Type 61A Flexible Mining Trailing Cable 640/1100V Heavy-Duty Copper Screened Cable for Underground Mining Equipment

Product Overview

The Type 61A Flexible 640/1100V Cable is a heavy-duty trailing cable specifically engineered for underground mining environments in South Africa. Designed in accordance with SANS 1520-1, this cable ensures high reliability, enhanced safety, and long service life in hazardous and mechanically demanding conditions.

It is widely used for powering trackless mining equipment, shuttle cars, and other mobile electrical machinery, where flexibility and robustness are critical.

Key Features & Benefits

• Excellent Flexibility
  Designed with Class 5 finely stranded conductors for superior bending performance in confined mining spaces.

• Enhanced Mechanical Protection
  Heavy-duty TPU sheath provides outstanding resistance to abrasion, tearing, and impact.

• Flame Retardant Design
  Suitable for hazardous underground environments requiring strict fire safety compliance.

• Chemical & Environmental Resistance
  مقا Resistant to oil, UV radiation, ozone, and harsh mining atmospheres.

• High Electrical Reliability
  Copper braided screening ensures stable performance and electromagnetic protection.

Applicable Standards

This cable is manufactured in compliance with key South African standards:

• SANS 1520-1

• SANS 1411-1

• SANS 1411-3

• ICEA S-75-381 (Outer sheath performance requirements)

Construction Details

Conductors

• Material: Tinned annealed copper

• Class: Flexible Class 5 (as per SANS 1411-1)

• Stranding: Left-hand lay

Insulation

• Type: Ethylene Propylene Rubber (EPR), Type RD3

• Standard: SANS 1411-3

• Properties: उत्कृष्ट thermal stability and electrical insulation performance

Core Configuration

• 3 x Power Cores: Individually screened with tinned copper braid

• 3 x Pilot Cores: Unscreened, positioned in interstices

• Central Support: Semi-conductive cradle or rubber filler (RD1)

• Lay Direction: Right-hand lay

Screening

• Tinned copper braided screen

• Approx. filling factor: 80%

• Ensures shielding and fault protection

Outer Sheath

• Material: Extra heavy-duty TPU

• Standard: ICEA S-75-381 Table 3-3

• Colour: Transparent with orange/silver reflective tape

• Marking: Inkjet or embossed

Technical Characteristics

Dimensional & Electrical Data (Typical)

Applications in South African Mining

The Type 61A cable is ideal for:

• Underground coal and hard rock mines

• Trackless mobile machinery

• Electrically driven loaders and shuttle cars

• Hazardous and flame-risk environments

It is not recommended for reeling applications, where specialised reeling cables should be used.

Installation & Handling

• Minimum bending radius must be strictly observed to avoid internal damage

• Avoid torsional stress during installation

• Suitable for harsh underground conditions with high mechanical stress

• Standard drum length: 500 metres (custom lengths available on request)

Why Choose Type 61A Cable?

Compared to conventional mining cables, Type 61A offers:

• Higher durability under extreme mechanical stress

• Improved safety through flame retardant and screened design

• Longer operational lifespan in abrasive environments

• Compliance with South African mining regulations

Frequently Asked Questions (FAQ)

Q1: What makes Type 61A different from Type 41 mining cables?

Type 61A includes screened power cores, providing better electrical protection and suitability for more demanding applications.

Q2: Can this cable be used for reeling systems?

No. Type 61A is designed for trailing applications only. Reeling requires specialised drum cables.

Q3: Is the cable suitable for outdoor mining environments?

Yes. The TPU sheath ensures resistance to UV, ozone, and moisture.

Q4: What ensures safety in hazardous mining areas?

Flame retardant materials, copper screening, and compliance with SANS 1520-1 ensure high safety standards.