Feichun PROTOLON (ST) .../3E Medium Voltage Flexible Cables for use in Water with Copper Core Shield
How PROTOLON (ST) .../3E Medium Voltage Flexible Cables with Copper Core Shield Revolutionize Underwater Power Supply in Challenging Environments
Application | Power supply cable for use in water (e.g., dredgers, floating docks, pumps). Suitable for high mechanical stresses, sewage, salt water, brackish water up to 500 m depth. Screened design for dredging equipment per VDE 0168. |
Global Data | |
Brand | Feichun PROTOLON(ST) |
Type Designation | NTSCGECEWOEU.../3E |
Standard | DIN VDE 0250-813 |
Certifications/Approvals | MSHA P-189-4, Fire Certificate of Russian Federation, GOST K, GOST B |
Notes on Installation | Suitable for self-assembly or termination at manufacturer's factory workshop. |
Design Features | |
Conductor | Electrolytic copper, tinned, finely stranded (class 5) |
Insulation | EPR, Compound type: 3GI3 |
Electrical Field Control | Inner/outer layer of semiconductive rubber compound, metallic concentric screen on each core |
Core Identification | Natural coloring with black semiconductive rubber |
Core Arrangement | Three main conductors with individual concentric protective-earth conductors |
Inner Sheath | EPR with waterproofing, Compound type: GM1B |
Outer Sheath | Synthetic elastomer (e.g., CM, water-proof), Compound type: 5GM3, Color: Red |
Electrical Parameters | |
Rated Voltage | 1.8/3 kV |
Max. Permissible Operating Voltage AC | 2.1/3.6 kV |
Max. Permissible Operating Voltage DC | 2.7/5.4 kV |
AC Test Voltage | 6 kV |
Chemical Parameters | |
Resistance to Fire | EN 60332-1-2; IEC 60332-1-2 |
Resistance to Oil | EN 60811-404, IEC 60811-404 |
Weather Resistance | Unrestricted use indoors/outdoors, resistant to ozone, UV, moisture |
Water Resistance | EN50525-2-21 |
Thermal Parameters | |
Max. Permissible Temp. at Conductor | 90 °C |
Max. Short Circuit Temp. of Conductor | 250 °C |
Ambient Temp. (Fixed Installation) | Min: -40 °C, Max: 80 °C |
Ambient Temp. (Fully Flexible) | Min: -25 °C, Max: 60 °C |
Mechanical Parameters | |
Max. Tensile Load of Cable | 15 N/mm² |
Max. Tensile Load on Conductor | 15 N/mm² |
Torsional Stress | 25 °/m |
Min. Bending Radii | Acc. to DIN VDE 0298 part 3 |
Voltage Ratings (PROTOLON(ST) .../3E) | |
Medium Voltage Flexible Cables | 3.6/6 kV, 4.2/7.2 kV, 5.4/10.8 kV, 11 kV, 6/10 kV, 6.9/12 kV, 9/18 kV, 17 kV, 8.7/15 kV, 10.4/18 kV, 13.5/27 kV, 24 kV, 12/20 kV, 13.9/24 kV, 18/36 kV, 29 kV, 14/25 kV, 17.3/30 kV, 22.5/45 kV, 36 kV, 18/30 kV, 20.8/36 kV, 27/54 kV, 43 kV |
In an era where reliable power delivery is crucial for industrial operations, especially in harsh aquatic environments, specialized cables like the PROTOLON (ST) .../3E stand out as engineering marvels. These medium voltage flexible cables, designed specifically for immersion in water with a robust copper core shield, bridge the gap between durability and performance. Whether powering dredgers slicing through riverbeds, pumps extracting water from flooded mines, or floating docks bobbing in salty harbors, these cables ensure uninterrupted electricity flow under extreme conditions.
Usage Scenarios:
The primary applications of PROTOLON (ST) .../3E cables revolve around power supply in aquatic environments with high mechanical demands. For dredgers, they connect to equipment per VDE 0168 standards, powering hydraulic systems and motors amid constant vibration and submersion. In floating docks, they facilitate electricity for lighting, cranes, and maintenance tools, flexing with tidal movements.
Pumps represent another key use case, especially submersible types in wells, mines, or wastewater treatment. Their water-resistant design prevents short circuits in sewage or brackish water, while the copper core shield ensures safe operation in conductive fluids.
Beyond these, they're suited for any setup expecting mechanical stresses, like offshore platforms or riverine infrastructure. In saltwater up to 500 meters deep, the tinned copper and elastomer sheath combat corrosion from salinity and marine growth.
In broader trends, as industries adopt greener practices, these cables support renewable projects like hydroelectric pumps or tidal energy setups. Their oil and fire resistance adds value in mixed environments, such as ports with fuel handling.
Frequently Asked Questions:
What makes PROTOLON (ST) .../3E suitable for saltwater use? The tinned copper conductors and 5GM3 outer sheath provide exceptional corrosion resistance, tested for depths up to 500 meters in saline environments.
Can these cables handle extreme temperatures? Yes, with conductor limits at 90°C operational and 250°C short-circuit, plus ambient ranges from -40°C to 80°C fixed, they're versatile for South Africa's varied climates.
How do they prevent electrical faults in water? The copper core shield and semiconductive layers control fields, while waterproof sheaths block ingress, reducing risks of short circuits or water treeing—a degradation phenomenon in wet cables.
Are they easy to install? Absolutely; designed for self-assembly with compatible kits, though factory termination is recommended for optimal performance.
What voltage options are available? From 3.6/6 kV to 27/54 kV, covering most medium voltage needs for pumps, dredgers, and docks.
How do they compare to standard MV cables? Unlike basic XLPE cables prone to water treeing in wet areas, these feature enhanced shielding and flexibility, ideal for dynamic, submerged applications.
Feichun PROTOLON (ST) .../3E medium voltage flexible cables with copper core shield represent a leap forward in underwater power technology, blending robustness with adaptability. Their technical prowess— from EPR insulation to torsional resilience—ensures they meet the demands of dredgers, pumps, and floating docks, even in punishing conditions. In South Africa, where water challenges intersect with industrial ambitions, these cables are more than wires; they're enablers of progress, as seen in Zeekoevlei's restoration, Witwatersrand's dewatering, and Durban's port revitalization.
