LSZH Flame Retardant Aluminum Alloy Steel Wire Armoured MV Cable for Urban Grid & Green Infrastructure

WDZ-YJLHY23 is an energy-saving and environmentally friendly 8.7/15kV medium-voltage power cable, manufactured strictly in accordance with IEC 60840 and international medium-voltage power engineering design standards. It utilizes high-performance AA8000 series compact stranded aluminum alloy conductors, high-purity XLPE cross-linked polyethylene insulation, a low-smoke halogen-free inner buffer layer, and a 23-type high-density steel wire armor structure, complemented by a WDZ-grade low-smoke halogen-free flame-retardant outer sheath.

Unlike traditional copper-core and ordinary aluminum-core medium-voltage cables, this product integrates lightweight energy saving, excellent flame-retardant safety, halogen-free environmental protection, and high tensile strength, effectively optimizing the overall project investment cost while ensuring stable medium-voltage power transmission capacity. The optimized alloy conductor formula solves the common stability defects of traditional aluminum conductors under long-term thermal cycling operation.

This cable is armored with type 23 steel wire, possessing excellent axial tensile strength and radial compressive strength, effectively adapting to vertical laying, overhead crossing laying, and underground laying in complex terrain. Having passed high-voltage partial discharge tests, flame-retardant combustion tests, long-term thermal aging tests, and multi-climate environment durability tests, it has become a preferred high-performance, cost-effective medium-voltage cabling solution for global power investors, green engineering contractors, and municipal power grid renovation designers, and is widely used in energy-saving medium-voltage power transmission and distribution systems.

Utilizing internationally recognized AA8000 aluminum alloy material and scientifically proportioned metal components, it exhibits superior conductivity and significantly improved creep resistance compared to ordinary pure aluminum conductors. Even under long-term energization and temperature variations, it prevents loose connections and excessive temperature rise, ensuring stable current transmission. This significantly reduces raw material input costs and the overall load-bearing pressure on cable supports and laying accessories while maintaining the same current carrying capacity.

High-density cross-linked polyethylene insulation achieves extremely low partial discharge levels and stable dielectric loss values. It effectively resists medium-voltage surge impacts and long-frequency voltage fluctuations, significantly slows down the aging rate of internal insulation, and maintains stable insulation performance under all-weather operating conditions. The overall design life exceeds 30 years, reducing the frequency of maintenance and replacement of intermediate circuits in medium-voltage power grid systems.

All insulation and sheathing materials use halogen-free, environmentally friendly formulas. In the event of an accidental fire, it will not release toxic or corrosive gases, and smoke emissions are kept to a low level. It protects surrounding auxiliary electrical equipment and building facilities from chemical corrosion and maintains unobstructed evacuation routes, fully complying with global green building and public space electrical safety construction standards.

Compared to steel tape armored medium-voltage cables, Type 23 dense steel wire armor has stronger longitudinal tensile strength, perfectly meeting the load-bearing requirements of vertical installation in shafts, mountainous areas, and long-distance suspended installations. Simultaneously, it effectively resists external soil compression, construction collisions, and rock friction damage, greatly expanding the applicable installation environment range for medium-voltage lines.

The optimized low-smoke halogen-free composite sheath offers excellent cold resistance, heat resistance, moisture resistance, and ozone aging resistance. It operates stably even in hot tropical regions, frigid northern regions, humid coastal areas, and arid inland regions, without performance degradation due to long-term outdoor exposure or complex atmospheric environments.

The unified outer diameter design and internal electrical parameter standards ensure high compatibility with mainstream international medium-voltage cold-shrink terminals, cable joints, ring main units, and substation power distribution equipment. Global electrical engineers can utilize a universal design approach, accelerating project drawing approval, on-site construction, and system commissioning.

• Urban Power Grid Renovation and Expansion

  Urban medium-voltage main lines, community centralized distribution lines, urban ring network power supply lines, and dedicated interconnection lines for regional power grids.

• Green Energy Power Plant Supporting Wiring

  Large-scale photovoltaic power plant grid-connected medium-voltage collection lines, wind farm medium-voltage transmission lines, and internal distribution lines for energy storage power plants.

• Industrial Park Energy-Saving Power Distribution

  Large-scale industrial park medium-voltage incoming lines, main power supply lines for light industrial manufacturing areas, and energy-saving transformer lines for old factory power systems.

• Transportation Infrastructure Auxiliary Power Systems

  Highway service area medium-voltage power supply, suburban railway supporting power supply lines, and medium-voltage fixed laying lines within municipal utility tunnels.

• Commercial and Residential Cluster Power Engineering

  Large-scale residential cluster medium-voltage centralized distribution, commercial and residential park regional power transmission, and stable power supply lines for integrated living areas.

• Environmentally Friendly Public Construction Projects

  Scenic area supporting power facilities, environmentally friendly industrial zone power distribution, and other projects with high requirements for energy conservation, environmental protection, flame retardancy, and safety.

A local power bureau carried out an old medium-voltage power grid upgrade project, selecting WDZ-YJLHY23 alloy conductor medium-voltage cables in batches. These cables are lightweight, effectively reducing the installation load on urban underground utility tunnels, and their stable alloy conductivity adapts to the local high-temperature seasonal climate. The project successfully reduced total material and construction costs while meeting daily stable power supply needs.

A large-scale wind power base construction project in the northern cold region adopted our WDZ-YJLHY23 medium-voltage cables. This product has passed low-temperature performance verification, stably adapting to the local harsh winter laying and operating conditions. The steel wire armored structure meets the requirements for outdoor crossing laying, ensuring long-term reliable power collection and grid connection for wind turbine generators.

In the construction of a large-scale eco-tourism industrial park, the project team selected this series of low-smoke halogen-free flame-retardant medium-voltage cables. Its environmentally friendly material properties and excellent fire safety performance have successfully passed the local green environmental protection project acceptance, realizing the safe and energy-saving operation of the medium-voltage power distribution network in the entire park.

• Reasonable Calibration of Alloy Conductor Current Carrying Capacity

  During the design phase, the conductivity characteristics of aluminum alloy conductors should be fully considered. Combined with laying spacing, ambient temperature, and burial environment, accurate current carrying capacity calibration and flow field distribution design should be completed. We provide a free, customized current carrying capacity parameter table for alloy medium-voltage cables.

• Scientific Arrangement of Vertical Laying Tension

  During vertical laying, cable fixing points should be reasonably set according to the cable's tensile strength index, and the length of each laying section should be controlled to avoid excessive concentrated tension that could lead to structural layer separation.

• Recommendation for Flame-Retardant Circuit Isolation Arrangement

  It is recommended to lay WDZ flame-retardant cables in independent dedicated cable trenches, maintaining a safe distance from ordinary power cables to reduce interference from external fire sources to critical power supply circuits.

• Unified Performance Standards for Supporting Accessories

  Use low-smoke halogen-free (LSZH) flame-retardant medium-voltage terminals and connectors, ensuring that their flame retardancy and environmental protection levels are consistent with the main cable to ensure the overall safety performance of the entire power line system.

• Optimized Corrosion Protection in Humid and Salt Spray Environments

  For coastal areas and long-term humid underground environments, customized anti-corrosion sheaths are preferred to enhance the cable's resistance to salt spray corrosion and extend its service life.

• Pre-Delivery and On-Site Acceptance Specifications

  Before cable laying, strict insulation resistance testing and high-voltage withstand voltage testing are performed, and flame retardant performance is sampled and tested according to local industry standards to ensure successful project completion and safety registration.

All WDZ-YJLHY23 medium-voltage cables are manufactured according to a complete medium-voltage cable production process. From incoming alloy raw material inspection, XLPE three-layer co-extrusion processing, uniform steel wire armoring, to finished product high-voltage performance testing and flame-retardant performance sampling testing, rigorous quality inspections are implemented throughout.

The products have obtained CE market access certification, IEC standard certification, RoHS environmental certification, and multiple regional power industry access qualification certifications. We can provide complete type test reports, flame-retardant performance test documents, raw material composition certificates, and official factory inspection reports, fully meeting the requirements for international project bidding qualification review, engineering document filing, and cross-border customs clearance document submission.

• We are a professional manufacturer of medium-voltage alloy cables, possessing mature AA8000 alloy cable production technology and a stable, high-quality raw material supply chain, enabling us to support large-volume orders and guarantee consistent, regular delivery.

• We have a professional medium-voltage electrical technology team providing comprehensive one-stop services, including alloy cable model selection, power distribution scheme optimization, laying process guidance, and overseas remote technical consultation support.

• We offer flexible, customized services, adjusting parameters such as flame retardant rating, sheath environmental resistance, and overall cable dimensions according to different national power industry standards and project-specific requirements.

• We conduct full-process offline performance testing before delivery, focusing on insulation stability and alloy conductor conductivity uniformity to fundamentally avoid potential risks affecting the operation of medium-voltage systems.

• We use professional reinforced export packaging to effectively protect the steel wire armor and internal insulation structure from damage during long-distance sea transport, and provide a complete set of export trade support documents.

• Our energy-saving and low-carbon product positioning aligns with the global trend of sustainable power grid construction, helping customers win green project policy support and industry certifications.

• Establish a long-term and stable global partner service system to promptly respond to issues related to product application matching, operation and maintenance, and project after-sales service, and build a stable and mutually beneficial long-term cooperative relationship.