IEC Certified 15kV 3×300mm² Copper Conductor Cable | Heavy Load Anti-Corrosion Armored Cable for Data Center & Energy Station Trunk Circuits

is a heavy-duty three-core medium-voltage cable specifically designed for 8.7/15kV AC 50Hz three-phase power systems. Unlike traditional small- and medium-section medium-voltage cables, its 300mm² ultra-large cross-section conductor is designed for ultra-high loads, long-distance transmission, and core trunk loops.

Manufactured strictly according to IEC 60502-2, IEC 60228, and GB/T 12706 series standards, this product features a reinforced composite structure with high-strength insulation, double shielding, and galvanized steel tape armor. It boasts superior electrical performance, mechanical rigidity, and environmental adaptability, making it an ideal choice for core power links in regional power hubs, large-scale industrial clusters, new energy bases, and landmark infrastructure projects.

• Compacted oxygen-free copper conductor
• Inner semi-conductive shielding layer
• Reinforced medium-voltage cross-linked polyethylene (XLPE) insulation layer
• Outer semi-conductive shielding layer
• PVC padding layer
• Double-layer hot-dip galvanized steel strip armor
• Reinforced modified PVC outer sheath

3×300mm² Compacted Copper Conductor: Utilizes Class 2 stranded high-purity oxygen-free copper, employing multi-strand tight compaction technology to reduce internal gaps and conductor resistance, achieving stable transmission of ultra-high current and effectively suppressing heat generation under full load.

Double-layer Integrated Semi-conductive Shielding Layer: The co-extruded shielding layer eliminates air gaps between the conductor and insulation layer, uniformly dispersing the high electric field under 15kV operating voltage, fundamentally suppressing partial discharge.

Thickened Reinforced Cross-linked Polyethylene (XLPE) Insulation Layer: Employs a special formula tailored for 15kV high electric field environments, possessing higher dielectric strength and anti-aging properties than standard insulation materials, suitable for long-term continuous heavy-load operation.

Double-layer galvanized steel strip armor: Both armor thickness and winding density have been improved, significantly enhancing compressive strength, impact resistance, and rodent control, making it perfectly suitable for harsh construction and underground environments.

Reinforced underlayment and outer sheath: The thickened protective layer structure provides excellent waterproofing, salt spray resistance, and chemical corrosion resistance, forming a completely sealed protective system suitable for long-term underground installation.

Focusing on its large cross-sectional area, high voltage, and heavy-load characteristics, highlighting its unique advantages over conventional medium-voltage cables:

1. Ultra-high Current Carrying Capacity and Low Transmission Loss

   The 300mm² ultra-large copper conductor has extremely low DC resistance and excellent heat dissipation performance, enabling it to stably carry large currents for extended periods, fully meeting the power demands of concentrated heavy loads and major equipment clusters in the region. Low line loss reduces power attenuation during long-distance transmission, reducing the overall energy consumption of the power system and creating long-term economic benefits for project operators.

2. Excellent Dielectric Properties and Ultra-low Partial Discharge

   Reinforced cross-linked polyethylene (XLPE) insulation perfectly matches the high electric field of the 15kV system. Combined with double-layer semi-conductive shielding, a uniform electric field distribution is achieved. Even under load fluctuations, impact loads, and long-term full-load operation, partial discharge remains at an extremely low level, avoiding insulation degradation, creepage, and breakdown risks. This ensures the electrical safety and operational stability of the core trunk line throughout its entire operating cycle.

3. Enhanced Mechanical Protection and Strong Damage Resistance

   The optimized double-layer galvanized steel strip armor structure improves overall rigidity. It can withstand ground settlement, heavy vehicle traffic, accidental digging, and external impacts, making it suitable for various scenarios such as direct burial, cable trench, and roadside laying. It is particularly suitable for densely populated construction areas and field operations, effectively reducing cable damage rates and daily maintenance workload.

4. Excellent Thermal Stability and Long-Term Aging Resistance

   XLPE material maintains stable physical and electrical properties even after continuous operation at 90°C, without softening, deforming, or cracking. The reinforced outer sheath inhibits material aging caused by temperature changes, sunlight exposure, and weathering. Whether fully buried underground or partially exposed, the cable maintains stable performance for decades.

5. Comprehensive Environmental Adaptability

   The multi-layered enclosed structure provides superior waterproof and moisture-proof performance, effectively preventing groundwater and humid air from penetrating the cable core. The special sheath formula resists saline-alkali corrosion in coastal areas, chemical vapor corrosion in industrial areas, and corrosion from complex soils in mountainous regions. It operates reliably even in a variety of harsh geographical and industrial environments.

6. Diverse Safety Customizations to Meet High Standards

   Standard products possess inherent flame-retardant capabilities, effectively preventing the spread of flames. Customized fire-resistant versions can maintain normal power supply to critical emergency loads in the event of a fire. Low-smoke halogen-free versions do not produce toxic gases when burning, with extremely low smoke levels, meeting stringent fire safety regulations for enclosed spaces, important public buildings, and lifeline projects.

7. Universal Compatibility and Simplified Construction

   All dimensions and structural parameters conform to international standards, ensuring full compatibility with mainstream 15kV cable terminals, connectors, fittings, and fixing accessories worldwide, eliminating the need for special custom parts. Optimized flexibility balances rigidity and bending performance, adapting to complex wiring such as large-radius curves and multi-bend cable trays, accelerating project construction progress.
    

This product is positioned as a core trunk cable for 15kV high-capacity power systems, primarily used in critical projects with high power demands, high reliability requirements, and complex operating environments:

1. Urban Core Power Grid and Main Substation Interconnection

   Used for outgoing trunk lines of urban 15kV main substations, inter-substation connection lines, urban central power grid renovation, and large-capacity power distribution in newly built urban areas. Its high current capacity and excellent underground burial performance make it a core choice for high-load urban power grids.

2. Large-Scale Industrial Clusters and Heavy Industry Bases

   Serving as the main power supply line for comprehensive industrial parks, steel smelting bases, large cement plants, and complete machinery manufacturing groups, this line supplies power to multiple high-power motors, frequency converters, and production lines, adapting to long-term heavy-load, vibration, and dust pollution environments in workshops.

3. Large Data Centers and Critical Server Rooms

   Deployed in cloud computing data centers and hub server rooms, the 15kV main power supply line meets the requirements of digital infrastructure for ultra-high reliability, continuous power supply, and fire safety, ensuring the stable operation of server clusters and supporting equipment.

4. Power Plants and New Energy Power Generation Bases

   Used as the main circuit outgoing lines in thermal power plants, hydropower stations, large wind farms, and centralized photovoltaic power stations, this line undertakes long-distance power collection and transmission tasks for new energy systems, adapting to outdoor open-air and on-site laying environments.

5. Coastal ports, major transportation hubs, and landmark infrastructure

   Equipped with a 15kV power distribution system, suitable for container ports, integrated transportation hubs, Changshan Tunnel, and ultra-large municipal complexes. Resistant to coastal salt spray, high humidity, and external mechanical corrosion, meeting the stringent quality standards for key national infrastructure projects.

   

1. Laying Methods and Mechanical Protection Rules

   Preferred laying methods: direct burial, cable trenches, cable corridors, and buried pipes. Long-distance overhead laying is not recommended. Sections crossing roads, railways, and building foundations should be protected with thick steel pipes. Use dedicated heavy-duty cable clamps to prevent sheath wear caused by the cable's own weight.

2. System and Load Matching Verification

   Confirm the rated voltage of the power system is 8.7/15kV before design. Calculate the total load current based on the sum of the rated power of the connected equipment, and reserve sufficient margin for impact loads and peak loads. Long-term overload operation is strictly prohibited to prevent accelerated insulation aging and potential faults.

3. On-site Construction Operation Specifications

   When pulling and laying cables, the specified minimum bending radius should be followed; excessive bending will damage the shielding layer and insulation structure. Avoid friction with sharp metal parts. For direct burial construction, graded fine sand should be laid on the top and bottom of the cable, and protective bricks should be laid according to specifications. To prevent sheath embrittlement, do not construct when the ambient temperature is below 0°C.

4. Connector Handling and Environmental Protection

   In coastal saline-alkali areas, chemical industrial zones, and high-humidity areas, use specialized waterproof and corrosion-resistant 15kV cable accessories, and fully seal all joints. All connection points are located in well-ventilated and easily accessible locations for subsequent maintenance.

5. Pre-commissioning Testing and Daily Operation and Maintenance

   Before energizing, perform power frequency withstand voltage tests and partial discharge detection to confirm insulation integrity. Establish dedicated inspection routes for long-distance trunk lines, and conduct regular insulation resistance tests and visual inspections to promptly eliminate potential hazards.

For B2B bidding, bulk purchasing, and export trade, the focus is on certification, quality consistency, and documentation completeness:

1. Multi-Standard Global Compliance

   Products fully comply with international and domestic standards such as IEC 60502-2, IEC 60228, and GB/T 12706, and possess mainstream certifications such as CE and ISO. We are qualified to participate in bidding and supply for medium-voltage engineering projects worldwide.

2. Full-Process Traceable Quality Management

   Incoming Material Inspection: High-purity copper rods, medium-voltage cross-linked polyethylene granules, galvanized steel strips, and sheath raw materials undergo rigorous sampling inspection before warehousing.

   Online Real-Time Monitoring: Automated production lines continuously monitor insulation thickness, shielding uniformity, and cable outer diameter to ensure dimensional consistency.

   Comprehensive Finished Product Inspection: 100% sampling testing is conducted on conductor DC resistance, withstand voltage, partial discharge, mechanical properties, and thermal aging. All non-conforming products are rejected.

3. Complete Supporting Documentation

   A complete set of official documents is provided, including factory inspection reports, qualification certificates, and detailed test reports. All documents support project filing, bid review, on-site acceptance, and export customs clearance.

4. Stable Batch Consistency

   Standardized production processes and mature technologies are employed. The performance and parameters of different batches of products are highly consistent, enabling them to adapt to phased construction, multi-batch delivery, and long-term framework cooperation in large-scale projects.

1. Case 1: Regional Main Substation Interconnection Project

   A provincial power grid underwent a core substation upgrade and expansion, procuring 18,000 meters of YJV22 8.7/15kV 3×300mm² cable for interconnection between the main substation and the city's main power line. All cables were laid using municipal integrated pipe corridors and direct burial methods. After 8 years of operation, the line operated stably, with no partial discharge anomalies or mechanical damage, successfully ensuring power supply to the entire central urban area and passing multiple power grid acceptance tests.

2. Case 2: Main Power Supply Project for a Super-Large Steel Plant

   A national first-class steel base selected this cable as the main 15kV power supply line for the entire plant, connecting the central distribution room with large equipment such as smelting furnaces and rolling mills. The plant area experiences significant vibration, high dust levels, and slightly corrosive gases. This cable, with its excellent vibration resistance, corrosion resistance, and heavy load resistance, can operate 24/7 year-round with an extremely low failure rate. The client has signed a long-term strategic procurement agreement for subsequent plant expansion.
   

1. High-Quality Raw Materials and Reliable Overall Quality

   We use top-grade oxygen-free copper and reinforced XLPE insulation materials specifically designed for 15kV high-voltage conditions. A comprehensive quality control system ensures product stability. High-quality products reduce the risk of line faults and subsequent maintenance costs, providing a solid guarantee for the safe operation of key projects.

2. Extensive Customization Services and One-Stop Solutions

   Based on standard products, we support customized production including flame retardant rating, fire resistance rating, low-smoke halogen-free, termite-proof function, sheath color, and fixed cutting length. Simultaneously, we provide matching 15kV cable terminals, connectors, and all accessories, enabling one-stop procurement and simplifying project coordination.

3. Professional Technical Team and Pre-sales Customized Services

   Our experienced medium-voltage electrical engineers provide free professional services, including load calculation, cable type selection, laying scheme optimization, and accessory matching. We can compile specific technical data and certification documents required for project bidding, helping customers optimize design schemes and save technical research time.

4. Ample Inventory and Flexible Global Logistics

   We can mix shipments with other cable products to improve container utilization and control cross-border logistics costs. For long-term clients, we offer framework supply services to ensure stable delivery.

5. Complete Export Documentation and Smooth Customs Clearance

   We are familiar with international trade rules and customs requirements in various regions. We can provide a complete set of certification documents, test reports, commercial invoices, and packing lists required for export, ensuring smooth customs clearance and on-time delivery worldwide.

6. Professional After-Sales Service and Remote Technical Support

   Each order comes with detailed English installation guides and operating documents. For large-scale, high-profile projects, we provide free remote technical guidance during construction and cabling. Our service team responds quickly to technical and product inquiries to ensure smooth project implementation.