Feichun AJ-2Y(L)2YDB2Y (H45): Robust Railway Signalling Cable with Enhanced Interference and Mechanical Protection for Direct Burial
Feichun AJ-2Y(L)2YDB2Y (H45): Robust Railway Signalling Cable with Enhanced Interference and Mechanical Protection for Direct Burial
I. Introduction
A. Overview of Feichun AJ-2Y(L)2YDB2Y (H45)
The Feichun AJ-2Y(L)2YDB2Y (H45) is a premium railway signaling cable engineered to transmit low-frequency signals through symmetric circuits, such as those used in axle counters.
Designed for direct burial and installation in ducts, this cable is built to endure the most demanding railway environments, particularly along electrified tracks.
Its robust construction includes induction protection and mechanical reinforcement, ensuring reliable performance and longevity.
B. Key Features and Benefits
- Optimized for Railway Signaling: Ideal for critical applications such as axle counters.
- Enhanced Induction Protection: Copper wire screening mitigates inductive interference from electrified tracks.
- Robust Mechanical Protection: Steel tape armouring safeguards against physical damage.
- Direct Burial Capability: Eliminates the need for additional protective conduits, reducing installation complexity and cost.
C. Target Audience
This product is tailored for:
- Railway signaling engineers
- Installation contractors
- Maintenance personnel
These professionals require a reliable solution for signal transmission in harsh conditions, including direct burial environments.
II. Technical Specifications
| Parameter | Details |
|---|---|
| Conductor | Copper, n x 4 x 0.9/1.4 mm (star-quad stranding). |
| Core Insulation | Polyethylene (PE) |
| Monitoring Conductor | Copper, 0.5 mm with PE perforation (≥ 7 quads). |
| Inner Sheath | Polyethylene (PE) |
| Intermediate Sheath | Polyethylene (PE) |
| Screen Construction | Copper wire screen. |
| Armouring/Reinforcement | Galvanized steel tape for superior mechanical durability. |
| Outer Sheath | Polyethylene (PE) for environmental protection. |
| Electrical Characteristics | Loop Resistance: ≤ 56.6 Ω (0.9 mm), ≤ 23.4 Ω (1.4 mm). Insulation Resistance: ≥ 10,000 MΩ·km. Capacitance: ≤ 45 nF/km. |
| Environmental Conditions | Operating Temp: -40°C to +60°C. Laying Temp: -10°C to +60°C. |
| Bending Radius | Multiple bends: ≥ 10x outer diameter. Final bends: ≥ 7.5x outer diameter. |
III. Standards and Compliance
A. Importance of Standards Compliance
Compliance with industry standards ensures safety, reliability, and interoperability in railway systems.
B. Key Standards
Deutsche Bahn AG 416.0115 V 1.1: Specifies the technical requirements for railway signaling cables.
Deutsche Bahn AG 416.0116 V 2.0: Complements the previous standard, emphasizing performance in electrified railway environments.
IV. Common Challenges in Railway Signaling Applications and Solutions
| Challenge | Feichun AJ-2Y(L)2YDB2Y (H45) Solution |
|---|---|
| Inductive Interference | Copper wire screen minimizes signal interference, ensuring consistent performance. |
| Mechanical Damage (Direct Burial) | Steel tape armouring protects against external forces and ground movement. |
| Water Ingress | Multi-layer PE sheaths and laminated sheath prevent water penetration. |
| Signal Integrity Over Long Distances | Optimized electrical properties ensure clear signal transmission. |
| Rodent Attack | Steel armouring offers added protection against rodent damage. |
V. Installation and Maintenance Best Practices for Direct Burial
A. Proper Trenching and Bedding
Depth and Width: Ensure trenches are deep and wide enough to prevent surface pressure damage.
Smooth Bedding: Lay the cable on a bed of sand or fine soil to protect against sharp objects.
B. Backfilling and Compaction
Use soft, non-abrasive materials to backfill trenches.
Compact in layers to ensure cable stability and prevent future ground shifts.
C. Cable Markers and Route Identification
Place clear markers to identify cable routes and minimize accidental excavation damage.
D. Correct Termination and Connections
Utilize compatible connectors and ensure proper grounding for copper screens.
E. Regular Inspection and Maintenance
Conduct periodic electrical tests to monitor signal integrity.
Inspect the cable route for potential threats like ground disturbances or water pooling.
VI. Advantages of Feichun AJ-2Y(L)2YDB2Y (H45)
A. Material Benefits
- High-Quality Polyethylene (PE): Durable and environmentally resistant.
- Galvanized Steel Armouring: Exceptional protection against external impacts.
B. Manufacturing Excellence
- Precision-engineered to meet Deutsche Bahn AG standards.
- Advanced screening and sheathing techniques ensure longevity and reliability.
VII. Conclusion
The Feichun AJ-2Y(L)2YDB2Y (H45) railway signaling cable delivers unparalleled reliability for direct burial and installation in ducts, meeting the rigorous demands of electrified railway environments.
With superior induction protection, mechanical durability, and compliance with Deutsche Bahn AG standards, this cable is the ultimate choice for railway signaling professionals.
For professionals seeking a robust, cost-effective solution, Feichun AJ-2Y(L)2YDB2Y (H45) ensures long-term performance and safety in critical railway applications.
Choose Feichun for your railway signaling needs—where performance meets durability.
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