BS 6708 Type 14 640/1100V Heavy-Duty Mining Power Cable with EPR Insulation & Chloroprene Sheath for Excavating and Crushing Equipment
Feichun BS 6708 Type 14 640/1100V Heavy-Duty Mining Power Cable with EPR Insulation & Chloroprene Sheath for Excavating and Crushing Equipment
APPLICATION:
Used for supplying excavating, crushing machines and equipment.
Cable Structure:
CONDUCTOR : Electrolytic, stranded, tinned copper wire IEC 60228 Class 5
INSULATION : EPR
SEPERATOR : Colored Textile tape for core identification.
SCREEN : Tinned copper / Nylon braided screen over phase cores. Pilot core and ground core are not screened.
LAYUP : All cores are laid up in contact with each other.
BEDDING : Rubber based bedding compound.
OUTER SHEATH : Heavy duty chloroprene outer sheath.
Cable Properties:
RELATED STANDARDS : BS 6708
RATED VOLTAGE : 640/1100 V
TEST VOLTAGE : 3 kV
Technical Specifications:
Cross Section | 3×25+2×16 | 3×35+2×16 | 3×50+2×25 | 3×70+2×35 | 3×95+2×50 | |
|---|---|---|---|---|---|---|
Phase Conductor | ||||||
Number and cross section | mm2 | 3×25 | 3×35 | 3×50 | 3×70 | 3×95 |
Insulation thickness | mm | 1.6 | 1.6 | 1.7 | 1.8 | 2.0 |
Total screen cross section | mm2 | 25.4 | 25.4 | 33 | 35 | 53 |
Earth Conductor | ||||||
Number and cross section | mm2 | 1×16 | 1×16 | 1×25 | 1×35 | 1×50 |
Stranding | mm | 126/0,40 | 126/0,40 | 196/0,40 | 276/0,40 | 396/0,40 |
Conductor diameter | Nom. mm | 5.50 | 5.50 | 6.75 | 8.00 | 9.75 |
Insulation thickness | mm | 1.6 | 1.6 | 1.7 | 1.8 | 2.0 |
Pilot Conductor | ||||||
Number and cross section | mm2 | 1×25 | 1×35 | 1×50 | 1×70 | 1×95 |
Stranding | mm | 196/0,40 | 276/0,40 | 396/0,40 | 360/0,50 | 475/0,50 |
Conductor diameter | Nom. mm | 6.75 | 8.00 | 9.75 | 11.60 | 12.75 |
Insulation thickness | mm | 1.5 | 1.5 | 1.6 | 1.6 | 1.7 |
Cable details | ||||||
Min. overall diameter | mm | 43.2 | 47.3 | 53.7 | 61.2 | 69.3 |
Max. overall diameter | mm | 46.6 | 50.7 | 57.6 | 65.0 | 73.9 |
Min. bending radius | mm | 420 | 457 | 519 | 585 | 666 |
Radial diameter of outer sheath | mm | 5.0 | 5.2 | 5.7 | 6.3 | 7.0 |
Max. pulling tension | kgf | 638 | 729 | 910 | 1.148 | 1.446 |
Appx. cable weight | kg/km | 3.55 | 4.28 | 5.65 | 7.52 | 9.8 |
Copper weight | kg/km | 1.307 | 1.675 | 2.34 | 3.228 | 4.326 |
Electrical details | ||||||
“Continuous current | A | 110 | 135 | 170 | 205 | 250 |
Short curcıit current for 1 s | A | 3.45 | 3.45 | 4.55 | 4.82 | 7.3 |
Max. DC resistance at 20°C | ||||||
Phase and earth conductors | Ω /km | 0.795 | 0.565 | 0.393 | 0.277 | 0.21 |
Pilot Conductor | Ω /km | 1240 | 1240 | 0.795 | 0.565 | 0.393 |
3 screens in parallel connection | Ω /km | 1.10 | 1.20 | 1.40 | 0.70 | 0.85 |
Mining operations in South Africa demand power solutions that are robust, reliable, and capable of withstanding harsh underground and surface conditions. Among these solutions, the BS 6708 Type 14 640/1100V Heavy-Duty Mining Power Cable stands out for its durability, electrical performance, and compliance with stringent standards. But what exactly makes this mining cable suitable for supplying excavating and crushing machines? How does it compare to other types of mining cables? And what practical considerations should engineers and procurement teams know before selecting it?
What Is the BS 6708 Type 14 Mining Cable?
The BS 6708 Type 14 cable is a heavy-duty mining power cable specifically designed to supply power to high-demand equipment like excavators, crushers, and other machinery in mining environments. Its design emphasizes mechanical strength, electrical reliability, and safety under challenging operational conditions.
Standards Compliance: Manufactured to meet the BS 6708 standard, a key benchmark for mining cables in the UK and internationally, including South African mining operations.
Voltage Rating: 640/1100V, suitable for medium-duty industrial and mining equipment.
Test Voltage: 3 kV, ensuring high safety margins for insulation performance.
This cable is widely recognized for delivering stable power, even in high-strain applications such as mobile crushers, tunnel boring machines, and drilling rigs.
Where Is the BS 6708 Type 14 Cable Used?
Which Mining Equipment Benefits Most?
The BS 6708 Type 14 is ideal for excavating and crushing machines, including:
Tunnel boring machines and roadheaders
Excavators and draglines
Crushers and mills
Conveyor drives
Why Is It Suitable for South African Mines?
South Africa’s mines—especially gold, platinum, and coal operations—often face:
High mechanical stress
Moist, dusty, and chemically aggressive environments
Frequent equipment movement and bending
The BS 6708 Type 14’s flexible, abrasion-resistant construction allows it to handle these conditions without failure.
How Does the BS 6708 Type 14 Compare to Other BS 6708 Mining Cables?
Feature | Type 11 | Type 14 | Type 7M |
|---|---|---|---|
Conductor | Tinned copper | Tinned copper | Tinned copper |
Insulation | EPR | EPR | EPR |
Outer Sheath | Chloroprene | Heavy-duty Chloroprene | Chloroprene |
Voltage Rating | 640/1100V | 640/1100V | 640/1100V |
Typical Use | General mining power | Excavating & crushing | Mobile heavy machinery |
Bending Flexibility | Medium | High | Very High |
Max Pulling Tension | 700–1,200 kgf | 638–1,446 kgf | 500–1,200 kgf |
The Type 14 offers higher mechanical protection and bending tolerance, making it preferred for mobile crushers and machines with high load currents.
How Should BS 6708 Type 14 Cables Be Installed?
What Are the Best Practices?
Pulling: Do not exceed the maximum pulling tension to avoid conductor damage.
Bending Radius: Maintain minimum bending radius (420–666 mm) during installation to preserve insulation integrity.
Screen Termination: Properly connect screens to grounding points to prevent electrical faults.
Environmental Protection: Use additional conduits or troughs in corrosive or high-wear areas.
Can It Be Buried?
Yes, but additional mechanical protection (conduit or armored tray) is recommended in areas with high crushing or abrasion risk.
Frequently Asked Questions (FAQ)
Can BS 6708 Type 14 Cables Be Used for High-Voltage Mining Equipment?
No, Type 14 is rated 640/1100V. For equipment requiring higher voltage, AS/NZS 2802 or SANS Type 61A cables are more appropriate.
How Does Type 14 Compare to Type 11 in Durability?
Type 14 offers heavier-duty chloroprene sheathing and larger conductor sizes, improving both mechanical and electrical performance.
What Are Typical Cable Sizes for Excavators?
Commonly used: 3×50+2×25 for medium excavators and 3×70+2×35 for heavy-duty crushers.
How Long Can These Cables Last in South African Mines?
With proper installation and maintenance, Type 14 cables can last 7–10 years, depending on mechanical stress and environmental conditions.
Is It Compatible With Reeling Systems?
Yes, the flexible stranded copper design and EPR insulation allow for light reeling applications, but heavy-duty continuous reeling requires specialized trailing cable variants.
What Are the Advantages of Choosing BS 6708 Type 14?
High mechanical strength for abrasive mining environments
Excellent electrical performance, low resistance, and high current ratings
Flexible and easy to install despite large conductor sizes
Durable chloroprene sheath, resistant to chemicals, oils, and wear
Compliant with international standards (BS 6708), recognized in South Africa
For mining operations seeking reliable, heavy-duty power cables for excavating and crushing equipment, the BS 6708 Type 14 offers a proven solution. Contact your local supplier or Feichun distributor today to discuss sizes, installation options, and bulk orders tailored to your South African mining project. Protect your equipment, improve uptime, and reduce maintenance costs with the right mining cable.
