I. Information Related to the Product Itself
(I) Specification Parameters
The 630 Sqmm, 300sqmm Single Core Cu XLPE Awa flame - retardant armored
Power Cable strictly complies with the BS5467 standard, and all its specification parameters are accurately adapted to the needs of medium - and high - voltage power transmission.
Current - carrying capacity is one of its core performance indicators. In a standard laying environment (temperature 25°C, laid in the air), the current - carrying capacity of the 300sqmm cable is about 450 - 500A; the current - carrying capacity of the 630sqmm cable can reach 650 - 700A. In the environment of direct burial in soil, due to changes in heat dissipation conditions, the current - carrying capacity needs to be multiplied by a correction factor of about 0.9; when the ambient temperature exceeds 30°C, the correction factor is adjusted to 0.85 - 0.9.
The outer diameter of the cable varies according to the specification. The outer diameter of the 300sqmm cable is about 40 - 45mm; the outer diameter of the 630sqmm cable is about 55 - 60mm. Such dimensions can not only meet the laying space requirements of pipe threading or direct burial but also ensure the stability of the armored layer and internal structure. The rated voltage is 600/1000V, which meets the voltage standard for medium - and high - voltage power transmission. The DC resistance of the
Copper Conductor is strictly controlled. At 20°C, the DC resistance per kilometer of the 300sqmm cable is not more than 0.058Ω; the DC resistance per kilometer of the 630sqmm cable is not more than 0.027Ω, which can effectively reduce energy loss during transmission. In addition, the flame - retardant grade of the cable meets the relevant requirements in the BS5467 standard, and can effectively inhibit the spread of flame under specified test conditions.
(II) Characteristic Uses
With its own performance advantages and specification differences, the cable shows distinct characteristic uses in various power transmission scenarios.
The 300sqmm cable is suitable for medium - power power transmission scenarios. In industrial parks, it can be used as a power branch line to connect each production workshop with the park's power distribution room, meeting the power needs of small and medium - sized production lines in the workshop; in the internal power distribution system of large commercial complexes, it can transmit power from the main power distribution room to the power distribution rooms on each floor, supplying power to equipment such as air conditioners, lighting, and elevators in the shopping mall. In the power distribution lines in the logistics area of large hospitals, this specification of cable can ensure the power supply in areas such as canteens and laundry rooms, stably supporting the operation of relevant equipment.
The 630sqmm cable is suitable for high - power power transmission scenarios. In the branch lines of urban power grids, it can transmit power from the substation to the regional power distribution center, and then the power distribution center distributes it to surrounding users. Its large current - carrying capacity can meet the overall power demand of an area; in the transmission lines of large industrial and mining enterprises, it connects the enterprise's own
Power Station with the main production plant, providing power support for high - power equipment such as large smelting equipment and heavy machine tools. In addition, the internal transmission lines of new energy power generation bases, such as large photovoltaic power stations, which transmit the collected electric energy to the booster station, also rely on this specification of cable to ensure efficient power transmission.
Due to its flame - retardant and armored characteristics, the cable has obvious advantages in places with dense population and high safety requirements. In the underground transmission lines of the subway system, the environment is closed and there is a dense population. The flame - retardant performance of the cable can reduce fire hazards in case of accidents, and the armored layer can resist the vibration and extrusion caused by the operation of the subway; the power distribution main line of the shopping mall is laid in closed spaces such as ceilings or underground mezzanines, and the safety of the cable can reduce the fire risk; the power distribution lines of the inpatient building of the hospital ensure the power safety of patients and medical equipment, and its stability and safety characteristics are crucial.
(III) Material and Style
In terms of material selection and style design, the cable fully combines the needs of medium - and high - voltage transmission and safety, achieving the unity of performance and practicability.
In terms of materials, the conductor is made of high - purity electrolytic copper with a purity of more than 99.95%. High - purity copper has excellent conductivity, can efficiently transmit large currents, and reduce energy loss. At the same time, it has good ductility, is not easy to break during laying, and is convenient for construction operations.
The insulation layer is made of XLPE (cross - linked polyethylene) material, which has excellent temperature resistance and insulation. The long - term working temperature can reach 90°C, and it can withstand higher temperatures during short - term overload, and is not easy to age. It has high insulation resistance, can effectively isolate current, prevent electric leakage accidents, and has good chemical stability, which is not easy to be affected by moisture and corrosive substances in the environment.
The armored layer is Awa (aluminum armor), which is made of high - quality aluminum alloy strips. The aluminum armored layer is relatively light in weight, which can reduce the load during laying. At the same time, it has a certain mechanical strength, can resist external impacts such as extrusion and collision, and protect the internal wire core and insulation layer. The aluminum alloy material also has good corrosion resistance, extending the service life of the cable in humid or complex environments.
The outer sheath is made of flame - retardant polyvinyl chloride (PVC) material, which has flame - retardant characteristics. In case of fire, it can delay the spread of flame, reduce the release of toxic gases, and improve safety. At the same time, the outer sheath has certain wear resistance and weather resistance, which can protect the armored layer and internal structure from external environmental erosion.
In terms of style, it is a single - core design, and the core color is red for easy identification. The overall shape is cylindrical with a smooth surface. The armored layer adopts an interlocking armored structure, which not only ensures the protective performance but also has certain
Flexibility, facilitating bending and laying. The surface of the cable is clearly printed with marks such as model, specification, rated voltage, execution standard (BS5467), and manufacturer, which is convenient for construction and later maintenance. Cables of different specifications are mainly distinguished by their outer diameter in appearance. The 300sqmm cable is relatively slender, and the 630sqmm cable is thicker.
(IV) Production Process
The production process of the cable is carried out around performance and standard requirements, and each process is strictly controlled to ensure that the product quality meets the BS5467 standard.
The production of
Copper Conductors is a basic link. High - purity electrolytic copper rods are selected, and the copper rods are drawn into
Copper Wires with a diameter suitable for the corresponding specification through a continuous wire drawing process. During the wire drawing process, the wire drawing speed and die precision are controlled to ensure uniform diameter of the copper wires. Subsequently, multiple copper wires are stranded to form a single - core conductor in a concentric stranding way. During stranding, the tension is kept uniform to enhance the mechanical strength and conductivity of the conductor, and the stranding pitch is controlled within a reasonable range to ensure the stability of the conductor structure.
The insulation extrusion link is crucial. The XLPE material is put into an extruder, heated and melted at a temperature of 120 - 150°C, and uniformly coated on the surface of the copper conductor through a precision mold to form an insulation layer. The thickness of the insulation layer of the 300sqmm cable is about 3.0 - 3.5mm; the thickness of the insulation layer of the 630sqmm cable is about 4.0 - 4.5mm. During the extrusion process, an online thickness gauge is used to monitor the thickness of the insulation layer in real time to ensure that the deviation does not exceed ±0.1mm. After that, the insulation layer is cross - linked, and the XLPE molecules form a three - dimensional network structure through steam cross - linking to improve temperature resistance and insulation strength.
The armored layer is made by the aluminum strip longitudinal wrapping process. The aluminum alloy strip is continuously longitudinally wrapped outside the
Insulated Wire core through special equipment. The overlapping width of the aluminum strip is 15% - 20% of the width of the aluminum strip, and it is firmly connected by high - frequency welding to form a closed armored protective layer. After welding, cooling treatment is carried out to ensure that the armored layer is closely attached to the insulation layer. The thickness of the armored layer of the 300sqmm cable is about 1.5 - 2.0mm; the thickness of the armored layer of the 630sqmm cable is about 2.0 - 2.5mm.
Outer sheath extrusion is the last protective process. The flame - retardant PVC material is heated to 160 - 180°C in an extruder to melt and uniformly coated outside the armored layer. The thickness of the outer sheath of the 300sqmm cable is about 2.5 - 3.0mm; the thickness of the outer sheath of the 630sqmm cable is about 3.0 - 3.5mm. After extrusion, it is quickly cooled and shaped in a cold water tank to make the sheath closely attached to the armored layer. During the production process, each batch of cables needs to undergo a number of tests, including insulation resistance test, voltage withstand test (applying a specified voltage for a certain period of time without breakdown), flame - retardant performance test, etc., to ensure that they meet the requirements of the BS5467 standard.
(V) Compliance with Standards Related to Production Process
The cable is produced in strict accordance with the BS5467 standard, and the strict implementation of the standard is reflected in all links. In terms of material selection, copper conductors, XLPE
Insulation Materials, aluminum armored strips, and flame - retardant sheath materials must meet the material performance requirements specified in the standard, and relevant material certificates must be provided. The process parameters in the production process, such as extrusion temperature, insulation layer thickness, and armored layer overlapping width, are set and strictly controlled in accordance with the standard.
The finished product inspection link is completely carried out in accordance with the test methods and indicators of the BS5467 standard. For example, the flame - retardant performance test conducts a combustion test under the specified conditions in the standard to observe the flame spread and continuous burning time of the cable; the mechanical performance test detects the tensile and bending resistance of the cable; the electrical performance test ensures that the insulation resistance and voltage withstand performance meet the standard requirements. Only products that pass all standard tests can leave the factory to ensure that the quality and performance of the cable meet the specification requirements.
II. General Product Information
(I) Packaging
The packaging of the cable focuses on protecting the cable from damage during transportation and storage, and the packaging method is designed in combination with its specifications and armored characteristics.
For long - length 300sqmm cables (100 meters and above), wooden cable reels are used for packaging. The wooden reels are made of high - strength pine wood with a load - bearing capacity of not less than 800kg and a reel surface diameter of about 1.2 - 1.5m. The cables are neatly wound on the wooden reels, and the winding tension is controlled at 80 - 100N to avoid deformation of the armored layer due to over - tightening or looseness due to over - loosening. Both sides of the wooden reel are equipped with baffles with a thickness of 30mm, and rubber buffer strips are added at the edges of the baffles to prevent the cable from colliding with the baffles during transportation. The outer layer of the cable is wrapped with a moisture - proof wrapping film with a thickness of 0.08mm and a winding overlap rate of 50%, which can effectively isolate moisture and dust. The surface of the wooden reel is printed with model, length, weight, production batch number and other information with waterproof ink, and pasted with warning signs such as "Up" and "Anti - pressure".
Long - length 630sqmm cables (100 meters and above) are also packaged with wooden cable reels, but the load - bearing capacity of the wooden reels is not less than 1500kg, and the reel surface diameter is about 1.8 - 2.0m to adapt to the weight and outer diameter of the cable. Other packaging details are similar to those of the 300sqmm specification.
Short - length cables (10 - 50 meters) are packaged in high - strength wooden boxes. The wooden boxes are made of multi - layer plywood with a thickness of 20mm, and an 8mm thick pearl cotton buffer layer is laid inside. The 300sqmm cable is coiled into a disc with a diameter of about 50cm, and the 630sqmm cable is coiled into a disc with a diameter of about 60cm, both of which are fixed in the wooden box with special strapping to avoid shaking during transportation. Two bags of desiccant (100g each) are placed in the box to prevent the cable from getting damp. Product information and transportation warning signs are printed on the outside of the box, and two hand holes are opened on the side for easy manual handling.
The packaging materials meet environmental protection requirements, and the wooden packaging has been fumigated to meet the export quarantine standards. All packages have passed the drop test (no damage when dropped from a height of 1.5m) and pressure test (withstand 500kg pressure for 2 hours without deformation) before leaving the factory to ensure transportation safety.
(II) Transportation
The transportation of the cable needs to combine its specifications, weight and armored characteristics, select an appropriate transportation method and take protective measures.
The transportation method is selected according to the transportation distance and quantity. For short - distance transportation (within 300 kilometers), trucks with hydraulic tailboards are used, and anti - skid rubber pads are laid in the carriage. The thickness of the rubber pads is 10mm, and the friction coefficient is not less than 0.8 to prevent the cable reels from sliding. A single truck can load no more than 8 wooden reels of 300sqmm cables and no more than 4 wooden reels of 630sqmm cables. When loading, the wooden reels are separated by wooden partitions with a thickness of 20mm to prevent mutual collision.
For long - distance transportation (more than 300 kilometers), railway flat cars are selected, and the wooden reels are fixed on the carriage load - bearing frame through steel wire ropes. Rubber pads are set at the fixed points to avoid the steel wire ropes from damaging the wooden reels. The diameter of the steel wire rope is not less than 12mm, and each wooden reel is provided with at least 4 fixed points. Large quantities of export transportation use container shipping, with ventilation devices installed in the containers to control the humidity below 60%.
Targeted protective measures should be implemented during transportation. When transporting in rainy days, the cables are completely covered with rainproof cloth. The rainproof cloth is made of waterproof canvas with a thickness of 0.5mm. The edges hang down to the bottom of the carriage and are compacted with sandbags to prevent rainwater from seeping in. When transporting in high - temperature weather, avoid the cables being exposed to the sun for a long time. A sunshade can be installed on the top of the carriage to control the temperature in the carriage not to exceed 40°C. When transporting in low - temperature weather (below 0°C), if the cables need to be unloaded in a low - temperature environment, preheat the cables in advance to avoid the sheath from becoming brittle and damaged due to low temperature.
Forklifts or cranes are used for loading and unloading. The length of the forklift arm is not less than 1.8m, and the diameter of the crane's lifting rope is not less than 16mm. When loading and unloading 630sqmm cables, special lifting tools must be used to avoid damaging the wooden reels and cables. It is strictly forbidden to use steel wire ropes to directly bind the outer sheath of the cable for hoisting to prevent damage to the sheath and armored layer. During loading and unloading, the inclination angle of the cable reel does not exceed 15° to avoid the cable slipping from the wooden reel.
(III) Delivery
The delivery process of the cable is standardized and orderly to ensure that the cable is delivered on time and accurately.
In the order confirmation link, after receiving the order, the sales staff checks the product model, specification, quantity, delivery address, delivery time and other information with the customer within 3 hours. After confirmation, an order number is generated and entered into the system. At the same time, check the customer's payment status, and arrange stock preparation after collecting the advance payment (usually 30% of the total amount) according to the contract agreement.
The stock preparation process is efficiently connected. Warehouse managers retrieve the inventory according to the order number, and transfer the cables to the inspection area after checking that the cable identification is consistent with the order information. Quality inspectors conduct random inspections on the cables, including appearance (no damage to the sheath, no looseness of the armored layer, clear identification), insulation resistance (measured with a 2500V megohmmeter not less than 1000MΩ), and length (error not exceeding ±0.5%). After passing the random inspection, an outgoing inspection report is issued. The stock preparation cycle is usually 2 - 3 working days, and the stock preparation cycle for special specifications or customized models is determined according to the production progress, with a maximum of no more than 7 working days.
Transportation arrangements are accurately connected. The logistics specialist selects the optimal transportation method according to the delivery address, cable specifications and quantity, confirms the delivery time window with the customer (accurate to one day), and notifies the customer of the arrival information 48 hours in advance, including the license plate number of the transport vehicle, the driver's contact information, the estimated arrival time, and the unloading equipment to be prepared upon arrival. For urgent orders, a dedicated vehicle can be arranged for transportation to ensure delivery within 24 hours.
Shipment tracking is fully visualized. The location of the goods is monitored in real-time through the logistics management system, and transportation progress information is pushed to the customer every 8 hours, including the current location, estimated arrival time, transportation status, etc. In case of delays due to traffic control, bad weather, etc., communicate with the customer immediately and provide solutions (such as changing the transportation route, urgently allocating spare goods). After the goods are delivered, assist the customer in checking the quantity and appearance, and after confirmation, the customer signs for receipt, and the receipt is uploaded to the system for archiving in real-time.
(IV) Samples
The cable provides sample services to help customers understand product performance and adaptability in advance.
The sample application process is simple. Customers can apply through online application on the official website, phone calls, emails, etc., stating the required sample model, specification, quantity (usually no more than 2 meters) and purpose (such as testing, project trial). When applying, it is necessary to provide information such as the company name, contact person, contact information, and project name. Sample applications will receive a response within 1 working day.
Sample preparation is strictly standardized. Samples are cut from mass-produced qualified products. The length of 300sqmm samples is 1.5 meters, and the length of 630sqmm samples is 2 meters, retaining the complete armored layer, sheath and core. Both ends of the samples are sealed with insulating caps to prevent the core from getting damp and damaged. A sample label is attached to the samples, indicating product model, specification, production batch number, cutting date and other information, as well as a copy of the product test report and product manual.
Samples are sent by express. The packaging uses rigid plastic tubes (300sqmm samples use plastic tubes with a diameter of 50mm, 630sqmm samples use plastic tubes with a diameter of 80mm). The samples are placed in the tubes, and both ends are fixed with foam plugs to prevent bending during transportation. The express waybill is marked with "Sample", "Valuable Item" and "Handle with Care", and the next-day or second-day delivery service is selected to ensure that the samples are delivered within 48-72 hours. Samples are provided free of charge, and the express fee is to be paid by the customer.
Sample tracking service is attentive. After the samples are sent, the customer is sent the express waybill number, logistics query link and contact information of the tracking person. Within 3 working days after the customer receives the samples, the sales staff will make a return visit to understand the sample usage and answer relevant questions (such as testing items, laying precautions, etc.). If the customer needs further performance testing (such as flame retardancy testing, current-carrying capacity testing), guidance on testing methods and relevant technical parameters can be provided.
(V) After-sales Service
The after-sales service system of the cable is sound, providing customers with full-cycle support to ensure the normal use and maintenance of the cable.
In terms of quality assurance, the product warranty period is 3 years, starting from the date of customer signature. Within the warranty period, if the cable fails due to its own quality problems (such as insulation layer breakdown, armored layer falling off, sheath cracking, etc.), the customer can apply for after-sales service with the purchase contract, fault photos and test reports. After receiving the application, the after-sales specialist will respond within 2 hours and arrange for technical personnel to arrive at the site for testing within 48 hours. After confirming the quality problem, new cables will be provided to the customer free of charge, and the round-trip transportation costs and on-site replacement labor costs will be borne.
The technical support team is composed of engineers with more than 8 years of experience, providing 7×24-hour consulting services. When customers are in the cable selection stage, engineers provide selection suggestions and current-carrying capacity calculation tables according to transmission power, laying environment (such as whether to thread pipes, soil type, etc.) and safety requirements; during laying, on-site guidance can be provided, such as laying depth (not less than 0.7 meters for direct burial), bending radius (not less than 15 times the outer diameter of the cable), and armored layer grounding methods; during use, they answer questions about maintenance, such as regular inspection cycles (recommended once a year), inspection items (insulation resistance, integrity of the armored layer, sheath appearance, etc.), and cleaning methods.
Maintenance services are for cables that have exceeded the warranty period. After on-site inspection by technical personnel, maintenance plans and cost quotations are provided, and maintenance is carried out after customer confirmation. Maintenance contents include sheath repair, armored layer reinforcement, insulation layer repair, etc., and a 6-month warranty is provided after maintenance. For cables that cannot be repaired, a trade-in service can be provided, and old cables are recycled at a discount based on weight and condition, with the discount ratio being 10%-20% of the price of new cables.
The regular return visit mechanism is normalized. When customers use the cable for 3 months, 6 months, 1 year, and 2 years, after-sales personnel will conduct return visits, including telephone return visits and on-site visits (for large projects), record the cable operation status, changes in the laying environment, etc., and collect customer opinions and suggestions. Product and service optimization is carried out based on return visit data. For example, in response to the problem of strong soil corrosiveness reflected by customers in a certain area, the anti-corrosion performance of the armored layer of cables supplied to that area is enhanced in subsequent production. At the same time, the electronic version of the "
Armored Cable Maintenance Manual" and related maintenance videos are pushed to customers to provide professional maintenance knowledge.
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