I. Product-Specific Details
1. Technical Specifications and Electrical Performance
The AXPK and AXPK-PLUS
Power Cables are engineered to excel in low-voltage electrical distribution systems, with a rated voltage of 0.6/1 kV. This voltage rating is a fundamental parameter that defines their operational boundaries: 0.6 kV represents the maximum permissible phase-to-ground voltage, while 1 kV indicates the phase-to-phase voltage limit. This range ensures compatibility with most standard low-voltage networks, making them suitable for a vast array of applications across residential, commercial, and light industrial sectors.
In terms of current-carrying capacity, these cables are designed to handle varying loads based on their conductor cross-sectional areas. Common conductor sizes range from 4 mm² to 120 mm², with each size offering a specific ampacity. For instance, a 10 mm² conductor can typically carry up to 57 A under normal operating conditions (30°C ambient temperature), while a 35 mm² conductor can handle around 105 A. The AXPK-PLUS, being the enhanced variant, often features a slightly higher current-carrying capacity due to its improved
Insulation Materials, which allow for better heat dissipation. This makes it more suitable for applications where continuous high loads are expected.
The electrical resistance of the
Aluminum Conductors is another critical specification. At 20°C, the resistance typically ranges from 4.61 Ω/km for a 4 mm² conductor to 0.193 Ω/km for a 120 mm² conductor. This low resistance ensures minimal power loss during transmission, contributing to overall energy efficiency in the electrical system. The insulation resistance of both cables is exceptionally high, often exceeding 1000 MΩ·km at 20°C, which is a testament to the quality of the halogen-free insulation materials used. This high insulation resistance prevents leakage currents and ensures reliable electrical isolation between conductors.
Capacitance is another important electrical parameter, especially for high-frequency applications. The AXPK and AXPK-PLUS cables have a capacitance between conductors of approximately 0.25 to 0.35 µF/km at 50 Hz, depending on the conductor size and insulation thickness. This relatively low capacitance minimizes signal attenuation and makes the cables suitable for use in systems where data or control signals are transmitted alongside power.
Dielectric strength is a measure of the insulation's ability to withstand high voltages without breakdown. The halogen-free insulation used in these cables provides a dielectric strength of at least 20 kV/mm, ensuring that the cables can safely withstand transient voltage surges that may occur in electrical networks, such as those caused by lightning strikes or switching operations.
2. Conductor and Insulation Materials
The conductors of the AXPK and AXPK-PLUS cables are made from high-purity aluminum (99.5% minimum purity). This choice of material offers several advantages over other conductors like copper. Aluminum has a lower density (2.7 g/cm³ compared to copper's 8.96 g/cm³), which results in lighter cables. This reduced weight simplifies transportation, handling, and installation, particularly in large-scale projects where the total weight of cables can be a significant factor. Additionally, aluminum is more cost-effective than copper, making the cables more affordable without compromising on performance.
To enhance
Flexibility, the
Aluminum Conductors are stranded. Stranding involves twisting multiple thin
Aluminum Wires together to form a single conductor. This design allows the cable to bend more easily, making it suitable for installations where routing around obstacles or through tight spaces is required. The stranding process also improves the conductor's mechanical strength, reducing the risk of breakage during installation or operation.
The insulation material used in both the AXPK and AXPK-PLUS cables is a halogen-free compound, which is a key distinguishing feature. Halogen-free insulations are typically based on materials like ethylene propylene rubber (EPR), cross-linked polyethylene (XLPE), or halogen-free flame-retardant (HFFR) polymers. These materials do not contain chlorine, bromine, fluorine, iodine, or astatine, which means they do not release toxic or corrosive gases when exposed to high temperatures or combustion.
The AXPK cable commonly uses a halogen-free HFFR insulation, which provides good flame-retardant properties. This insulation is designed to self-extinguish when the source of ignition is removed, preventing the spread of fire. It also offers excellent resistance to chemicals, oils, and moisture, ensuring long-term performance in various environments.
The AXPK-PLUS, being the upgraded version, often features a cross-linked polyethylene (XLPE) insulation. XLPE is formed by cross-linking polyethylene molecules through a chemical or radiation process, which creates a three-dimensional molecular structure. This cross-linking enhances the material's thermal stability, allowing the AXPK-PLUS to operate at higher temperatures (up to 90°C continuously, with short-term overloads up to 130°C) compared to the standard AXPK. XLPE insulation also offers superior mechanical strength, abrasion resistance, and dielectric properties, making the AXPK-PLUS more durable and reliable in demanding applications.
In addition to the insulation, both cables have an outer sheath made from a halogen-free material. The sheath provides additional protection against mechanical damage, moisture, and UV radiation. For the AXPK, the sheath is typically a halogen-free flame-retardant polymer, while the AXPK-PLUS may feature a more robust sheath material with enhanced resistance to impact and environmental stress.
3. Structural Design and Dimensions
The structural design of the AXPK and AXPK-PLUS cables is optimized for both performance and ease of installation. Both cables are available in various core configurations, including single-core, 2-core, 3-core, 4-core, and 5-core designs, to meet the specific requirements of different electrical systems. The
Multi-Core design allows for the transmission of multiple phases and neutral conductors within a single cable, reducing the number of cables needed and simplifying installation.
In a typical 4-
Core Cable, each conductor is individually insulated with the halogen-free material. The
Insulated Conductors are then twisted together in a helical pattern to form a
Compact Cable core. This twisting helps to reduce electromagnetic interference (EMI) between conductors and improves the cable's flexibility. A filler material, often made from a non-hygroscopic, halogen-free material, is used to fill the gaps between the insulated conductors, ensuring a round and stable cable core.
Over the twisted core, a binder tape is applied to hold the conductors together and provide additional structural integrity. The binder tape is typically made from a polyester material, which offers good tensile strength and resistance to heat and chemicals.
The outer sheath is then extruded over the binder tape, forming a protective layer around the entire cable. The thickness of the sheath varies depending on the cable size and application, but it is generally sufficient to provide adequate protection against mechanical damage and environmental factors. For example, a 4-core 35 mm² cable may have a sheath thickness of 1.2 mm, while a larger 120 mm² cable may have a sheath thickness of 1.6 mm.
The overall dimensions of the cables vary with conductor size and core configuration. For a 4-core 10 mm² AXPK cable, the outer diameter is approximately 20 mm, and the weight is around 0.8 kg/m. In contrast, a 4-core 35 mm² AXPK-PLUS cable may have an outer diameter of 28 mm and a weight of 1.8 kg/m. These dimensions are carefully designed to balance the need for compactness with the requirement for sufficient insulation and sheath thickness to ensure performance and durability.
The minimum bending radius is another important structural parameter, as it determines the cable's flexibility during installation. For fixed installations, the minimum bending radius is typically 12 times the outer diameter of the cable, while for flexible applications, it is 20 times the outer diameter. This ensures that the cable can be routed around corners and through tight spaces without damaging the insulation or conductors.
4. Special Applications
The AXPK and AXPK-PLUS cables, with their unique combination of features, are suitable for a wide range of special applications where safety, environmental compatibility, and reliability are paramount.
One of the primary applications is in public buildings such as hospitals, schools, and shopping malls. In these environments, the risk of fire and the potential for harm to large numbers of people make the halogen-free, low-smoke properties of the cables crucial. In the event of a fire, the cables do not release toxic gases, reducing the risk of respiratory injuries, and their low-smoke emission helps maintain visibility, facilitating evacuation and firefighting efforts.
High-rise residential buildings are another key application area. The vertical distribution of power in these buildings requires cables that are lightweight, easy to install, and safe. The aluminum conductors of the AXPK and AXPK-PLUS cables reduce the overall weight, making installation easier in vertical shafts. Their halogen-free insulation ensures that in case of a fire in one apartment, the spread of toxic gases to other floors is minimized.
Transportation systems, including underground railways, airports, and seaports, also benefit from these cables. Underground tunnels and enclosed spaces in transportation hubs are particularly vulnerable to the effects of fire, as ventilation is often limited. The halogen-free and low-smoke properties of the cables help ensure the safety of passengers and staff in these environments. Additionally, the cables' resistance to moisture and chemicals makes them suitable for use in areas exposed to harsh weather conditions or industrial pollutants.
Industrial facilities, such as manufacturing plants and warehouses, often require cables that can withstand harsh operating conditions. The AXPK-PLUS, with its XLPE insulation, is well-suited for these applications due to its high temperature resistance and mechanical strength. It can be used to power machinery, conveyors, and other industrial equipment, even in environments where there is exposure to oils, chemicals, or physical abrasion.
Renewable energy projects, such as solar power plants and wind farms, also utilize these cables. The halogen-free insulation makes them environmentally friendly, aligning with the sustainability goals of these projects. The lightweight nature of the aluminum conductors simplifies installation in remote or hard-to-reach locations, such as on rooftops or in wind turbine nacelles.
Data centers and telecommunications facilities require cables that can provide reliable power while minimizing EMI. The low capacitance and good insulation properties of the AXPK and AXPK-PLUS cables make them suitable for these applications, ensuring that power distribution does not interfere with sensitive electronic equipment.
Finally, the cables are used in infrastructure projects such as bridges, tunnels, and road lighting systems. Their durability and resistance to environmental factors ensure long-term performance in these critical applications, where downtime and maintenance can be costly and disruptive.
5. Production Process and Quality Control
The production process of the AXPK and AXPK-PLUS cables involves several precision stages, each of which is subject to strict quality control measures to ensure the final product meets the required specifications.
The first step is the production of the aluminum conductors. High-purity aluminum ingots are melted and cast into rods of a specific diameter. These rods are then drawn through a series of dies to reduce their diameter to the required size for the individual wires that make up the
Stranded Conductor. The drawing process ensures that the wires have a uniform diameter and smooth surface, which is essential for good electrical conductivity and insulation adhesion.
Once the individual wires are produced, they are stranded together using a stranding machine. The stranding process is carefully controlled to ensure that the wires are twisted at a consistent pitch, which affects the flexibility and mechanical strength of the conductor. During stranding, tension is applied to each wire to ensure a tight and uniform lay.
Next, the
Stranded Conductors undergo insulation extrusion. The halogen-free insulation material is fed into an extruder, where it is melted and forced through a die to form a continuous layer around the conductor. The extrusion process is monitored to ensure that the insulation thickness is uniform and meets the specified requirements. For the AXPK-PLUS cables with XLPE insulation, the insulated conductors are then subjected to a cross-linking process. This can be done using either chemical cross-linking (with peroxide initiators) or radiation cross-linking (using electron beams). The cross-linking process transforms the thermoplastic polyethylene into a thermoset material, enhancing its thermal and mechanical properties.
After insulation, the individual insulated conductors are assembled into the desired core configuration. For
Multi-Core Cables, the conductors are twisted together in a cabling machine, with filler materials added to ensure a round and stable core. A binder tape is then applied to hold the core together.
The final stage is the extrusion of the outer sheath. The sheath material is fed into an extruder and applied over the binder tape, forming a continuous protective layer around the cable core. The sheath extrusion process is monitored to ensure uniform thickness and adhesion to the underlying layers.
Throughout the production process, rigorous quality control checks are performed. These include:
Additionally, each cable is marked with important information such as the manufacturer's name, product type, voltage rating, conductor size, and production date for traceability.
II. General Product Information
1. Packaging Specifications
The AXPK and AXPK-PLUS cables are packaged to ensure their protection during storage, transportation, and handling. The packaging is designed to prevent damage to the cables from moisture, physical impact, and UV radiation.
For large quantities, the cables are typically wound onto wooden or steel reels. The reels are available in various sizes, with common dimensions ranging from 300 mm to 1200 mm in diameter, depending on the cable length and size. The cables are wound tightly onto the reels to prevent loosening and tangling during transportation. Each reel is then wrapped with a moisture-resistant plastic film to protect against humidity. For outdoor storage or long-distance transportation, the reels may be further covered with a heavy-duty tarpaulin.
The reels are labeled with detailed information, including the product name (AXPK or AXPK-PLUS), voltage rating (0.6/1 kV), conductor size, core configuration, length, weight, and manufacturer's information. This labeling ensures easy identification and verification of the product.
For smaller quantities or shorter lengths, the cables may be packaged in heavy-duty cardboard boxes. The boxes are lined with a moisture-resistant material to protect the cables from moisture. The cables are coiled neatly inside the boxes to prevent tangling, and the boxes are sealed with strong tape to ensure they remain closed during transportation. Like the reels, the boxes are labeled with all relevant product information.
In addition to the primary packaging, the cables may be accompanied by documentation such as product certificates, test reports, and installation guidelines. These documents are typically placed in a waterproof envelope and attached to the reel or box.
2. Transportation and Logistics
The transportation of AXPK and AXPK-PLUS cables is managed to ensure they reach their destination in good condition. The cables are classified as non-hazardous goods for transportation purposes, which simplifies logistics and reduces shipping costs.
For domestic transportation, road transport is commonly used. The reels or boxes are loaded onto trucks using forklifts or cranes, ensuring that they are securely fastened to prevent movement during transit. The trucks are equipped with appropriate loading ramps and securing devices to handle the heavy reels. Delivery times for domestic transportation typically range from 1 to 5 business days, depending on the distance from the manufacturing facility.
For international transportation, both sea and air freight options are available. Sea freight is more cost-effective for large quantities and long distances, with transit times ranging from 2 to 6 weeks, depending on the destination port. The reels are loaded into shipping containers, which are sealed and secured to prevent damage during ocean transport. Air freight is used for urgent orders, with delivery times ranging from 3 to 7 business days, but it is more expensive than sea freight.
During transportation, it is important to handle the cables with care. The reels should not be dropped or subjected to excessive impact, as this can damage the cable insulation or conductors. The cables should be stored in a dry, covered area during transit stops to prevent exposure to rain, snow, or direct sunlight.
3. Order Processing and Delivery
The order processing for AXPK and AXPK-PLUS cables is designed to be efficient and customer-friendly. Customers can place orders through various channels, including phone, email, or the manufacturer's online portal. When placing an order, customers are required to specify the product type (AXPK or AXPK-PLUS), voltage rating, conductor size, core configuration, length, and quantity.
Upon receiving an order, the manufacturer confirms the details with the customer within 24 hours, including the price, delivery date, and payment terms. If there are any discrepancies or special requirements, these are addressed and resolved before proceeding with production.
The lead time for production depends on the quantity and specifications of the order. For standard orders, the lead time is typically 7 to 14 business days. For large or custom orders, the lead time may be extended to 21 to 30 business days. The manufacturer keeps the customer informed of the production progress and any potential delays.
Once the cables are ready for delivery, the customer is notified, and the shipping documents (invoice, packing list, bill of lading) are provided. The cables are then dispatched through the chosen transportation method, and the customer is provided with tracking information to monitor the delivery status.
Delivery is considered complete when the customer receives the cables and confirms that they are in good condition. In case of any damage or discrepancies upon delivery, the customer is advised to contact the manufacturer immediately to arrange for a replacement or refund.
4. Sample Policy
To allow customers to evaluate the quality and performance of the AXPK and AXPK-PLUS cables, the manufacturer offers sample services.
Customers can request samples of the cables, which are typically 1-2 meters in length. The samples are provided free of charge, but the customer is responsible for the shipping costs. The samples are packaged in small boxes or envelopes and sent via courier services to ensure timely delivery.
The samples include all the key features of the full-length cables, allowing customers to inspect the conductor, insulation, and sheath materials, as well as test their flexibility and other physical properties. This helps customers make informed decisions before placing large orders.
5. After-sales Service
The manufacturer provides comprehensive after-sales service to ensure customer satisfaction with the AXPK and AXPK-PLUS cables.
A warranty is offered for the cables, typically ranging from 5 to 10 years, depending on the model and application. The warranty covers defects in materials and workmanship under normal operating conditions. If a cable fails within the warranty period, the manufacturer will replace or repair it free of charge.
Technical support is available to customers, including assistance with installation, troubleshooting, and maintenance. The manufacturer's team of technical experts can be contacted via phone, email, or online chat to provide guidance and answer any questions.
In case of any issues with the cables, the manufacturer has a dedicated customer service team that responds promptly to complaints and takes appropriate action to resolve them. This may include sending technical personnel to the site to assess the problem or arranging for the replacement of defective cables.
The manufacturer also provides training programs for customers, including installers and electricians, to ensure proper installation and handling of the cables. These training programs cover topics such as cable specifications, installation procedures, and safety precautions, helping to maximize the performance and lifespan of the cables.
In summary, the AXPK and AXPK-PLUS 0.6/1 kV halogen-free aluminum conductor power cables offer a combination of safety, reliability, and versatility, making them suitable for a wide range of applications. From their technical specifications and materials to their production process, packaging, transportation, and after-sales service, every aspect is designed to meet the needs of customers and ensure optimal performance in various environments. Whether in residential, commercial, industrial, or transportation settings, these cables provide a high-quality solution for low-voltage power distribution.
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