AS/NZS 1802 Type 241SF 1.1-11 kV Flexible Mining Power Cable – Semiconductive Screened Heavy-Duty Trailing Cable for Continuous Miners, Pumps, Monorails & Longwall Systems
Overview of AS/NZS 1802 Type 241SF Cable
The AS/NZS 1802 Type 241SF 1.1-11 kV cable is a highly flexible, semiconductive screened mining power cable engineered for demanding underground mining and mobile equipment applications. Designed in accordance with the Australian and New Zealand mining cable standard AS/NZS 1802, this cable is optimized for continuous flexing, heavy mechanical stress, and harsh operating environments.
Type 241SF cables are widely used as:
Continuous miner trailing cables
Feeder cables for dewatering pumps
Monorail power supply cables for DCB systems
Longwall mining equipment power cables
Flexible mobile mining machine connections
The specially modified conductor stranding and cable lay-up structure provide exceptional flexibility and durability under arduous mining conditions where repeated bending, dragging, torsion, and mechanical impact are common.
Key Features of Type 241SF 1.1-11 kV Cable
Manufactured to AS/NZS 1802
Voltage grades from 1.1/1.1 kV up to 11/11 kV
Extremely flexible construction for mining applications
Semiconductive screened EPR insulated power cores
Heavy-duty reinforced PCP outer sheath
Excellent resistance to chemicals, water, abrasion, and weather
Suitable for direct sunlight exposure
Designed for mobile mining machinery
Fire retardant construction
Flexible tinned copper conductors
Three earth conductors plus extensible pilot core
Reliable performance under heavy mechanical impact
Applications
The Type 241SF mining cable is specifically designed for underground and surface mining operations requiring high flexibility and robust mechanical protection.
Typical applications include:
Continuous miners
Shuttle cars
Longwall systems
Monorail systems
Underground pumps
Mobile mining equipment
Feeder circuits
Portable substations
Mining machinery power distribution
Its highly flexible design makes it ideal for repeated reeling, dragging, and flexing in confined underground mining environments.
Standards & Compliance
Standard | Description |
|---|---|
AS/NZS 1802 | Reeling and trailing cables for mining applications |
Fire Retardant | Flame retardant construction |
Construction Details of AS/NZS 1802 Type 241SF Cable
1. Power Conductors
Flexible tinned copper conductors
Three power cores
Optimized stranding for maximum flexibility
The use of tinned copper improves corrosion resistance in humid underground mining environments.
2. Conductor Separator Tape
1.1/1.1 kV Versions
Polyester separator tape where required
3.3 kV and Above
Semiconductive conductor screen
The semiconductive screening system ensures improved electric field control and enhanced insulation reliability at medium voltage levels.
3. Insulation System
The power cores are insulated with:
EPR (R-EP-90) elastomer insulation
Black semiconductive insulation screen
Durable printed core identification markings at intervals less than 300 mm
Advantages of EPR Insulation
Excellent flexibility
High thermal endurance
Superior moisture resistance
Outstanding electrical performance
Enhanced resistance to mining environments
4. Semiconductive Screen
Each power core includes a semiconductive elastomer screen designed to:
Control electrical stress
Reduce partial discharge risk
Improve operational safety
Enhance medium voltage performance
5. Earth Conductors
The cable contains:
Three flexible earth conductors
Semiconductive elastomer covering
Located in cable interstices
Maximum DC Resistance
Power Core Size | Maximum DC Resistance |
|---|---|
Up to 35 mm² | 5.5 Ω/100 m |
Above 35 mm² | 3 Ω/100 m |
6. Pilot Core
Single extensible pilot conductor
Centrally positioned within cable structure
The pilot core is used for monitoring, grounding continuity, and mining safety control systems.
7. Outer Sheath Construction
The outer sheath consists of:
Open weave reinforcement layer
Heavy-duty HD-85-PCP sheath
Sheath Characteristics
High abrasion resistance
Excellent cut resistance
Superior mechanical protection
Water resistant
Chemical resistant
Flexible under low temperatures
Environmental & Mechanical Performance
Property | Performance |
|---|---|
Maximum operating temperature | +90°C |
Minimum operating temperature | -25°C |
Chemical resistance | Very good |
Water resistance | Immersion / temporary coverage |
Mechanical impact resistance | Heavy duty |
UV & weather resistance | Suitable for direct exposure |
Flexibility | Very flexible |
Flame performance | Fire retardant |
Installation Conditions
The cable is suitable for installation in:
Free air
Underground mining ducts
Mobile mining equipment
Mining machines
Longwall systems
Continuous mining systems
Why Choose Type 241SF Flexible Mining Cable?
The AS/NZS 1802 Type 241SF cable combines:
High flexibility
Excellent electrical reliability
Strong mechanical protection
Long service life
Superior mining performance
Its semiconductive screened EPR insulated construction makes it highly suitable for medium-voltage mining power distribution systems where flexibility, safety, and durability are critical.
The reinforced PCP sheath and flexible tinned copper conductors ensure reliable operation under continuous movement, dragging, impact, moisture exposure, and abrasive mining conditions.
Typical Mining Industries Using Type 241SF Cable
Underground coal mining
Hard rock mining
Longwall mining operations
Mineral processing plants
Conveyor systems
Mobile mining machinery
Pumping stations
Tunnel boring operations
Heavy industrial mobile equipment
