U-1000 Ar2V Axmk Na2xy Axv Yakxs 1kv Cables 4X25mm2 4X35mm 4X120mm 4X240mm

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2025-07-25 06:12:44

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Introdução ao produto

Details of U-1000 Series Cable Products

I. Core Information of the Product Itself

(I) Detailed Explanation of Specification Parameters

Basic Specification Classification

The U-1000 series cables cover mainstream models such as Ar2V, Axmk, Na2xy, Axv, and Yakxs, with a unified rated voltage of 1kV. They include four core specifications: 4×25mm², 4×35mm², 4×120mm², and 4×240mm². "4×" represents a four-core independent insulation structure. Each core conductor is individually covered with an insulation layer and then integrated into a whole, which can avoid signal interference between core wires. The cross-sectional area increases stepwise from 25mm² to 240mm², adapting to different power requirements.

Under the conditions of an ambient temperature of 25°C and laying in the air, the long-term allowable current-carrying capacity of each specification is: about 85A for 25mm², about 110A for 35mm², about 230A for 120mm², and about 400A for 240mm². Calculated according to the three-phase power formula P=√3×0.38kV×I×0.85, it can carry loads of 45kW, 58kW, 121kW, and 210kW respectively, covering the power supply needs of small, medium, and high-power equipment. The outer diameter of the cable increases with the increase of the cross-sectional area (about 22mm for 25mm² and about 48mm for 240mm²), and the bending radius is 10-12 times the outer diameter, meeting the space requirements of most laying scenarios.

Voltage and Safety Parameters

The rated voltage is 1kV (Um=1.2kV), which complies with the GB/T 12706.1-2020 standard. Among them, the phase voltage is 0.6kV and the line voltage is 1kV, which can be directly connected to the 380V/220V low-voltage power distribution system. The insulation resistance is ≥100MΩ·km (at 20°C), there is no breakdown in the power frequency withstand voltage test at 3kV for 5 minutes, and the partial discharge capacity is ≤10pC (under 1.73U0), ensuring long-term safe operation under the rated voltage. The DC resistance of the conductor ranges from ≤0.727Ω/km (25mm²) to ≤0.0754Ω/km (240mm²), and the power transmission loss is lower than the industry average.

(II) Material and Structural Design

Core Material Composition

Conductor: All series use high-purity electrolytic copper (copper content ≥99.95%). The 25-35mm² specifications are stranded with 19 strands of fine Copper Wires (Class 2 conductors), and the 120-240mm² specifications are stranded with 37 strands. This not only ensures conductive performance (conductivity ≥58MS/m) but also improves Flexibility (not easy to break when bent). The copper wires are annealed (400-450°C), with a smooth surface and no oxidation, reducing current transmission resistance.
Insulation Layer: Two types of materials are used according to different models. Ar2V and Na2xy use polyvinyl chloride (PVC) insulation (thickness 1.2-2.0mm), which is temperature-resistant from -15°C to 70°C and suitable for dry environments. Axv and Yakxs use cross-linked polyethylene (XLPE) insulation (thickness 1.0-1.8mm), which is temperature-resistant from -40°C to 90°C and can withstand short-term overload up to 130°C, suitable for humid or large temperature difference scenarios. Both materials have excellent dielectric properties and stable dielectric constants.
Sheath: PVC Sheaths (Ar2V, Na2xy) are added with antioxidants, with a tensile strength of ≥12MPa and an elongation at break of ≥125%, which are wear-resistant and moderately priced. XLPE sheaths (Axv, Yakxs) have weather resistance, anti-ultraviolet aging, and can have a service life of more than 8 years when laid outdoors. Some models (such as Yakxs) have sheaths added with flame retardants (oxygen index ≥30%), which meet the GB/T 2406.2 flame retardant Class 1 standard.

Structural Advantages

The cable adopts a four-layer structure of "conductor → insulation layer → filling layer → sheath". The outer layer of the conductor is tightly wrapped with the insulation layer (attached without bubbles through the extrusion process). The four cores are arranged symmetrically (120° distribution), and the gaps are filled with polypropylene ropes (non-hygroscopic) to ensure roundness (ellipticity ≤5%). The outermost layer is covered with a sheath to form mechanical protection. This design enables the cable to have both electrical safety and mechanical strength - the insulation layer blocks current leakage, the sheath resists external impact, and the filling layer avoids uneven stress on the core wires during laying.

Different models are optimized for scenarios: Axmk and Yakxs are added with an aluminum-plastic composite Tape Shielding layer (thickness 0.2mm), which can reduce electromagnetic interference and is suitable for power supply of precision equipment. The sheath thickness of Na2xy is increased to 2.5mm, which has stronger resistance to mechanical damage and is suitable for laying in industrial workshops.

(III) Characteristic Uses and Scene Adaptation

Application Scenarios by Specification

4×25mm²: Suitable for power supply of small equipment (such as fans, water pumps, lighting distribution boxes), residential household distribution trunks, and independent circuits of commercial stores (power ≤45kW).
4×35mm²: Used for medium-sized equipment (such as injection molding machines, elevators), office building floor distribution branches, and municipal street lamp main lines (power ≤58kW).
4×120mm²: Adapted to large industrial equipment (such as CNC machine tools, compressors), commercial complex distribution trunks (from low-voltage cabinets to floors), and hospital operating room power supply (power ≤121kW).
4×240mm²: Used as the main cable of factory workshops, the main line of high-rise building strong current shafts, and the power supply of sewage treatment plant pump stations (power ≤210kW).

Model Scene Subdivision

Ar2V, Na2xy (PVC Insulation/sheath): Suitable for dry indoor environments (such as office buildings, residences), with moderate cost and convenient installation.
Axv, Yakxs (XLPE insulation/sheath): Adapted to humid (basement), outdoor (street lamp) or large temperature difference (northern regions) scenarios, with better weather resistance.
Axmk (with shielding layer): Used for precision instruments (such as laboratory equipment, PLC control cabinets) to reduce electromagnetic interference.

(IV) Production Process and Quality Control

Key Production Processes

Conductor Stranding: A cage stranding machine is used, with a stranding pitch of 30-40 times the conductor diameter (the pitch of 25mm² is ≤80mm, and that of 240mm² is ≤180mm) to ensure structural stability.
Insulation Extrusion: A Φ65 extruder is used for PVC insulation (melting temperature 160-180°C), and a Φ90 extruder is used for XLPE insulation (200-220°C). An online thickness gauge is used to monitor the thickness in real-time (deviation ≤±0.1mm).
Cabling and Shielding: When four cores are cabled, non-woven fabric is wrapped for fixation. Shielded models are longitudinally wrapped with aluminum-plastic composite tape (overlap rate ≥20%) to ensure uniform shielding.
Sheath Extrusion: A Φ90-120 extruder is used to adjust the temperature according to the material (PVC 160-180°C, XLPE 200-220°C). The cooling water temperature is 20-30°C to avoid cracking, and a 15kV spark test is performed after extrusion to detect pinholes.

Quality Inspection Standards

Each batch of cables must pass 15 tests:

Electrical performance: Conductor resistance, insulation resistance, withstand voltage test, partial discharge capacity;
Mechanical performance: Sheath tensile strength, insulation elongation at break, bending test (no cracks after bending);
Environmental adaptability: Ozone resistance (200ppm/72h no cracks), heat aging (80°C×168h performance retention rate ≥80%).

Test data are archived for traceability, and a test report (including batch number) is attached with the goods.

II. Description of General Product Information

(I) Packaging Specifications

Packaging Form

A steel-wood structure cable reel is used (diameter 1.2-2.0m, matched according to specifications): 25-35mm² can hold 200m per reel (weight 150-200kg), and 120-240mm² can hold 50-100m per reel (weight 300-600kg). Both ends of the cable are sealed with heat-shrinkable caps (waterproof IP65). A metal identification plate is nailed on the reel (marked with model, specification, length, voltage, production date), and a product certificate (including key parameters such as insulation resistance and current-carrying capacity) is attached.

Protection Design

The wooden part of the reel is painted with anti-corrosion paint (salt spray resistance ≥500h), the outer side is wrapped with two layers of waterproof film (0.12mm thick), and 8mm thick iron sheet guard rings (10cm high) are added to the edges to prevent collision. A Φ50-80mm shaft hole is reserved in the central axis, and a lifting ring with a load-bearing capacity of 1-2t (Q235 steel) is equipped, which is suitable for loading and unloading by forklifts and cranes.

(II) Transportation and Storage Requirements

Transportation Specifications

Road Transportation: Loaded with a 6.8m or longer fence truck. A single vehicle can carry 30 reels of 25-35mm² (≤6t) and 10 reels of 120-240mm² (≤6t). The reels are placed flat and fixed, bound with steel wire ropes (rubber pads are placed at the contact points), and a 30cm gap is left between reels to prevent friction.
Loading and Unloading Requirements: When hoisting, hoist from the central axis (oblique hoisting is prohibited) and place it gently when landing. For short-distance handling, a manual forklift is used (fork depth ≥30cm), and the inclination angle is ≤15°.
Extreme Weather: Cover with a rain cloth (PU2000mm waterproof) on rainy days, and cover with a sunshade net at high temperatures (≥35°C) to avoid sheath aging.

Storage Conditions

Store in a dry and ventilated warehouse (humidity ≤70%), and lay 10cm high skids on the ground to prevent moisture. Keep away from heat sources (≥1m) and corrosive substances. The storage period is ≤2 years, and inspections are carried out every 3 months - the sheath has no cracks and the insulation resistance is ≥100MΩ, which is considered qualified. If it exceeds the storage period, it needs to be re-inspected.

(III) Delivery and Sample Services

Delivery Process

Order Processing: There are 5000m of spot goods for conventional models (Ar2V, Na2xy), which will be shipped within 24 hours. The production cycle of special models (Axv, Yakxs) is 7-10 days.
Logistics Selection: Send special line logistics within 500km (arrival in 2-3 days), and send a full truckload for more than 500km (arrival in 4-5 days). Provide logistics tracking numbers and real-time tracking.
Arrival Notification: Inform the logistics information within 2 hours after shipment, and send a text message to remind the recipient to prepare for unloading 24 hours before arrival.

Sample Policy

Provide 1m long samples for free (limited to 2 sections/model), including complete structure and material test reports. They are sent by express (freight collect) and can be deducted from the payment after placing an order. Destructive testing (such as cross-sectional analysis, temperature resistance testing) is supported, and testing guidance is provided.

(IV) After-Sales Service Guarantee

Quality Commitment

The warranty period is 2 years (from the date of delivery). During the warranty period, non-human quality problems (such as insulation breakdown, sheath cracking) will be replaced for free and the freight will be borne. For man-made damage (such as mechanical scratches), paid maintenance (material fee + labor fee) 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.
Solutions: Send repair kits (PVC tape + sealant) for slight sheath damage. For serious problems, reissue within 48 hours (urgent orders are prioritized for production).
On-site Support: When technical personnel need to be present, they will arrive in adjacent provinces within 24 hours and in remote areas within 48 hours (travel expenses are borne by the supplier).

Additional Services

Provide "Current-Carrying Capacity Comparison Table" (including correction values for different laying methods) and "Laying Guide" (bending radius, fixed spacing, etc.). Provide free wiring videos (insulation layer stripping, terminal head production). Conduct regular return visits (1 month and 1 year after arrival) to remind of insulation testing.

III. Summary of Product Advantages

The U-1000 series cables cover all low-voltage power distribution scenarios with "multiple models + full specifications". The 25-240mm² specifications are adapted to 45-210kW loads. PVC/XLPE materials are subdivided into dry/humid environments, and the four-core structure is directly connected to the three-phase four-wire system. 15 tests in the production process and a 2-year warranty ensure reliability, and flexible delivery and after-sales services improve the purchasing experience.

Whether it is power supply for small equipment or power distribution for large buildings, users can accurately meet their needs through specification matching (select cross-sectional area according to power) and model selection (select materials according to the environment), and enjoy full-cycle support from selection to use.