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RT/F3 D & S & B 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, 0.9/1.4 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. 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 PECopolymer on at least one side
is applied with longitudinally overlap.
Inner Sheath (for S/B type): Polyethylene or LSZH fi re retardant compound.
Mechanical Protection (for S/B type): One corrugated steel tape or brass tape is longitudinally applied with
overlap. Unarmoured cables option can be offered upon request.
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 |
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)
Core Identification
| Pair Number | A Wire | B Wire | Pair Number | A Wire | B Wire |
| 1 | WHITE | BLUE | 13 | YELLOW | GREEN |
| 2 | WHITE | ORANGE | 14 | YELLOW | BROWN |
| 3 | WHITE | GREEN | 15 | YELLOW | GREY |
| 4 | WHITE | BROWN | 16 | VIOLET | BLUE |
| 5 | WHITE | GREY | 17 | VIOLET | ORANGE |
| 6 | RED | BLUE | 18 | VIOLET | GREEN |
| 7 | RED | ORANGE | 19 | VIOLET | BROWN |
| 8 | RED | GREEN | 20 | VIOLET | GREY |
| 9 | RED | BROWN | 21 | TURQUOISE | BLUE |
| 10 | RED | GREY | 22 | TURQUOISE | ORANGE |
| 11 | YELLOW | BLUE | 23 | TURQUOISE | GREEN |
| 12 | YELLOW | ORANGE | 24 | TURQUOISE | BROWN |
Two pair cables laid up in quad formation colour coded in rotation, Orange, White, Green, Black
Dimensions And Weight
A-2Y(F)(L)2Y n×2×0.9/1.4 Cables
| Cable Code | Number of Pairs (n) |
Nominal Sheath Thickness mm |
Maximum Overall Diameter mm |
Nominal Weight kg/km |
| 0.9mm Conductor, 1.55mm Insulated Wire | ||||
| RS/RT/F3-D-2Y(F)(L)2Y-2P0.9 | 2 | 2.4 | 13.2 | 210 |
| RS/RT/F3-D-2Y(F)(L)2Y-10P0.9 | 10 | 2.4 | 21.6 | 530 |
| RS/RT/F3-D-2Y(F)(L)2Y-12P0.9 | 12 | 2.4 | 24.8 | 580 |
| RS/RT/F3-D-2Y(F)(L)2Y-19P0.9 | 19 | 2.4 | 31.2 | 800 |
| RS/RT/F3-D-2Y(F)(L)2Y-24P0.9 | 24 | 2.4 | 33.8 | 980 |
| 1.4mm Conductor, 2.2mm Insulated Wire | ||||
| RS/RT/F3-D-2Y(F)(L)2Y-2P1.4 | 2 | 2.4 | 23.4 | 320 |
| RS/RT/F3-D-2Y(F)(L)2Y-10P1.4 | 10 | 2.4 | 30.0 | 910 |
| RS/RT/F3-D-2Y(F)(L)2Y-12P1.4 | 12 | 2.4 | 32.0 | 1101 |
| RS/RT/F3-D-2Y(F)(L)2Y-19P1.4 | 19 | 2.4 | 37.3 | 1450 |
| RS/RT/F3-D-2Y(F)(L)2Y-24P1.4 | 24 | 2.4 | 42.3 | 1780 |
A-2Y(L)2YB2Y n×2×0.9/1.4 Cables
| Cable Code | Number of Pairs (n) |
Nominal Sheath Thickness mm |
Maximum Overall Diameter mm |
Nominal Weight kg/km |
|
| 0.9mm Conductor, 1.8mm Insulated Wire | |||||
| RS/RT/F3-S-2Y(L)2YB2Y-2P0.9 | 2 | 2.2 | 2.4 | 22.0 | 399 |
| RS/RT/F3-S-2Y(L)2YB2Y-10P0.9 | 10 | 2.2 | 2.4 | 30.4 | 880 |
| RS/RT/F3-S-2Y(L)2YB2Y-12P0.9 | 12 | 2.2 | 2.4 | 33.6 | 963 |
| RS/RT/F3-S-2Y(L)2YB2Y-19P0.9 | 19 | 2.2 | 2.4 | 40.0 | 1312 |
| RS/RT/F3-S-2Y(L)2YB2Y-24P0.9 | 24 | 2.2 | 2.4 | 42.6 | 1626 |
| 1.4mm Conductor , 2.7mm Insulated Wire | |||||
| RS/RT/F3-S-2Y(L)2YB2Y-2P1.4 | 2 | 2.2 | 2.4 | 32.2 | 608 |
| RS/RT/F3-S-2Y(L)2YB2Y-10P1.4 | 10 | 2.2 | 2.4 | 38.8 | 1510 |
| RS/RT/F3-S-2Y(L)2YB2Y-12P1.4 | 12 | 2.2 | 2.4 | 40.8 | 1827 |
| RS/RT/F3-S-2Y(L)2YB2Y-19P1.4 | 19 | 2.2 | 2.4 | 46.1 | 2380 |
| RS/RT/F3-S-2Y(L)2YB2Y-24P1.4 | 24 | 2.2 | 2.4 | 51.1 | 2954 |