I. From the Perspective of the Product Itself
(I) Specification Parameters
This 3-core Steel Wire Armoured (SWA) cable has a specification of 3X240mm², with various parameters carefully designed to meet the power transmission needs in different scenarios.
In terms of conductors, there are two options: copper and aluminum. The
Copper Conductor has a copper content of over 99.9%, and this high purity ensures its excellent conductivity, with a conductivity of more than 58MS/m. Under rated working conditions, the rated current-carrying capacity of the copper conductor is 420A, which can easily meet the power transmission needs of high-power equipment. The
Aluminum Conductor weighs only 1/3 of the copper conductor of the same specification. Although its conductivity is slightly lower than that of copper, about 37MS/m, its rated current-carrying capacity can also reach 320A, which is suitable for medium and low-load circuits and can significantly reduce the load and cost during installation.
The performance parameters of the insulation layer are also excellent. The cross-linked polyethylene (XLPE) insulation layer has a wide temperature resistance range, which can maintain stable performance between -40℃ and 90℃, enabling the cable to work normally in cold northern regions and high-temperature industrial environments. Its insulation resistance is ≥1000MΩ, and the high insulation resistance characteristic can effectively resist the adverse effects of high-voltage impact and temperature fluctuations, ensuring the safety of power transmission. The outer polyvinyl chloride (PVC) sheath has a tensile strength of ≥12MPa, with sufficient mechanical strength to withstand a certain degree of stretching and extrusion, providing reliable protection for the internal structure of the cable.
The steel wire armouring layer is made of high-carbon steel, with an armouring density of ≥90%. This high-density armouring structure endows the cable with excellent mechanical protection capabilities, which can withstand external forces such as extrusion, stretching and impact, greatly improving the durability of the cable in complex laying environments.
The rated voltage of the cable is 10kV, and this voltage level makes it suitable for medium and high-voltage power transmission scenarios, which can meet the voltage requirements for power transmission in industrial plants, high-rise buildings and other places. At the same time, the minimum bending radius of the cable is 15 times the diameter of the conductor, ensuring a certain degree of
Flexibility during installation and facilitating laying in narrow spaces.
(II) Characteristic Applications
With its excellent performance parameters, this 3-core steel wire
Armoured Cable has characteristic applications in many fields.
In industrial plant power distribution, there are many equipment in industrial plants with large power differences, and there are complex environments such as various mechanical vibrations and dust pollution. The copper conductor model of the cable can meet the power transmission needs of large motors, furnaces and other high-power equipment, while the aluminum conductor model can be used for line connection of some medium and low-power auxiliary equipment. The steel wire armouring layer can effectively resist vibrations generated during equipment operation and collisions from external objects, and the XLPE insulation layer and
PVC Sheath can resist erosion from dust and oil, ensuring stable and reliable power supply in the plant.
For the main lines of high-rise buildings, high-rise buildings have large electrical loads, limited line laying space, and extremely high requirements for the safety and durability of cables. The 3-core structure of this cable is suitable for three-phase power transmission, which can meet the simultaneous power demand of elevators, central air conditioners, lighting and other equipment in high-rise buildings. Its armouring layer can protect the cable from damage when laid in narrow spaces such as walls and floors, and the rated voltage of 10kV can reduce line loss and ensure the quality of power supply for each floor of the high-rise building.
In outdoor overhead power transmission projects, cables need to be exposed to the natural environment, facing various tests such as wind, sun, rain and low temperature. The PVC sheath of the cable has good weather resistance, which can resist ultraviolet radiation and rain erosion, and the steel wire armouring layer can enhance the tensile strength of the cable, adapting to the tensile requirements during overhead laying. Whether connecting substations with surrounding areas or transmitting power in remote areas, it can work stably.
Underground power transmission engineering is also one of its important application scenarios. The underground environment is humid, and there may be problems such as soil corrosion and external pressure. The armouring layer of the cable can withstand soil pressure and mechanical impact during construction, and the moisture-proof performance of the XLPE insulation layer and the corrosion resistance of the PVC sheath can protect the cable from underground moisture and chemical substances in the soil, ensuring long-term stability of underground power transmission.
In addition, in some large public places, such as large shopping malls, gymnasiums, etc., the cable can be used as the main power supply line. Its high current-carrying capacity and reliable protection performance can ensure the safety of power supply in places with large crowds, avoiding safety accidents caused by power failures.
(III) Material and Style
Conductor Material: There are two choices for Cable Conductors: copper and aluminum. The copper conductor is made of high-purity electrolytic copper with a copper content of over 99.9%. High-purity copper has excellent conductivity, which can transmit power efficiently and reduce energy loss. At the same time, copper has good ductility and toughness, which is easy to be drawn into uniform wires during processing, and can withstand a certain degree of bending and stretching without breaking during installation and use. Moreover, copper has good chemical stability, is not easy to be corroded in general environments, and can maintain good conductivity for a long time.
The aluminum conductor is made of high-purity aluminum material, and its light weight significantly reduces the overall weight of the cable, which not only reduces transportation and installation costs, but also reduces the load requirements on the laying brackets. Although the conductivity of aluminum is not as good as that of copper, through reasonable design and cross-sectional area selection, it can meet the transmission needs of medium and low-load circuits. At the same time, a layer of oxide film will form on the surface of aluminum, which has certain corrosion resistance and can protect the aluminum conductor from external corrosion to a certain extent.
Insulation layer material: The insulation layer adopts an XLPE and PVC composite structure. XLPE material has excellent insulation performance, and its molecular structure forms a three-dimensional network structure after cross-linking, which greatly improves its temperature resistance, mechanical strength and chemical stability. It can maintain good insulation effect in high-temperature and high-pressure environments, effectively preventing current leakage.
As the outer insulation and protection material, PVC sheath has good processing performance and mechanical performance. It can not only further enhance the insulation effect of the cable, but also resist external mechanical damage, chemical corrosion and moisture intrusion. PVC material has relatively low cost and good weather resistance, making it suitable for use in various environments.
Armouring layer material: The armouring layer is made of high-carbon steel, which has the characteristics of high strength and high hardness. The steel wire made after processing has excellent tensile, compressive and impact resistance. The armouring layer formed by weaving or winding these steel wires on the outer layer of the cable according to a certain density can provide solid mechanical protection for the cable, enabling it to adapt to various harsh laying environments.
In terms of style design, the cable is overall in a circular structure, which makes each part of the cable bear force evenly, reduces resistance during laying, and is convenient for passing through pipes and trunking. The 3-core conductors are symmetrically distributed inside the cable, and the middle is filled with insulating material to ensure insulation and stability between each core. The steel wire armouring layer tightly wraps the outside of the insulation layer, and the outer layer is covered with a PVC sheath, forming a layered and compact whole, which not only ensures performance, but also is easy to identify and install.
(IV) Production Process
The production process of this 3-core steel wire armoured cable is complex and rigorous, ensuring the quality and performance of the product.
In the conductor manufacturing link, for
Copper Conductors, first, high-purity electrolytic copper ingots are made into copper rods through heating, rolling and other processes, and then the copper rods are drawn into
Copper Wires of the required diameter through a wire drawing machine. During the wire drawing process, it is necessary to accurately control the wire drawing speed and die size to ensure that the diameter of the copper wire is uniform and the surface is smooth. After that, multiple copper wires are stranded, and during stranding, the stranding pitch and tension should be controlled to make the conductor structure tight and improve its flexibility and conductivity.
The manufacturing process of
Aluminum Conductors is similar to that of copper conductors. First, aluminum ingots are processed into aluminum rods, then drawn into
Aluminum Wires, and then stranded. However, due to the characteristics of aluminum, more attention should be paid to controlling process parameters during wire drawing and stranding to avoid
Aluminum Wire breakage.
The insulation layer is manufactured by extrusion process. First, the XLPE material is heated and melted, and then evenly coated on the outside of the
Stranded Conductor through an extruder to form the first insulation layer. During the extrusion process, it is necessary to strictly control temperature, pressure and speed to ensure that the insulation layer has uniform thickness, smooth surface, and is closely combined with the conductor, without bubbles, impurities and other defects. Subsequently, the core coated with the XLPE insulation layer is cross-linked, usually by means of warm water cross-linking or steam cross-linking, so that the XLPE molecules form a stable three-dimensional network structure, improving its temperature resistance and mechanical strength.
Next is the production of the armouring layer. High-carbon steel wires are wound on the outside of the
Insulated Core through a special armouring machine according to a certain density and angle. During the winding process, it is necessary to ensure that the steel wires are arranged neatly and the tension is uniform, and the armouring density meets the requirement of ≥90% to ensure the protection effect of the armouring layer.
Finally, the outer PVC sheath is extruded. The PVC material is heated and melted, and then coated on the outside of the armouring layer through an extruder. It is also necessary to accurately control the process parameters to ensure that the sheath has uniform thickness, flat surface, and is closely combined with the armouring layer, playing a further protective role.
In the entire production process, multiple quality inspection procedures are set up. The diameter, resistance, tensile strength, etc. of the conductor are tested; the thickness, insulation resistance, temperature resistance, etc. of the insulation layer are tested; the density, adhesion, etc. of the armouring layer are inspected; the overall performance of the finished cable is tested by pressure test, mechanical performance test, etc. Only products that pass all inspections can leave the factory for sale.
II. From the Perspective of General Product Information
(I) Packaging
To ensure that the cable is not damaged during transportation and storage, this 3-core steel wire armoured cable adopts a reliable packaging method.
Cables are usually packaged in rolls. According to the length and weight of the cable, a strong wooden cable reel is selected. The wooden cable reel has the characteristics of high strength and good stability, and can withstand the weight of the cable and the impact force during transportation. The size of the cable reel is determined according to the specification of the cable to ensure that the cable can be neatly wound on it, avoiding twisting, knotting and other situations.
After the cable is wound on the cable reel, a thick layer of waterproof plastic film is wrapped around its outside. This layer of plastic film can effectively block moisture and dust from entering the cable, protecting the insulation layer and armouring layer of the cable from pollution and erosion. For cables that need long-distance transportation or long-term storage, a layer of linen or woven bag is wrapped outside the plastic film to further enhance the protective performance of the packaging and resist external friction and collision.
On the side of the cable reel, relevant product information will be clearly marked, including product name, specification model (3X240mm²), conductor material (copper or aluminum), rated voltage, length, production date, production batch number, implementation standard, etc. This information is convenient for users to identify and check during receipt and storage. At the same time, warning signs such as "Do not invert", "Handle with care", "Moisture-proof and sun-proof" will be printed to remind operators to pay attention to correct operation methods during handling and storage.
(II) Transportation
The transportation process of the cable needs to strictly follow relevant regulations to ensure the safety of the product.
In the selection of transportation tools, according to the quantity, specification and transportation distance of the cables, trucks or trailers with certain carrying capacity are usually selected. For long-distance transportation, closed vehicles are preferred to avoid the cable being directly affected by the external environment, such as rain, direct sunlight, dust, etc. The compartment of the transport vehicle should be kept clean, dry and flat, without sharp objects and corrosive substances, to prevent damage to the cable packaging and the cable itself.
When loading cables, special hoisting equipment is used to place the cable reel stably in the compartment, avoiding tilting, inverting or mutual extrusion. For multiple cable reels, the placement position should be reasonably arranged, a certain gap should be left between the cable reels, and ropes, steel belts, etc. should be used to firmly fix them on the compartment to prevent displacement or collision due to vehicle bumps during transportation.
During transportation, the driver should drive carefully, avoid violent operations such as sudden braking and sharp turning, and reduce the shaking and impact of the cable reel. At the same time, corresponding protective measures should be taken according to the weather conditions. In rainy days, it is necessary to ensure that the compartment is well sealed to prevent rainwater from entering; in high-temperature weather, it is necessary to avoid the cable being exposed to the sun for a long time, and sunshade measures can be taken; in low-temperature weather, attention should be paid to preventing the cable from being affected by freezing.
During transportation, the transportation status of the cable should be checked regularly to see if the cable reel is firmly fixed and the packaging is intact. If any abnormal situation is found, stop and handle it in time to ensure that the cable can be safely delivered to the destination.
After arriving at the destination, use appropriate loading and unloading equipment to unload the cable reel from the compartment, and rough loading and unloading is strictly prohibited. Place the cable reel on a flat and dry site and store it in accordance with storage requirements.
(III) Delivery
The delivery process of the cable is rigorous and standardized to ensure that the products can be delivered to customers accurately and timely.
After the customer places an order, the sales department will review the order information immediately, including the product specification model, conductor material, quantity, delivery address, contact information, delivery time, etc. During the review process, if there are doubts or unclear points in the order information, they will communicate with the customer in a timely manner to confirm, ensuring the accuracy of the order information.
After the order is approved, the sales department will transmit the order information to the warehouse department. Warehouse staff prepare goods according to the order information, and take the corresponding cable products from the warehouse in accordance with the first-in-first-out principle. In the process of preparing goods, it is necessary to carefully check the packaging, logo, specification, etc. of the cable to ensure that the prepared products are consistent with the order requirements, and the packaging is intact and free of quality problems.
After the goods are prepared, the warehouse department will move the products to the delivery area and notify the logistics department to arrange transportation. The logistics department selects a suitable logistics company and transportation method according to factors such as the delivery address and delivery time, and signs a transportation agreement with the logistics company to clarify the rights and obligations of both parties. At the same time, provide the logistics company with detailed product information, including product name, specification model, quantity, shipping address, receiving address, contact person, etc., to ensure that the logistics company can carry out transportation accurately.
Before the product is shipped, the warehouse staff will conduct a final check on the product, and after confirmation, load it into the transport vehicle and go through the handover procedures. At the same time, the logistics tracking number, logistics company information, etc. will be fed back to the customer in a timely manner, facilitating the customer to check the transportation status of the goods.
For urgent orders, the company will start the expedited processing process, give priority to arranging production and goods preparation, and ensure delivery within the time required by the customer. During the delivery process, relevant departments will maintain close communication to promptly solve problems arising in the delivery process and ensure the smooth progress of delivery.
After the delivery is completed, the sales department will conduct a return visit to the customer to confirm whether the customer has received the goods, whether the quantity and quality of the goods meet the requirements, collect the customer's feedback, and continuously improve the quality of delivery services.
(IV) Samples
To allow customers to fully understand the performance and quality of the product before purchasing, the company provides sample services.
Customers can apply for samples through various channels such as the company's official website, sales hotline, and email. When applying, it is necessary to provide the specification model (3X240mm²), conductor material (copper or aluminum), quantity of the required samples, and the customer's basic information, such as company name, contact person, contact information, address, etc.
After receiving the sample application, the company will review the application within 1-3 working days. After approval, samples will be prepared according to the customer's needs. The specification of the sample is usually 1-5 meters, and the specific length can be adjusted according to the customer's requirements. The production standard of the sample is consistent with that of the mass-produced products to ensure that the sample can truly reflect the performance and quality of the product.
After the samples are prepared, the company will choose an appropriate express delivery method to send the samples to the customer. For domestic customers, well-known express companies such as SF Express, YTO Express, and ZTO Express are generally used to ensure that the samples can be delivered quickly and safely; for foreign customers, international express or freight forwarders are used for delivery. The samples themselves are usually free, but customers need to bear the express delivery fees for the samples. If the customer has a bulk purchase plan later, the company will consider waiving the express delivery fees for the samples according to the actual situation.
After receiving the samples, customers can conduct various performance tests on the samples, such as conductivity tests, insulation performance tests, mechanical strength tests, etc. The company will provide customers with necessary technical support and test guidance to answer questions encountered by customers during the testing process. Through sample testing, customers can more intuitively understand the performance and quality of the product, so as to make a decision on whether to purchase in bulk.
(V) After-sales Service
The company provides a complete after-sales service for this 3-core steel wire armoured cable to protect the interests of customers.
The company promises that all sold cable products comply with relevant national standards and industry specifications, and provides a 10-year quality guarantee period. During the quality guarantee period, if the product fails due to its own quality problems, customers can apply for after-sales service from the company with the purchase certificate. The company will provide customers with free repair, replacement or return services according to the fault situation to ensure that the legitimate rights and interests of customers are protected.
When customers encounter problems during product installation and use, they can contact the after-sales service department through multiple channels such as the company's after-sales service hotline, official website online customer service, and email. After-sales service personnel will respond to customers' needs within 24 hours, patiently answer customers' questions, and provide professional technical guidance. For problems that require on-site solutions, the company will arrange professional technical personnel to arrive at the site within the agreed time for on-site inspection and handling, ensuring that the problems are resolved in a timely and effective manner.
The company also provides customers with product installation guidance services. Before customers install the cable, after-sales service personnel can provide detailed installation suggestions and precautions according to the customer's installation environment and needs, such as laying methods, connection methods, and protective measures, to help customers install the cable correctly and avoid affecting the performance and service life of the product due to improper installation.
In addition, the company will conduct regular return visits to customers to understand the usage of the products and customer satisfaction, collect customers' opinions and suggestions. Based on customers' feedback, the company continuously improves product quality and service levels to enhance customer experience. At the same time, it provides customers with product maintenance knowledge to guide customers in properly maintaining and caring for the cable, thereby extending the service life of the product.
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