Ymvk Ymvk-MB Ymvk-as XLPE Insulated PVC Sheathing Copper Cable 600/1000V to KEMA K42 & IEC60502

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2025-07-31 06:17:01

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Detailed Introduction to Ymvk Series Copper Cables

I. Product Information

(I) Specifications and Parameters

The Ymvk series Copper Cables (including models such as Ymvk-MB and Ymvk-as) are manufactured in strict accordance with KEMA K42 and IEC 60502 standards, which set strict specifications for various performances and quality of the cables. Its rated voltage is stable at 600/1000V, and this voltage level enables it to be widely used in various power transmission scenarios, whether it is for equipment power supply in industrial production or power wiring in civil buildings, it can meet the needs.

In terms of conductor specifications, this series of cables provides a wide range of cross-sectional size options, ranging from 1mm² to 300mm². Cables with smaller cross-sections, such as 1mm² and 1.5mm², are suitable for power supply of small electrical equipment with low current, such as lamps and small household appliances in homes; while cables with larger cross-sections, such as 120mm², 150mm², 240mm², 300mm², etc., can be used for power transmission of high-power equipment, such as large industrial motors and transformers. Conductors with different cross-sections can carry different currents, and users can make precise choices according to the actual load conditions.

The insulation thickness of the cable will vary according to the size of the conductor cross-section. Generally, the larger the cross-section, the thicker the insulation thickness, so as to ensure reliable insulation protection under the rated voltage and effectively prevent leakage accidents. Generally speaking, for a 1mm² conductor, the insulation thickness is about 0.6mm; for a 300mm² conductor, the insulation thickness can reach about 2.5mm.

The outer diameter of the cable also varies due to different conductor cross-sections and structures. Taking the Ymvk model as an example, the outer diameter of a 1mm² cable is about 3.5mm, and the outer diameter of a 300mm² cable is about 30mm. Differences in structural details of different models of cables will also lead to differences in outer diameter. For example, the Ymvk-MB model has a specific protective structure, so its outer diameter is slightly larger than that of the Ymvk model with the same cross-section.

In addition, this series of cables has good temperature resistance. Under normal working conditions, it can operate stably in an ambient temperature range of -20℃ to 70℃. Its minimum bending radius is also clearly specified, generally 6-12 times the outer diameter of the cable, and the specific value will be adjusted according to the model and laying method, which provides convenience for the laying of the cable in different environments.

(II) Characteristic Applications

The Ymvk series copper cables have a wide range of applications in many fields due to their excellent performance.

In the industrial field, this series of cables is an important choice for power transmission in factory workshops. There are often adverse factors such as mechanical vibration, oil pollution, and dust in industrial environments. The PVC Sheath of Ymvk series copper cables has good corrosion resistance and mechanical protection capabilities, which can resist the erosion of these factors and ensure stable power transmission. For example, in mechanical processing workshops, the power connection of various machine tools and equipment can use this series of cables to ensure the normal operation of the equipment. At the same time, for some industrial places that need to work in higher temperature environments, such as some areas of metallurgical workshops, the cable can also adapt to the environmental temperature requirements to a certain extent.

In terms of civil buildings, Ymvk series copper cables are suitable for power wiring in residential quarters, office buildings, commercial complexes and other buildings. From the main distribution room of the building to the distribution boxes on each floor, and then to the sockets, lamps and other electrical equipment in each room, this series of cables can be used for power transmission. Its excellent electrical insulation performance can ensure the safety of residents' electricity use and reduce the occurrence of electrical faults. Moreover, the various cross-sectional specifications of this series of cables can meet the power load requirements of different building areas, and suitable cable models can be found for both lighting circuits and power circuits.

In the field of public infrastructure, Ymvk series copper cables also play an important role. Urban street lamp systems, traffic signal systems, etc., all need stable and reliable power supply, and this series of cables can meet the power transmission needs of these outdoor facilities. In some small public venues, such as community activity centers and small gymnasiums, their internal power wiring can also use this series of cables.

In addition, due to its special structural design, the Ymvk-MB model cable performs well in some scenarios that require buried laying, such as power wiring in underground parking lots of residential quarters and Underground Cable networks in factory areas; the Ymvk-as model is more suitable for use in pipe-laying environments, such as pipe wiring inside building walls and pipe installation in cable trays.

(III) Material and Style

Insulation Material: Ymvk series copper cables use cross-linked polyethylene (XLPE) as the insulation material. XLPE is a polyethylene material treated by cross-linking. Compared with ordinary polyethylene, its molecular structure forms a three-dimensional network structure, which makes it have higher mechanical strength and temperature resistance. At higher temperatures, the XLPE insulation layer is not easy to soften or deform, can maintain stable insulation performance, and effectively block current leakage. At the same time, XLPE material also has good chemical corrosion resistance and aging resistance, which can maintain stable performance during long-term use and extend the service life of the cable.

Sheath Material: The sheath of this series of cables is made of polyvinyl chloride (PVC) material. PVC material has good mechanical properties, which can provide effective protection for the internal insulation layer and conductor of the cable, and resist external mechanical impact and wear. It also has certain corrosion resistance and can resist the erosion of some common chemical substances, such as some pollutants in the air and a small amount of acid-base mist. In addition, PVC material is easy to process and form, so that the sheath of the cable can tightly wrap around the insulation layer, ensuring the structural stability of the cable. However, it should be noted that PVC materials will release toxic gases when burned, so they need to be used with caution in places with extremely high fire safety requirements.

Conductor Material: The conductors of Ymvk series copper cables are made of high-purity copper. High-purity copper has excellent electrical conductivity, with high conductivity and low resistance, which can reduce energy loss during power transmission and improve the efficiency of power transmission. At the same time, Copper Conductors also have good ductility and Flexibility, which is convenient for bending and laying of cables, and can better reflect their advantages in some narrow spaces or scenarios that require complex wiring. The surface of the conductor has been specially treated to be smooth and burr-free, which can ensure a tight combination with the insulation layer and avoid local overheating caused by poor contact.

Style Design: Ymvk series copper cables are designed as single-core or Multi-Core, specifically different according to models. Single-Core Cables have a simple structure and good bending performance, suitable for use in some occasions that require frequent bending; Multi-Core Cables combine multiple Insulated Cores together and are wrapped with a PVC sheath. This structure makes the laying of cables more convenient, reduces the complexity of wiring, and is suitable for scenarios that need to transmit multiple circuits of power at the same time. The appearance of the cable has various colors, commonly black, gray, etc. Cables of different colors can be used to distinguish different circuits or purposes, which is convenient for construction and maintenance. The surface of the cable is usually printed with model, specification, standard number and other information, which is convenient for users to identify and use.

(IV) Production Process

The production process of Ymvk series copper cables is carried out in strict accordance with relevant standards and process requirements to ensure product quality.

Conductor Manufacturing: First, high-purity copper materials are processed, and the copper materials are drawn into Copper Wires of the required diameter through a wire drawing process. Then, according to the cross-sectional specification of the Cable Conductor, multiple copper wires are stranded. During the stranding process, it is necessary to ensure that the copper wires are arranged evenly and tightly to improve the conductivity and mechanical strength of the conductor. The surface of the Stranded Conductor should be cleaned to remove oil, impurities, etc. on the surface to ensure a good combination with the insulation layer.

Insulation Extrusion: The XLPE insulation layer is extruded on the outside of the conductor. This process is carried out on special extrusion equipment. The XLPE material is heated and melted, and then evenly extruded and coated on the surface of the conductor through a mold. During the extrusion process, parameters such as extrusion temperature, speed, and pressure must be strictly controlled to ensure that the insulation layer has a uniform thickness, a smooth surface, and no defects such as bubbles and impurities. After extrusion, the insulation layer is cross-linked, usually by dry cross-linking or wet cross-linking, so that the XLPE material completes the cross-linking reaction and forms a stable three-dimensional network structure.

Sheath Extrusion: For multi-core cables, it is necessary to first perform cabling treatment on multiple insulated cores and gather them together according to a certain stranding method. Then, the PVC sheath is extruded on the outside of the cabled cores or the outside of the single-core insulated cores. The sheath extrusion process is similar to insulation extrusion, and it is also necessary to control various process parameters to ensure that the sheath has a uniform thickness, tightly wraps around the internal structure, and has good adhesion with the internal structure. PVC materials need to be fully dried before extrusion to avoid bubbles in the sheath.

Inspection and Testing: Strict inspection and testing are carried out in all links of the production process. After the conductor is stranded, its diameter, resistance and other parameters should be tested; after the insulation layer is extruded, its thickness, insulation resistance, voltage resistance performance, etc. need to be inspected; after the sheath is extruded, the thickness, appearance, mechanical properties, etc. of the sheath should be checked. In addition, the finished cable also needs to undergo overall performance tests, such as temperature resistance test, bending performance test, combustion performance test (for specific requirements), etc., to ensure that the cable meets the requirements of KEMA K42 and IEC 60502 standards. Only products that pass all inspections and tests can leave the factory for sale.

II. General Product Information

(I) Packaging

The packaging of Ymvk series copper cables adopts industry-standard methods to ensure that the cables are not damaged during transportation and storage.

Packaging Materials: Cables are usually wound on wooden or steel cable reels. The cable reel has sufficient strength and stability to bear the weight of the cable and the external forces during transportation and handling. The size of the cable reel is selected according to the length and cross-sectional size of the cable to ensure that the cable can be neatly and tightly wound on it. On the outer layer of the cable, a layer of plastic film is wrapped, which can prevent the cable from being eroded by dust and moisture, and keep the cable clean and dry. For some shorter cables, carton packaging may also be used, and buffer materials such as foam are placed inside the carton to avoid damage to the cable due to collision during transportation.

Packaging Specifications: The length of each reel of cable usually has different specifications such as 100 meters, 200 meters, and 500 meters, and users can choose according to actual needs. For cables with large cross-sections, due to their large weight, the length of each reel may be relatively short to facilitate transportation and handling; while the length of each reel of small cross-section cables can be longer to improve transportation efficiency. On the cable reel or packaging carton, the model, specification, length, rated voltage, execution standard, manufacturer and other information of the cable will be clearly marked, which is convenient for users to identify and accept.

Packaging Marks: In addition to the above basic information, some warning marks such as "Do Not Press Heavily", "Moisture-proof and Sun-proof", "Handle with Care" are also printed on the packaging to remind transportation and storage personnel to handle the cable correctly. At the same time, the stacking restrictions of the cable, such as stacking height, will also be marked to ensure safety during storage.

(II) Transportation

Transportation Methods: Ymvk series copper cables can be transported by various means such as road transportation, railway transportation, and waterway transportation. Road transportation has the characteristics of high flexibility and door-to-door service, and is suitable for short-distance transportation and situations with tight transportation time requirements. For long-distance transportation, railway transportation and waterway transportation have the advantages of large transportation volume and relatively low cost. When choosing the transportation method, factors such as the quantity of goods, transportation distance, transportation time, and cost will be comprehensively considered to select the most suitable transportation method.

Transportation Requirements: During transportation, it is necessary to ensure the stability of the cable reel to avoid rolling and collision of the cable reel on the transport tool. The cable reel should be placed horizontally, and inversion or tilting is prohibited to prevent the cable from falling off the cable reel. For cables packaged in cartons, extrusion and stepping should be avoided to prevent damage to the cable due to packaging damage. During transportation, measures for moisture-proof, sun-proof and rain-proof should be taken to avoid the cable being affected by bad weather. For example, when transporting in rainy days, the cable should be tightly covered with a rain cloth; in high temperature in summer, the cable should be avoided from being exposed to direct sunlight for a long time. At the same time, the compartment and cargo hold of the transport vehicle or ship should be kept clean and dry, without sharp objects and corrosive substances.

Transportation Responsibility: The transporter shall strictly abide by the provisions of the transportation contract to ensure that the cable is delivered to the destination safely and timely. During transportation, if the cable is damaged or lost due to the transporter's reasons, the transporter shall bear the corresponding compensation liability in accordance with the contract agreement. The shipper and the transporter will check the quantity and packaging of the cable together, and go through the handover procedures after confirmation.

(III) Delivery

Delivery Process: After the user places an order, the manufacturer will arrange production scheduling according to the order requirements and arrange the production of cables. After production is completed and passed the inspection, packaging is carried out according to the packaging method specified by the user. Then, contact the transporter to determine the arrangement of transport vehicles or ships. Before delivery, the manufacturer will notify the user of the relevant information of the cable, such as model, specification, quantity, transportation method, estimated delivery time, estimated arrival time, etc., so that the user can prepare for receipt. At the same time, the manufacturer will prepare relevant delivery documents, such as product certificate, inspection report, packing list, invoice, etc., and send them together with the goods.

Delivery Time: For Ymvk series copper cables of conventional models and specifications, the manufacturer usually has a certain stock. After receiving the user's order and confirming payment, delivery can generally be arranged within 3-7 working days. For special models or large-quantity orders, the delivery time needs to be determined according to the production progress. The manufacturer will communicate with the user in advance to clarify the specific delivery date. In the production process, if the delivery is delayed due to force majeure factors such as tight supply of raw materials and equipment failure, the manufacturer will promptly notify the user and negotiate a solution.

Delivery Documents: The documents provided with the goods during delivery include the product certificate, which proves that the cable meets relevant standards and quality requirements; the inspection report, which details the results of various performance tests of the cable; the packing list, which lists the name, model, specification, quantity and other information of the goods; and the invoice, which serves as a voucher for user payment and financial reimbursement. After receiving the goods, the user should promptly check whether the delivery documents are consistent with the actual situation of the goods. If there is any problem, contact the manufacturer in time.

(IV) Samples

Sample Provision: In order to allow users to intuitively understand the quality and performance of Ymvk series copper cables before purchasing, the manufacturer can provide samples. Users can apply for samples from the manufacturer, specifying the model, specification and other information of the required samples. After receiving the sample application, the manufacturer will review the application. After approval, the preparation and delivery of samples will be arranged within 3-5 working days.

Sample Fees: The cost of samples is usually borne by the user, including the production cost, packaging cost and mailing cost of the samples. For some potential large customers or long-term cooperative customers, the manufacturer may reduce or exempt part or all of the sample fees, and the specific situation can be negotiated with the manufacturer. The manufacturer will arrange the production and delivery of samples only after the user confirms that they need the samples and agrees to pay the sample fees. The sample fee can be paid by bank transfer, online payment, etc.

Sample Testing: After receiving the samples, users can conduct various performance tests on the samples, such as insulation resistance test, voltage resistance test, conductor resistance test, mechanical performance test, etc., to verify whether the samples meet their own use requirements. If users have questions about the test results of the samples, they can consult the manufacturer, and the manufacturer will provide corresponding technical support and explanations. If the sample does not meet the user's requirements, the user can communicate with the manufacturer to negotiate whether to provide a new sample or adjust the product parameters.

(V) After-sales Service

Quality Assurance: The manufacturer provides a certain period of quality assurance for Ymvk series copper cables, usually 18 months to 3 years from the date of the product leaving the factory. During the quality assurance period, if the cable fails due to its own quality problems, such as insulation layer breakdown and conductor breakage, the manufacturer will be responsible for replacing the new cable or repairing it for free. However, if the cable failure is caused by improper installation by the user, unsuitable use environment, man-made damage, etc., the manufacturer will not assume the responsibility of free warranty, but can provide paid maintenance services for the user.

Technical Support: The manufacturer has a professional technical team to provide users with comprehensive technical support. Users can contact the manufacturer's technical personnel through phone, email, online customer service, etc. when encountering any technical problems during the installation, laying, use and maintenance of the cable. Technical personnel will promptly answer users' questions and provide professional solutions.