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

Application

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