面向需大电流供电、高带宽光纤传输与低水下重量兼顾的浮力及水下应用设计。2×2.5mm²(约14AWG)绞合裸铜导体保障低阻低压降的远距离供电,2×1SMF单模光纤提供高速且免疫电磁干扰的光通信;PP绝缘介电性能优良、吸湿率极低、宽温域稳定。
| Model number | PDK81602-2*2.5+2*1SMF |
| Specification | 2*2.5+2*1SMF |
| Conductor material | Pure copper |
| Insulation material | PP |
| Sheath material | Thermoplastic Polyurethane (TPU)+Form TPU |
| Sheath outer diameter (mm) | 17.5±0.5mm |
| Sheath color | yellow |
| Temperature range | -40-105℃ |
| Water pressure resistance | 10MPA |
| Tensile Strength | 100KG |
面向需大电流供电、高带宽光纤传输与低水下重量兼顾的浮力及水下应用设计。2×2.5mm²(约14AWG)绞合裸铜导体保障低阻低压降的远距离供电,2×1SMF单模光纤提供高速且免疫电磁干扰的光通信;PP绝缘介电性能优良、吸湿率极低、宽温域稳定。内层TPU护套提供机械防护与水密密封,外层发泡TPU护套显著降低密度,实现近中性至正浮力;高强度合成纱线加强至100kg破断拉力,阻水膨胀带与耐压填充物防止径向及纵向进水。适于ROV浮力系缆、海底仪器节点、海洋观测锚系等。
This PDK81602 dual‑sheath buoyancy cable is specifically engineered for underwater and floating applications that require a combination of high‑current power delivery, high‑bandwidth optical data transmission, and low underwater weight – all with moderate pull resistance. It integrates two 2.5 mm² (approx. AWG 14) stranded bare copper power conductors for efficient energy transmission and two single‑mode optical fibers (2×1SMF) for high‑speed, EMI‑immune communication. All copper conductors are bare copper to minimize resistance and voltage drop over extended cable runs. PP (Polypropylene) provides primary insulation with excellent dielectric properties, very low moisture absorption, and stable performance across a wide temperature range. The cable features a dual‑sheath buoyancy system: an inner TPU (Thermoplastic Polyurethane) sheath offers robust mechanical protection and watertight sealing, while an outer foamed TPU sheath significantly reduces overall density to achieve near‑neutral or positive buoyancy in seawater. The cable is reinforced with high‑strength synthetic yarns to deliver a 100 kg breaking strength (approx. 980 N), enabling safe deployment and recovery from surface vessels or floating platforms without risk of tensile failure. The construction incorporates water‑swellable tapes and pressure‑resistant fillers to prevent radial and longitudinal water ingress. This cable is ideal for ROV floating tethers, subsea instrument nodes, oceanographic moorings, and marine renewable energy systems – where high power, fiber‑optic telemetry, lightweight flotation, and moderate pull capacity are essential.
Model number
PDK81602-2*2.5+2*1SMF
Specification
2*2.5+2*1SMF
Conductor material
Pure copper
Insulation material
PP
Sheath material
Thermoplastic Polyurethane (TPU)+Form TPU
Sheath outer diameter (mm)
17.5±0.5mm
Sheath color
yellow
Temperature range
Water pressure resistance
10MPA
Tensile Strength
100KG
Key Features – Bare Copper, PP Insulation, Dual Sheath (TPU + Foamed TPU), 100KG Tensile
100 kg tensile strength – integrated aramid strength members allow the cable to withstand pulling forces up to 100 kg, ensuring safe handling and installation without overloading the fiber or conductors.
Bare copper conductors (2×2.5 mm²) – two stranded bare copper cores for low‑resistance power transmission (up to 20‑25 A), suitable for supplying cameras, lights, thrusters, and sensor payloads.
Dual single‑mode fibers (2×1SMF) – two optical fibers (9/125 µm) for ultra‑high‑bandwidth data links, ideal for real‑time HD video, sonar, telemetry, and control signals – completely immune to electromagnetic interference.
PP insulation – rated -40°C to +105°C; low dielectric constant, negligible moisture absorption, and resistance to seawater, acids, and many chemicals – ensuring stable insulation over long‑term immersion.
TPU inner sheath – solid polyurethane layer provides excellent abrasion, cut, and tear resistance, protecting the core during handling and deployment.
Foamed TPU outer sheath – micro‑cellular foamed structure lowers cable density (<1.0 g/cm³) for buoyancy, while retaining the flexibility, hydrolysis, and UV resistance of solid TPU.
Watertight construction – multi‑layer water‑blocking tapes and pressure‑extruded core filler prevent water migration along the cable, even under hydrostatic pressure.
Ideal For
ROV and AUV floating tethers that need both high‑power (2.5 mm²) and dual fiber‑optic channels with neutral buoyancy
Subsea observation platforms and oceanographic drifting buoys requiring lightweight, low‑drag cabling
Marine renewable energy monitoring systems (wave, tidal) with submerged power distribution and fiber backhaul
Underwater camera and lighting arrays with separate power feeds and real‑time video over fiber
Military expendable surveillance cables and acoustic arrays requiring positive buoyancy and moderate tensile capacity
Any subsea application demanding 2 power cores + 2 fibers + buoyancy + 100kg pull strength
Conclusion
This PDK81602 dual‑sheath buoyancy cable delivers a well‑balanced solution for underwater systems that need significant power, high‑speed fiber optic data, and controlled flotation. The combination of bare copper power conductors, PP insulation, two single‑mode fibers, a TPU inner sheath, and a foamed TPU outer jacket – reinforced to 100 kg tensile – ensures reliable, lightweight, and durable performance in demanding marine environments. It is an ideal choice for advanced ROV tethers, sensor networks, and oceanographic research.
