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(N)TSCGECWÖU – TBM Medium Voltage Cable for Tunnel Boring Machines
(N)TSCGECWÖU TBM Cable is a medium voltage reeling power cable designed for tunnel boring machines, underground mining equipment and tunnel construction power supply systems. It combines flexible class 5 tinned copper conductors, EPR insulation, semiconductive field control layers and a red elastomeric outer sheath for demanding mobile operation.
- Rated voltage: 3.6/6kV, 6/10kV, 8.7/15kV, 12/20kV and 18/30kV.
- Application: Reeling power supply for TBM machines and underground mine tunnel projects.
- Conductor: Flexible tinned electrolytic copper conductor, DIN VDE 0295 class 5.
- Insulation: 3GI3 type EPR compound with semiconductive electrical field control.
- Sheath: 5GM5 type elastomer compound, red.
- Performance: Oil resistant, flame retardant, UV resistant, weather resistant, moisture resistant and tear resistant.
(N)TSCGECWÖU TBM Cable for Tunnel Boring Machine Power Supply
The (N)TSCGECWÖU TBM Cable is engineered for medium voltage power transmission on tunnel boring machines, especially where the cable must be reeled, pulled and moved continuously during underground construction. Its structure supports stable power delivery, electrical field control and mechanical protection in wet, abrasive and restricted tunnel environments.
Why This Cable Fits TBM Operation
- Designed for mobile medium voltage supply: Suitable for TBM reeling systems where the cable follows machine movement instead of remaining fixed in one route.
- Electrical field control: Inner and outer semiconductive rubber layers help control electrical stress around the insulated conductors, which is important for medium voltage reliability.
- Flexible conductor design: Class 5 tinned copper conductors improve flexibility and corrosion resistance in humid tunnel or mine environments.
- Integrated protection and monitoring: Control cores, protective earth conductors and concentric copper wire spinning support safer equipment operation and easier system supervision.
- Built for harsh sites: The red elastomeric sheath is specified for oil resistance, flame retardance, weather resistance, UV resistance, moisture resistance and tear resistance.
Technical Specifications
| Product Type | Medium Voltage Cable for Tunnel Boring Machines |
| Type Designation | (N)TSCGECWÖU – TBM |
| Rated Voltage | 3.6/6kV, 6/10kV, 8.7/15kV, 12/20kV, 18/30kV |
| AC Test Voltage | 11kV, 17kV, 24kV, 29kV, 43kV according to voltage grade |
| Max. Operating Voltage AC | 4.2/7.2kV to 20.8/36kV |
| Max. Operating Voltage DC | 5.4/10.8kV to 27/54kV |
| Working Temperature | -40°C to +80°C fixed; -25°C to +80°C mobile |
| Max. Tensile Load | 15 N/mm² |
| Max. Torsion | 25°/m |
| TBM Travel Speed | Max. 30 m/min |
| Minimum Direction Change Distance | 20 x D |
Cable Construction
- Conductors: Flexible tinned electrolytic copper conductor, DIN VDE 0295 class 5.
- Insulation: 3GI3 type EPR compound for medium voltage operation.
- Electrical field control: Inner and outer semiconductive rubber layers.
- Control cores: Tinned copper conductors with semiconductive layer.
- Protective earth conductor: Tinned copper and textile braiding combined cores laid concentrically around each power core.
- Core identification: Main cores in natural color with black semiconductive rubber; control cores in black.
- Lay-up: Three main conductors laid up with three control cores in the outer interstices.
- Inner sheath monitoring: GM1b type EPR compound.
- Conductor screen: Overall concentric layer of copper wire spinning.
- Outer sheath: 5GM5 type elastomer compound, red.
Production and Test Standards
| Construction | Based on DIN VDE 0250-813 |
| General Requirements | DIN VDE 0250-1 |
| Guide to Use | DIN VDE 0298-3 |
| Electrical Tests | DIN VDE 0472-501, 503, 508 |
| Non-Electrical Tests | DIN VDE 0472-401, 402, 602, 303, 615 |
| Fire Performance | DIN VDE 0472-803, 804; VDE 0482-332-1-2; DIN EN 60332-1-2; IEC 60332-1 |
| Oil Resistance | HD/EN/IEC 60811-2-1; DIN VDE 0473-811-2-1 |
Available Size Range
| 3.6/6kV | 3 x 25 + 3 x 16/3E + 3 x 2.5 ST to 3 x 120 + 3 x 70/3E + 3 x 2.5 ST; approx. 42.2-68.0mm OD; 2770-7400kg/km. |
| 6/10kV | 3 x 25 + 3 x 16/3E + 3 x 2.5 ST to 3 x 120 + 3 x 70/3E + 3 x 2.5 ST; approx. 45.5-69.3mm OD; 2975-7840kg/km. |
| 12/20kV | 3 x 25 + 3 x 16/3E + 3 x 2.5 ST to 3 x 120 + 3 x 70/3E + 3 x 2.5 ST; approx. 51.1-77.8mm OD; 3600-8740kg/km. |
Applications
- Power supply cable for tunnel boring machines.
- Medium voltage reeling cable for underground tunnel construction.
- Mobile power cable for underground mining equipment.
- Heavy-duty cable systems requiring flame retardance, oil resistance and mechanical flexibility.
- Project installations where cable diameter, weight, tensile load and bending behavior must be checked before supply.
FAQ
What is the (N)TSCGECWÖU TBM Cable used for?
The (N)TSCGECWÖU TBM Cable is used as a medium voltage reeling power supply cable for tunnel boring machines and underground mining tunnel construction equipment.
Which voltage grades are available?
The cable is specified for 3.6/6kV, 6/10kV, 8.7/15kV, 12/20kV and 18/30kV systems, depending on project requirements.
Why are semiconductive layers used in this cable?
Semiconductive layers help control the electrical field around medium voltage conductors, reducing electrical stress concentration and supporting stable operation.
Is this cable suitable for mobile operation?
Yes. It is designed for TBM reeling applications, with mobile working temperature from -25°C to +80°C, maximum TBM travel speed up to 30 m/min and a minimum direction change distance of 20 x D.
What information is needed for quotation?
Please provide rated voltage, cross-section, required length, reel or drum details, operating speed, installation environment, bending requirements and any special marking or certification needs.