Railway Cables

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 fi lled with a low-permitivity compound. Unfi lled 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