Detailed Introduction to 2xsey and 2xseyry Medium Voltage Armored Cables
I. Information Related to the Product Itself
(1) Specification Parameters
As high-performance medium-voltage
Power Armored Cables, 2xsey and 2xseyry cables have rigorous and clear definitions in terms of specification parameters to ensure their stable and reliable performance in power transmission.
In terms of voltage levels, these two types of cables are mainly applicable to 3.6/6kv and 6/10kv. Among them, 3.6/6kv means that the rated power frequency voltage of the cable is 6kv, and the rated power frequency withstand voltage is 3.6kv; 6/10kv means that the rated power frequency voltage is 10kv, and the rated power frequency withstand voltage is 6kv. Such a voltage range enables them to meet the common needs of medium-voltage power transmission and be widely used in various medium-voltage power systems.
In terms of conductor specifications, the cross-sectional area of the conductor is one of the important parameters, with common specifications such as 10mm², 16mm², 25mm², 35mm², 50mm², 70mm², 95mm², 120mm², 150mm², 185mm², 240mm², 300mm², etc. Different cross-sectional areas correspond to different current-carrying capacities, which can be selected according to specific power transmission requirements. For example, conductors with larger cross-sectional areas can carry larger currents and are suitable for scenarios with larger power loads; while conductors with smaller cross-sectional areas are suitable for situations with relatively smaller loads.
The outer diameter of the cable also varies due to different conductor specifications and structures. Generally speaking, as the cross-sectional area of the conductor increases, the outer diameter of the cable will increase accordingly. Taking common specifications as examples, the outer diameter of a 10mm² cable is about 15-20mm, while the outer diameter of a 300mm² cable may reach 50-60mm. The specific outer diameter parameters will be detailed in the product's technical manual, which is of great significance for the planning of cable laying and installation.
In addition, the length of the cable can usually be customized according to customer needs, with common lengths such as 100 meters, 200 meters, 500 meters, etc. At the same time, the bending radius of the cable is also a key parameter, which is related to the bending performance and service life of the cable during laying. Generally speaking, the static bending radius is not less than 12 times the outer diameter of the cable, and the dynamic bending radius is not less than 20 times the outer diameter of the cable to ensure that the cable will not be damaged by excessive stress when bending.
(2) Characteristic Applications
2xsey and 2xseyry medium-voltage armored cables have distinctive applications in multiple fields due to their excellent performance.
In urban power grid transformation, these two types of cables play an important role. With the continuous development of cities, the power load continues to grow, putting forward higher requirements for the reliability and stability of the power grid. Urban power grid transformation involves the replacement of old cables and the laying of new lines. 2xsey and 2xseyry cables can adapt to the complex underground environment of cities, such as underground pipelines, direct burial and other laying methods. Their armor layer can effectively resist external mechanical damage, ensure stable power transmission, and provide reliable power support for the lives of urban residents and the development of industry and commerce.
In terms of industrial park power distribution, there are many enterprises in industrial parks, with a wide variety of electrical equipment, large and fluctuating power loads, and there may be various industrial interferences and corrosive environments. 2xsey and 2xseyry cables have good chemical corrosion resistance and flame retardancy, and can operate safely in such environments. Their excellent current-carrying capacity and stability can meet the power needs of various production equipment in industrial parks and ensure the smooth progress of production.
Power transmission in new energy projects (such as wind power and photovoltaics) is also an important application field of these two types of cables. Wind farms are usually located in harsh environments, such as high altitudes, windy, and low temperatures; photovoltaic power plants may be located in fields, deserts and other areas, facing tests such as high temperatures and ultraviolet radiation. 2xsey and 2xseyry cables have strong temperature resistance and can work stably in environments from -40℃ to 90℃, which can adapt to various extreme climate conditions of new energy projects. At the same time, their reliable insulation performance and mechanical strength ensure the efficient transmission of new energy power and promote the development and utilization of clean energy.
In addition, these two types of cables are also widely used in some special engineering constructions, such as subways and tunnels. The space in subways and tunnels is limited, and the environment is complex, so the safety and reliability of cables are highly required. The armor layer of 2xsey and 2xseyry cables can provide effective protection to prevent the cables from being damaged by extrusion, collision, etc. At the same time, their good bending performance is convenient for laying and installation in narrow spaces, ensuring the stable and reliable power supply of subways and tunnels.
(3) Material Styles
2xsey and 2xseyry cables are refined in material selection, and their style design also fully considers different usage needs.
In terms of materials, the conductor part is made of high-purity electrolytic copper. High-purity electrolytic copper has excellent electrical conductivity, which can reduce the loss during current transmission and improve the efficiency of power transmission. At the same time, electrolytic copper has good mechanical properties, with high ductility and toughness, which is convenient for processing into various specifications of conductors and is not easy to break during use.
The insulation layer is made of high-quality cross-linked polyethylene (XLPE) material. After cross-linking treatment, the molecular structure of XLPE material forms a three-dimensional network structure, which makes the material have excellent electrical insulation performance, can effectively prevent current leakage, and ensure the insulation strength of the cable. In addition, XLPE material also has good aging resistance and thermal stability, which is not easy to age and deteriorate during long-term use, can withstand higher temperatures, and ensure that the cable can work stably in different temperature environments.
The armor layer usually has two styles:
Steel Tape armoring and steel wire armoring. Steel tape armoring has good pressure resistance, suitable for environments prone to external pressure such as underground direct burial, and can effectively protect the cable from extrusion damage. Steel wire armoring has stronger tensile performance, suitable for occasions that need to bear large tensile force, such as vertical laying, bridge crossing, etc. Customers can choose the appropriate armor style according to the specific use environment and laying method.
The sheath layer of the cable generally uses polyethylene (PE) or polyvinyl chloride (PVC) materials. PE sheath has good corrosion resistance and
Flexibility, light weight, and is convenient for construction;
PVC Sheath has good flame retardancy and mechanical strength, suitable for environments with high flame retardancy requirements. Different sheath materials and styles enable the cable to adapt to different use scenarios.
(4) Production Process
The production process of 2xsey and 2xseyry cables strictly follows high-standard process requirements to ensure stable and reliable product quality.
The manufacturing process of the conductor is a basic link. First, high-purity electrolytic copper rods are drawn into
Copper Wires of the required diameter through wire drawing treatment. During the wire drawing process, the drawing speed and temperature need to be controlled to ensure the dimensional accuracy and mechanical properties of the copper wires. Then, multiple copper wires are stranded to form a conductor. The stranding process can improve the flexibility and stability of the conductor and reduce damage to the conductor during bending.
The extrusion process of the insulation layer is crucial. Using advanced extrusion equipment, XLPE material is evenly extruded on the surface of the conductor to form an insulation layer. During the extrusion process, it is necessary to accurately control the temperature, pressure and extrusion speed to ensure that the insulation layer has uniform thickness, smooth surface, and is closely combined with the conductor. The extruded
Insulated Wire core needs to undergo cross-linking treatment, usually using warm water cross-linking or steam cross-linking methods, so that the XLPE material forms a stable three-dimensional network structure, thereby obtaining excellent insulation performance.
The manufacturing process of the armor layer varies according to different styles. For steel tape armoring, the steel tape is wrapped around the insulated wire core by longitudinal wrapping or lapping, and then embossing treatment is carried out to enhance the bonding force between the steel tape and the insulated wire core and the flexibility of the cable. For steel wire armoring, the steel wire is wrapped around the insulated wire core according to a certain pitch. During the wrapping process, the tension of the steel wire needs to be kept uniform to ensure the tightness and stability of the armor layer.
The extrusion process of the sheath layer is similar to that of the insulation layer, but the materials used are different. PE or PVC materials are extruded outside the armor layer to form a sheath layer. The sheath layer can protect the armor layer and insulation layer from erosion by the external environment, such as moisture, dust, chemicals, etc. During the extrusion process, various process parameters also need to be controlled to ensure the quality of the sheath layer.
Throughout the production process, strict quality inspection is also required. Including DC resistance test of conductors, breakdown voltage test of insulation layers, partial discharge test of cables, mechanical performance test, etc. Through a series of tests, it is ensured that each batch of cables meets relevant standards and requirements.
II. General Product Information
(1) Packaging
In order to ensure that the cable is not damaged during transportation and storage, 2xsey and 2xseyry cables adopt a scientific and reasonable packaging method.
For coiled cables, wooden reels or iron reels are usually used for packaging. Wooden reels are made of high-quality solid wood materials, which have certain strength and toughness and can bear the weight of the cable and the impact during transportation. Iron reels have higher strength and durability, suitable for cables with larger weight or long-distance transportation. When the cable is coiled on the wooden or iron reel, a certain tension needs to be maintained to ensure that the cable is arranged neatly and avoid loosening and mutual friction.
The outer layer of the cable will be wrapped with a layer of plastic film or linen. The plastic film has good moisture-proof and dust-proof performance, which can protect the cable from moisture and dust erosion; the linen has a certain buffering effect, which can reduce the damage to the cable caused by collision and friction during transportation. For some special specifications or longer cables, wooden boxes may also be used for packaging to provide more comprehensive protection.
The packaging will also be marked with detailed product information, such as product name, model specification, length, voltage level, production date, batch number, manufacturer, etc. This information is convenient for customers to check when receiving and accepting the cable, and is also conducive to product traceability and management.
(2) Transportation
The transportation of 2xsey and 2xseyry cables needs to follow certain norms and requirements to ensure the safe transportation of the cables.
In terms of transportation methods, according to the quantity, specification and transportation distance of the cables, road transportation, railway transportation or water transportation can be selected. Road transportation has the characteristics of high flexibility and strong directness, and is suitable for the transportation of short-distance or small and medium batches of cables; railway transportation is suitable for long-distance and large-batch cable transportation, with the advantages of large transportation volume and low cost; water transportation is suitable for cross-regional and large-batch cable transportation, especially convenient for coastal areas or areas with ports.
During transportation, the following points need to be noted: First, the cable reels should be placed upright, avoiding flat or inverted placement to prevent the cables from being squeezed and deformed. Secondly, there should be a certain gap between the cable reels to avoid mutual collision and friction. For long-distance transportation, the cable reels need to be fixed, such as using ropes or steel strips to fix them in the transport vehicle or container to prevent movement during transportation.
At the same time, during transportation, the cable should be avoided from direct sunlight, rain and snow. In case of bad weather, the cable should be covered and protected to prevent the cable from getting damp, aging or freezing damage. Transportation personnel should also pay close attention to the status of the cable and deal with any abnormal situations in a timely manner.
(3) Delivery
In order to ensure that customers can receive qualified products in a timely manner, the delivery process of 2xsey and 2xseyry cables is standardized and efficient.
Before delivery, warehouse management personnel will check the cables according to the order information, including product model, specification, quantity, packaging, etc., to ensure consistency with the order requirements. At the same time, the appearance and packaging of the cable will be inspected, and if any damage or non-compliance is found, it will be handled and replaced in a timely manner.
When delivering goods, a detailed delivery list will be generated, which indicates the relevant information of the product, delivery date, transportation method, consignee and other information, and will accompany the goods. For some important customers or large orders, special personnel will be arranged to track and timely feedback the transportation status of the goods to the customers.
In addition, during the delivery process, relevant logistics regulations and safety requirements will be strictly followed to ensure the safe and smooth transportation of the goods.
(4) Samples
In order to allow customers to fully understand the performance and quality of 2xsey and 2xseyry cables before purchasing, the company provides sample services.
Customers can apply for samples from the company, indicating the model, specification and other information of the required samples. The company will arrange the production and delivery of samples within a certain period of time (usually 3-7 working days) after receiving the application. The production process and quality of the samples are consistent with the mass-produced products, which can truly reflect the performance of the products.
The delivery method of samples is usually selected according to customer needs and geographical location, such as express delivery, logistics, etc. The company will bear the production cost of the samples, but the delivery cost of the samples is usually borne by the customer, except for special circumstances.
After receiving the samples, customers can conduct various performance tests and evaluations, such as testing the conductivity of the conductor, the insulation performance of the insulation layer, the mechanical strength of the armor layer, etc. If customers are satisfied with the samples, they can further negotiate bulk purchase matters; if customers have any questions or suggestions about the samples, the company will communicate and improve in a timely manner.
(5) After-sales Service
The company attaches great importance to after-sales service and provides customers with comprehensive after-sales support to ensure that customers' interests are protected.
In terms of product quality, the company promises that the 2xsey and 2xseyry cables provided meet relevant national standards and industry standards, and provide a certain period of quality guarantee (usually 1-3 years). During the quality guarantee period, if the product has quality problems caused by non-human factors, the company will provide free repair, replacement or return services.
In terms of technical support, the company has a professional technical team that can provide customers with timely technical consultation and guidance. Customers can consult the company's technical personnel about any technical problems encountered during the laying, installation and use of the cable, and the technical personnel will give answers and suggestions in the first time.
In addition, the company has also established a sound customer file, tracking and visiting customers' usage, understanding customers' needs and opinions, and continuously improving product and service quality. If customers have any complaints about products or services, the company will handle and resolve them in a timely manner to ensure customer satisfaction.
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