AS/NZS 1802 Type 241SF 1.1-11 kV
Cable description:
Semiconductive screened cable for general use to AS/NZS 1802.
Application:
1.1/1.1 kV to 11/11 kV general purpose cable used for continuous miners, or feeder cables to pumps. Also commonly used for monorails supplying DCBs and longwalls. Cable stranding and lay-up have been modified to provide for maximum flexibility in arduous conditions. Type 241SF cable designed for applications requiring maximum flexibility.
Approvals: AS/NZS 1802
Behaviour in flame and fire: Fire retardant
Temperature range: Maximum operating temperature: +90°C
Minimum operating temperature: -25 °C
Flexibility: Very flexible
Resistance to:
Chemical exposure: Very good/Frequent
Mechanical impact: Heavy
Water exposure: Immersion/Temporary coverage
Solar radiation and
weather exposure: Suitable for direct exposure
Cable design:
Semiconductive elastomer screened power cores, with three earth cores and one extensible pilot.
Core: Metal: tinned copper, three core three earths plus central pilot.
Conductor separator tape: 1.1/1.1 kV – polyester where necessary. 3.3 kV and above – semiconductive screen.
Insulation: EPR (R-EP-90) core with durably printed core numbers at intervals less than 300 mm, on black semiconductive insulation screen for phase identification.
Screen: Semiconductive elastomer screen.
Pilot: Single, in centre of cable. Maximum DC resistance; 5.5 Ω/100 m for power cores to 35 mm². 3 Ω/100 m for power conductors above 35 mm².
Earth: Three semiconductive elastomer covered flexible earths, located in the interstices.
Sheath: Open weave reinforcement, under heavy duty HD-85-PCP.
Installation conditions:
In free air
In duct
Mobile equipment Machines
What Is Feichun AS/NZS 1802 Type 241SF Mining Cable Used For?
The Feichun AS/NZS 1802 Type 241SF 1.1–11 kV mining cable is a semiconductive screened, extra-flexible underground mining cable designed for demanding applications where mechanical abuse, frequent movement, and high electrical performance are expected.
It is widely used as:
Feeder cables for pumps and substations
Power supply cables for continuous miners
Monorail systems supplying DCBs
Longwall mining equipment
Mobile and semi-mobile underground machinery
The “SF” (Super Flexible) designation indicates that conductor stranding and cable lay-up have been optimized for maximum flexibility, making this cable ideal for harsh underground mining conditions.
Why Does Type 241SF Offer Higher Flexibility Than Standard Type 241?
Unlike conventional medium-voltage mining cables, Type 241SF uses:
Fine-stranded tinned copper conductors
Modified stranding geometry
Optimised lay-up pitch
Elastomeric materials with superior elastic recovery
This design significantly reduces:
Bending stress during reeling and dragging
Internal conductor fatigue
Risk of insulation cracking under repeated movement
As a result, Type 241SF performs exceptionally well in arduous, high-movement mining environments.
How Do Different Type 241SF Voltage Ratings Compare?
Type 241SF Model Comparison (Simplified)
Model | Voltage Rating | Typical Use Case |
|---|---|---|
Type 241.1 SF | 1.1/1.1 kV | Pumps, auxiliary equipment |
Type 241.3 SF | 3.3/3.3 kV | Continuous miners, DCB supply |
Type 241.6 SF | 6.6/6.6 kV | Longwall systems |
Type 241.11 SF | 11/11 kV | Main underground feeders |
Higher voltage versions feature thicker insulation and reduced capacitance, making them suitable for longer transmission distances.
How Does Type 241SF Compare with Standard Type 241 or Type 240?
Feature | Type 241SF | Standard Type 241 | Type 240 |
|---|---|---|---|
Flexibility | ★★★★★ | ★★★★☆ | ★★★☆☆ |
Suitable for mobile equipment | Excellent | Good | Limited |
Mechanical abuse resistance | Heavy duty | Heavy duty | Moderate |
Typical applications | Longwalls, monorails | Feeders | Fixed installations |
Type 241SF is clearly preferred when movement and flexibility are key decision factors.
Where Is AS/NZS Type 241SF Used in South African Mines?
South African Case Study: Platinum Mine Longwall System
In a North West Province platinum mine, Type 241.6 SF (6.6 kV) cables were selected for a new longwall installation because:
Equipment required frequent repositioning
High moisture and abrasive dust were present
Previous standard cables suffered from premature sheath damage
Results after 24 months:
Reduced cable failures
Lower maintenance downtime
Improved safety compliance
This reflects a growing trend in South Africa toward AS/NZS-compliant super-flexible mining cables for high-movement zones.
What Are the Recommended Installation Conditions?
Can Type 241SF Be Installed in Multiple Environments?
Yes. It is suitable for:
Free-air installation
Duct installation
Mobile machinery
Fixed and semi-fixed underground equipment
Installation Best Practices
Maintain minimum bending radius during installation
Avoid torsional stress during reeling
Use cable cleats designed for flexible MV cables
Regularly inspect sheath condition in high-traffic areas
Frequently Asked Questions
Is AS/NZS 1802 Type 241SF fire-retardant?
Yes. The cable is fire retardant, meeting AS/NZS flame performance requirements for underground mining.
Can Type 241SF be used as a pump feeder cable?
Absolutely. It is commonly used as a medium-voltage feeder cable for underground and surface pump systems.
Does the cable withstand water immersion?
Yes. It is suitable for temporary water immersion, making it reliable in flooded or wet mine sections.
Is Type 241SF suitable for chemical exposure?
Yes. The PCP sheath offers very good resistance to oils, chemicals, and mining fluids.
How do I choose the correct conductor size?
Selection should be based on:
Load current
Voltage drop limits
Installation length
Short-circuit requirements
Feichun engineers can assist with cable sizing calculations.
Looking for a reliable, super-flexible AS/NZS 1802 Type 241SF mining cable tailored to your underground application?
👉 Contact Feichun Cable today for:
Technical datasheets
Cable sizing support
Project-specific recommendations
Export solutions for South Africa and Australia
Choose safety, flexibility, and long-term reliability underground.
Email: Li.wang@feichuncables.com
