When powering large-scale mining and tunnelling equipment, the choice of trailing cable directly impacts operational safety, equipment uptime, and worker protection. The NTSCGEWOU cable specifications defined under VDE 0250-813 represent a specialized class of medium-voltage flexible trailing cables engineered for the most demanding material handling applications — from open-pit excavators to underground tunnel boring machines.
This guide provides a comprehensive technical breakdown of the NTSCGEWOU flexible trailing cable, covering its construction, materials, electrical ratings, and performance characteristics to help engineers and procurement teams make informed specification decisions.
Understanding the NTSCGEWOU Designation Code
The NTSCGEWOU designation follows German VDE cable naming conventions, where each letter represents a specific construction or performance characteristic:
- N — Sheathed cable (standard type with outer jacket)
- T — Three-core (three main power conductors)
- S — Screened (shielded construction with copper screen over each core)
- C — Copper conductor
- G — Rubber insulation (EPR — Ethylene Propylene Rubber)
- E — Earth (protective conductor included)
- WOU — Resistant to Water, Oil, and abrasion (W = water resistant, O = oil resistant, U = UV and weather resistant)
This designation tells engineers that the cable is a three-core, screened, copper conductor cable with rubber insulation, a protective earth conductor, and enhanced resistance to water, oil, and abrasion — the essential properties for mining trailing cable applications.
Cable Construction and Materials
Conductor Construction
NTSCGEWOU cables use Class 5 stranded tinned copper conductors in accordance with IEC 60228. The Class 5 fine-wire stranding provides the exceptional flexibility required for trailing applications where cables are subjected to continuous bending, torsion, and reeling. Tinning of the copper strands prevents oxidation and corrosion, maintaining conductor integrity in harsh mining environments with high humidity and chemical exposure.
Insulation and Jacket Materials
- Insulation: EPR (Ethylene Propylene Rubber) — provides excellent electrical properties, heat resistance up to 90°C conductor temperature, and superior flexibility compared to XLPE alternatives
- Outer jacket: Heavy-duty rubber compound — specifically formulated for resistance to abrasion, impact, oil, water, and UV exposure encountered in mining operations
Key Technical Specifications
Voltage and Temperature Ratings
| Parameter | Specification |
|---|---|
| Voltage Rating | 3.6/6kV to 20/35kV |
| Conductor Material | Class 5 stranded tinned copper |
| Insulation | EPR (Ethylene Propylene Rubber) |
| Outer Jacket | Heavy-duty rubber compound |
| Standard | VDE 0250-813 |
| Flame Retardancy | IEC/EN 60332-1-2 |
| Torsional Resistance | ±25 degrees per meter |
| Travel Speed | Up to 120 m/min |
The wide voltage range from 3.6/6kV to 20/35kV makes NTSCGEWOU suitable for various mining equipment power requirements, from medium-voltage distribution to high-voltage direct power supply to large excavators and shovels. For a comprehensive overview of our mining cable product range, the full catalog includes multiple voltage ratings and configurations.
Performance Characteristics
Flexibility and Torsional Resistance
The NTSCGEWOU cable is engineered to withstand ±25 degrees per meter of torsional stress — a critical specification for reeling and trailing applications where cables rotate and twist during equipment movement. The Class 5 conductor stranding, combined with the rubber insulation system, enables travel speeds up to 120 m/min, accommodating the operational demands of high-speed mining equipment.
Environmental Resistance
The WOU designation indicates the cable’s resistance to the three most common environmental hazards in mining:
- Water resistance (W): Suitable for wet mining environments, including areas with water spray, groundwater, and washing operations
- Oil resistance (O): The rubber jacket resists degradation from hydraulic oils, lubricants, and fuels present in mining equipment areas
- UV and weather resistance (U): The jacket compound includes UV inhibitors for outdoor open-pit mining applications with direct sunlight exposure
Applicable Standards and Certifications
NTSCGEWOU cables manufactured by TEBAOFLEX CABLE comply with:
- VDE 0250-813: German standard for cables for mining and similar applications
- IEC/EN 60332-1-2: Flame retardancy test for single vertical insulated wires
- ISO 9001:2015: Quality management system certification
- ISO 14001:2015: Environmental management system certification
For detailed compliance documentation, review our certifications and standards compliance page.
Conclusion
Understanding NTSCGEWOU cable specifications — from the VDE 0250-813 designation code and Class 5 tinned copper conductors to the EPR insulation and torsional resistance rating — is essential for specifying the correct trailing cable for mining and tunnelling operations. The combination of medium-voltage capability, flexibility, and environmental resistance makes NTSCGEWOU the engineered solution for heavy-duty material handling equipment.
For projects requiring NTSCGEWOU trailing cables with VDE 0250-813 compliance, TEBAOFLEX CABLE offers manufacturing to the highest quality standards with full technical documentation.
Frequently Asked Questions
What does NTSCGEWOU stand for in cable designation?
NTSCGEWOU is a VDE cable designation where N = sheathed, T = three-core, S = screened, C = copper conductor, G = rubber insulation (EPR), E = earth conductor, and WOU = resistant to water, oil, and UV/abrasion.
What voltage ratings are available for NTSCGEWOU cable?
NTSCGEWOU cables are available in voltage ratings from 3.6/6kV up to 20/35kV, covering medium to high-voltage mining power supply applications. The specific voltage rating depends on the equipment requirements and installation conditions.
What is the torsional resistance of NTSCGEWOU cable?
NTSCGEWOU cable is engineered to withstand torsional stress of plus or minus 25 degrees per meter, making it suitable for reeling and trailing applications where cables are subjected to rotational movement during equipment operation.
What standard does NTSCGEWOU cable comply with?
NTSCGEWOU cables are manufactured in accordance with VDE 0250-813, the German standard for cables used in mining and similar heavy-duty applications. They also meet IEC/EN 60332-1-2 for flame retardancy.
Why are tinned copper conductors used in NTSCGEWOU cable?
Tinned copper conductors prevent oxidation and corrosion in humid mining environments. At the operating temperatures and moisture levels common in mining, bare copper would oxidize over time, increasing resistance and creating connection reliability issues.
Need help selecting the right NTSCGEWOU cable for your mining operation? Contact us or Request a Quote.
Send us your application/equipment, voltage, conductor size, number of cores, cable movement, installation environment, required standards, and required quantity — our engineering team will review and recommend a suitable cable solution.
