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RT/F3 E1/E2/E3 Type Axle Counter Cable

RT/F3 E1/E2/E3 Type Axle Counter Cable

Application

The cables are designed for transmission of signals up to 90 kHz in axle counter train detection systems.

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