Introduction to AS/NZS 1802 Type 241 Cable

The AS/NZS 1802 Type 241 cable is a heavy-duty flexible mining and industrial power cable specifically engineered for harsh mobile equipment applications in underground and surface mining environments. Designed with semiconductive elastomer screened power cores, this cable provides reliable electrical performance, superior flexibility, and excellent resistance to mechanical stress, moisture, chemicals, and flame propagation.

Type 241 cables are widely used in:

• Continuous miners

• Longwall mining systems

• Monorail power supply systems

• Feeder cables for pumps

• Distribution control boxes (DCBs)

• Mobile mining machinery

• Heavy-duty trailing and reeling applications

Unlike metallic screened mining cables, the Type 241 design utilizes a semiconductive screen, allowing enhanced flexibility for dynamic mining applications where repeated movement, bending, and vibration are common.

Key Features of AS/NZS 1802 Type 241 Cable

Flexible Semiconductive Screened Construction

The cable uses semiconductive elastomer screens around the insulated power cores, providing:

• Improved flexibility

• Reduced cable stiffness

• Enhanced mechanical durability

• Better suitability for trailing applications

Heavy-Duty Mining Performance

Designed for severe mining conditions, the cable offers:

• Heavy mechanical impact resistance

• Excellent abrasion resistance

• Strong resistance to chemicals and oils

• Temporary immersion capability

• Weather and UV resistance

Flame Retardant Design

The cable complies with AS/NZS 1802 flame retardant requirements, helping improve safety in underground mining operations.

Wide Voltage Range

Available from:

• 1.1/1.1 kV

• 3.3/3.3 kV

• 6.35/6.35 kV

• 11/11 kV

This makes Type 241 suitable for both low-voltage and medium-voltage mining power systems.

Applications of Type 241 Mining Cable

Continuous Miners

Type 241 cables are commonly used as trailing cables for continuous miners due to their flexibility and durability under repeated movement and mechanical stress.

Pump Feeder Cables

The cable provides reliable power delivery to underground pumps operating in wet and demanding environments.

Longwall Mining Systems

In longwall mining operations, Type 241 cables are often used for:

• Distribution control boxes (DCBs)

• Mobile power systems

• Shearer support equipment

Monorail Systems

The flexible semiconductive screened construction makes the cable ideal for monorail applications where repeated bending and movement occur.

AS/NZS 1802 Type 241 Cable Construction

Conductor

• Flexible tinned copper conductor

• Three power cores

• Three earth conductors

• Central extensible pilot conductor

The tinned copper construction improves corrosion resistance in humid and chemically aggressive mining environments.

Conductor Separator Tape

1.1/1.1 kV Versions

• Polyester separator tape where necessary

3.3 kV and Above

• Semiconductive conductor screen

This improves electric field control and insulation reliability in medium-voltage applications.

Insulation

EPR (R-EP-90) Elastomer Insulation

The insulation system uses high-performance Ethylene Propylene Rubber (EPR) with:

• 90°C continuous operating temperature

• Excellent flexibility

• Moisture resistance

• Mechanical toughness

• Electrical stability

The insulated cores feature durable printed core numbers at intervals less than 300 mm for easier identification.

Semiconductive Insulation Screen

Each power core is surrounded by a black semiconductive insulation screen that:

• Improves electrical stress distribution

• Enhances insulation integrity

• Reduces partial discharge risks

• Supports medium-voltage operation

Earth Conductors

The cable contains:

• Three flexible earth conductors

• Semiconductive elastomer covering

• Located within cable interstices

This configuration improves grounding reliability and mechanical balance.

Pilot Core

A single extensible pilot core is located centrally within the cable structure for monitoring and control functions in mining systems.

Reinforcement Layer

An open weave reinforcement layer is installed beneath the outer sheath to improve:

• Tensile strength

• Mechanical protection

• Resistance to tearing

• Flex life under trailing conditions

Outer Sheath

Heavy Duty HD-85-PCP Sheath

The outer sheath uses heavy-duty PCP material providing:

• Excellent abrasion resistance

• Oil and chemical resistance

• UV resistance

• Flame retardance

• Mechanical toughness

Technical Characteristics of Type 241 Cable

Installation Conditions

Type 241 cable is suitable for installation in:

• Free air

• Underground mining operations

• Cable ducts

• Mobile mining equipment

• Heavy industrial machinery

Electrical Performance of Type 241 Cable

Maximum DC Resistance

Power Cores up to 35 mm²

• Maximum: 5.5 Ω/100 m

Power Cores Above 35 mm²

• Maximum: 3 Ω/100 m

These low resistance values help reduce power loss and improve operational efficiency.

Advantages of Semiconductive Screened Mining Cables

Compared with metallic screened mining cables, semiconductive screened designs offer:

• Greater flexibility

• Reduced bending stiffness

• Improved trailing performance

• Better fatigue resistance

• Lower risk of screen cracking during movement

This makes Type 241 particularly suitable for dynamic mining machinery.

Why Type 241 Cable Is Widely Used in Mining

Mining operations require cables that can survive:

• Constant flexing

• Harsh mechanical abuse

• Mud and water exposure

• Oil contamination

• Abrasion

• Impact loading

• UV and weather exposure

AS/NZS 1802 Type 241 cable is specifically engineered to handle these conditions while maintaining electrical reliability and operational safety.

The AS/NZS 1802 Type 241 1.1kV–11kV Flexible Semiconductive Screened Mining Cable is a proven heavy-duty power cable solution for demanding mining and industrial applications. Its flexible semiconductive screened design, robust EPR insulation system, heavy-duty PCP sheath, and excellent resistance characteristics make it ideal for continuous miners, pumps, monorails, and longwall systems.

With voltage ratings up to 11kV and conductor sizes up to 300 mm², Type 241 cable delivers reliable power transmission, long service life, and dependable performance in the most demanding underground mining environments.