640/1100V SANS 1520-1 Mining Flexible Cable for Trackless Scoop – Copper Screened, Heavy-Duty TPU Sheathed
🔷 Product Overview
The Trackless Scoop 640/1100 V Mining Flexible Cable is a high-performance, heavy-duty power cable specifically engineered for trackless mining equipment operating in harsh underground environments. Designed in accordance with SANS 1520-1 requirements, this cable delivers exceptional mechanical strength, flexibility, and electrical reliability.
It is widely used in loaders, drilling rigs, LHDs (Load-Haul-Dump machines), and other mobile mining equipment where durability and safety are critical.
🔷 Key Features
Excellent Flexibility – Designed for continuous movement and reeling applications
Water Resistant & Flame Retardant – Suitable for wet and hazardous mining environments
Extreme Temperature Performance
Operating: -25°C to +90°C
Fixed installation: down to -40°C
UV, Ozone & Oil Resistant – Ideal for both underground and surface mining
High Mechanical Strength TPU Sheath – مقا resistant to abrasion and impact
Enhanced Safety – Copper screening improves electrical protection and reduces interference
Durable Marking – Ink-jet or embossed identification for long-term traceability
🔷 Construction Details
Conductor
Class 5 flexible conductors
Tinned annealed copper (compliant with SANS 1411-1)
Separator
Protective tape layer between conductor and insulation
Insulation
EPR (Ethylene Propylene Rubber), Type RD6 (SANS 1411-3 compliant)
Core Configuration
3 Power Cores – Individually screened (tinned copper/nylon braid)
2 Pilot Cores – Unscreeened (control and signaling)
1 Earth Core – Tinned copper for grounding
Central filler: Rubber Type RD1
Outer Sheath
Extra-heavy-duty TPU jacket (ICEA S-75-381 compliant)
Transparent sheath with orange/silver reflective tape for visibility and safety
Marking
Ink-jet (black) or embossed (≥25 mm²)
🔷 Technical Specifications
⚙️ Physical Properties
Power Cores
Conductor size: 35 mm²
Max wire diameter: 0.41 mm
Approx. conductor diameter: 8.5 mm
Screen wire diameter: 0.31 mm
Screen coverage: 80%
Screen cross-section: 27 mm²
Pilot Cores
Quantity: 2
Size: 6 mm²
Conductor diameter: 4.2 mm
Earth Core
Quantity: 1
Size: 16 mm²
Conductor diameter: 5.3 mm
Cable Structure
Lay ratio: Max. 8 × PCD
Overall diameter: 37.0 – 40.0 mm
Cable weight: ~2.74 kg/m
Minimum bending radius: 320 mm
Max. tensile force: 1.73 kN
⚡ Electrical Properties
Power Cores Performance
DC resistance @ 20°C: 0.610 Ω/km
DC resistance @ 90°C: 0.814 Ω/km
Reactance: 0.090 Ω/km
Impedance @ 90°C: 0.819 Ω/km
Current Carrying Capacity (30°C Ambient)
Straight installation: 181 A
On drum (1 layer): 151 A
On drum (2 layers): 121 A
On drum (3 layers): 81 A
Short Circuit Ratings
Symmetrical fault current (1 sec): 4.0 kA
Earth fault current (screens): 2.1 kA
🔷 Applications
This cable is specifically designed for trackless mining operations, including:
Load-Haul-Dump (LHD) machines
Underground loaders
Single / double / triple boom drilling rigs
Large drilling equipment
Low-profile dumpers
Submersible pumps
On-board machine wiring
Other heavy-duty industrial environments
Compliance with SANS Standards
This cable is designed based on SANS 1520-1, which governs flexible trailing cables used in mining applications.
Key compliance areas include:
Electrical safety and insulation integrity
Flame retardancy and fire performance
Mechanical durability under dynamic conditions
Conductor and material specifications
In addition, conductor and insulation materials comply with:
SANS 1411-1 (conductors)
SANS 1411-3 (rubber insulation compounds)
This ensures the cable is fully aligned with South African mining regulations and NRCS expectations.
