Type 63 Flexible Copper Screened Mining Cable

Mining Cables
Description

Product Overview

The Type 63 Flexible Copper Screened Mining Cable is a heavy-duty, flame-retardant trailing cable designed for electrically driven machines and movable apparatus in hazardous mining areas. Featuring tinned copper braided screens on power cores and flexible class 5 conductors, it meets SANS 1520-2 standards. Ideal for reeling applications on stackers, shearers, and conveyor systems, this cable delivers excellent flexibility, abrasion resistance, and reliability in harsh environments.

Applications

  • Electrically driven machines in hazardous areas

  • Movable electric apparatus

  • Stackers, shearers, conveyor systems

  • Suitable for reeling purposes

  • Other industrial applications requiring flexible screened power cores

Standards & Approvals

  • Design standard: SANS 1520-2

  • Conductor: SANS 1411-1 – flexible class 5 tinned annealed copper

  • Insulation & sheath: SANS 1411-3 – thermosetting compounds (RD3 and RS6)

Key Characteristics

Property Performance
Temperature range Minimum ambient: –25 °C
Maximum conductor: +90 °C
Flexibility Excellent
Mechanical resistance Abrasion resistant, tear resistant
Flame behaviour Flame retardant
Environmental UV, sunlight, ozone, and oil resistant

Cable Construction

  1. Conductor
    Flexible class 5 tinned annealed copper wires, left-hand lay, complying with SANS 1411-1.

  2. Insulation
    Ethylene propylene thermosetting compound type RD3 (SANS 1411-3).

  3. Insulation screen
    Braid of tinned copper wires over each power core.

  4. Cable assembly
    Three tinned copper braided screened power cores + three unscreened pilot cores (one in each interstice) laid up right-hand around a semi-conductive cradle centre.

  5. Internal sheath
    Poly-chloroprene thermosetting compound type RS6 (SANS 1411-3).

  6. Reinforcing braid
    Open nylon braid (minimum 16 nylon strings).

  7. Outer sheath
    Poly-chloroprene thermosetting compound type RS6 (SANS 1411-3).
    Inner and outer sheath are bonded to provide proper torsional protection.
    Colour: Black.

Physical Properties

Power Core Size (mm²) 25 35 50* 70 95 120 150 185 240
Maximum wire diameter (mm) 0.41 0.41 0.41 0.51 0.51 0.51 0.51 0.51 0.51
Approximate conductor diameter (mm) 6.8 8.5 10.3 11.9 13.5 15.5 17.3 20.2 22.9
Maximum screen wire diameter (mm) 0.31 0.31 0.31 0.31 0.31 0.31 0.31 0.31 0.31
Braided screen filling factor (%) 80 80 80 80 80 80 80 80 80
Approx. summarized screen cross-section for power cores (weighing method) (mm²) 31 33 38 42 47 50 55 60 64
Pilot Core Size (mm²) 10 10 10 16 16 16 25 25 25
Maximum wire diameter (mm) 0.41 0.41 0.41 0.41 0.41 0.41 0.41 0.41 0.41
Approximate conductor diameter (mm) 4.2 4.2 5.3 5.3 5.3 5.3 6.8 6.8 6.8
Lay ratio (maximum) (x PCD) 8 8 8 8 8 8 8 8 8
Cable Parameters
Approx. overall diameter (mm) 44 48 50.5 56 61 63 66 72 78
Approx. cable mass (kg/m) 3.6 4.2 4.2 6.4 7.7 8.5 10.5 11.4 14.0
Minimum bending radius (mm) 280 290 310 350 370 380 400 440 480
Maximum recommended tension (kN) 1.1 1.6 2.3 3.2 4.3 5.4 6.8 8.3 10.8

Electrical Properties (Power Cores)

Parameter 25 35 50* 70 95 120 150 185 240
Max. conductor DC resistance at 20 °C (Ω/km) 0.859 0.610 0.424 0.299 0.227 0.177 0.143 0.117 0.0882
Max. conductor DC resistance at 90 °C (Ω/km) 1.10 0.778 0.542 0.382 0.290 0.227 0.183 0.150 0.115
Reactance (Ω/km) 0.122 0.113 0.107 0.103 0.090 0.088 0.085 0.084 0.083
Impedance (Z) at 90 °C (Ω/km) 1.11 0.786 0.552 0.396 0.304 0.243 0.202 0.172 0.142
Sustained current rating at 30 °C ambient (laid out straight) (A) 130 160 200 245 295 345 390 440 520
Short circuit rating – symmetrical fault current (kA for 1 sec) 3.1 4.3 6.1 8.5 11.6 14.6 18.3 23 29
Earth fault current – screens (kA for 1 sec) 1.6 2.1 3.1 3.5 4.1 4.1 4.1 4.1 4.1

Note: 50 indicates a preferred size.*

Specifications at a Glance

  • Voltage rating: Not specified (typical mining trailing cable voltages apply)

  • Conductor operating temperature: 90 °C

  • Cold resistance: –25 °C ambient

  • Flame retardant: Yes

  • Oil resistance: Yes

  • UV resistance: Yes

  • Outer jacket colour: Black