500kV Cable
- RS 500kV cable represents the highest level of extra high voltage (EHV) cable engineering, designed for projects where maximum transmission capacity, extreme electrical stress control, and long-distance efficiency are essential. At this voltage level, RS leverages advanced EHV production lines and precision-controlled XLPE insulation processes to ensure insulation purity and uniform electric field distribution. Combined with comprehensive type testing and full-process quality control, this enables us to deliver high-reliability 500kV cable systems capable of stable, long-term operation under extreme electrical and thermal conditions.
Product Introduction
500kV Cable Specifications & Construction
– Conductor: High-purity aluminium or copper conductors, typically from 1600 mm² up to 2500 mm²+, engineered for ultra-high current transmission.
– Insulation System: Advanced XLPE insulation with precise electric field grading, designed to withstand extreme voltage stress and minimize partial discharge.
– Metallic Sheath Design: Options include lead sheath or welded aluminium sheath, optimized for fault current capacity, moisture barrier performance, and grounding configuration.
– Outer Sheath: Heavy-duty PE sheath providing protection against mechanical impact, environmental exposure, and long-term aging.
– Voltage Rating: Uo/U 290/500 kV, Um 550 kV.
– Operating Capacitance: Ranging from 0.18 µF/km to 0.21 µF/km depending on conductor size.
– Charging Current: Ranging from 16.5 A/km to 18.9 A/km.
RS 500kV Cable Size Datasheet
| Conductor Type | Cross-Section (mm²) | Outer Diameter (mm) | Net Weight with Pb Sheath (kg/m) |
|---|---|---|---|
| Aluminium | 1600 | 131 | 32.1 |
| Copper | 1600 | 133 | 40.5 |
| Aluminium | 2000 | 142 | 34.1 |
| Copper | 2000 | 142 | 45.2 |
| Aluminium | 2500 | 147 | 36.2 |
| Copper | 2500 | 147 | 51.2 |
Why Partner with RS for 500kV Ultra-Critical Projects?
500kV transmission projects demand absolute reliability, precise engineering, and a partner capable of delivering at the highest voltage level. RS power cable manufacturer combines advanced manufacturing capability with real-world project experience to support mission-critical infrastructure.
- Precision Electric Field Control
Our advanced XLPE insulation system is manufactured under strict process control to ensure uniform electric field distribution, reducing partial discharge risk and extending service life. - Engineered for Maximum Power Throughput
Designed to carry ultra-high current loads over long distances, optimizing efficiency while minimizing transmission losses in backbone grid applications. - Proven Manufacturing & Quality Assurance
With 15+ years of high-voltage cable experience, RS implements full-process quality control—from raw materials to final testing—ensuring consistent, reliable performance at 500kV level. - Capability for Complex EHV Installations
Our cables are engineered for demanding environments, including long-distance underground routes, utility tunnels, and high-load transmission corridors, with full technical support. - Complete System Solution Provider
Beyond the cable itself, we support joints, terminations, bonding systems, and project-level technical guidance, ensuring seamless system integration. - Competitive Factory-Direct Advantage
As a direct manufacturer, RS offers cost-effective solutions for large-scale EHV projects, helping you stay competitive without compromising on quality or compliance.
Typical Applications of 500kV Cable
500kV EHV electrical cables are deployed in national-level transmission systems where extremely high power demand, long-distance delivery, and grid stability are critical. These projects typically involve complex engineering, strict reliability requirements, and long-term infrastructure planning.
- National Grid Backbone Transmission
500kV underground cables form the core transmission arteries of power systems, carrying bulk electricity across regions with maximum efficiency and minimal losses. - Cross-Regional & Cross-Border Interconnections
Enabling high-capacity energy exchange between regions or countries, 500kV systems support grid balancing, energy trading, and enhanced supply security across interconnected networks. - Integration of Mega Power Generation Facilities
Essential for exporting power from nuclear plants, large hydro stations, and ultra-large thermal power plants, where continuous high output requires stable and high-capacity transmission channels. - Ultra-Long-Distance Underground EHV Links
Applied in projects where overhead lines are restricted, such as metropolitan areas, environmentally protected zones, or river/sea crossings, requiring advanced thermal design and installation techniques. - Large-Scale Renewable Energy Transmission
Supporting the delivery of massive renewable energy from offshore wind farms, desert solar bases, and remote generation sites to major load centers over long distances.
Installation & Support
- Bending Radius: Typically ≥ 3.5m depending on design.
- Thermal Design: Critical for maintaining current capacity over long routes.
- Installation Complexity: Requires specialized engineering and equipment.
- System Integration: Includes EHV joints, terminations, bonding systems, and monitoring.
Our team of technical experts is available to answer your questions, provide custom solutions, and support your project from planning to installation.
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