XWA Submarine Cable – IEC 60502-4 & IEEE 1580 Certified, high-performance subsea power cables designed for offshore wind farms, coastal power transmission, island interconnection, and undersea communication systems.
As a leading manufacturer of submarine MV/HV power cables, XWA Power integrates advanced XLPE/TR-XLPE insulation, anti-corrosion armoring, and waterproof shielding technology to ensure stable operation in harsh marine environments (salt spray, deep-sea pressure, extreme temperatures), with custom solutions for 1kV-500kV voltage ratings, reliable power delivery across long undersea distances, and compliance with global marine environmental protection standards.
Подводный кабель среднего напряжения (Среднее напряжение)
MV submarine power/optical composite cables are designed for medium-voltage power distribution in offshore and nearshore environments. With integrated optical fibers for monitoring and communication, they are ideal for offshore wind farms, island connections, and coastal infrastructure.
HV Submarine Power Cable (Высокое напряжение)
HVDC submarine power/optical composite cables are built for long-distance, высокопроизводительная трансмиссия. As a high voltage submarine cable, they combine efficient power delivery with optical fibers for communication and system monitoring.
Подводный кабель: IEC Common Models & Структуры
MV/HV/EHV submarine cables for marine power transmission; Core Standards: МЭК 60502-4 (МВ), МЭК 60840 (HV/EHV), МЭК 61089 (armoring), МЭК 60228 (conductors). All models integrate water-blocking, anti-hydrostatic pressure, anti-corrosion, anti-abrasion designs, with marine-grade materials and multi-layer armoring to adapt to seabed salt spray, tidal scouring, and mechanical impact.
ВН (52kV＜Um≤300kV) | МЭК 60840
| Model Code | Full Structural Description | Rated Voltage (U0/U) ) | Основная структура (Layer-by-Layer) |
|---|---|---|---|
| N2XS2Y33 | Copper conductor, XLPE insulation, copper tape screen, double steel wire armoring, marine-grade HDPE outer sheath | 6/10кВ, 12/20кВ, 18/30кВ, 24/42кВ，64/110кВ, 127/220кВ, 190/330кВ | Сорт 2 compacted copper conductor (water-blocked) → semi-conductive conductor screen → marine XLPE insulation → semi-conductive insulation screen → copper tape lapped screen → inner PE sheath → double galvanized steel wire armoring → marine-grade HDPE outer sheath |
| NA2XS2Y33 | Aluminium conductor, XLPE insulation, copper tape screen, double steel wire armoring, marine-grade HDPE outer sheath | 6/10кВ, 12/20кВ, 18/30кВ， 64/110кВ, 127/220кВ | Сорт 2 compacted aluminium conductor (water-blocked) → semi-conductive conductor screen → marine XLPE insulation → semi-conductive insulation screen → copper tape lapped screen → inner PE sheath → double galvanized steel wire armoring → marine-grade HDPE outer sheath |
| N2XSH33 | Copper conductor, XLPE insulation, copper tape screen, double steel wire armoring, marine LSZH outer sheath | 6/10кВ, 12/20кВ | Сорт 2 compacted copper conductor (water-blocked) → semi-conductive conductor screen → marine XLPE insulation → semi-conductive insulation screen → copper tape lapped screen → inner PE sheath → double galvanized steel wire armoring → marine flame-retardant LSZH outer sheath |
| N2XSEY33 | Copper conductor, EPR insulation, copper tape screen, double steel wire armoring, marine-grade HDPE outer sheath | 6/10кВ, 12/20кВ， 64/110кВ (shallow water ≤100m) | Сорт 2 compacted copper conductor (water-blocked) → semi-conductive conductor screen → marine EPR insulation → semi-conductive insulation screen → copper tape lapped screen → inner PE sheath → double galvanized steel wire armoring → marine-grade HDPE outer sheath |
Why Choose XWA for Submarine Power Projects
When undertaking multi-million dollar offshore installations, cable reliability and manufacturing scale are non-negotiable. XWA Power combines state-of-the-art manufacturing infrastructure with uncompromising marine-grade testing to deliver risk-free power transmission for your most demanding subsea projects.
Massive Continuous Manufacturing Capacity
Submarine cable integrity relies on continuous extrusion. XWA Power has Vertical Continuous Vulcanization (VCV) extrusion lines and relies on massive, heavy-duty factory carousels designed specifically for extreme-length spooling.
- Production Output: Up to 300km per month of continuous, joint-free submarine cable.
- The XWA Advantage: This massive continuous manufacturing capacity allows us to eliminate unnecessary factory splicing, significantly reducing subsea failure risks while ensuring rapid lead times for large-scale offshore wind and island interconnection projects.
Global Marine Certifications & Rigorous Laboratory Testing
Beyond standard IEC and IEEE compliance, XWA Power’s subsea products are validated by the world’s most trusted maritime classification societies and third-party testing bodies. We do not just manufacture, we verify. Every meter of XWA HVAC/HVDC submarine cable undergoes exhaustive Factory Acceptance Testing (FAT) before it is loaded onto a laying vessel. Our in-house testing capabilities include:
- Faraday Cage Partial Discharge (ПД) Testing: Ensuring absolute zero insulation voids or impurities in the XLPE/EPR layers.
- High-Voltage AC/DC Withstand Testing: Exceeding maximum operational voltage limits to guarantee long-term reliability.
- Hydrostatic Pressure & Water Penetration Testing: Simulating deep-sea environmental pressures.
- Mechanical Tensile & Bending Cycle Testing: Ensuring the multi-layer armoring can withstand the extreme mechanical stress of installation and seabed movement.
Proven Offshore Track Record of Submarine Cables
XWA Power cables currently secure energy transmission for critical marine infrastructure worldwide. Our teams are experienced in delivering complex subsea solutions on schedule.
- Offshore Wind Grid Connection: Supplied approximately 30km of 220 kV high‑voltage submarine cable for an offshore wind farm in Spain, ensuring reliable, high-capacity power transfer from the offshore substation to the mainland grid.
- Offshore Oil & Gas: Engineered customized, anti-corrosion subsea cables for a deepwater platform in the Gulf of Mexico, ensuring uninterrupted power supply in harsh, highly corrosive saltwater environments.
Application Categories of Submarine Cables
Offshore Renewable Energy Submarine Cables
XWA Power offshore renewable energy submarine cables are engineered for offshore wind farms, floating photovoltaic power stations and tidal energy projects, complying with IEC 60502-4/IEC 60840 standards with marine-grade HDPE sheaths and double steel wire armoring (33 code). Designed for farshore/nearshore grid connection, these submarine cables feature anti-UV, anti-salt spray and water-blocking structures, supporting 6/10kV to 290/500kV MV/HV/EHV voltage ratings, and realize stable power transmission for renewable energy projects from sea to onshore grids, with optional integrated fiber optic units for real-time operation monitoring. Ideal for offshore wind farm clusters, coastal renewable energy bases and cross-sea clean energy transmission links.
Coastal & Interconnection Submarine Cables
As the core solution for coastal grid interconnection, island power supply, intercity cross-sea power transmission and nearshore industrial park undersea power links, XWA Power coastal & interconnection submarine cables adopt compacted copper/aluminium water-blocked conductors and marine XLPE/TR-XLPE insulation, adapting to shallow-sea tidal scouring and seabed mechanical impact. Covering 0.6/1kV to 127/220kV voltage ranges, these submarine cables are available in single/double steel wire armoring configurations, suitable for mud/sandy seabed laying in nearshore (≤5km) and medium-distance (5-50км) cross-sea scenarios, and are the mainstream choice for municipal coastal power grid construction, island electrification and cross-bay power network linkage projects worldwide.
Offshore Industrial & Special Marine Submarine Cables
XWA Power offshore industrial & special marine submarine cables are customized for offshore oil/gas platforms, subsea mining equipment, marine engineering facilities and coastal port power supply, with optional flame-retardant marine LSZH sheaths, anti-corrosion asphalt-PP rope protection and EPR insulation for extreme marine conditions. Supporting low/medium/high voltage ratings (0.6/1kV to 64/110kV), these submarine cables feature high tensile, anti-hydrostatic pressure and anti-marine biological corrosion performance, and are applicable to deep-sea industrial equipment power supply, subsea control system signal transmission and offshore industrial park undersea power distribution, meeting the special technical requirements of offshore industrial projects for safety, reliability and long-term operation in harsh marine environments.
Часто задаваемые вопросы - XWA Power Submarine Cables
What standards and voltage ratings do XWA Power Submarine Cables comply with?
XWA Power Submarine Cables fully adhere to МЭК 60502-4 (МВ) и МЭК 60840 (HV/EHV)—the global core standards for marine power cables, with optional compliance with IEEE 1580 for North American projects. Our cables cover a wide voltage range from 0.6/1кВ (ЛВ) к 290/500кВ (сверхвысокое напряжение), including mainstream MV grades (6/10кВ, 12/20кВ, 18/30кВ) and HV/EHV grades (64/110кВ, 127/220кВ, 190/330кВ). All products pass IEC 60811 seawater immersion, salt spray and anti-abrasion type tests, ensuring reliable performance in global marine environments.
What core structural features make XWA Power Submarine Cables suitable for harsh marine conditions?
XWA Power Submarine Cables are engineered with marine-specific protective structures: water-blocked Class 2 compacted copper conductors, marine-grade XLPE/TR-XLPE insulation, and standard double galvanized steel wire armoring (33 code) for tensile/anti-impact performance. The outermost sheath uses ЧП 100 marine-grade HDPE (low water absorption ≤0.01%) to resist salt spray, marine biological corrosion and tidal scouring. HV/EHV models add semi-conductive shielding for electric field uniformity, and all cables feature full-length waterproof sealing to prevent seawater ingress—adapting to seabed terrain such as muddy, sandy and shallow rocky seabeds.
Why is HVDC preferred for long-distance submarine cables?
For submarine power transmission exceeding 50 к 80 kilometers, HVDC is the industry standard. Unlike HVAC (Alternating Current) кабели, which suffer from severe capacitive charging currents over long distances—ultimately consuming the cable’s current-carrying capacity—HVDC cables do not have this limitation. They offer significantly lower line losses and require fewer cables for the same power rating, making them highly efficient and cost-effective for far-shore wind farm integrations and cross-border subsea grid interconnections.
What application scenarios are XWA Power Submarine Cables designed for?
XWA Power Submarine Cables are customized for three core marine power transmission scenarios: offshore renewable energy projects (offshore wind farms, floating PV, tidal energy grid connection), coastal & interconnection transmission (island power supply, cross-sea grid linkage, nearshore municipal power distribution), и offshore industrial applications (offshore oil/gas platforms, subsea equipment, coastal port power supply). We also offer fiber optic integrated models (FO) for synchronous power transmission and real-time monitoring, suitable for farshore (＞5km) and deep-sea (≤1000m) laying requirements.
Can XWA Power provide customized Submarine Cable solutions for specific marine projects?
Да, XWA Power offers one-stop customized submarine cable solutions tailored to your project’s unique requirements. Customization options include: marine LSZH flame-retardant sheaths for fire-risk areas (offshore platforms, subsea tunnels), anti-corrosion asphalt-PP rope coating for traditional retrofitting projects, non-magnetic armoring for substation near-sea laying, and integrated fiber optic (FO) units for intelligent monitoring. We also customize conductor cross-sections, armoring types and sheath materials based on project water depth, seabed terrain, transmission distance and grid frequency (50/60Hz) to match global regional marine project needs.
What quality and after-sales support does XWA Power provide for Submarine Cables?
XWA Power is a professional manufacturer with full-process production and testing capabilities for submarine cables. All products are 100% tested before delivery, including partial discharge, гидростатическое давление, tensile and insulation resistance tests. We provide complete technical documentation (installation guides, material certificates, test reports) and on-site technical support for cable laying and commissioning. Our submarine cables have a 30-year design service life (compliant with IEC marine cable life standards), and we offer long-term after-sales maintenance and spare parts supply to ensure the stable operation of your marine power transmission projects worldwide.
Do you supply specialized submarine cable accessories alongside the cables?
Да, XWA Power provides comprehensive, end-to-end subsea accessory solutions. We understand that the integrity of a subsea line is only as strong as its connections. To support your offshore installation, we design, manufacture, and supply compatible accessories including factory joints, high-reliability subsea repair joints, offshore platform hang-off arrangements, and customized submarine terminations (GIS or outdoor) tailored to your specific project parameters.