35kV high-voltage offshore cables sleeves are designed to withstand complex marine environments characterized by high salinity, humidity, strong currents, and frequent impacts. Its primary function is to protect the external structure of the cable against external damage—such as friction from seabed reefs, fishing trawler nets, anchor impacts, and seawater corrosion—thereby preventing cable damage and aging, ensuring the safe and stable transmission of high-voltage power, extending cable service life, and reducing maintenance costs.
Core Material Advantages: Polyurethane (PU)
The product is manufactured from high-quality polyurethane. By scientifically adjusting the ratio of hardness to toughness, this material is superior to traditional alternatives for offshore environments. Its core advantages include:
1. Seawater Corrosion Resistance: The dense molecular structure provides long-term resistance against erosion from seawater and marine organisms. It will not swell or crack over a 15–25 year lifespan, making it suitable for all marine conditions.
2. Abrasion and Impact Resistance: With high hardness and excellent toughness, it effectively resists friction from seabed rocks and silt, as well as mechanical damage during anchoring or cable laying.
3. Wide Temperature Adaptability: Operates stably between -40°C and 80°C. It remains flexible in cold temperatures and maintains its shape in high heat, adapting to diverse maritime climates.
4. Flexible Customization: Hardness, length, and thickness can be tailored based on the specific diameter of the 35kV cable and the installation environment.
5. Eco-friendly and Lightweight: Contains no hazardous substances, aligning with green offshore wind power standards. Its lightweight nature facilitates offshore construction and reduces laying costs.
Technical Characteristics
1. High-Voltage Optimization: Perfectly matched to the requirements of 35kV cables. The smooth inner wall ensures a snug fit without hindering heat dissipation, ensuring safe high-voltage transmission.
2. Easy Installation: Featuring a split-type design, the sleeves can be spliced together without heavy equipment. This allows for rapid installation on offshore platforms or cable-laying vessels, significantly improving construction efficiency.
3. High Stability: Enhanced with anti-aging and anti-UV components to resist intense sunlight. Its waterproof and moisture-proof properties prevent seawater and humidity from penetrating the cable core, reducing the frequency of maintenance.
4. Vibration Resistance: The material’s natural elasticity absorbs vibrations and shocks during cable laying and operation, providing critical protection for offshore wind power cables.
Application Scenarios
Specifically designed for 35kV offshore cables, this product is ideal for:
1. Offshore Wind Power Projects: Protecting 35kV wind farm cables from the turbine foundation to the seabed route. It is particularly suited for wear-prone areas like reef zones and intertidal zones, as well as foundation exits and cable bends.
2. Submarine Power Transmission: Providing full-route protection for 35kV offshore transmission lines and interconnection cables between islands, shielding them from complex seabed environments to ensure stable power delivery.
Summary
Polyurethane 35kV Offshore Cable Protection Sleeves are specialized protective components for 35kV high-voltage marine cables. Using polyurethane as the core material, they offer superior corrosion and abrasion resistance alongside easy installation and high-voltage compatibility. With stricter requirements than those for low-to-medium voltage sleeves, they serve as a reliable outer defense for offshore wind and submarine power projects, securing stable energy transmission and maximizing cable longevity.
