2.4KHz | dB/km | 60 | 60 |
| @40KHz | dB/km | 50 | 50 |
| @90KHz | dB/km | 50 | 50 |
| @1.024MHz | dB/km | 35 | 35 |
| Maximum Reduction Factor @100V/km,50Hz | |||
| EMI RF 1 (modest level) | 0.65 | 0.65 | |
| EMI RF 2 (medium level) | 0.45 | 0.45 | |
| EMI RF 3 (high level) | 0.20 | 0.20 |
Mechanical and Thermal Properties
Minimum Bending Radius: 7.5×OD (unarmoured); 10×OD (armoured)
Temperature Range: -30℃ to +60℃ (during operation);
-10℃ to +60℃ (during installation)
Dimensions And Weight
| Cable Code | Number of Pairs |
Nominal Sheath Thickness mm |
Nominal Overall Diameter mm |
Nominal Weight kg/km |
|
|---|---|---|---|---|---|
| Inner | Outer | ||||
| 0.9mm Conductor , 1.8mm Insulated Wire | |||||
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-2P0.9 | 2 | 2.2 | 2.4 | 23.4 | 1300 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-10P0.9 | 10 | 2.2 | 2.4 | 31.8 | 1650 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-12P0.9 | 12 | 2.2 | 2.4 | 35.0 | 1760 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-19P0.9 | 19 | 2.2 | 2.4 | 41.4 | 2275 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-24P0.9 | 24 | 2.2 | 2.4 | 44.0 | 2450 |
| 1.4mm Conductor, 2.7mm Insulated Wire | |||||
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-2P1.4 | 2 | 2.2 | 2.4 | 33.6 | 1480 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-10P1.4 | 10 | 2.2 | 2.4 | 40.2 | 2200 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-12P1.4 | 12 | 2.2 | 2.4 | 42.2 | 2325 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-19P1.4 | 19 | 2.2 | 2.4 | 47.5 | 2975 |
| RS/RT/F3-S/E3-2Y(F)(L)2YDB2Y-24P1.4 | 24 | 2.2 | 2.4 | 52.5 | 3150 |
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