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    Pre-Assembled and Twisted Cable Vultylene 3X70+1X54.6 +2X16 mm2 Torsade Aluminum Cable

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    2025-07-29 08:13:18
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Pre-Assembled and Twisted Cable Vultylene 3X70+1X54.6 +2X16 mm2 Torsade Aluminum Cable
1. Overview: Integrated Power and Control in One Cable
The Pre-Assembled and Twisted Cable Vultylene 3×70+1×54.6+2×16 mm² Torsade Aluminum Cable redefines low-voltage (0.6/1kV) infrastructure with its all-in-one design. Combining power distribution, structural support, and control functionality in a pre-twisted bundle, this cable eliminates the need for separate Power Lines, messengers, and control wires—simplifying installations in residential complexes, industrial parks, and urban street lighting networks.
Engineered for 0.6/1kV systems, it delivers 210A total current through three 70mm² aluminum Power Cores, while a 54.6mm² torsade (messenger) ensures 80-meter spans between utility poles. Two 16mm² cores handle control and lighting signals, enabling smart grid features like remote dimming and load monitoring. Vultylene insulation, a proprietary blend optimized for outdoor durability, ensures reliable performance in temperatures from -30°C to 80°C, making it suitable for diverse climates worldwide.
2. Core Configuration: Power, Support, and Control
The cable’s Multi-Core design is a masterclass in functional integration, with each component tailored to a specific role:
  • 3×70mm² Power Cores: These Aluminum Conductors are the workhorses, responsible for delivering 210A of total current—enough to power 50+ households in a residential complex or a medium-sized industrial facility with machinery and lighting. Each 70mm² core carries 70A, with 61% IACS conductivity ensuring minimal power loss (≤2% over 100 meters). The aluminum’s lightweight properties (40% lighter than copper) reduce stress on poles and simplify handling during installation.

  • 1×54.6mm² Torsade Messenger: This steel-reinforced aluminum strand serves as both structural support and a neutral conductor. With 10kN tensile strength, it eliminates sagging over 80-meter spans, reducing the need for intermediate poles by 50% in new installations. The messenger’s aluminum outer layer adds conductivity, acting as a neutral in unbalanced three-phase systems to stabilize voltage.

  • 2×16mm² Control/Lighting Cores: These Dual Cores enable two-way communication for smart grid integration. One core handles street light dimming signals (cutting 30% off-peak energy use), while the other transmits data from sensors (e.g., power consumption, fault alerts) to central management systems. Their 16mm² cross-section supports 40A current, sufficient for powering auxiliary devices like CCTV cameras or pedestrian crossing lights.

3. Aluminum Conductors: Balancing Performance and Efficiency
All conductors use high-purity aluminum (99.5%+) with a temper grade of H19, chosen for its optimal blend of strength and conductivity. The 70mm² power cores feature a 37-strand design, where individual wires (0.3mm diameter) are twisted to enhance Flexibility—critical for navigating tight bends around poles or building corners. This stranding also improves fatigue resistance, withstanding wind-induced vibrations over 20+ years of service.
The 16mm² control cores use a 19-strand configuration, balancing flexibility with signal integrity. Their smaller diameter allows for tighter routing in junction boxes, while the aluminum’s natural oxide layer provides corrosion resistance—a key advantage in humid or coastal environments.
Compared to Copper Conductors of equal capacity, aluminum reduces the cable’s total weight by 60%, making it easier to transport and install. A 100-meter reel of this cable weighs 45kg, versus 75kg for a copper equivalent, cutting lifting equipment needs and installation time.
4. Vultylene Insulation: Advanced Protection for Outdoor Use
Vultylene—an ethylene propylene diene monomer (EPDM) blend—sets this cable apart with its superior insulation performance. Developed specifically for overhead low-Voltage Cables, it offers a unique combination of electrical, thermal, and environmental resistance:
  • Electrical Properties: With a dielectric strength of 25kV/mm, Vultylene exceeds the 0.6/1kV operating voltage by a factor of 40, providing a robust buffer against voltage spikes from lightning or transformer switching. Its low dielectric loss (<0.002 at 50Hz) minimizes energy waste, a critical factor in long distribution lines.

  • Thermal Range: The insulation remains flexible from -30°C (subzero winters) to 80°C (summer heatwaves), avoiding the brittleness of PVC in cold or the melting risk of rubber in heat. This ensures consistent performance in regions like northern Europe, the Middle East, and high-altitude areas with extreme temperature swings.

  • Environmental Resistance: UV stabilizers (3% by weight) prevent degradation from sunlight, a common issue in Overhead Cables that can lead to insulation cracking. Vultylene is also hydrophobic, repelling rain and dew to prevent water ingress—vital for maintaining signal integrity in the 16mm² control cores. In salt spray tests (ASTM B117), it retains 90% of tensile strength after 1,000 hours, outperforming standard EPDM by 20%.

Each core is individually insulated with Vultylene, color-coded for easy identification: brown/black/gray for power phases, white for the messenger, and blue/orange for control cores. This reduces wiring errors during installation, a critical safety measure in low-voltage networks.
5. Pre-Twisted Design: Reducing Interference and Installation Time
The cable’s pre-assembled, twisted configuration—where all cores are helically twisted at a 300mm pitch—delivers multiple advantages over loose, parallel-laid cables:
  • EMI Reduction: The twisted layout causes magnetic fields from the 70mm² power cores to cancel each other out, reducing electromagnetic interference (EMI) by 35%. This is crucial for the 16mm² control cores, which transmit low-voltage signals vulnerable to noise. In field tests, this design reduced signal loss in control lines from 12% (parallel cables) to less than 2%.

  • Mechanical Stability: Twisting binds the cores into a unified bundle, preventing separation during high winds or installation. This stability minimizes abrasion between cores, extending insulation lifespan by 10+ years compared to unbundled alternatives.

  • Installation Efficiency: Pre-twisting eliminates the need to twist cores on-site, cutting installation time by 40%. A 3-person crew can deploy 500 meters of cable in a day, versus 300 meters with loose cables. The bundle’s streamlined shape also reduces wind resistance by 25%, lowering stress on utility poles during storms.

  • Aesthetic Appeal: The neat, twisted bundle reduces visual clutter compared to multiple parallel cables, a key consideration in residential areas or historic districts with strict aesthetic guidelines.

6. Torsade Messenger: Structural Strength with Dual Functionality
The 54.6mm² torsade messenger is more than a support wire—it’s a multi-functional component that enhances the cable’s versatility:
  • Structural Support: The messenger’s steel-reinforced design (7-strand galvanized steel core wrapped in aluminum) provides 10kN tensile strength, enabling 80-meter spans between poles. This is particularly valuable in rural areas or wide industrial yards, where adding intermediate poles would increase costs by 30%.

  • Neutral Conductor: The aluminum outer layer conducts electricity, serving as a neutral in three-phase systems. This eliminates the need for a separate neutral core, simplifying the cable’s design and reducing material costs.

  • Corrosion Resistance: The aluminum cladding protects the steel core from rust, with a 50-year lifespan in coastal environments. In comparison, unprotected steel messengers require replacement every 15-20 years.

  • Grounding Capability: In emergency situations, the messenger can be used as a grounding conductor, providing a safe path for fault currents to dissipate.

7. Performance in Real-World Applications
The cable excels across diverse low-voltage scenarios:
  • Residential Complexes: The 3×70mm² cores power 50+ homes, while the 16mm² cores control community lighting and security systems. The messenger’s 80-meter spans reduce pole requirements in sprawling developments.

  • Industrial Parks: Withstands vibration from machinery and chemical exposure, delivering reliable power to factories while using control cores to monitor equipment loads.

  • Street Lighting Networks: The dual 16mm² cores enable individual lamp dimming and remote fault detection, reducing maintenance patrols by 50%. The messenger supports spans over wide boulevards without sagging.

  • Smart Grid Pilot Projects: Integrates with IoT sensors to transmit real-time data on power quality and energy use, facilitating demand-response programs that cut peak energy consumption by 15%.

8. Compliance and Safety Standards
The cable meets rigorous international standards, ensuring reliability and safety:
  • IEC 60502-1: Validates performance in low-voltage Power Cables, including insulation thickness, conductor resistance, and flame retardancy (self-extinguishing per EN 60332-1-2).

  • ASTM B230: Certifies the aluminum conductors’ conductivity and tensile strength, ensuring consistent current-carrying capacity.

  • EN 50525-2-21: Specifies requirements for cables in street lighting systems, confirming UV resistance and compatibility with lighting fixtures.

  • CE Marking: Indicates compliance with EU directives, allowing use in European markets without additional testing.

These certifications give utilities, contractors, and project managers confidence in the cable’s ability to meet local regulations and perform reliably for decades.
9. Maintenance and Lifespan
The cable’s robust design minimizes maintenance needs, a key advantage for operators managing large networks:
  • Visual Inspections: Annual checks for insulation damage (e.g., bird pecks, rodent bites) or loose connections are sufficient for most environments. The smooth Vultylene surface resists debris buildup, reducing cleaning requirements.

  • Thermal Monitoring: Every 5 years, infrared scans detect hot spots at termination points—an early warning of loose lugs that could cause overheating.

  • Lifespan: With proper installation, the cable lasts 20+ years, aligning with the typical 25-year lifespan of low-voltage infrastructure. This reduces lifecycle costs, as replacement is needed only once every two decades.

For utilities, this longevity translates to lower operational expenses, with fewer truck rolls and labor hours spent on maintenance.
10. Environmental and Economic Benefits
The cable aligns with global sustainability goals and delivers strong ROI:
  • Material Efficiency: Aluminum’s lower embodied energy (5% of copper’s production energy) reduces the carbon footprint by 60% compared to Copper Cables.

  • Reduced Infrastructure: 80-meter spans cut pole requirements by 50%, preserving green spaces and reducing concrete use.

  • Energy Savings: Low dielectric loss and smart control capabilities reduce energy waste by 10-15% annually in connected networks.

  • Lower Installation Costs: Pre-twisting and lightweight design cut labor costs by 40% compared to installing separate power, control, and messenger cables.

Over a 20-year lifecycle, these factors reduce total cost of ownership by 35% compared to traditional cable setups.
11. Conclusion: A Future-Proof Low-Voltage Solution
The Pre-Assembled and Twisted Cable Vultylene 3×70+1×54.6+2×16 mm² Torsade Aluminum Cable represents the future of low-voltage infrastructure. By integrating power, support, and control in a single, pre-assembled bundle, it simplifies installations, reduces costs, and enables smart grid functionality.
Whether powering residential complexes, industrial parks, or street lighting networks, it delivers reliability, efficiency, and versatility. For engineers designing new networks or upgrading aging infrastructure, this cable is more than a component—it’s a foundation for resilient, sustainable low-voltage systems.


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Ekle : Xiaokou Endüstriyel Kalkınma Bölgesi, Ningjin County, Xingtai City , Hebei Eyaleti, Çin

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