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Up to 35 (42) kV NTMCWOEU Cable (Special Medium Voltage Flexible Connection Cable)
Overview: The TEBAOFLEX NTMCWOEU cable is an ultimate special medium voltage flexible connection cable. Engineered for extreme tight spaces, it is the perfect solution for switchgears and mobile transformer substations requiring up to 35 (42) kV.
Key Specifications:
- Voltage Range: 6/10 (12) kV, 12/20 (24) kV, 18/30 (36) kV, up to 20/35 (42) kV.
- Conductor: Tinned copper, fine wire class 5 (DIN VDE 0295).
- Insulation & Sheath: EPR-3GI3 Rubber insulation with a heavy-duty Red 5GM3 Rubber outer sheath.
- Bending Radius: Exceptionally tight 5 x D for fixed installations.
- Advanced Feature: “Easy strippable” outer conductive layer for fast termination.
- Standards: DIN VDE 0250 Part 813, UV-resistant, Flame-retardant (IEC 60332-1).
The Ultimate NTMCWOEU Cable for High-Voltage Switchgear Connections
When engineering high-capacity power distribution systems and compact transformer substations, standard rigid cables simply cannot navigate the tight internal spaces. The TEBAOFLEX NTMCWOEU cable is an industry-leading, special medium voltage flexible connection cable explicitly designed to solve this problem. Engineered to withstand demanding electrical loads up to 35 (42) kV, this ultimate flexible cable provides secure, highly efficient, and incredibly space-saving power transmission for modern heavy industrial applications.
Why is Our NTMCWOEU Cable the Best Choice for Switchgears?
As a specialized direct-from-factory manufacturer, TEBAOFLEX builds every NTMCWOEU cable to rigorous international standards, fully complying with DIN VDE 0250 Part 813. One of the most significant advantages of our product is its exceptionally tight bending radius. While standard medium voltage cables are stiff and hard to manipulate, our Class 5 flexible tinned copper conductor allows for a bending radius of just 5 x Outer Diameter (5xD) during fixed installations. This makes it the best choice for routing through complex and highly compact electrical panels.
Furthermore, terminating medium voltage cables can be labor-intensive. We have engineered the outer semiconducting layer of this cable to be “easy strippable” (cold strippable). This drastically reduces installation time and minimizes the risk of damaging the underlying insulation during splicing. For more technical background on how internal routing impacts electrical infrastructure, refer to the core principles of electrical switchgear design.
Detailed Cable Construction (DIN VDE 0250 P 813)
To guarantee maximum safety under extreme voltages, our NTMCWOEU cable features a highly sophisticated multi-layer rubber construction:
- Conductor: Tinned copper, fine wire class 5 (acc. to DIN VDE 0295). The tinning prevents oxidation at high temperatures up to 90°C.
- Inner Semiconducting Layer: Special rubber compound, conductive (approx. 0.6 mm wall thickness) to smooth the electrical field.
- Insulation: Premium EPR-3GI3 rubber compound for outstanding dielectric strength.
- Outer Semiconducting Layer: Special rubber compound, conductive, and specifically designed to be easy strippable (cold peelable).
- Metallic Screen: Spiral wrapping of fine tinned copper wires to manage capacitive charging currents.
- Outer Sheath: Heavy-duty 5GM3 rubber compound (acc. to DIN VDE 0207 part 21). UV-resistant, standard color Red.
Technical Data & Operational Limits
Our medium voltage cables undergo rigorous testing (including short-circuit capacity evaluated per IEC 60949). Please review the operating limits below:
| Standard Alignment | DIN VDE 0250 Part 813 |
| Max. Conductor Temperature | +90°C |
| Max. Short Circuit Temp. | +250°C (Max time: 1 second) |
| Surface Temp. (Fixed) | -40°C to +80°C |
| Surface Temp. (Moved) | -25°C to +80°C |
| Min. Bending Radius | Fixed: 5 x Ø | Moved: 10 x Ø |
| Resistances | Flame-retardant (IEC 60332-1), Oil-resistant (EN 60811-2-1 / ASTM No. 2), UV-Resistant |
Manufacturing Capabilities: Dimensions & Weight
TEBAOFLEX provides the NTMCWOEU cable across a comprehensive range of voltage classes. Below is a selection of our common industrial specifications:
| Rated Voltage (Uo/U) | No. of Cores x Cross-section (mm²) | Conductor Dia. approx (mm) | Outside Dia. approx (mm) | Resistance at 20°C (max. Ω/km) | Weight approx (kg/km) |
|---|---|---|---|---|---|
| 6/10 (12) kV | 1 x 50 / 16 | 9.3 | 27.0 | 0.393 | 1,260 |
| 1 x 120 / 16 | 14.6 | 33.5 | 0.164 | 2,180 | |
| 1 x 300 / 25 | 24.1 | 43.0 | 0.065 | 4,280 | |
| 12/20 (24) kV | 1 x 50 / 16 | 9.3 | 31.5 | 0.393 | 1,560 |
| 1 x 120 / 16 | 14.6 | 38.0 | 0.164 | 2,460 | |
| 1 x 300 / 25 | 24.1 | 48.0 | 0.065 | 4,760 | |
| 20/35 (42) kV | 1 x 95 / 16 | 12.9 | 44.0 | 0.210 | 2,900 |
| 1 x 240 / 25 | 20.6 | 51.7 | 0.0817 | 5,000 |
* Note: Cross-sections from 16mm² up to massive 630mm² are fully available across all voltage ratings. Please contact us for the complete technical data sheet.
Frequently Asked Questions (FAQ)
1. What does an “easy strippable” outer conductive layer mean for installers?
Standard medium voltage cables require specialized heating tools or intensive scraping to remove the outer semiconducting layer during termination. The NTMCWOEU cable features a cold-peelable layer that can be stripped quickly and cleanly with standard tools, saving hours of labor during switchgear assembly.
2. Can this cable handle high short-circuit currents?
Yes. Built with premium EPR-3GI3 insulation, this cable handles a maximum short circuit temperature of +250°C for up to 1 second. The constant K=143 is calculated according to IEC 60949, ensuring your infrastructure is protected during sudden grid surges.
3. Are you a trading company or a direct manufacturer?
TEBAOFLEX is a direct, certified cable manufacturer. We produce these high-end medium voltage cables in our own facilities, allowing us to offer extremely competitive pricing, custom cut lengths, and strict quality control. To request a wholesale quote, please contact our industrial engineering team.
