BS 6708 Type FS4 640/1100V Flat Heavy-Duty Overhead Catenary Mining Cable with EPR Insulation & Chloroprene Sheath
Feichun BS 6708 Type FS4 640/1100V Flat Heavy-Duty Overhead Catenary Mining Cable with EPR Insulation & Chloroprene Sheath
APPLICATION:
Used as supplying cable on overhead catenary sistems and similar purposes.
Cable Structure:
CONDUCTOR : Electrolytic, stranded, tinned copper wire IEC 60228 Class 5
INSULATION : EPR
SEPERATOR : Colored Textile tape for core identification.
SCREEN : Tinned copper braided screen over phase and pilot cores.
LAYUP : All cores are laid parallel in flat configuration without contacting each other.
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 | 4×2,5 | 4×4 | |
|---|---|---|---|
Phase Conductors | |||
Number and cross section | mm2 | 4×2,5 | 4×4 |
Insulation thickness | mm | 1.0 | 1.0 |
Cable details | |||
Outer sheath thickness | mm | 3.8 | 3.8 |
Min. overall dimensions | mm | 18,1×12,4 | 32,2×13,3 |
Max. overall dimensions | mm | 20,1×14,4 | 34,1×15,3 |
Min. bending radius | mm | 100 | 120 |
Appx. cable weight | kg/km | 450 | 550 |
Copper weight | kg/km | 160 | 230 |
Electrical details | |||
“Continuous current | A | 28 | 37 |
Max. DC resistance at 20°C | |||
Conductors | Ω /km | 7.82 | 4.85 |
Each screen | Ω /km | 7.40 | 8.48 |
When mobile mining equipment requires a safe, flexible, and mechanically robust power supply, overhead catenary systems are often the preferred solution. In these demanding environments, BS 6708 Type FS4 640/1100V flat mining cable has become a proven choice. But what exactly is BS 6708 Type FS4, how does it differ from other mining cables, and why is it particularly suitable for overhead applications in South African mines?
What Does “BS 6708 Type FS4” Mean in Mining Cable Standards?
BS 6708 is a British Standard specifically developed for flexible trailing and reeling cables used in mining and quarrying operations. Within this standard:
“FS” designates Flat Screened cable construction
“Type 4” identifies cables intended for overhead catenary systems
640/1100V defines the rated voltage for medium-duty mining power distribution
Unlike round trailing cables, Type FS4 cables are designed with a flat configuration, allowing them to be suspended, guided, and supported efficiently along overhead rails or catenary wires.
Why Are Flat Mining Cables Preferred for Overhead Catenary Systems?
Flat mining cables such as BS 6708 Type FS4 offer several advantages in overhead applications:
Improved stability when suspended
Reduced twisting and pendulum movement
Even load distribution across conductors
Lower mechanical stress during repeated movement
These characteristics are essential in underground hard-rock mines, decline shafts, and trackless mining operations, particularly in South Africa’s gold, platinum, and chrome mines.
Where Is BS 6708 Type FS4 Cable Commonly Used?
What Are Typical Applications?
Overhead catenary power supply systems
Underground mobile substations
Trackless mining equipment power feeds
Conveyor and shuttle car power distribution
Tunnel and decline mining installations
How Is BS 6708 Type FS4 Used in South African Mines? (Case Study)
In a platinum mine in Limpopo Province, BS 6708 Type FS4 cables were installed to supply power to overhead-fed drilling and bolting equipment.
Key outcomes:
Reduced cable twisting compared to round trailing cables
Lower maintenance frequency
Improved operational uptime
Enhanced safety due to screened construction
Mine engineers reported longer service life and improved cable management in narrow tunnels.
How Does Type FS4 Compare with Other BS 6708 Mining Cables?
Feature | Type FS4 | Type 14 | Type 16 |
|---|---|---|---|
Cable Shape | Flat | Round | Round |
Application | Overhead catenary | Trailing | Heavy-duty trailing |
Screening | Yes | Partial | Yes |
Movement Type | Suspended | Dragging | Dragging |
Mechanical Stress | Moderate | High | Very High |
Conclusion:
FS4 is not a replacement for trailing cables—it is purpose-designed for overhead systems.
What Are Best Installation Practices for FS4 Mining Cable?
Installation Recommendations
Maintain minimum bending radius during suspension
Use approved cable clamps and hangers
Avoid sharp edges and pinch points
Ensure correct earthing of braided screens
Conduct insulation resistance testing before commissioning
Frequently Asked Questions (FAQ)
Is BS 6708 Type FS4 suitable for trailing applications?
No. FS4 is designed specifically for overhead catenary systems, not continuous ground dragging.
Can FS4 cables be used in wet underground environments?
Yes. The EPR insulation and chloroprene sheath provide excellent moisture resistance.
Does FS4 comply with South African mining requirements?
While BS 6708 is a British Standard, FS4 cables are widely accepted in South African mines, especially when aligned with internal mine specifications and safety protocols.
How long is the service life of FS4 mining cables?
With proper installation and handling, FS4 cables typically offer longer service life than equivalent round cables in overhead systems.
Why Choose Feichun BS 6708 Type FS4 Mining Cable?
Proven performance in global mining operations
High-quality EPR and chloroprene materials
Flat, stable design for overhead systems
Strong electrical and mechanical reliability
Looking for a Reliable Overhead Mining Cable Solution?
If you are designing or upgrading an overhead catenary power system for underground or surface mining operations, Feichun BS 6708 Type FS4 640/1100V mining cable offers a safe, durable, and cost-effective solution.
👉 Contact our technical team today for datasheets, project references, or application-specific recommendations.
