(N)TSCGEWOU Submersible Medium Voltage Cable | TEBAOFLEX CABLE | 8.7/15kV – 12/20kV | 300m Underwater Rating
The (N)TSCGEWOU from TEBAOFLEX CABLE is a flexible medium-voltage submersible cable built for permanent immersion in salty and brackish water up to 300 metres. Designed for submersible pumps, dredgers, floating docks, and trailing equipment in opencast mining, it delivers reliable power under sustained mechanical stress and underwater conditions.
Product Overview
The (N)TSCGEWOU Submersible cable is part of TEBAOFLEX CABLE‘s specialized medium-voltage portfolio, engineered specifically for permanent underwater operation. Rated at 8.7/15kV and 12/20kV, this cable is built for continuous immersion in fresh, salty, and brackish water at depths of up to 300 metres — making it the go-to power supply solution for submersible pumps, dredging vessels, floating docks, and mobile mining equipment operating in wet and abrasive environments.
Manufactured to VDE 0250 Part 813 and HD 22.16 standards, the cable combines field-proven flexibility with robust waterproofing and mechanical durability. TEBAOFLEX CABLE‘s in-house testing protocols — including flame retardancy per IEC/EN 60332-1-2 and oil resistance per DIN VDE 0473-811-404 — ensure each drum meets the performance requirements for some of the most demanding subsea and industrial applications worldwide.
The distinctive black outer sheath (CM rubber compound) provides superior resistance to water ingress, abrasion, oils, and chemicals. TEBAOFLEX CABLE offers customised product services tailored to all performance requirements of your cable working application, with any other sizes or designs available on request.
Key Features & Benefits
Permanent Submersible Capability: Rated for continuous immersion in fresh, salty, and brackish water up to 300 metres — a specification that sets this cable apart from standard industrial power cables.
Dual-Layer Waterproofing: EPR rubber inner sheath combined with CM rubber outer sheath, both specially formulated for water resistance, prevents moisture penetration over decades of service.
High Mechanical Strength: Withstands the high mechanical stresses typical of pump operations, dredging activities, and trailing applications on opencast mining equipment.
Wide Operating Temperature Range: Fixed installation from -40°C to +90°C; flexing from -25°C to +90°C; maximum permissible water temperature of +40°C.
Flexible Construction: Class 5 tinned copper conductors and rubber insulation enable easy handling, installation, and flexibility for trailing and reeling operations.
Flame Retardant: Certified to IEC/EN 60332-1-2 for enhanced fire safety.
Regulatory Compliance: RoHS Directive and REACH EC compliant.
Construction Details
| Component | Description |
|---|---|
| Phase Conductor | Class 5 tinned copper conductor (flexible stranded), DIN VDE 0295 |
| Semi-Conductive Layers | Semi-conductive tape over conductor; inner and outer semi-conductive rubber layers on insulation |
| Insulation | EPR rubber compound |
| Earth Conductor | Class 5 tinned copper conductor |
| Central Filler | Semi-conductive compound on textile polyester support |
| Inner Sheath | EPR rubber compound, waterproofing |
| Outer Sheath | CM rubber compound, waterproofing |
| Sheath Colour | Black |
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Voltage (U₀/U) | 8.7/15 kV; 12/20 kV |
| Test Voltage | 24 kV (8.7/15 kV); 29 kV (12/20 kV) |
| Ambient Temperature (Fixed) | -40°C to +90°C |
| Ambient Temperature (Flexing) | -25°C to +90°C |
| Max. Permissible Water Temperature | +40°C |
| Max. Short Circuit Temperature | +250°C |
| Min. Bending Radius (Fixed) | 6 × overall diameter |
| Min. Bending Radius (Flexing) | 10 × overall diameter |
| Submersion Depth | Up to 300 metres |
| Flame Retardant | IEC/EN 60332-1-2 |
| Cable Standards | VDE 0250 Part 813, HD 22.16, VDE 0295, EN 60228 |
| Compliance | RoHS Directive; REACH EC |
Current Carrying Capacity (Ambient 30°C)
| Area mm² | Floor (Amps) | 1 Layer | 2 Layer | 3 Layer | 4 Layer | 5 Layer | 6 Layer | 7 Layer |
|---|---|---|---|---|---|---|---|---|
| 25 | 131 | 105 | 80 | 64 | 55 | 50 | 35 | 29 |
| 35 | 162 | 130 | 99 | 79 | 68 | 62 | 44 | 36 |
| 50 | 202 | 162 | 123 | 99 | 85 | 77 | 55 | 44 |
| 70 | 250 | 200 | 153 | 123 | 105 | 95 | 68 | 55 |
| 95 | 301 | 241 | 184 | 147 | 126 | 114 | 81 | 66 |
| 120 | 352 | 282 | 215 | 172 | 148 | 134 | 95 | 77 |
| 150 | 404 | 323 | 246 | 198 | 170 | 154 | 109 | 89 |
| 185 | 461 | 369 | 281 | 226 | 194 | 175 | 124 | 101 |
Reference conditions per DIN VDE 0298-4. For installations with multiple layers on reels, apply the de-rating factors above.
Voltage Drop (per km per ampere)
| Area mm² | PF 0.7 | PF 0.8 | PF 0.9 | PF 1.0 |
|---|---|---|---|---|
| 25 | 1.29 | 1.45 | 1.60 | 1.71 |
| 35 | 0.95 | 1.06 | 1.16 | 1.23 |
| 50 | 0.69 | 0.77 | 0.83 | 0.87 |
| 70 | 0.51 | 0.56 | 0.60 | 0.61 |
| 95 | 0.41 | 0.45 | 0.47 | 0.47 |
| 120 | 0.34 | 0.36 | 0.38 | 0.36 |
| 150 | 0.29 | 0.31 | 0.32 | 0.29 |
| 185 | 0.25 | 0.27 | 0.27 | 0.24 |
De-Rating Factors (Ambient Temperature)
| Temp. | 10°C | 15°C | 20°C | 25°C | 30°C | 35°C | 40°C | 45°C | 50°C | 55°C | 60°C | 65°C | 70°C | 75°C | 80°C |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Factor | 1.15 | 1.12 | 1.08 | 1.04 | 1.00 | 0.96 | 0.91 | 0.87 | 0.82 | 0.76 | 0.71 | 0.65 | 0.58 | 0.50 | 0.41 |
Primary Applications
Submersible Pumps: Deep-well pumps, dewatering pumps, and submersible pumping stations in mining, construction, and municipal infrastructure.
Dredging Operations: Cutter suction dredgers and trailing suction hopper dredgers operating in marine and freshwater environments.
Floating Docks & Marine Installations: Power distribution for floating docks, shipyards, and offshore service platforms.
Opencast Mining: Trailing cable applications for mobile mining equipment operating in wet, abrasive conditions.
Quality & Testing
TEBAOFLEX CABLE operates under ISO 9001:2015 and ISO 14001:2015 certified quality management systems. Each production batch undergoes routine electrical testing per DIN VDE 0472-501, 503, 508 and non-electrical testing per DIN VDE 0472-401, 402, 602, 303, 615. Flame retardancy is verified to VDE 0482-332-1-2 / DIN EN 60332-1-2 / IEC 60332-1-2, and oil resistance to DIN VDE 0473-811-404 / DIN EN 60811-404 / IEC 60811-404.
Packaging
Standard length cable packing on drums. Other packing and delivery forms available on request.
Custom Ordering Information
Any other sizes or designs available on request. TEBAOFLEX CABLE offers customised product services tailored to all performance requirements of your cable working application.
Q1: How long can the (N)TSCGEWOU submersible cable stay underwater?
The (N)TSCGEWOU is designed for permanent immersion — meaning it stays in service for the full lifespan of your equipment, not just temporary deployment. The waterproofing system (EPR inner sheath + CM outer sheath) is formulated to resist water ingress over decades of continuous submersion in fresh, salty, or brackish water. That said, we always recommend periodic insulation resistance testing as part of routine maintenance, especially in aggressive marine environments. TEBAOFLEX CABLE can provide customised testing schedules based on your specific operating conditions.
Q2: What’s the difference between this submersible cable and a standard trailing cable?
The biggest difference is the waterproofing. Standard trailing cables like TEBAOFLEX CABLE‘s NTSCGEWÖU series are built for flexing, reeling, and mechanical durability above ground — they’re not designed to sit in water. The (N)TSCGEWOU adds a dedicated dual-layer waterproof sheath system and specially compounded insulation that prevents water treeing (moisture-induced dielectric breakdown), which is the main failure mode for standard cables when submerged. If your application requires both underwater submersion and trailing movement, we can discuss custom options.
Q3: Do you offer custom lengths and drum packing for this cable?
Yes. TEBAOFLEX CABLE supports custom cut lengths and various drum packing options depending on your project requirements. Standard drums are available for stock orders, but for large-scale projects — say, a dredging operation or a mine dewatering system — we can tailor the drum size, length per drum, and packaging to match your logistics and installation needs. Just let us know the quantity, cross-section, and voltage rating, and we’ll work out a packing plan that makes sense for your site.
