15kv 3core 35mm^2 XLPE Insulated 133% Insulation Armor Cable

Urban Power Distribution: In densely populated cities, this cable is extensively used to connect substations to residential and commercial areas. Its 15kv rating allows efficient power transmission over distances of up to several kilometers, while the 3core design simplifies installation in underground trenches or concrete ducts. The armor layer protects against damage from ground movement, construction activities, or rodent infestations—common risks in urban environments.

Industrial Facilities: Factories, refineries, and manufacturing plants rely on this cable to distribute power to production lines, heavy machinery, and auxiliary systems. The 35mm² conductors can handle the steady loads of industrial equipment, while the enhanced 133% insulation ensures safety in environments where electrical interference or moisture may be present. The armor layer resists mechanical damage from equipment vibration, chemical spills, and heavy foot traffic in industrial zones.

Commercial Complexes: Shopping malls, hotels, and office buildings require reliable power distribution to support lighting, elevators, HVAC systems, and backup generators. The cable’s compact 3core design fits easily into building risers and ceiling voids, and its 15kv rating allows it to supply power to multiple low-voltage transformers within the complex. The XLPE insulation’s resistance to fire spread (when combined with flame-retardant sheathing) adds an extra layer of safety in occupied spaces.

Renewable Energy Installations: Solar farms and wind parks often use this cable to collect power from arrays of panels or turbines and transmit it to central inverters or grid connection points. The cable’s weather resistance—enhanced by the armor and XLPE insulation—makes it suitable for outdoor use, withstanding UV radiation, rain, and temperature extremes. Its 15kv rating ensures efficient power transfer over the medium distances typical in such installations.

Infrastructure Projects: Bridges, tunnels, and airports utilize the cable for both primary power supply and emergency backup systems. In tunnels, the armor layer protects against damage from vehicle traffic or construction debris, while the 133% insulation minimizes the risk of electrical faults in humid, dusty conditions. The 3core design simplifies installation in confined spaces, reducing the need for extensive cable routing.

Conductors: The three 35mm² conductors are typically made from high-purity electrolytic copper or aluminum. Copper is preferred for its superior conductivity (approximately 58 MS/m) and malleability, ensuring low resistive losses and easy termination with connectors or lugs. Aluminum, a cost-effective alternative, offers lower weight (approximately 1/3 the density of copper) and is used in applications where weight reduction is critical, such as overhead installations or long-distance buried lines. Both materials are stranded—composed of multiple thin wires twisted together—to enhance Flexibility, allowing the cable to bend around corners or navigate tight spaces during installation without cracking.

XLPE Insulation: Cross-linked polyethylene (XLPE) is the Insulation Material of choice, renowned for its exceptional dielectric properties. XLPE is created by chemically or radiation-crosslinking polyethylene molecules, forming a three-dimensional network that improves thermal stability and mechanical strength. This cross-linking process enables the insulation to withstand operating temperatures up to 90°C, far exceeding the 70°C limit of standard polyethylene. XLPE also exhibits high resistance to moisture, chemicals, and aging, ensuring a service life of 25 years or more under normal conditions. The 133% insulation thickness—an extra 33% beyond standard requirements—provides a larger safety margin against insulation degradation, making the cable suitable for harsh environments where abrasion or partial damage is possible.

Binder and Sheath: Between the Insulated Conductors and the armor layer, a non-conductive binder (often a polyester tape) holds the three cores together, preventing movement and reducing friction during installation. The inner sheath, typically made from polyvinyl chloride (PVC) or low-smoke zero-halogen (LSZH) material, acts as a moisture barrier and separates the insulation from the armor. LSZH sheaths are preferred in enclosed spaces such as tunnels or buildings, as they release minimal toxic smoke and halogen gases in the event of a fire, enhancing safety.

Armor Layer: The armor is the cable’s outermost protective barrier, constructed from galvanized steel tape or wire. Steel tape armor (STA) is formed by wrapping overlapping steel strips around the inner sheath, providing excellent resistance to crushing and impact. Steel wire armor (SWA), consisting of helically wound steel wires, offers superior tensile strength, making it ideal for applications where the cable may be pulled or suspended, such as in vertical risers or overhead spans. The galvanization process coats the steel with a layer of zinc, preventing corrosion and extending the armor’s lifespan, even in damp or corrosive environments.

Reels: For standard lengths (500m, 1000m, or custom lengths up to 2000m), the cable is wound onto heavy-duty wooden or steel reels. Wooden reels are cost-effective and eco-friendly, suitable for domestic shipments, while steel reels offer enhanced durability for international transport or repeated use. Each reel features flanges (side discs) with a diameter of 1.2m to 2m, preventing the cable from slipping off during handling. The reels are fitted with steel hubs and lifting holes to facilitate movement using cranes or forklifts, and the cable ends are sealed with moisture-resistant caps to prevent water or debris ingress.

Coils: For shorter lengths (50m, 100m, or 200m), the cable is coiled and wrapped in multiple layers of heavy-duty polyethylene (PE) film. This film is UV-resistant and waterproof, protecting the cable from environmental damage during short-term storage or local delivery. Each coil is secured with polypropylene straps to maintain its shape and prevent unwinding.

Labeling: Every reel or coil is labeled with comprehensive information, including the cable type (15kv 3core 35mm² XLPE insulated 133% insulation armor), length, batch number, manufacturing date, and compliance certifications (e.g., "IEC 60502-2 Approved"). Additional labels indicate handling instructions, such as "Do Not Drop" or "Store in Dry Conditions," to guide proper storage and transportation.

Palletization: For bulk orders, multiple reels or coils are secured onto wooden pallets using steel straps, ensuring stability during transport. Pallets are shrink-wrapped to protect against dust and moisture, and each pallet is labeled with the total weight (typically 500kg to 1000kg) and number of units, simplifying inventory management.

Loading and Securing: Reels must be loaded horizontally onto trucks, trailers, or shipping containers to prevent deformation of the cable or reel flanges. They are secured using steel chains or ratchet straps attached to the vehicle’s anchor points, with wooden blocks placed between reels to prevent movement during transit. Coils are stacked vertically, with separators between layers to avoid crushing.

Temperature Control: While the cable is designed to withstand a wide temperature range (-40°C to 90°C), extreme temperatures during transportation can affect handling. In hot climates (temperatures above 40°C), the cable should be transported in shaded vehicles or containers to prevent the sheath from softening, which could lead to 粘连 (adhesion) between cable layers. In cold climates (temperatures below -20°C), the cable becomes stiffer, so loading and unloading must be done carefully to avoid cracking the armor or insulation.

Handling Equipment: Only certified equipment—such as forklifts with reel handlers or cranes with spreader bars—should be used to move reels. Manual handling of coils is limited to small lengths (≤50m) to prevent strain on workers and damage to the cable.

Documentation: Transport documents include a packing list, certificate of conformity, material safety data sheet (MSDS), and shipping manifest. For international shipments, additional documents such as customs declarations, import licenses, and compliance certificates (e.g., CE marking for the European Union) are required to ensure smooth clearance.

Domestic Shipping: For orders within the same country, delivery is typically via road transport (trucks or trailers) with delivery times ranging from 2 to 7 business days, depending on the distance from the manufacturing facility. Express delivery (1-2 business days) is available for urgent orders, using dedicated courier services.

International Shipping: For global customers, shipping options include sea freight (2-6 weeks) and air freight (3-7 days). Sea freight is cost-effective for large volumes (full container loads), while air freight is preferred for small orders or urgent deliveries. The cable is shipped from major ports (e.g., Shanghai, Rotterdam, Houston) with door-to-door or port-to-port service options.

Delivery Terms: Customers can choose from various Incoterms, including EXW (Ex Works), FOB (Free On Board), CIF (Cost, Insurance, and Freight), or DDP (Delivered Duty Paid). EXW requires the customer to arrange pickup from the factory, while DDP includes all transportation, insurance, and customs costs, delivering the cable directly to the customer’s site.

Tracking and Notification: Once shipped, customers receive a tracking number via email or SMS, allowing them to monitor the shipment’s progress through an online portal. Notifications are sent at key stages: when the shipment departs the factory, arrives at a port or distribution center, and is out for final delivery.

Sample Specifications: Samples are typically 1m to 5m in length, providing sufficient material for testing insulation thickness, conductor size, armor quality, and flexibility. Custom samples—such as sections with terminations or specific armor types—can be provided for specialized testing.

Cost and Lead Time: Samples are provided free of charge for qualified customers (e.g., utility companies, industrial contractors, or large-scale distributors), with the customer responsible only for shipping costs. For small-scale inquiries, a nominal fee (€50-€200) may apply, which is refundable upon placing a bulk order. Samples are shipped within 3-5 business days of the request.

Testing Support: Along with samples, customers receive a test report detailing key parameters, such as insulation resistance, conductor resistance, and armor thickness. For additional testing (e.g., fire resistance, chemical compatibility), the manufacturer can arrange third-party laboratory certifications at a discounted rate.

Warranty: The cable comes with a 15-year warranty covering defects in materials and workmanship. The warranty is valid for installations performed by certified electricians following the manufacturer’s guidelines and excludes damage from improper handling, installation, or external factors (e.g., lightning strikes, floods).

Technical Assistance: A team of experienced engineers is available to provide technical support via phone, email, or video conference. They offer guidance on installation best practices, termination methods, and troubleshooting common issues (e.g., insulation resistance drops, armor corrosion). Response times are guaranteed within 24 hours for urgent inquiries.

Repair and Replacement: In the event of a warranty claim, the manufacturer arrwarranty issues, repair services are available at competitive rates, with transparent cost estimates provided before work begins.

Training Programs: The manufacturer offers on-site and online training sessions for electricians, contractors, and facility managers. These programs cover cable handling, proper installation techniques (including bending radius guidelines and termination procedures), and maintenance best practices. Training modules also include safety protocols, such as how to test for live currents before handling and how to identify signs of cable degradation (e.g., cracks in the sheath or corrosion on the armor). Certificates are issued upon completion, ensuring that personnel are qualified to work with the cable.

Feedback and Continuous Improvement: Customer feedback is actively solicited through surveys, post-installation follow-ups, and annual reviews. This input is used to identify areas for improvement in product design, manufacturing processes, or service delivery. For example, if multiple customers report issues with armor corrosion in coastal environments, the manufacturer may develop a specialized marine-grade armor coating to address the problem. Such continuous improvement ensures that the cable remains aligned with evolving industry needs and customer expectations.

Spare Parts and Accessories: A range of compatible spare parts and accessories is available, including cable lugs, insulation tape, armor repair kits, and termination kits. These items are designed to work seamlessly with the cable, ensuring that repairs and installations meet the same quality standards as the original product. Spare parts are stocked in regional warehouses to ensure quick delivery, minimizing downtime for customers.