Introduction to (N)TMCGCW11Y Medium Voltage Reeling Cable
The (N)TMCGCW11Y cable is a premium-grade medium voltage polyurethane (PUR) reeling cable engineered for the most demanding heavy-duty industrial applications. Designed to comply with the stringent DIN VDE 0250-813 standard, this screened single-core cable combines EPR insulation with a high-performance PUR outer sheath to deliver reliable power transmission in electric rope shovels, port cranes, mining equipment, and drum reeling systems where mechanical stress, oil exposure, and continuous flexing are constant challenges.
Unlike standard rubber-sheathed reeling cables that degrade under harsh industrial conditions, the (N)TMCGCW11Y utilizes a specially formulated polyurethane outer sheath that provides superior abrasion resistance — up to 5 times greater than PCP rubber compounds. This makes it the ideal choice for medium voltage reeling applications where cable reliability directly impacts production uptime, equipment safety, and operational continuity in mining and port environments.
Whether you are specifying cables for a new electric rope shovel, replacing worn-out reeling drum cables, or upgrading your facility’s medium voltage power distribution, understanding the complete technical specifications of (N)TMCGCW11Y will help you make an informed specification decision. This comprehensive datasheet guide covers every aspect of the cable’s construction, electrical properties, and performance characteristics.
Cable Construction and Materials
Conductor Design
The (N)TMCGCW11Y features finely stranded tinned copper conductors compliant with IEC 60228 Class 5 standards. The tinned copper construction provides exceptional flexibility and corrosion resistance, making it particularly suitable for mining environments where moisture and corrosive agents are present. The high strand count distributes bending stress across a greater number of individual wires, reducing fatigue and extending cable life under continuous reeling operations.
Conductor sizes range from 25 mm² to 400 mm², accommodating a wide spectrum of current-carrying requirements from auxiliary power circuits to main drive motor feeds on large mining shovels and port cranes.
Insulation System
Each conductor is insulated with EPR (Ethylene Propylene Rubber), a high-grade insulation compound rated for continuous operation at 90°C conductor temperature. EPR insulation offers excellent dielectric strength, thermal stability, and moisture resistance — critical properties for medium voltage cables operating in challenging environmental conditions.
The insulation thickness is precisely controlled according to the voltage class, ranging from 3.4mm for 3.6/6kV cables up to 8.0mm for 18/30kV cables, ensuring robust dielectric performance under all operating conditions including voltage transients and short-circuit events.
(N)TMCGCW11Y cable construction: conductor, EPR insulation, screening, and PUR sheath layers
Screening System
The (N)TMCGCW11Y features a comprehensive screening system consisting of:
- Semiconductor screen: Extruded semiconducting layer over the insulation to ensure uniform electrical stress distribution and prevent partial discharge
- Metallic screen: Tinned copper braid with coverage exceeding 85%, providing both electrical shielding and a low-impedance fault current path
- Separator layer: Non-woven tape applied over the metallic screen to prevent mechanical interaction between the shield and outer sheath during flexing
This multi-layer screening design is essential for medium voltage cables, where electrical stress management directly impacts cable reliability and safety. The tinned copper braid also serves as an equipment grounding conductor, ensuring proper fault current return paths.
Outer Sheath
The defining feature of the (N)TMCGCW11Y is its polyurethane (PUR) outer sheath. This specially formulated compound delivers:
- Abrasion resistance: Up to 5 times greater than PCP rubber and 2 times greater than standard PVC compounds
- Oil and chemical resistance: Resistant to mineral oils, hydraulic fluids, greases, and common industrial chemicals per EN 60811-404
- Tear resistance: High tensile strength prevents mechanical damage during reeling operations
- UV resistance: UV-stable formulation suitable for outdoor installations without additional protection
- Ozone resistance: Resistant to ozone degradation, critical for high-voltage applications
- Low-temperature flexibility: Remains flexible at temperatures as low as -40°C
The sheath is colored red (RAL 3002) for high-visibility safety identification in mining and industrial environments, in compliance with VDE 0250-813 color coding requirements for medium voltage reeling cables.
(N)TMCGCW11Y UL-certified PUR single-core screened mining cable with red sheath
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Product Designation | (N)TMCGCW11Y |
| Standard | DIN VDE 0250-813 |
| Cable Type | Screened single-core medium voltage reeling cable |
| Conductor Material | Tinned copper, finely stranded (IEC 60228 Class 5) |
| Conductor Size Range | 25 mm² to 400 mm² |
| Insulation | EPR (Ethylene Propylene Rubber), rated 90°C |
| Semiconductor Screen | Extruded semiconducting compound |
| Metallic Screen | Tinned copper braid (≥85% coverage) |
| Outer Sheath | Polyurethane (PUR), red (RAL 3002) |
| Voltage Rating | 3.6/6kV to 18/30kV (medium voltage) |
| Max Conductor Temperature | 90°C (continuous operation) |
| Short Circuit Temperature | 200°C (max 5 seconds) |
| Temperature Range (Fixed) | -40°C to +90°C |
| Temperature Range (Flexing) | -25°C to +60°C |
| Min Bend Radius (Fixed) | 6×D (D = cable outer diameter) |
| Min Bend Radius (Flexing) | 15×D |
| Flex Life Rating | ≥250,000 reeling cycles |
| Flame Retardancy | IEC 60332-1-2; VDE 0482-332-1-2 |
| Oil Resistance | EN 60811-404 (IRM 902 oil, 70°C, 4h) |
| UV Resistance | Yes (per EN 50289-4-11) |
| Ozone Resistance | Yes (per EN 50396) |
| Certifications | CE, RoHS, UL, VDE |
Voltage Classes and Applications
The (N)TMCGCW11Y is available in multiple voltage classes to meet diverse application requirements:
(N)TMCGCW11Y voltage class comparison: 3.6/6kV to 18/30kV applications
| Voltage Class (U0/U) | Max Voltage (Um) | Insulation Thickness | Typical Application |
|---|---|---|---|
| 3.6/6kV | 7.2kV | 3.4mm | Auxiliary power, small drives |
| 6/10kV | 12kV | 4.5mm | Medium drives, conveyor systems |
| 8.7/15kV | 17.5kV | 6.0mm | Large shovel drives, crane mains |
| 12/20kV | 24kV | 7.0mm | Heavy mining, port crane primary |
| 18/30kV | 36kV | 8.0mm | High-power transmission, substation |
For detailed voltage class selection guidance, visit our (N)TMCGCW11Y product detail page or consult with our technical team for project-specific recommendations.
Electrical Properties
Current Carrying Capacity
The ampacity of (N)TMCGCW11Y cables is determined according to IEC 60364-5-52 at a conductor operating temperature of 90°C and reference ambient temperature of 30°C. Values are based on installation method F (free in air) with three loaded conductors in trefoil configuration:
| Cross-Section (mm²) | 3.6/6kV Rating (A) | 8.7/15kV Rating (A) | 18/30kV Rating (A) |
|---|---|---|---|
| 35 | 155 | 150 | 145 |
| 50 | 190 | 185 | 180 |
| 70 | 240 | 235 | 230 |
| 95 | 290 | 285 | 280 |
| 120 | 335 | 330 | 325 |
| 150 | 380 | 375 | 370 |
| 185 | 430 | 425 | 420 |
| 240 | 500 | 495 | 490 |
| 300 | 570 | 565 | 560 |
| 400 | 660 | 655 | 650 |
These values should be derated according to ambient temperature, installation method, and grouping factor. For precise ampacity calculations, refer to our engineering services and IEC 60364-5-52, or consult with our technical team.
Insulation Resistance
The EPR insulation exhibits excellent dielectric properties with an insulation resistance exceeding 1000 MΩ·km at 20°C. The high dielectric strength of EPR, rated at a minimum of 20 kV/mm, provides a robust safety margin against voltage transients, switching surges, and lightning impulses that are common in medium voltage power systems.
Short Circuit Performance
The (N)TMCGCW11Y is designed to withstand short-circuit currents up to the conductor temperature of 200°C for a maximum of 5 seconds. This thermal short-circuit rating ensures the cable can survive fault events without insulation degradation, providing time for protection relays to clear the fault safely.
Compliance and Certification
(N)TMCGCW11Y cables are manufactured under ISO 9001 quality management systems and carry the following certifications:
- CE Marking: Compliant with the Low Voltage Directive (LVD 2014/35/EU)
- VDE 0250-813: German standard for reeling and trailing cables
- UL Listing: Available with UL certification for North American market
- RoHS: Free from hazardous substances
- IEC 60332-1-2: Flame retardant, self-extinguishing
- EN 60811-404: Oil resistance verified
Visit our certifications page to download certificates of conformity, test reports, and declaration documents.
Product Detail and Ordering Information
For detailed product specifications, dimensional data, and ordering information, please visit the (N)TMCGCW11Y product detail page. Our comprehensive product database includes complete datasheets, installation drawings, and technical documentation for all standard configurations.
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