Product Overview
The Type 245 series mining cable is a highly flexible power and control cable specifically engineered for the most demanding underground coal mining applications. These very flexible cables are primarily used as longwall shearer cables, and are also suitable for continuous miners and peripheral longwall equipment. The cable features three central pilot cores designed for earth continuity monitoring and control circuits, ensuring operational safety and reliable communication in critical mining environments. Manufactured to stringent Australian/New Zealand standards, this cable delivers exceptional performance and durability.
Standards
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AS/NZS 1802:2003 – Electric cables – Reeling and trailing – For mining and general use (AS/NZS 1802)
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AS/NZS 1125 – Conductors in insulated electric cables and flexible cords
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AS/NZS 3808 – Insulating and sheathing materials for electric cables
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AS/NZS 5000.1 – Electric cables – Polymeric insulated – For working voltages up to and including 0.6/1 (1.2) kV
Applications
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Longwall shearer cables (primary application)
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Continuous miners and peripheral longwall equipment
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Other mining applications requiring ultra-flexible cables with integral pilot cores for monitoring
Specifications
| Parameter | Details |
|---|---|
| Voltage Rating | 1.1 kV to 6.6 kV (depending on construction) |
| Low Voltage | Yes (for 1.1 kV variants) |
| Medium Voltage | Yes (for 3.3 kV and above) |
| Conductor | Flexible stranded tinned annealed copper |
| Insulation | Ethylene Propylene Rubber (EPR) |
| Sheath | Heavy duty Polychloroprene (PCP) |
| Standards | AS/NZS 1802:2003, AS/NZS 1125, AS/NZS 3808, AS/NZS 5000.1 |
Construction
The Type 245 cable features a sophisticated multi-component design engineered for extreme flexibility and durability in longwall mining applications:
| Component | Description |
|---|---|
| Power Conductors (3×) | Flexible stranded tinned annealed copper conductors. |
| Conductor Screen | – 1.1/1.1 kV: Polyester barrier tape. – 3.3/3.3 kV and above: Polyester barrier tape plus extruded semi-conductive tape. |
| Insulation | Ethylene Propylene Rubber (EPR). |
| Insulation Screen | Semi-conductive tape applied over insulation. |
| Cradle Separator | Semi-conductive Polychloroprene (PCP) profiled filler to separate and cushion cores. |
| Overall Core Screen | Semi-conductive PCP filling and covering over the assembled cores. |
| Interstitial Earth Conductors (3×) | Semi-conductive PCP insulated flexible stranded tinned copper conductors (located in interstices between power cores). |
| Central Extensible Pilots (3×) | EPR insulated flexible stranded tinned copper conductors (for earth continuity monitoring and control circuits). |
| Textile Reinforcement | Open-weave braid reinforcement for enhanced mechanical strength and flexibility. |
| Sheath | Heavy duty Polychloroprene (PCP) sheath, providing excellent abrasion, oil, and flame resistance. |
Key Features
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Ultra-Flexible Design: Engineered for continuous flexing and movement in longwall shearer applications.
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Triple Pilot Core Configuration: Three central pilot cores enable earth continuity monitoring and control circuit functionality, enhancing operational safety.
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Comprehensive Screening: Multiple screening layers (tape, extruded semi-con, overall core screen) provide effective electrical protection.
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Robust Earth System: Three interstitial earth conductors ensure reliable grounding.
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Textile Reinforcement: Open-weave braid reinforcement adds mechanical strength while maintaining flexibility.
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Heavy-Duty Sheath: PCP sheath offers outstanding resistance to abrasion, oil, flame, and harsh underground conditions.
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AS/NZS Compliance: Fully tested and certified to AS/NZS 1802 and related standards, guaranteeing safety and reliability in mining applications.
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Versatile Voltage Range: Available in various voltage ratings from 1.1 kV up to 6.6 kV to suit different longwall equipment requirements.