This series of aluminum core high-voltage cables covers two structural types: single core and three core. They use high-purity electrical aluminum conductors, XLPE cross-linked polyethylene insulation, flame-retardant polyvinyl chloride (PVC)/weather resistant polyethylene (PE)/low smoke halogen-free sheath, galvanized steel strip/steel wire armor, and strictly follow international and domestic authoritative standards such as GB/T 12706-2022, IEC 60502-2, GB/T 11017-2014. They have core advantages such as wide rated voltage adaptability, significant cost advantages, lightweight cable, convenient laying, good weather resistance, and long service life. They can meet the power transmission needs of various scenarios such as medium and high voltage distribution networks, temporary infrastructure, and auxiliary power supply, and are suitable for the connection and transmission scenarios of various high-voltage transformers, distribution cabinets, and power supply equipment.
Product Parameter
|
Model |
YJLV22-6/10kV aluminum core high-voltage cable (single core/three core, universal for distribution network) |
YJLV22-26/35kV aluminum core high-voltage cable (single core/three core, industrial auxiliary version) |
YJLV22-64/110kV aluminum core high-voltage cable (single core/three core, for power grid distribution network) |
YJLV32-26/35kV aluminum core high-voltage cable (single core/three core, temporary infrastructure payment) |
|
Rated voltage (U0/U) |
6/10kV |
26/35kV |
64/110kV |
26/35kV |
|
Conductor material |
High purity electrical aluminum (Al ≥ 99.7%) |
High purity electrical aluminum (Al ≥ 99.7%) |
High purity electrical aluminum (Al ≥ 99.8%) |
High purity electrical aluminum (Al ≥ 99.7%) |
|
conductor structure |
Stranded conductor (Class 2, Class 2 conductor) |
Tightly pressed twisted conductor (Class 2, Class 2 conductor) |
High density compressed twisted conductor (Class 2, Class 2 conductor) |
High density compressed twisted conductor (Class 2, Class 2 conductor) |
|
Conductor cross-section (mm ²) |
Single core: 70~400; Three core: 3 × 50~3 × 240 |
Single core: 95~630; Three core: 3 × 70~3 × 400 |
Single core: 150~1000; Three core: 3 × 150~3 × 800 |
Single core: 95~630; Three core: 3 × 70~3 × 400 |
|
insulating material |
XLPE cross-linked polyethylene |
XLPE cross-linked polyethylene |
High density XLPE cross-linked polyethylene |
Corrosion resistant XLPE cross-linked polyethylene |
|
Insulation thickness (mm) |
4.0~9.5 |
7.5~14.0 |
16.5~25.5 |
7.5~14.0 |
|
Sheath material |
PVC polyvinyl chloride (flame retardant) |
PE polyethylene (weather resistant) |
PE polyethylene (high-strength) |
PVC polyvinyl chloride (corrosion-resistant and flame-retardant) |
|
armor layer |
Galvanized steel strip armor (double-layer) |
Galvanized steel strip armor (double-layer) |
Galvanized steel wire armor (multi-layer) |
Galvanized steel wire armor (reinforced type) |
|
Cable outer diameter (mm) |
Single core: 27.5-59.8; Three core: 40.2~75.5 |
Single core: 34.8~78.5; Three core: 55.6~102.3 |
Single core: 60.5-118.8; Three core: 98.5-172.6 |
Single core: 40.2~85.6; Three core: 60.8~108.5 |
|
Reference weight (kg/km) |
Single core: 850~3200; Three core: 1050~3800 |
Single core: 1450~5800; Three core: 1950~6800 |
Single core: 4800~18500; Three core: 7500~23800 |
Single core: 1650-6200; Three core: 2250~7200 |
|
Rated current carrying capacity (A, 25 ℃) |
Single core: 140~420; Three core: 105~320 |
Single core: 190~620; Three core: 145~460 |
Single core: 320-950; Three core: 250~750 |
Single core: 200~650; Three core: 155~480 |
|
Operating Temperature |
The long-term allowable working temperature of the conductor is ≤ 90 ℃, and during short circuit, it is ≤ 200 ℃ (5s) |
The long-term allowable working temperature of the conductor is ≤ 90 ℃, and during short circuit, it is ≤ 200 ℃ (5s) |
The long-term allowable working temperature of the conductor is ≤ 90 ℃, and during short circuit, it is ≤ 200 ℃ (5s) |
The long-term allowable working temperature of the conductor is ≤ 90 ℃, and during short circuit, it is ≤ 200 ℃ (5s) |
|
ambient temperature |
-40 ℃~70 ℃ (laying and operation) |
-40 ℃~70 ℃ (laying and operation) |
-40 ℃~75 ℃ (laying and operation) |
-40 ℃~75 ℃ (laying and operation) |
|
laying method |
Direct burial, conduit installation, cable trench, bridge frame |
Directly buried, through pipes, cable trenches, cable trays, tunnels |
Direct burial, cable trench, cable tray, tunnel, overhead |
Direct burial, pipe penetration, temporary pipe trench, outdoor laying |
|
Flame retardant rating |
B-level (customizable A-level) |
B-level (customizable A-level) |
B-level (customizable A-level) |
A-level (mandatory flame retardant) |
Note: The above are standard parameters, and the conductor cross-section, insulation thickness, sheath material, and structural type (single core/three core) can be customized according to user needs; The rated current carrying capacity may fluctuate slightly due to the installation environment and heat dissipation conditions; Please refer to the physical object and inspection report for details.
Product feature and application
The conductor is made of high-purity electrical aluminum (Al ≥ 99.7%), and the flagship model for medium and high voltage uses special grade electrical aluminum (Al ≥ 99.85%). The aluminum content meets international electrical standards, and the conductivity is suitable for medium and high voltage medium and short distance transmission needs; The resistivity is ≤ 0.0282 Ω· mm ²/m, and the loss is controllable in medium to short distance transmission scenarios; Compared to copper core cables, the cost of aluminum core materials has been reduced by more than 40%, significantly reducing project procurement costs. At the same time, the supply of raw materials is stable and there is no significant price fluctuation risk; Adopting high-density compression twisting technology, the conductor filling rate is high, the structure is stable, and it can meet the needs of medium and high voltage medium and short distance transmission. It is the preferred solution for cost sensitive scenarios.
Lightweight structural design significantly reduces installation costs
The density of aluminum core conductors is only about 30% of copper, and under the same specifications, the weight of aluminum core cables is reduced by 35% to 45% compared to copper core cables, indicating a significant advantage in lightweighting; The overall weight of the cable is light and the flexibility is good. It can be manually laid without the need for large laying machinery, which can significantly reduce the cost of laying labor and equipment rental; Suitable for long-distance traction laying, high-altitude overhead laying and other scenarios, the laying efficiency is improved by more than 30%; Both single core and three core structures have good bending performance, with a small bending radius (single core ≥ 15 times the outer diameter of the cable, three core ≥ 20 times the outer diameter of the cable), which can adapt to complex laying paths and further reduce construction difficulty and costs.
The insulation layer is made of high-quality XLPE cross-linked polyethylene material, and the medium and high voltage models use dedicated XLPE material for medium and high voltage. After high-temperature cross-linking treatment, it has excellent insulation performance, high voltage resistance, and temperature resistance; Accurate control of insulation thickness, insulation resistance ≥ 1000M Ω· km, breakdown voltage ≥ 32kV/mm, can effectively resist the risk of high voltage electric field breakdown from 6kV to 110kV, ensuring the safety of high voltage transmission; XLPE material has strong chemical stability, is not easy to age, crack, or deform, and can operate stably in a high temperature environment of 90 ℃ for a long time. It has excellent aging resistance and a long service life; The insulation layer is tightly adhered to the conductor, without bubbles or impurities, further enhancing insulation reliability.
Equipped with double-layer galvanized steel strip/multi-layer galvanized steel wire armor layer, temporary infrastructure funds adopt reinforced steel wire armor, matched with high-strength sheath, forming a triple protection structure of "insulation layer+armor layer+sheath layer"; The tensile strength of the armor layer is ≥ 120MPa, and the compressive strength is ≥ 180MPa. It can effectively resist the external forces such as conventional mechanical damage, compression, tension, and impact during laying and operation, and is suitable for conventional scenarios such as urban and rural distribution networks, temporary infrastructure, and industrial assistance; Galvanized treatment has excellent rust and corrosion resistance, and can adapt to complex environments such as humidity, underground, and outdoor environments, extending the service life of cables.
It can be used in various scenarios.
1. Power grid backbone/distribution network scenario
Suitable for scenarios such as power grid backbone lines, distribution stations, substations, regional power supply centers, urban and rural power grid renovation, and ultra-high voltage transmission projects
2. Industrial heavy-duty scenarios
Suitable for heavy-duty scenarios such as large industrial plants, heavy-duty workshops, large production lines, industrial distribution stations, and heavy industry enterprises
3. Mining/Port Scene
Suitable for extreme scenarios such as mining, mining tunnels, port terminals, open-pit mines, port loading and unloading areas, etc
4. Municipal/architectural scenes
Suitable for municipal infrastructure, urban rail transit, high-rise buildings, large commercial complexes, urban underground pipe galleries and other scenarios
5. New energy scenarios
Suitable for scenarios such as photovoltaic power plants, wind power plants, energy storage power plants, and new energy grid connected projects
Production details
① Conductor: High purity electrical aluminum/special grade electrical aluminum is selected and processed through high-density compression twisting technology. The surface of the conductor is smooth, the density is high, the conductivity is suitable for medium and high voltage requirements, the resistance is stable, and the loss is controllable; Accurate control of the twisting pitch ensures the stability of the conductor structure and avoids looseness and breakage during the laying process; The medium and high voltage conductors adopt a special tight pressing process, with a filling rate of over 92%, further optimizing the conductivity performance.
② Insulation layer: Made of high-quality XLPE cross-linked polyethylene/medium high voltage special XLPE material, cross-linked at high temperature and continuously extruded into shape, with uniform insulation thickness, no bubbles or impurities, high insulation resistance, and high breakdown voltage; The insulation layer is closely adhered to the conductor, which can effectively resist the risk of breakdown by medium and high voltage electric fields and ensure stable insulation performance; The insulation layer of the medium and high voltage models adopts a multi-layer composite structure to further enhance the voltage resistance performance.
③ Filling layer: Using flame-retardant polypropylene filling rope, the filling is uniform and tight, ensuring the symmetrical and stable structure of the three core conductor, and avoiding conductor displacement during the laying process; It has good flame retardant and buffering properties, which can reduce the damage to conductors and insulation layers caused by external impact forces.
④ Armor layer: Galvanized steel strip/wire is armored and formed by specialized equipment, with uniform and tight arrangement of steel strip/wire, and mechanical strength suitable for conventional scenarios; The thickness of the galvanized layer meets the standard (≥ 80 μ m), with excellent rust and corrosion resistance, and can adapt to conventional humid environments; The reinforced/specialized armor adopts multi-layer steel wire twisting, which greatly improves the impact resistance and tensile resistance performance.
⑤ Sheath layer: Made of flame-retardant PVC/weather resistant PE/low smoke halogen-free PE materials, extruded and formed, the thickness of the sheath is uniform, the surface is smooth, and it has good weather resistance, corrosion resistance, and flame retardancy; The sheath and armor layer are tightly adhered, effectively protecting the armor layer and internal structure, and extending the service life of the cable.
Product Certification
Aluminum core high-voltage cable relies on high-quality core materials, advanced production technology, strict quality control system, and comprehensive testing process. It has passed multiple international authoritative certifications and industry certifications, with complete qualifications and guaranteed quality
FAQ
Q: What is the difference between aluminum core high-voltage cables and copper core high-voltage cables? How to choose?
A: The core difference lies in material performance, cost, and applicable scenarios: ① Conductivity: Aluminum core cables have high resistivity (≤ 0.0282 Ω· mm ²/m), controllable transmission loss over medium and short distances, and are suitable for medium and low voltage scenarios; Copper core cables have low resistivity (≤ 0.017241 Ω· mm ²/m), low transmission loss, and are suitable for high voltage and long-distance scenarios; ② Mechanical performance: Aluminum core cables are lightweight, flexible, and easy to lay, but their ductility is slightly poor. Long term use requires attention to joint protection; Copper core cables have excellent ductility and tensile strength, and are not easily broken or aged; ③ Service life: The service life of aluminum core cables is ≥ 20 years, and the service life of copper core cables is ≥ 30 years; ④ Cost: Aluminum core cable material has a cost reduction of over 40% and outstanding cost-effectiveness; Copper core cables have high costs. Selection suggestion: For medium to high voltage, medium to short distance, cost sensitive, temporary infrastructure, and distribution network scenarios (urban and rural distribution network, temporary engineering, auxiliary power supply), aluminum core high-voltage cables are preferred; High voltage, ultra-high voltage, long-distance, high-power, and long-term operating scenarios (main lines of power grids, industrial heavy loads, and main lines of new energy power stations), copper core high-voltage cables are preferred.
Q: How to choose between single core and three core aluminum core high-voltage cables?
A: Select based on voltage level, installation space, and transmission requirements: ① Voltage level: 6kV~35kV medium voltage scenario, prioritize three core structure, high installation efficiency, small space occupation, suitable for distribution network and auxiliary power supply scenarios; 64kV~110kV medium and high voltage scenarios, with priority given to single core structures, suitable for medium and short distance transmission and overhead laying of medium and high voltage; ② Laying space: Cable trenches, cable trays, underground pipe galleries, building pipelines and other narrow spaces, choose a three core structure, no need for multiple laying, saving space; Outdoor overhead, long-distance traction laying, single core structure, significant lightweight advantages, flexible bending, and convenient laying; ③ Transmission requirements: Three phase power supply, no need for phase separation scenarios (urban and rural distribution network, high-rise buildings, industrial park auxiliary), choose a three core structure; Scenarios that require flexible phase separation and separate maintenance (medium and high voltage distribution networks, municipal tunnels), with a single core structure.
Q: How to choose the rated voltage and conductor cross-section of aluminum core high-voltage cables?
A: ① Rated voltage selection: determined based on the rated voltage of the power supply system, it is necessary to meet the requirement of "cable rated voltage U0/U ≥ system rated voltage" and adapt to the maximum working voltage of the system. For example, in a 10kV distribution network system (maximum working voltage 12kV), select cables with U0/U=6/10kV; 35kV industrial auxiliary system (maximum working voltage 40.5kV), choose U0/U=26/35kV cable; Select cables with U0/U=64/110kV for the 110kV medium and high voltage system. ② Conductor cross-section selection: Aluminum core cables need to be selected according to the "copper core cross-section × 1.5 times" (due to slightly poor aluminum conductivity), determined based on the total load power, transmission distance, and allowable loss. The core formula is: conductor cross-section S (mm ²) ≥ (P × L × 1.5)/(K × Δ U × U ²) (P is load power, L is transmission distance, K is aluminum conductor conductivity, Δ U is allowable voltage loss); At the same time, it is necessary to meet the current carrying capacity requirements, avoid overload heating, and additionally consider corona losses in medium and high voltage scenarios. Example: A 35kV system with a load power of 3000kW, a transmission distance of 0.8km, and an allowable voltage loss of 5%. It is recommended to choose a conductor cross-section of 3 × 300mm ² (three core) or 300mm ² (single core).
Q: Can aluminum core high-voltage cables be used in outdoor, underground, industrial park and other environments?
A: Okay. This series of aluminum core high-voltage cables has excellent weather resistance, corrosion resistance, and mechanical properties, and can be adapted to conventional complex environments such as outdoor, underground, industrial parks, high-rise buildings, etc.: ① Outdoor environment: weather resistant PE, low smoke halogen-free PE sheath can resist ultraviolet rays, wind and rain, high and low temperatures, etc., long-term outdoor laying without aging or cracking; ② Underground environment: Galvanized armor layer and corrosion-resistant sheath can resist soil corrosion, moisture, and groundwater erosion, avoiding corrosion and insulation damage caused by underground environment; ③ Industrial park environment: Oil resistant and corrosion-resistant sheaths can resist workshop oil stains and chemical corrosion, suitable for complex environments in industrial parks; ④ High rise building environment: Lightweight structure suitable for vertical installation, flame retardant performance meets fire safety requirements, suitable for densely populated scenes; ⑤ Medium and high voltage scenarios: The dedicated sheath and armor can resist conventional temperature, humidity, and external impact, and are suitable for medium and high voltage distribution network scenarios.
Packing & Shipping
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