Feichun AJ-2Y(L)2Y2YDB2Y Railway Signalling Cable with Induction Protection
In the world of railway signalling, reliability, durability, and safety are non-negotiable. The Feichun AJ-2Y(L)2Y2YDB2Y Railway Signalling Cable offers a comprehensive solution designed to address the unique challenges of modern railway networks.
This product combines signal transmission and power supply capabilities in one robust cable, optimized for use along electrified tracks.
Featuring advanced protection against inductive interference and superior mechanical strength, this cable is a must-have for demanding railway environments.
The Feichun AJ-2Y(L)2Y2YDB2Y Railway Signalling Cable is a multi-purpose combi cable designed specifically for railway signalling applications.
It combines low-frequency signal transmission through symmetric circuits (like axle counters) with power supply cores for light signals or point machines, delivering efficiency and cost savings in installation.
Key Features and Benefits:
- Combined Signal and Power Transmission: Simplifies installations by reducing the need for multiple cables.
- Induction Protection: Copper wire screen provides effective shielding against interference caused by high-voltage tracks.
- Robust Mechanical Protection: Galvanized steel tape armouring ensures durability against physical stress.
This cable is tailored for use in demanding railway environments, where performance and reliability are critical.
| Parameter | Details |
|---|---|
| Material | Copper Conductors |
| Stranding Pattern | n x 4 x 0.9/1.4 + m x 1 x 1.4/1.8 mm |
| Functionality | Star-quads for signal; cores for power supply |
The star-quad arrangement ensures superior signal integrity, while the dedicated power cores efficiently transmit energy for railway applications.
B. Insulation and Construction
| Component | Material | Key Feature |
|---|---|---|
| Core Insulation | Polyethylene (PE) | Ensures high dielectric strength |
| Monitoring Conductor | Copper (0.5 mm) | With PE perforation for monitoring |
| Laminated Sheath | Aluminum tape (0.15 mm) coated with copolymer | Improves moisture and interference protection |
| Drain Wire | Tinned Copper (0.4 mm) | Enhances shielding performance |
| Inner Sheath | Polyethylene (PE) | Protects inner components |
| Intermediate Sheath | Polyethylene (PE) | Additional layer for insulation |
| Armouring | Galvanized steel tape | Increases mechanical resistance |
| Outer Sheath | Polyethylene (PE) | Robust against environmental factors |
C. Electrical Characteristics
Star-Quad Stranded Cores
| Diameter (mm) | Loop Resistance (Ω) | Insulation Resistance (MΩ·km) | Capacitance (nF/km) | Attenuation at 40 kHz (dB/km) |
|---|---|---|---|---|
| 0.9 | ≤ 56.6 | ≥ 10,000 | ≤ 45 | ≤ 2.6 |
| 1.4 | ≤ 23.4 | ≥ 10,000 | ≤ 45 | ≤ 1.5 |
Core Stranded Cores
| Diameter (mm) | Conductor Resistance (Ω/km) | Insulation Resistance (MΩ·km) | Capacitance (nF/km) | Test Voltage (kV) |
|---|---|---|---|---|
| 0.9 | ≤ 28.9 | ≥ 10,000 | ≤ 120 | 2.5 |
| 1.4 | ≤ 11.9 | ≥ 10,000 | ≤ 120 | 2.5 |
| 1.8 | ≤ 7.2 | ≥ 10,000 | ≤ 120 | 2.5 |
D. Environmental and Mechanical Properties
| Condition | Value |
|---|---|
| Operating Temperature | -40°C to +60°C |
| Laying Temperature | -10°C to +60°C |
| Bending Radius (Installation) | ≥ 10 x cable diameter |
| Bending Radius (Final) | ≥ 7.5 x cable diameter |
III. Standards and Compliance
The Feichun AJ-2Y(L)2Y2YDB2Y complies with Deutsche Bahn AG PH 416.0118, a rigorous standard that ensures interoperability, safety, and reliability in railway applications. Adherence to these standards guarantees:
- High Performance: Reliable signal transmission and power distribution.
- Safety: Enhanced protection against interference and damage.
IV. Common Challenges in Railway Signalling Applications
A. Inductive Interference
Problem: High-voltage tracks can cause significant signal interference.
Solution: The copper wire screen in this cable acts as an effective barrier, maintaining signal clarity.
B. Mechanical Stress
Problem: Physical damage during installation or operation.
Solution: Steel tape armouring offers excellent resistance to crushing, bending, and abrasion.
V. Installation and Maintenance Best Practices
A. Installation Tips
Bending Radius Compliance: Adhere to the minimum bending radius to avoid damage.
Proper Termination: Use shield-compatible connectors for signal integrity.
B. Maintenance Checklist
| Activity | Frequency |
|---|---|
| Visual Inspection | Quarterly |
| Electrical Testing | Annually |
| Grounding Checks | After Repairs |
VI. Conclusion
The Feichun AJ-2Y(L)2Y2YDB2Y Railway Signalling Cable is a reliable, versatile solution for modern railway systems. With its combined signal and power transmission, robust construction, and compliance with stringent standards, it addresses common challenges in railway environments.
For railway operators seeking long-lasting and dependable cables, Feichun offers the best choice for seamless installation and operation along electrified tracks.
For more information or to place an order, contact Feichun Cable Solutions today!
