What TR Means
TR designates the Trailing variant, specifically engineered for cables that are dragged behind mobile equipment across open-pit mine floors. Unlike reeling cables that wind onto drums in controlled layers, trailing cables are subjected to continuous abrasion against rock, gravel, and soil, impact from falling debris, and potential crushing by heavy vehicle tracks. The TR variant addresses these conditions through reinforced sheath design and optimized compound selection.
Key Differences from Standard (N)TSCGEWOEU
| Feature | Standard (N)TSCGEWOEU | (N)TSCGEWOEU-TR |
|---|---|---|
| Primary Operation | Reeling / Festoon | Trailing / Drag |
| Outer Sheath Compound | 5GM3 or 5GM5 | 5GM5 enhanced, improved tear/abrasion |
| Inner Sheath | Double layer EPR | 5GM5 bonded construction |
| Sheath Bonding | Separate layers | Inseparably bonded inner and outer |
| Sheath Colour | Red | Black |
| Abrasion Resistance | High | Very High (trailing-optimized) |
| Core Configuration | 3 power + 3 earth | 3 power + 3 earth |
| Voltage Range | 3.6/6kV – 12/20kV | 3.6/6kV – 18/30kV |
| Tensile Load | 20 N/mm² | 20 N/mm² |
| Primary Customer | Crane / Festoon systems | Open-pit mining operations |
Construction
| Layer | Material |
|---|---|
| Phase Conductor | Extra-fine stranded tinned copper, Class 5 / FS (VDE 0295) |
| Inner Semi-Conductive Layer | Extruded semi-conductive rubber compound |
| Insulation | HEPR compound (at least 3GI3 per VDE 0207-20) |
| Outer Semi-Conductive Layer | Extruded semi-conductive rubber, cold strippable (Easy Strip) |
| Earth Conductors | 3 x tinned copper Class 5 / FS, in core interstices |
| Central Filler | Conductive compound on textile polyester support |
| Inner Sheath | 5GM5 special compound, improved tear resistance |
| Anti-Torsion Braid | Reinforced polyester thread braid, vulcanized bonded |
| Outer Sheath | 5GM5 special compound, inseparably bonded to inner sheath, black |
Core Configuration: 3 Power + 3 Earth
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Voltage (Uo/U) | 3.6/6kV — 6/10kV — 8.7/15kV — 12/20kV — 14/25kV — 18/30kV |
| Design Standard | Based on DIN VDE 0250-813 |
| Conductor Standard | VDE 0295 / IEC 60228 Class 5 / FS |
| Max Conductor Temperature | +90°C |
| Max Short Circuit Temperature | +250°C |
| Ambient Temperature (Fixed) | -50°C to +80°C |
| Ambient Temperature (Mobile) | -35°C to +80°C |
| Min Bending Radius | Acc. to DIN VDE 0298-3 |
| Max Torsional Stress | ±25°/m |
| Max Tensile Load | 20 N/mm² |
| Dynamic Tensile (acceleration) | Up to 30 N/mm² |
| Flame Retardant | IEC 60332-1-2 / EN 60332-1-2 |
| Oil Resistance | DIN EN 60811-404 |
| Abrasion Resistance | Enhanced (trailing-optimized 5GM5) |
| Weather Resistance | Unrestricted outdoor, UV, ozone, moisture resistant |
| Outer Sheath Colour | Black |
| Sheath System | Inseparably bonded inner and outer 5GM5 |
Dimensional Data — 3.6/6 kV
| Cross Section (mm²) | OD min-max (mm) | Weight (kg/km) | Tensile max (N) |
|---|---|---|---|
| 3×25 + 3×10/3E | 37-40 | 2,280 | 2,200 |
| 3×35 + 3×10/3E | 40-43 | 2,750 | 3,100 |
| 3×50 + 3×10/3E | 44-47 | 3,400 | 4,300 |
| 3×70 + 3×16/3E | 47-50 | 4,100 | 5,100 |
| 3×95 + 3×16/3E | 52-56 | 5,450 | 7,000 |
| 3×120 + 3×25/3E | 56-60 | 6,650 | 8,500 |
Dimensional data for 6/10kV, 8.7/15kV, 12/20kV and higher grades available on request.
Why TR is Essential for Open-Pit Trailing
| Hazard | Standard Cable Risk | TR Solution |
|---|---|---|
| Dragging over sharp rock | Outer sheath cuts through, moisture ingress | Enhanced 5GM5 tear resistance + bonded sheath prevents delamination |
| Repeated impact from falling debris | Core deformation, conductor breakage | Double 5GM5 sheath system absorbs impact energy |
| UV exposure in continuous sunlight | Sheath cracking, reduced service life | Black 5GM5 with superior UV stabilisation |
| Oil and fuel spills from mining equipment | Sheath swelling, loss of mechanical properties | Oil-resistant 5GM5 compound per EN 60811-404 |
| Extreme temperature variation | Sheath embrittlement in cold, softening in heat | -50°C to +80°C fixed rating |
| Vehicle track crushing | Permanent core damage | Reinforced anti-torsion braid distributes crush load |
Why Choose TEBAOFLEX (N)TSCGEWOEU-TR
TEBAOFLEX manufactures the TR variant with bonded 5GM5 sheath technology in our ISO 9001 certified facility. Each cable is tested for conductor resistance, high voltage withstand, and sheath integrity before dispatch. For open-pit mining operations where trailing cables are replaced every 6-18 months due to wear, the TR variant’s enhanced abrasion resistance provides measurably longer service life, reducing both cable replacement cost and operational downtime.
Standards and Certifications
| Standard | Scope |
|---|---|
| DIN VDE 0250-813 | Cable design and testing |
| IEC 60228 / VDE 0295 Class 5 / FS | Flexible conductor |
| IEC 60332-1-2 | Flame retardant |
| DIN EN 60811-404 | Oil resistance |
| RoHS | Compliance |
| ISO 9001:2015 | TEBAOFLEX quality management |
Application Environments
| Application | Cable Role |
|---|---|
| Draglines and rope shovels | Trailing power supply over pit floor, dragged behind machine movement |
| Mobile crushers and conveyors | Power feed to semi-mobile processing plant, repositioned weekly |
| Excavators and backhoes | Trailing cable dragged across bench surfaces |
| Dumpers and haul trucks | Auxiliary power trailing for electric-drive trucks |
| Drilling rigs | Power supply trailing behind tracked drill platforms |
| Open-pit mine dewatering pumps | Submersible pump trailing cable on pit slope surfaces |
Project Selection Support
To select the TEBAOFLEX (N)TSCGEWOEU-TR, confirm the operating conditions, conductor configuration, installation route and required performance criteria. Request a Quote
