Feichun AJ-02YSTF(L)2YDB2Y: Long-Distance Telecommunication Cable with Enhanced Protection for Railway Applications
Railway telecommunication systems demand robust and reliable cables to support long-distance signal transmission in challenging environments. The Feichun AJ-02YSTF(L)2YDB2Y cable is engineered to meet these demands, providing a modern solution for general cabling, especially along electrified tracks.
As a replacement for legacy F-, TF-, TFS-, and Coax-design cables, it adheres to Dlk 1.01.106 standards and offers unparalleled performance in direct burial and duct installations.
Key Features and Benefits:
- Long-distance transmission: Optimized electrical characteristics ensure signal integrity over extended distances.
- Induction protection: A copper wire screen minimizes interference from electrified tracks and other sources.
- Enhanced mechanical durability: Steel tape armouring protects against physical damage, making it ideal for direct burial.
- Water ingress prevention: Longitudinal water blocking safeguards the cable from environmental hazards.
- Cost-effective installation: Suitable for direct burial, ducts, and free air applications, reducing installation complexity and cost.
This article explores the technical specifications, challenges this cable resolves, and best practices for its installation and maintenance, providing valuable insights for railway telecommunication engineers, contractors, and maintenance teams.
II. Technical Specifications
A. Conductor Characteristics
- Material: High-purity copper.
- Stranding Pattern: n x 4 x 1.4 + m x 4 x 0.9 mm (n = number of 1.4 mm quads, m = number of 0.9 mm quads).
Supports simultaneous transmission of multiple signal types.
B. Insulation and Construction
| Component | Material | Purpose |
| Core Insulation | Foam-skin polyethylene (PE) | Minimizes signal attenuation. |
| Inner Sheath | Polyethylene (PE) | Provides mechanical protection and water resistance. |
| Laminated Sheath | Copolymer-coated aluminum tape | Shields against electromagnetic interference. |
| Screen Construction | Copper wire | Protects against inductive interference. |
| Armouring | Galvanized steel tape | Ensures mechanical robustness. |
C. Outer Sheath
- Material: Polyethylene (PE), offering excellent environmental resistance.
- UV resistance and suitability for direct burial in various conditions.
D. Electrical Characteristics
| Parameter | Value (0.9 mm) | Value (1.4 mm) |
| Loop Resistance | ≤ 56.6 Ω/km | ≤ 23.4 Ω/km |
| Insulation Resistance | ≥ 10,000 MΩ·km | ≥ 10,000 MΩ·km |
| Capacitance | ≤ 34 nF/km | ≤ 36 nF/km |
| Attenuation (800 Hz) | ≤ 3.3 dB/km | ≤ 2.6 dB/km |
| Maximum Operating Voltage | Core/Core: 2.5 kV, Core/Screen: 2.5 kV | |
E. Environmental Conditions
| Parameter | Value |
| Operating Temperature | -30°C to +70°C |
| Installation Temperature | -5°C to +50°C |
| Minimum Bending Radius | 10x outer diameter (multiple bends) |
III. Standards and Compliance
A. Deutsche Bahn AG PH 416.0530 v.1.1
The Feichun AJ-02YSTF(L)2YDB2Y cable complies with Deutsche Bahn’s stringent requirements, ensuring reliability and safety for railway telecommunication systems. Adherence to these standards guarantees:
Interoperability with existing railway infrastructure.
High performance in electrically noisy environments.
Long-term durability for demanding applications.
IV. Challenges and Solutions
A. Signal Attenuation Over Long Distances
Challenge: Maintaining signal strength over extended runs.
Solution: Foam-skin PE insulation reduces attenuation, preserving signal integrity.
B. Inductive Interference
Challenge: Electromagnetic fields from electrified tracks disrupt communication.
Solution: Copper wire screening shields signals effectively.
C. Mechanical Damage During Installation
Challenge: Direct burial exposes cables to ground movement and sharp objects.
Solution: Steel tape armouring provides exceptional mechanical protection.
D. Water Ingress
Challenge: Long-term exposure to moisture degrades cable performance.
Solution: Longitudinal water blocking prevents water migration.
E. Replacement of Legacy Cables
Challenge: Upgrading outdated infrastructure with minimal disruption.
Solution: The cable is designed to match and surpass the performance of legacy types (F-, TF-, TFS-, and Coax-design).
V. Installation and Maintenance Best Practices
A. Installation Guidelines
- Trenching and Bedding: Ensure trenches are smooth and free of sharp objects. Lay the cable on a bed of sand or fine soil.
- Backfilling: Use fine material to backfill and compact the trench in layers.
- Markers: Clearly mark the cable route to avoid accidental damage during future excavations.
B. Maintenance Recommendations
- Conduct regular inspections to detect potential ground disturbances.
- Test electrical parameters periodically to ensure signal integrity.
- Replace damaged sections promptly to avoid further degradation.
C. Proper Termination
- Use connectors compatible with shielded and armoured cables.
- Ensure grounding of the copper wire screen to maintain interference protection.
VI. Advantages of Feichun AJ-02YSTF(L)2YDB2Y Cable
| Feature | Customer Benefit |
| Foam-Skin PE Insulation | Reduced attenuation for long-distance transmission. |
| Copper Wire Screen | Minimal inductive interference. |
| Steel Tape Armouring | Resistance to mechanical damage in direct burial. |
| Longitudinal Water Blocking | Reliable performance in wet conditions. |
VII. Conclusion
The Feichun AJ-02YSTF(L)2YDB2Y cable is a cutting-edge solution for railway telecommunications, combining robust materials, advanced manufacturing processes, and compliance with strict standards. Designed to replace legacy cables, it ensures reliable long-distance communication, exceptional interference protection, and durability in demanding environments.
By adhering to the recommended installation and maintenance practices, customers can maximize the cable’s performance and longevity, ensuring a reliable telecommunication system for years to come.
For inquiries or to learn more about the Feichun AJ-02YSTF(L)2YDB2Y cable, contact Feichun today and explore how this innovative solution can revolutionize your railway infrastructure.
|
|
Feichun AJ-02YSTF(L)2YDB2Y: Long-Distance Telecommunication Cable with Enhanced Protection for Railway Applications Images
|
