High-Performance Cable N2xy CV N2xh N2xh-J Xmvk Yxv-U Power Cable Conductor

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2025-07-25 06:34:00

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Details of High-Performance Cable Products such as N2xy

I. Core Information of the Products Themselves

(I) Detailed Explanation of Specification Parameters

Basic Specification Description

This series of high-performance Power Cables includes models such as N2xy, CV, N2xh, N2xh-J, Xmvk, and Yxv-U. Although specific cross-sectional areas are not clearly marked, they cover power transmission needs from small-medium to large power. The conventional applicable cross-sectional area ranges from 10mm² to 400mm², among which 10mm² is suitable for power supply of small equipment, and 400mm² can meet the power transmission of large industrial units. The rated voltage complies with low-voltage or medium-voltage standards. Most low-voltage models have a rated voltage of 0.6/1kV, which can be directly connected to 380V/220V industrial and civil power supply systems; some medium-voltage models (such as specific N2xh-J) can reach a rated voltage of 10kV, suitable for medium-voltage power distribution scenarios such as industrial parks.

The outer diameter of cables of different models varies with the cross-sectional area. Taking the 0.6/1kV, 120mm² specification as an example, the outer diameter is about 30mm, and the bending radius is 10-12 times the outer diameter, balancing structural stability and laying Flexibility. At an ambient temperature of 25°C, the long-term allowable current-carrying capacity of the 120mm² model is about 230A. Calculated according to the three-phase power formula, it can carry a load of about 120kW, which can meet the power needs of most industrial equipment and building power distribution.

Safety and Performance Parameters

The DC resistance of the conductor is strictly controlled within industry standards. The 120mm² model is ≤0.153Ω/km (at 20°C), ensuring that the power transmission loss is at a low level. The insulation resistance is ≥100MΩ·km (at 20°C). In the power frequency withstand voltage test, low-voltage models have no breakdown at 3kV for 5 minutes, and medium-voltage models are tested according to the corresponding voltage level (such as 10kV models have no breakdown at 12kV for 1 minute). The partial discharge capacity is ≤10pC (under 1.73U0), ensuring safe operation under the rated voltage. The tensile strength of the sheath is ≥12MPa, and the elongation at break is ≥125%, which can withstand mechanical stress during laying and use.

(II) Material and Structural Design

Core Material Composition

Conductor: All series adopt High-Performance Conductors, mainly high-purity electrolytic copper (copper content ≥99.95%). Some models (such as Xmvk) use copper alloy conductors according to needs. The conductor has a multi-strand stranded structure. The 10-35mm² models are stranded with 19 strands of fine Copper Wires, and the 120-400mm² models are stranded with 37 or more strands, which not only ensures excellent conductive performance (conductivity ≥58MS/m) but also improves flexibility. The copper wires are annealed (400-450°C) with a smooth surface and no oxidation, reducing current transmission resistance.

Insulation Layer: Different models use suitable materials according to scene requirements. Low-voltage models such as N2xy and CV use cross-linked polyethylene (XLPE) insulation with a thickness of 1.4-2.0mm, a long-term working temperature of 90°C, and a short-term overload temperature of up to 130°C, with excellent temperature resistance. The N2xh series is added with weather-resistant additives, and the insulation layer is resistant to ultraviolet aging, suitable for outdoor laying. Models such as Xmvk and Yxv-U use chemical corrosion-resistant Insulation Materials, which can resist erosion by oil stains and mild corrosive gases.

Sheath: Most low-voltage models use polyvinyl chloride (PVC) sheaths (thickness 1.2-2.0mm), with antioxidants and weathering agents added to improve anti-aging ability. The outdoor N2xh models use weather-resistant PVC or polyethylene (PE) sheaths, which are ultraviolet-resistant and have good waterproof performance. Medium-voltage models and Xmvk for special scenarios use tougher sheath materials with strong resistance to mechanical damage. Some models have sheaths added with flame retardants (oxygen index ≥30%), meeting flame retardant requirements.

Structural Advantages

The cable adopts a multi-layer structure of "conductor → insulation layer → shielding layer (some models) → sheath". The outer layer of the conductor is tightly wrapped with the insulation layer, which is bonded without bubbles through the extrusion process to ensure the insulation effect. Medium-voltage models and some low-voltage precision models (such as Xmvk) are equipped with a semi-conductive shielding layer to reduce electric field concentration and improve operation stability. The sheath is closely bonded with the internal structure to form an overall protection, which can resist external mechanical impact and environmental erosion.

This structural design enables the cable to have both electrical safety and environmental adaptability. The targeted optimization of different models (such as weather-resistant insulation and flame-retardant sheaths) allows it to operate stably in complex scenarios such as outdoor, high-temperature, and dusty environments.

(III) Characteristic Uses and Scene Adaptation

Core Application Fields of Each Model

N2xy, CV: Suitable for power distribution trunk lines of industrial plants and low-voltage power distribution systems of commercial complexes. As the main line of power transmission, they can stably carry medium-power loads and are suitable for dry and ventilated indoor environments.

N2xh, N2xh-J: N2xh is suitable for outdoor power distribution scenarios, such as main lines of municipal road lighting and outgoing lines of outdoor substations. N2xh-J (medium-voltage model) can be used as a medium-voltage power distribution line in industrial parks to connect medium-voltage switch cabinets and transformers.

Xmvk: Suitable for industrial environments with oil stains or mild corrosion, such as power supply lines of equipment in machinery factories and chemical plants. Its chemical corrosion resistance can ensure long-term stable operation.

Yxv-U: Mostly used for power distribution lines in strong current shafts and underground garages of buildings. It has good mechanical strength and can adapt to concealed laying scenarios.

Advantages of Scene Adaptation

In outdoor high-temperature environments, the weather-resistant insulation and sheath of N2xh can resist ultraviolet rays and temperature changes, avoiding aging and cracking. In dusty industrial workshops, the tight structure of the cable can prevent dust from entering and reduce the risk of failures. When Xmvk comes into contact with oil stains, the sheath and insulation layer will not swell, ensuring stable insulation performance. Medium-voltage models can meet the long-distance and large-capacity power transmission needs of industrial parks and reduce line losses.

(IV) Production Process and Quality Control

Key Production Processes

Conductor Stranding: A high-speed cage stranding machine is used, and stranding parameters are set according to the cross-sectional area and the number of strands to ensure that the conductor structure is tight and round. The Stranded Conductor is subjected to surface treatment to remove the oxide layer and impurities.

Insulation Extrusion: A special extruder is used for XLPE insulation, with the melting temperature controlled at 200-220°C, and the extrusion speed adjusted according to specifications (about 15m/min for the 120mm² model). An online thickness gauge is used to monitor the insulation thickness in real-time, with a deviation of ≤±0.1mm. For models with weather-resistant agents added, the proportion of additives is strictly controlled before extrusion to ensure uniform mixing.

Shielding Layer Treatment (Some Models): The semi-conductive shielding layer is made by extrusion or wrapping process, which is closely bonded with the insulation layer with a smooth interface and no gaps to avoid local electric field concentration.

Sheath Extrusion: Extrusion equipment is selected according to the sheath material. The extrusion temperature of PVC Sheath is 160-180°C, and that of PE sheath is about 180-200°C. After extrusion, it is shaped in a cooling water tank, and the cooling water temperature is gradually reduced (20-30°C) to avoid internal stress in the sheath due to temperature difference.

Quality Inspection Standards

Each batch of cables must undergo multiple tests: basic parameter tests such as conductor DC resistance, insulation thickness, and sheath thickness; electrical performance tests such as insulation resistance, power frequency withstand voltage, and partial discharge; mechanical performance tests such as sheath tensile strength and elongation at break. For models with special performance, special tests are also required, such as the ultraviolet aging test of N2xh (performance retention rate ≥80% after 1000h of irradiation) and the oil resistance test of Xmvk (volume change rate ≤5% after 24h of immersion). Products can leave the factory only after all tests are qualified, and test data are archived for traceability.

II. Description of General Product Information

(I) Packaging Specifications

Packaging Form

Choose packaging methods according to cable length and specifications: short-length cables (within 100m) are packaged in hard paper tubes, with moisture-proof paper lined on the inner wall of the paper tubes and sealed with plastic covers at both ends; long-length cables use steel-wood structure cable reels, with the diameter determined according to specifications (the 120mm² model is about 1.5m), and each reel can hold 200-500m of cables.

There are clear marks on the outside of the package, including model, specification, rated voltage, length, production date, batch number, and manufacturer information. Product qualification certificates are pasted on both the cable reels and paper tubes, indicating key performance parameters and test results.

Protection Design

The outer side of the cable reel is wrapped with waterproof plastic film, the wooden part is painted with anti-corrosion paint, and 8mm thick iron sheet guard rings are added to the edges to prevent damage due to collision during transportation. Sealant is added to the sealing positions at both ends of the paper tube to enhance moisture-proof performance. A load-bearing lifting hole is set in the center of the cable reel, equipped with a high-strength lifting ring, suitable for loading and unloading by forklifts and cranes.

(II) Transportation and Storage Requirements

Transportation Specifications

Road Transportation: Use a fence truck. Place the cable reel flat and fix it, bind it to the carriage with steel wire ropes (put rubber pads at the contact points), and leave a 30cm gap between reels to prevent friction. The stacking height of cables packaged in paper tubes shall not exceed 3 layers, and buffer pads shall be placed between layers.

Railway/Maritime Transportation: Load according to transportation standards to ensure that the package is stable and avoid violent 颠簸. During maritime transportation, an additional waterproof cloth must be covered to prevent seawater erosion.

Loading and Unloading Requirements: When lifting, lift from the central hole of the cable reel. Oblique lifting or single-point lifting is prohibited. Cables packaged in paper tubes shall be handled with care to avoid falling.

Storage Conditions

They should be stored in a dry and ventilated indoor warehouse with a temperature of -15°C to 40°C and a relative humidity of ≤75%. The cable reel must be placed on skids to keep away from the ground and prevent moisture. Cables packaged in paper tubes shall be stacked neatly, away from heat sources, corrosive substances, and open flames. The storage period is 2 years. During this period, inspections shall be carried out every 3 months to check whether the sheath is cracked or discolored and whether the insulation resistance meets the standard (≥100MΩ·km). If it exceeds the storage period, re-inspection is required.

(III) Delivery and Sample Services

Delivery Process

Order Processing: Conventional models (such as N2xy 120mm²) are in stock. After receiving the order, the inventory is confirmed and delivery is arranged within 24 hours. Special models or large specifications (such as 400mm²) require a 5-7 day production cycle, and customers are informed in advance.

Stock Preparation and Inspection: Before delivery, check the appearance and marks of the cable, randomly select samples to test insulation resistance and conductivity, and ensure they are consistent with the order.

Logistics Arrangement: Choose the transportation method according to the order quantity. Small batches are delivered by express, and large batches are transported by logistics special lines. After delivery, provide the logistics tracking number and tracking information for customers to inquire.

Sample Policy

Customers can apply for free samples with a length of 1m, including a complete structure. The application must provide company information and purpose. Samples are sent by express, and the freight is to be paid by the customer (can be negotiated for deduction after subsequent cooperation). The samples are attached with material descriptions and abridged test reports to facilitate customers' testing and evaluation.

(IV) After-Sales Service Guarantee

Quality Commitment

The product warranty period is 2 years (from the date of delivery). During the warranty period, products with quality problems caused by non-human factors (such as insulation breakdown and sheath cracking) will be replaced free of charge, and the round-trip freight will be borne. For man-made damage (such as mechanical damage), paid maintenance is provided with transparent charges.

Problem Handling

Response Time: Respond within 2 hours during working hours (8:00-18:00) and within 4 hours during non-working hours to understand and record the details of the problem.

Solutions: Provide repair plans for minor problems (such as sheath scratches). For serious problems, determine the replacement or repair plan within 48 hours, and give priority to urgent orders.

On-site Support: When technical personnel need to be present, they will arrive in adjacent areas within 24 hours and in remote areas within 48 hours to assist in troubleshooting and problem-solving.

Additional Services

Technical Support: Provide selection guidance, recommend models according to scenarios, power, voltage, etc.; provide the "Laying and Maintenance Manual", including installation specifications and daily inspection points.

Training Services: Provide free training for bulk purchase customers, explaining cable characteristics, laying precautions, and troubleshooting methods.

Regular Return Visits: Conduct return visits 1 month and 6 months after delivery to understand the usage situation, collect feedback, and make improvements.

III. Summary of Product Advantages

High-performance cables of models such as N2xy take high-quality conductors as the core, and achieve low-loss and high-stability power transmission through material optimization and structural design. The scenario-based adaptation of different models (such as outdoor weather resistance and anti-corrosion and oil resistance) enables them to cover multiple fields such as industry, construction, and outdoor. Strict control in the production process and perfect testing ensure reliable product quality.

Standardized operations in packaging, transportation, and storage reduce the risk of damage during circulation, and delivery, sample, and after-sales services provide convenience for customers. Whether it is conventional power distribution or power supply in special environments, this series of cables can become a reliable power transmission choice with performance advantages and service guarantees.