I. Product - related Information
(I) Specification Parameters
The specification parameters of the single - core 300mm²
Aluminum Core steel wire armored
Power Cable are the core basis for its stable power transmission. Each parameter is carefully designed to adapt to different power transmission scenarios.
This cable is of single - core design, with a conductor cross - sectional area of 300mm². This specification determines that it has a strong current - carrying capacity. The large cross - section can effectively reduce the resistance during current transmission and reduce power loss, which can meet the needs of high - power power transmission, such as the main power supply lines of large factories and the main lines of urban distribution networks. The single - core design simplifies the cable structure to a certain extent and also allows it to be more flexibly laid in some specific spatial layouts.
In terms of structural dimensions, in addition to the 300mm² conductor specification, the overall outer diameter of the cable is determined by the layers from the inside to the outside. The
Aluminum Conductor is wrapped with a cross - linked polyethylene (XLPE) insulation layer, followed by a steel wire armored layer, and the outermost layer is a polyvinyl chloride (PVC) sheath. The thickness of each layer is accurately calculated. This structure not only ensures the insulation performance and mechanical strength of the cable, but also controls the overall size within a reasonable range, making it easy to lay in limited spaces such as pipes and trenches.
In terms of applicable voltage, although the specific voltage level is not clearly marked, combined with its 300mm² conductor specification and structures such as steel wire armoring and XLPE insulation, it is usually applicable to medium and low - voltage power transmission scenarios. It can operate stably in conventional low - voltage distribution systems and some medium - voltage distribution environments, meeting the power transmission requirements under different voltage levels.
In addition, the bending radius of this cable also has clear standards. The bending performance of single -
Core Cables is relatively specific, and their minimum bending radius must comply with relevant specifications to avoid conductor damage or insulation layer rupture due to excessive bending during laying, ensuring the service life and operation safety of the cable.
The single - core 300mm² aluminum core steel wire
Armored Power cable shows significant applicability in various power transmission scenarios due to its unique specifications and structure, making it an ideal choice in some specific fields.
It can play an important role in the industrial field. The production equipment of large factories often requires high - power power supply. The 300mm² conductor specification of this cable can provide sufficient current - carrying capacity to meet the power demand of the equipment. The steel wire armored layer can effectively resist external impacts such as mechanical collisions and friction that may occur in factory workshops, protect the internal structure of the cable from damage, ensure the continuous and stable supply of electricity, and guarantee the smooth progress of production. For example, in places with complex production environments such as steel mills and machinery factories, this cable can function stably.
This cable also plays an important role in urban distribution network construction. The main lines of urban distribution networks need to transmit a large amount of electricity, and the laying environment is diverse, which may require underground direct burial or pipe laying. Its XLPE insulation layer has good insulation performance and aging resistance, and can adapt to underground humid, temperature change and other environments; the steel wire armored layer can bear soil pressure and external mechanical loads, preventing the cable from being damaged during laying and use. At the same time, the single - core design is convenient for flexible laying in the complex line layout of the distribution network, improving the convenience of line planning.
This cable also performs well in some outdoor power transmission scenarios. For example, the outgoing lines of outdoor substations need to withstand the tests of natural environments such as wind, sun, and rain. The
PVC Sheath has good weather resistance and can resist ultraviolet radiation and rain erosion; the steel wire armored layer can enhance the wind resistance of the cable, reduce the cable shaking and damage caused by wind force, and ensure that electricity is stably transmitted from the substation to various power - using areas.
In addition, this cable can also meet the needs in temporary large - scale power supply scenarios, such as temporary power supply lines for large - scale sports events and concerts. Its current - carrying capacity can support the electricity use of temporarily built large - scale equipment, and the steel wire armored layer makes it not easy to be damaged due to dragging and collision during temporary laying. It can be reused after disassembly, which is both practical and economical.
The material selection and style design of this cable are closely related to its performance and use. Each material is used to improve the reliability and applicability of the cable, and the style design takes into account both practicality and laying convenience.
The conductor is made of aluminum. Aluminum has the characteristic of light weight, which is particularly important for large - section single - core cables. If the 300mm² conductor is made of copper, the weight will increase significantly, which will not only increase the difficulty of transportation and laying, but also increase the cost. While ensuring a certain conductivity, aluminum effectively reduces the overall weight and cost of the cable. Moreover, the high - purity aluminum conductor after special treatment can reduce the impact of impurities on conductivity and meet the basic needs of high - power power transmission.
The insulation layer uses XLPE (cross - linked polyethylene), which is an excellent insulating material. Compared with traditional polyethylene insulating materials, XLPE has significantly improved heat resistance after cross - linking treatment. It can maintain stable insulation performance at a higher temperature, avoiding insulation failure caused by heat generated during cable operation. At the same time, XLPE has high mechanical strength, good impact resistance and chemical corrosion resistance, which can effectively protect the conductor and prevent damage to the conductor from external factors.
The armored layer adopts steel wire armoring (AWA). Steel wire has extremely high mechanical strength and can provide strong mechanical protection for the cable. When the cable is subjected to external extrusion, collision or tension, the steel wire armored layer can absorb most of the external force and protect the internal conductor and insulation layer. In addition, the steel wire armoring can also enhance the tensile strength of the cable. When laid overhead or over a long distance, it can bear the weight of the cable itself and reduce the risk of cable sagging or breaking due to gravity.
The outer sheath is made of PVC (polyvinyl chloride) material. PVC has good weather resistance and wear resistance. As the outermost protection of the cable, it can resist the erosion of external friction, rain, dust, etc., and extend the service life of the cable. At the same time, PVC material has a certain degree of
Flexibility, which is convenient for the cable to bend during laying, and its cost is relatively low, which can control the overall cost on the premise of ensuring the protection performance.
In terms of style, this cable has a single - core circular structure. The single - core design reduces the mutual interference inside the multi - core cable and is suitable for high - power and long - distance power transmission; the circular structure makes the force on the cable more uniform. Whether it is dragging during laying or bearing external pressure during use, the force can be distributed to the entire section, reducing the probability of local damage. Moreover, the circular appearance is convenient for cable winding, transportation and storage, and can better adapt to laying channels such as circular pipes.
(IV) Production Process
The production process of the single - core 300mm² aluminum core steel wire
Armored Power Cable is rigorous. Each link from raw material processing to finished product inspection has strict quality control standards to ensure that the final product meets the performance requirements.
The manufacture of
Aluminum Conductors is the first step in production. First, high - purity aluminum rods are selected and undergo quality inspection to ensure that their purity and mechanical properties meet the standards. Then, the aluminum rods are processed into
Aluminum Wires with the required diameter through a continuous extrusion process, which can ensure the dimensional accuracy and surface quality of the
Aluminum Wires. Then, multiple aluminum wires are stranded in a specific way to form a single - core conductor with a cross - sectional area of 300mm². During the stranding process, the stranding pitch and tension must be strictly controlled to ensure that the conductor structure is tight and round, and at the same time, the conductor has a certain flexibility to avoid breakage in subsequent processing and laying. After stranding, the surface of the conductor is treated to remove burrs and impurities, preparing for the subsequent wrapping of the insulation layer.
The extrusion process of the XLPE insulation layer is crucial. First, the XLPE particles are dried to remove the moisture in the particles to prevent defects such as bubbles in the insulation layer. The dried XLPE particles are sent to the extruder and melted into a fluid state at high temperature. Then, the molten XLPE is evenly wrapped around the outer layer of the aluminum conductor through an extrusion die to form an insulation layer. During the extrusion process, the extrusion temperature, pressure and speed must be accurately controlled to ensure that the insulation layer has a uniform thickness, a smooth surface and is closely combined with the conductor. After extrusion, the insulation layer is cross - linked. By heating, the XLPE molecules form a three - dimensional network structure, thereby significantly improving its heat resistance, mechanical strength and insulation performance.
The manufacturing process of the steel wire armored layer must ensure the firmness and uniformity of the armoring. High - strength steel wires are selected and first subjected to surface treatment, such as galvanizing, to enhance their corrosion resistance. Then, the steel wire is wound around the outer layer of the XLPE insulation layer at a certain angle and density through an armoring machine. During the winding process, the tension and winding pitch of the steel wire must be well controlled to ensure that the steel wires are arranged closely and evenly without overlapping, loosening or wrinkling. The overlapping part of the steel wire armored layer must be firmly combined to ensure the overall strength of the entire armored layer, which can effectively resist external mechanical impacts.
The extrusion of the PVC sheath is the last important process. PVC particles are added to the extruder, heated and melted, and then evenly wrapped around the outer layer of the steel wire armored layer through an extrusion die. During extrusion, it is necessary to ensure that the sheath is closely attached to the armored layer, with uniform thickness and no bubbles, cracks and other defects on the surface. The PVC sheath not only plays a protective role, but also can adapt to different ambient temperatures. It is not easy to become brittle at low temperatures and not easy to soften at high temperatures. Therefore, the control of process parameters during extrusion is particularly critical.
The finished product inspection link includes a number of strict tests. These include the conductor DC resistance test to check whether the conductivity of the aluminum conductor meets the standard; the insulation resistance test and power frequency withstand voltage test to verify the insulation performance of the XLPE insulation layer; the mechanical performance test, such as tensile test and bending test, to test the tensile and bending resistance of the cable; and the adhesion test of the armored layer to ensure that the steel wire armored layer will not fall off easily. Only when all test items meet the standards can the cable leave the factory as a finished product.
II. General Product Information
(I) Packaging
The packaging design of the single - core 300mm² aluminum core steel wire armored power cable focuses on protecting the cable from damage during storage and transportation, and at the same time takes into account convenience and clear identification, ensuring that the cable remains in good condition from the factory to the customer.
For coiled cables, large wooden or metal reels are usually used for packaging. The size of the reel is customized according to the length and diameter of the cable, with sufficient load - bearing capacity to stably support the weight of the cable. The cable is neatly wound on the reel, and appropriate tension is maintained during winding to prevent the cable from loosening, rubbing against each other or twisting. Both sides of the reel are equipped with solid baffles, which are higher than the winding height of the cable, effectively preventing the cable from sliding off both sides of the reel. The central axis of the reel is equipped with a hoisting device, which is convenient for hoisting operations during loading, unloading and transportation.
The outside of the reel is tightly wrapped with a thick plastic film to form a moisture - proof and dust - proof protective barrier, preventing the cable from being eroded by moisture and dust during transportation and storage. For cables transported over long distances or stored for a long time, a layer of waterproof canvas is covered outside the plastic film to further enhance moisture - proof and sun - proof capabilities and avoid aging of the PVC sheath due to direct sunlight.
The identification information on the package is complete and clear. Labels are pasted on the outer side of the reel baffle, indicating the product name, model, specification (single - core 300mm²), length, production batch number, production date, implementation standard, manufacturer name and contact information, etc. At the same time, some important warning signs are also marked on the labels, such as "Do not invert", "Handle with care", "Keep away from moisture and sunlight", "Stacking limit", etc., to remind transportation and storage personnel to operate in a standardized manner.
For small - length sample cables, sealed hard cartons or plastic buckets are used for packaging. Buffering materials, such as foam boards or soft plastics, are placed inside the cartons or plastic buckets to prevent the samples from being damaged due to collision during transportation. The basic information and warning signs of the product are also marked on the sample packaging for the convenience of customers' identification and handling.
(II) Transportation
The transportation of single - core 300mm² aluminum core steel wire armored
Power Cables must follow strict specifications to avoid cable damage due to improper operation during transportation and ensure that the cables are safely delivered to the destination.
The transportation method is selected according to factors such as transportation distance and quantity. For large - quantity and long - distance transportation, railway transportation or road transportation is usually adopted. For railway transportation, the reels wrapped with cables are neatly placed on the flat plate of the railway freight car, and the reels are firmly fixed on the carriage with steel wire ropes or fastening belts to prevent the reels from rolling or shifting during transportation. Leave an appropriate gap between the reels to avoid mutual collision. For road transportation, large trucks with sufficient load - bearing capacity are selected, and the carriage must be flat, clean and free of sharp debris. The fixing method of the cable reel is similar to that of railway transportation. At the same time, the driving speed must be controlled according to road conditions to avoid violent operations such as sudden braking and sharp turns.
For small - batch or sample cables, logistics express transportation can be used. The packaging must be strong cartons or wooden boxes, and buffer materials are filled inside to ensure that the cables will not shake or collide during transportation. When transporting by logistics, a well - reputed logistics company with experience in large - size cargo transportation should be selected, and the logistics company should be informed of the characteristics and precautions of the cables.
The precautions during transportation are crucial. Cables should avoid open - air transportation. If it is unavoidable, they must be covered with waterproof canvas to prevent sun and rain. During transportation, keep away from fire sources, heat sources and corrosive substances to avoid damage to the PVC sheath and XLPE insulation layer. When loading and unloading cables, special hoisting equipment must be used. The hoisting point should be selected at the central axis of the reel. Hoisting from the side of the reel is strictly prohibited to prevent the reel from deforming or the cable from sliding off. During handling, dragging and throwing of cable reels are prohibited to avoid severe impact on the cables.
Transport personnel must be familiar with the characteristics and transportation requirements of the cables, regularly check the fixing status and packaging integrity of the cables, and handle abnormalities in a timely manner. After arriving at the destination, they must check the cable packaging and appearance with the receiver to ensure they are intact before going through the handover procedures.
(III) Delivery
The delivery process of the single - core 300mm² aluminum core steel wire armored power cable focuses on efficiency and accuracy. Each link from order processing to goods delivery is strictly controlled to ensure that customers can receive products that meet the requirements on time.
After the customer places an order, the sales department will transmit the order information to the warehouse and production department immediately (for spot orders, it will directly notify the warehouse). After receiving the order, the warehouse immediately checks the inventory to confirm that the product model, specification, quantity, etc. are consistent with the order. For customized orders, the production department will arrange production according to the order requirements and notify the warehouse for storage in a timely manner after production is completed.
When preparing goods in the warehouse, a comprehensive inspection of the cables will be carried out, including checking whether the appearance is intact, whether the packaging meets the standards, and whether the identification is clear and accurate. At the same time, relevant product materials, such as product certificates, test reports, and user manuals, are sorted out and prepared to be sent with the goods.
Before delivery, the warehouse will contact the logistics and transportation company, determine the appropriate transportation method and vehicle according to the order quantity and transportation distance, inform the transportation company of the characteristics and transportation precautions of the cables, sign a transportation agreement, and clarify the responsibilities of both parties. For urgent orders, priority will be given to arranging delivery, and transportation resources will be coordinated to ensure that the goods are shipped within the time required by the customer.
After the goods are shipped, the warehouse will promptly feed back the logistics information (including the name of the transportation company, waybill number, contact information, etc.) to the customer to facilitate the customer to track the transportation status of the goods. At the same time, relevant delivery records, including delivery notes and logistics documents, are kept for future reference. If there are problems such as delayed delivery or damage to the goods during transportation, they will actively communicate and coordinate with the transportation company to solve the problems for customers in a timely manner.
(IV) Samples
In order to meet the customers' needs to understand and test the single - core 300mm² aluminum core steel wire armored power cable before formal purchase, the company provides a complete sample service to help customers intuitively understand the product performance and quality.
Customers can apply for samples through sales personnel, official websites or customer service hotlines. When applying, they need to provide the specification and quantity of the required samples (usually 1 - 2 sections, each with a length of 1 - 3 meters), as well as customer information, contact information and shipping address. Sample applications from customers with clear purchase intentions will be given priority.
Samples are prepared in strict accordance with the production standards of formal products to ensure that the samples are consistent with mass - produced products in terms of material,
Structure and Performance. After the sample is cut, both ends will be processed to remove burrs to prevent damage to the packaging or injury to personnel during transportation. At the same time, the samples are simply packaged in
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