Caai Caai-S Aluminum Cable 325+116 335+125 XLPE Insulated Cable

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2025-07-30 07:55:49

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Introduction du produit

Caai Caai-S Aluminum Cable 325+116 335+125 XLPE Insulated Cable

1. Introduction

The Caai Caai-S Aluminum Cable series, available in 325+116mm² and 335+125mm² configurations, represents a sophisticated solution in low-voltage power distribution. These 4-Conductor Cables—combining Three Phase Conductors and one neutral—are engineered to deliver reliable performance in 0.6/1kV systems, bridging the gap between industrial robustness and commercial efficiency.

Crafted from 1350-H19 aluminum alloy (61% IACS conductivity), the series balances conductivity and cost-effectiveness, making it suitable for diverse applications from factory floors to shopping malls. The integration of cross-linked polyethylene (XLPE) insulation ensures 30-year service across extreme climates, while the 7-strand conductor design enhances Flexibility without compromising structural integrity.

This comprehensive guide explores the cables’ intricate engineering, from their stranded Aluminum Conductors to their UV-resistant insulation, highlighting how each component contributes to their status as a preferred choice for modern power distribution. We’ll examine their compliance with global standards, installation methodologies, and real-world applications, demonstrating why they have become indispensable for projects demanding both reliability and economic efficiency.

2. Conductor Design: 7-Strand Aluminum Engineering

The cables’ 7-strand Aluminum Conductors represent a masterclass in balancing flexibility and performance:

325+116mm² Configuration: Three phase conductors (25mm² each) and one neutral conductor (16mm²), each comprising 7 strands of 2.1mm diameter 1350-H19 aluminum. This structure delivers:

110A continuous current (phase) at 90°C

70A continuous current (neutral) at 90°C

1.8kg total weight per meter (including insulation)

335+125mm² Configuration: Three phase conductors (35mm² each) and one neutral conductor (25mm²), each comprising 7 strands of 2.5mm diameter 1350-H19 aluminum, providing:

140A continuous current (phase) at 90°C

90A continuous current (neutral) at 90°C

2.2kg total weight per meter (including insulation)

Stranding Advantages: The 7-strand design with 12× lay length (12 times conductor diameter) offers:

Enhanced flexibility, allowing bending to 8× outer diameter (72mm for 325+116; 88mm for 335+125)

Reduced "skin effect" by 18% compared to solid conductors, ensuring efficient current distribution at 50–60Hz

Improved resistance to fatigue from thermal cycling and vibration, common in industrial environments

Material Properties: 1350-H19 aluminum alloy undergoes specialized annealing, achieving:

61% IACS conductivity for minimal power loss

174MPa tensile strength to withstand installation tensions

Natural oxide layer providing corrosion resistance in damp environments

These conductor designs ensure the cables can handle the current demands of modern facilities while remaining manageable during installation.

3. XLPE Insulation: Advanced Protection

The cross-linked polyethylene (XLPE) insulation is specially formulated for demanding environments:

Molecular Structure: Peroxide cross-linking creates a three-dimensional polymer network that:

Eliminates "cold flow" (insulation creep) at high temperatures

Increases dielectric strength to 24kV/mm, 35% higher than PVC

Reduces water absorption to <0.03% by weight, critical for damp locations

Temperature Performance: Continuous operation from -40°C to 90°C, with short-term overload capability up to 105°C. This range ensures reliability in:

Freezer facilities (-30°C)

Desert climates (45°C ambient)

Industrial areas with heat-generating equipment

Environmental Resistance:

UV stabilization (2.0% carbon black) retains 90% tensile strength after 15,000 hours of sunlight

Chemical Resistance to oils, solvents, and industrial cleaners

Resistance to fungi and bacterial growth in humid environments

Insulation Thickness: 1.5mm on phase conductors and 1.2mm on neutral conductors, exceeding IEC 60502 requirements to provide an extra margin of safety against:

Abrasion during installation

Mechanical damage in high-traffic areas

Rodent bites in commercial kitchens and warehouses

This insulation system ensures the cables can withstand three decades of harsh conditions with minimal degradation.

4. Electrical Performance: Reliable Power Delivery

The cables’ electrical specifications are optimized for 0.6/1kV low-voltage systems:

Voltage Rating: 0.6kV phase-to-ground, 1kV phase-to-phase, suitable for secondary distribution in:

Industrial plants

Commercial buildings

Infrastructure projects

Residential complexes

Voltage Drop:

325+116: <2.5% at full load over 50-meter runs

335+125: <2.0% at full load over 70-meter runs

This ensures stable operation of sensitive equipment like:

Computer servers

Variable frequency drives

Medical devices

Precision manufacturing tools

Short-Circuit Handling: Withstands 20kA for 1 second, providing ample time for protective devices to clear faults before conductor damage occurs.

Impedance:

325+116: 0.58Ω/km at 60Hz

335+125: 0.41Ω/km at 60Hz

These low impedance values minimize power loss and improve system efficiency.

These electrical properties make the cables suitable for both power distribution and motor supply applications.

5. Mechanical Properties: Durability and Flexibility

The cables’ mechanical characteristics ensure longevity in demanding installations:

Tensile Strength:

325+116: 1,800N breaking force

335+125: 2,200N breaking force

Allowing safe pulling tensions during installation (30% of breaking force).

Bend Radius:

Static (installation): 8× outer diameter

Dynamic (during operation): 12× outer diameter

Enabling installation in tight spaces like cable trays and conduit bends.

Crush Resistance: Withstands 4kN/m² pressure without conductor damage, ensuring survival under:

Heavy equipment in industrial settings

Stacked materials in warehouses

Foot traffic when installed in floor ducts

Impact Resistance: Survives 50J impacts (5kg weight dropped from 1m) at -30°C without insulation cracking, a critical feature for cold-storage facilities.

These mechanical properties ensure the cables can withstand the rigors of installation and operation in challenging environments.

6. Installation Efficiency: Designed for Productivity

The cables’ design prioritizes installer efficiency, reducing project timelines:

Handling Benefits:

Flexible stranding allows easy pulling through conduits and cable trays

Color-coded insulation (brown/black/grey phases, blue neutral) simplifies phase identification

Uniform outer diameter ensures consistent performance in cable glands

Termination Process:

XLPE insulation strips cleanly with standard tools

Compatible with compression and mechanical lugs for 25mm² and 35mm² conductors

Termination time reduced by 25% compared to PVC-Insulated Cables

Installation Methods: Suitable for:

Conduit (PVC, steel, HDPE)

Cable trays (ladder, solid bottom)

Direct burial (with appropriate protection)

Aerial installation (with messenger support)

Crew Requirements: A 2-person crew can install:

500 meters of 325+116 per day

400 meters of 335+125 per day

This represents 20% faster installation than equivalent Copper Cables.

These installation advantages translate to labor savings of approximately $120 per 100 meters compared to less flexible alternatives.

7. Standards Compliance: Global Recognition

The cables meet rigorous international standards:

IEC 60502-1: Specification for Power Cables with rated voltages up to 30kV

ASTM B230: Standard for aluminum Electrical Conductors

BS 6346: British standard for Power Cables for industrial applications

UL 44: Underwriters Laboratories standard for cross-linked polyethylene Insulated Cables

Compliance with these standards ensures the cables can be specified for projects worldwide, from European factories to Asian commercial centers.

8. Applications: Versatility Across Sectors

The cables excel in diverse applications requiring reliable low-voltage distribution:

Industrial Facilities:

Manufacturing plants (machine tools, conveyor systems)

Warehouses (forklifts, lighting, HVAC)

Food processing (washdown areas, refrigeration)

Commercial Buildings:

Shopping malls (HVAC, escalators, retail units)

Office complexes (IT infrastructure, lighting, elevators)

Hotels (guest rooms, kitchens, laundry facilities)

Infrastructure Projects:

Transportation hubs (airports, railway stations)

Sports stadiums (lighting, scoreboards, concessions)

Healthcare facilities (medical equipment, life support systems)

Specialized Environments:

Cold storage (freezers, refrigerated warehouses)

Data centers (server racks, cooling systems)

Agricultural facilities (irrigation pumps, climate control)

In each application, the cables deliver consistent performance with minimal maintenance requirements.

9. Cost Efficiency: Total Value Over Lifespan

The cables offer exceptional long-term value through:

Material Costs: 40% lower than equivalent Copper Cables, with comparable performance for low-voltage applications.

Installation Savings: 20% faster installation reduces labor costs, with a 500-meter project saving approximately $600.

Energy Efficiency: 61% IACS conductivity reduces line losses by 10% compared to lower-grade aluminum, saving:

325+116: $250–300 annually per 100 meters

335+125: $350–400 annually per 100 meters

Lifecycle Costs: 30-year service life minimizes replacement frequency, with maintenance limited to:

Visual inspections every 5 years

No periodic insulation treatments

These factors result in a total cost of ownership 35% lower than copper cables over 30 years.

10. Environmental and Safety Benefits

Beyond performance, the cables deliver significant environmental and safety advantages:

Sustainability:

Aluminum is 100% recyclable with 95% energy savings vs. primary production

30-year service life reduces waste from replacements

Lead-free insulation complies with RoHS directives

Safety Features:

Flame-retardant XLPE insulation self-extinguishes within 30 seconds

Low smoke emission during combustion, improving evacuation conditions

Reduced risk of electric shock compared to unInsulated Conductors

Occupational Health:

No toxic fumes during normal operation

Resistant to mold growth, improving indoor air quality

Easy to handle without specialized protective equipment

These benefits align with global initiatives for sustainable construction and safe working environments.

11. Maintenance and Longevity

The cables’ design ensures minimal lifecycle maintenance:

Service Life: 30 years under normal conditions, with 25-year expectancy in harsh environments.

Inspection Requirements:

Visual checks for damage during scheduled shutdowns

Thermal imaging surveys every 10 years to identify hot spots

No periodic cleaning or treatment needed

Repair Options:

Damaged sections can be spliced using XLPE-compatible connectors

Insulation repairs possible with heat-shrink sleeves

Repair costs 70% lower than full cable replacement

End-of-Life Management:

Aluminum conductors retain 85% of material value as scrap

Insulation can be separated for recycling

Complies with WEEE directives for responsible disposal

This low-maintenance profile is particularly valuable for facilities with limited maintenance budgets.

12. Conclusion

The Caai Caai-S Aluminum Cable series (325+116mm² and 335+125mm²) represents the optimal balance of performance, durability, and cost-effectiveness in low-voltage power distribution. By combining 1350-H19 aluminum conductors with XLPE insulation, these cables deliver reliable power in 0.6/1kV systems across diverse environments.

Their 7-strand design ensures flexibility for installation in challenging spaces, while their 30-year service life minimizes lifecycle costs. Compliance with global standards ensures they can be integrated into projects worldwide, from industrial plants to commercial complexes.

As the demand for efficient, sustainable power distribution grows, these cables stand ready to meet the challenges of modern electrical systems—proof that thoughtful engineering can create solutions that are both high-performing and economically viable for decades to come.