In the field of rail transportation, every gram of weight and every millimeter of space is related to the energy efficiency and safety of the vehicle. The heavy design of traditional cables not only takes up valuable space, but also hides fire hazards. Today, a “thin-wall revolution” is quietly changing this situation-the domestic brand TST cable EN50306 series thin-wall cables have injected “lightweight safety genes” into more than 1,500 high-speed railways and subways around the world.
- Four disruptive advantages
Break through tradition and reshape standards
TST cableEN50306 cable breaks the limitations of the industry with innovative technology and achieves disruptive breakthroughs in four dimensions:
Space and weight reduction
Millimeter-level revolution
The heavy sheath of traditional cables not only increases the weight of the vehicle, but also squeezes the limited space inside the vehicle. TST cable uses precision design to reduce the thickness of the sheath to 0.2mm (EN50306-3 type), and the weight of a single-core cable is only 5.9kg/km, saving 40% of the installation space compared to traditional cables. The bending radius is 6 times the outer diameter (6D), which can easily cope with the narrow structure of the vehicle and release more space potential for rail vehicle design. For example, in the wiring of EMU carriages, the space saving can reach 0.3 cubic meters per kilometer, greatly improving the flexibility of the overall layout of the vehicle.
Top fire safety
Guardian of life and property
In rail vehicle fire accidents, cables are often the “invisible pusher” of the spread of fire. The full range of TST cable cables has passed the EU’s highest fire protection certification of EN45545-2 HL3, with a fire load as low as 22kJ/m (single-core cable), and releases halogen-free and low-toxic substances when burning. Its unique low-smoke and halogen-free material only produces transparent smoke in the flame, avoiding toxic gases from suffocating passengers, while reducing the difficulty of fire fighting and buying precious time for escape.
Super adaptability
Reliable performance across the north and south
From the extreme cold in Harbin to the high temperature in Hainan, rail vehicles face harsh environmental tests. TST cable uses tinned copper conductor + irradiated cross-linked polyolefin material, which can operate stably in extreme temperature ranges from -40℃ to 105℃, covering high-cold and high-temperature scenarios. The anti-aging and corrosion resistance significantly improve the cable life and greatly reduce the operation and maintenance costs.
Intelligent protection matrix
Scenario-based customized solutions
To meet the needs of different scenarios, TST cable develops subdivided models: EN50306-3 MMS uses tinned copper braided shielding to ensure signal transmission stability and achieve extremely high anti-interference rate in train control systems; EN50306-4 5E becomes the first choice for vehicle Ethernet trunk lines with 5-component pair shielding + 1mm thickened sheath, supporting gigabit data transmission; EN50306-4 1P ultra-thin sheath (0.42mm) specializes in compact space wiring in the car to achieve precise adaptation.
- Technology Digging
Core Technology and Innovative Materials
The excellent performance of TST cable EN50306 cable comes from two core technological breakthroughs:
Advanced Cross-linked Insulation System
Traditional cables mostly use chemical cross-linking or high-temperature vulcanization processes, which have problems of uneven insulation layer and fast aging. TST cable adopts the industry-leading irradiation cross-linking technology, and forms a three-dimensional network molecular structure of the insulation layer through high-energy ray treatment, which significantly improves the insulation strength and elongation at break. This process not only greatly improves the mechanical durability of the cable, but also ensures that there is no risk of cracking during long-term use.
New composite sheath material
The low-smoke and halogen-free elastomer material developed by the TST cable R&D team over many years achieves comprehensive protection performance under thin-wall design. The material is optimized through a special formula, combining high wear resistance, weather resistance and low friction characteristics, effectively resisting mechanical wear, environmental aging and friction damage during installation. Tested by authoritative institutions, the impact resistance is significantly improved while maintaining flexibility to ensure stable operation of the cable under extreme conditions. - TST cable EN50306 thin-wall cable
Model and technical parameters
Product features
Temperature resistance: -40~105℃
Withstand voltage level: 300V
Fireproof level: Meet HL3 of EN45545-2 R15/R16
Insulation strength: >10Mpa
Elongation at break: >125%
Cable bending radius: 6D (D cable outer diameter)
Thin-wall single-core cable EN50306-2 300V M
Cable structure
①Conductor: Soft tinned annealed copper wire Class 5 structure
②Insulation: Standard low-smoke, non-corrosive elastic compound
Thin-wall single-core/multi-core cable EN50306-3 300V MM
Cable structure
①Conductor: Soft tinned annealed copper wire Category 5 structure
②Insulation: Standard low smoke no-gold elastic compound
③Sheath: Standard low smoke no-gold elastic compound
Thin-walled single-core/multi-core shielded cable EN50306-3 300V MMS
Cable structure
①Conductor: Tinned copper conductor Category 5 or Category 6 structure
②Insulation: Irradiated cross-linked polyolefin
③Shield: Tinned copper braid
④Sheath: Irradiated cross-linked polyolefin or rubber elastomer
Thin-walled multi-core unshielded cable EN50306-4 1P 300V MM
Thin-walled multi-core unshielded cable EN50306-4 1E 300V MM
Cable structure
①Conductor: Soft tinned annealed copper wire Category 5 structure
②Insulation: Standard low smoke no-gold elastic compound
③Sheath: Standard low smoke no-gold elastic compound
Thin-wall multi-core shielded cable EN50306-4 3P 300V MMS
Thin-wall multi-core shielded cable EN50306-4 3E 300V MMS
Cable structure
①Conductor: Tinned copper conductor Category 5 or Category 6 structure
②Insulation: Irradiated cross-linked polyolefin
③Shield: Tinned copper braid
④Sheath: Irradiated cross-linked polyolefin or rubber elastomer
Thin-wall multi-pair shielded cable EN50306-4 5P 300V MMS
Thin-wall multi-pair shielded cable EN50306-4 5E 300V MMS
Cable structure
①Conductor: Tinned copper conductor Category 5 or Category 6 structure Category 5 or 6 structure
②Insulation: irradiated cross-linked polyolefin
③Shielding: tinned copper braid
④Sheath: irradiated cross-linked polyolefin or rubber elastomer
IV. Global rail transit
Trusted choice
1Full qualification certification escort: international standard endorsement
As the only company in South China that has passed both ISO/TS 22163 international railway industry standards and CRCC certification, TST cable products simultaneously comply with global safety specifications such as BS6853, DIN5510-2, and ECE R118, providing a “pass” for project implementation.
2Practical verification of zero failure record
Serving more than 1,500 high-speed rail EMUs in China, with a long-term stable operation record; covering more than 20 city subways such as Beijing, Shanghai, and Guangzhou, and exported to international markets such as Argentina and Singapore, with actual combat data to verify product reliability.
3Closed loop from product to solution
Provide EN50264 (standard wall thickness) → EN50306 (thin wall) → fire-resistant cable → high temperature resistant cable → customized full series products to meet the needs of different scenarios.
V. Service empowerment
Value enhancement throughout the entire life cycle
TST cable drives value upgrades with the dual engines of “technology + service”:
Free experimental platform
Open electrical performance, mechanical fatigue, and combustion test laboratories to support user on-site verification and ensure product adaptability.
Customized R&D provides
Professional teams respond to special needs (such as 600℃ ultra-high temperature cables) at high speed and transform technology into scenario solutions.
Technology empowerment system
Provide cable selection training and installation guidance manuals to reduce engineering operation and maintenance costs and achieve full-chain support from delivery to operation and maintenance.
Conclusion
Millimeter-thin, carrying the weight of the future
From millimeter-level thin-wall technology to zero-fault records, TST cable has used ten years of focus to prove that safety and lightweight are not opposites. Under the wave of intelligent and green rail transit, Chinese cable brands are writing a new chapter with technological innovation. EN50306 cable is not only a technological breakthrough, but also a key cornerstone for rail vehicles to move towards an efficient and safe future – lightweight makes rail riding safer; thin-wall revolution injects new momentum into China’s manufacturing.
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