Polyurethane Stranded Conductor Power Cable, 2/3/4-Core Seawater and Und
Shanghai Rosheng Underwater Power Cable is specially developed for 2/3/4-core seawater applications, featuring VDE 0295 Class 6 ultra-fine stranded conductors and an imported polyether-based polyurethane (PUR) outer jacket. The cable offers excellent resistance to hydrolysis and microbial attack, and incorporates a Kevlar tensile reinforcement system rated above 500 kg, making it an ideal power solution for ROVs, AUVs, and underwater inspection equipment.
.Ultra-high flexibility with VDE 0295 Class 6 construction
.Imported polyether PUR jacket with outstanding seawater corrosion resistance
.Kevlar fiber braided tensile reinforcement for anti-torsion performance
.Customizable neutral-buoyancy or zero-buoyancy configurations
.Compliant with ISO and CE standards for global applications
Overview of Subsea Power Reliability
In the unforgiving environment of deep-sea exploration and offshore energy, a cable is more than a conductor; it is a critical lifeline. Shanghai Rousheng presents the Polyurethane Stranded Conductor Power Cable, a masterpiece of subsea engineering designed to withstand extreme hydrostatic pressure, chemical corrosion, and continuous mechanical stress. Engineered specifically for ROVs, AUVs, and underwater monitoring systems, this cable series leverages our decade-long expertise in high-flex technology to deliver uninterrupted power in the most challenging marine conditions.20
Why Polyether-PUR is the Standard for Deep-Sea Longevity
Traditional cable jackets like PVC or Polyester-PUR are prone to rapid degradation in saltwater due to hydrolysis. Our seawater-proof cables utilize a high-performance Polyether-based Polyurethane (PUR) jacket, which remains chemically inert and stable during permanent immersion.15
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Hydrolysis & Microbial Resistance: Our polyether formulation prevents the molecular chain breakdown caused by water exposure and biological attack, common in North Sea and tropical deployments.15
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Abrasion & Notch Resistance: The pressure-extruded PUR jacket provides a rugged barrier against seabed topographies and biological fouling, maintaining structural integrity even when dragged across sharp corals or rocky substrates.16
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Low-Temperature Ductility: Rated for operational flexibility down to -40°C, ensuring mission success in arctic waters where conventional materials turn brittle and crack.15
Advanced Structural Engineering
Every component within a Rousheng subsea power cable is optimized for dynamic underwater movement and tensile stability.25
Class 6 Ultra-Fine Stranding
We utilize DIN VDE 0295 Class 6 stranded copper conductors. This ultra-fine stranding minimizes internal friction during bending, allowing the cable to maintain a small minimum bend radius without risk of fatigue-induced conductor breakage.25
Kevlar Aramid Reinforcement
To counter the massive longitudinal stresses during ROV retrieval, we integrate high-modulus Kevlar (Aramid) fibers. This creates a high-strength tensile member capable of supporting up to 500kg of load without deforming the electrical cores, providing an essential safety margin for expensive subsea assets.29
Technical Data Matrix
| Specification | Technical Detail |
| Number of Cores |
2, 3, or 4 Cores (Standard); Custom counts available 46 |
| Conductor Material |
High-Flex Tinned or Bare Oxygen-Free Copper 25 |
| Conductor Category |
DIN EN 60228 / VDE 0295 Class 6 20 |
| Insulation Material |
Specialized TPE or Polypropylene (PP) 42 |
| Outer Jacket |
Pressure-Extruded Polyether Polyurethane (PUR) 20 |
| Rated Voltage (Uo/U) |
300/500V or 450/750V (Standard configuration) 8 |
| Test Voltage |
2500V – 3000V AC (Standard IEC requirement) 52 |
| Temperature Range |
-40°C to +90°C (Fixed) / -30°C to +80°C (Moving) 15 |
| Minimum Bend Radius |
5 x OD (Fixed) / 7.5 x OD (In-Motion) 26 |
| Tensile Capacity |
Integrated Kevlar Braid (Up to 1.5 Tons load capacity) 52 |
Strategic Marine Applications
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Observation-Class ROVs: Perfect for neutrally buoyant tethers where drag reduction is critical.1
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Subsea Lighting & Monitoring: Stable power delivery for high-intensity LED systems and imaging arrays.42
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Aquaculture Automation: Reliable connection for sensors and motorized cleaning systems in fish farms.1
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Offshore Wind Maintenance: Durable umbilical solution for tower inspections and seabed surveys.1
Subsea Connectivity FAQ
Q: Can this cable achieve zero buoyancy for ROV missions?
Yes. Through advanced foam extrusion technology, we can adjust the cable’s density (1.0 to 1.1 g/cm³) to achieve neutral or zero buoyancy in seawater. This reduces the motor load of the ROV and allows for more precise piloting.52
Q: How does the cable prevent water “wicking” in case of jacket damage?
We incorporate longitudinal water-blocking materials, including specialized fillers and non-woven wraps. This system blocks the internal passage of water along the conductor cores, preventing catastrophic damage to the connected equipment.22
Q: Is the PUR jacket compatible with resin potting or subsea connectors?
Absolutely. Our polyether-PUR is chemically optimized to bond securely with common marine potting compounds (like 3M Scotchcast) and resin-based subsea connectors. This ensures a watertight seal at the termination point.24
Q: What international standards does Shanghai Rousheng comply with?
Our manufacturing processes are ISO 9001 certified, and our subsea cables are designed in accordance with IEC 60092-350/360 and DIN VDE 0295 standards. All products for the European market carry the CE mark.3
