Type 260 Reeling Cable | High-Voltage | AS/NZS 2802 | IECEx Certified | Open-Cut Mining Power
Anhui Feichun Special Cable Co., Ltd. supplies Type 260 high-voltage reeling cable for open-cut mining power systems where mobile machinery requires safe, flexible, screened and mechanically reinforced electrical supply under continuous winding, unwinding, dragging, bending and tensile stress. Designed for heavy mining equipment such as draglines, electric shovels, blast-hole drills, stackers, reclaimers, mobile substations and cable reelers, Type 260 cable combines medium-voltage insulation performance, earth/pilot protection logic, dynamic reeling endurance and project-level IECEx documentation support.
1. Type 260 Reeling Cable for Open-Cut Mining Power
Type 260 reeling cable is engineered for one of the most demanding power supply duties in mining: high-voltage electrical feeding of mobile open-cut machinery through a cable reel system. Unlike fixed power cables, a reeling cable must operate while being repeatedly wound onto drums, unwound under load, dragged across rough ground, exposed to sunlight, water, coal dust, oil contamination and mechanical impact, and subjected to bending cycles that can continue throughout the entire service life of the machine.
In open-cut mining, cable failure is not simply an electrical problem. It can stop a dragline, shovel, drill or stacker, interrupt production, create safety risks, damage expensive power equipment and require emergency maintenance in harsh field conditions. For this reason, Type 260 cable is specified not only by voltage and conductor size, but also by reeling behaviour, tensile loading, torsional stability, sheath durability, screen continuity, pilot-core integrity and compatibility with mine protection systems.
Engineering definition: Type 260 is a high-voltage, flexible, screened mining reeling cable designed for mobile open-cut mining power supply. Its value lies in the combination of medium-voltage electrical insulation, dynamic reeling flexibility, earth/pilot protection, robust sheath performance and documentation suitable for regulated mining environments.
1.1. Typical Open-Cut Mining Equipment
| Equipment | Power Supply Challenge | Type 260 Cable Function |
|---|---|---|
| Draglines | Long cable runs, high voltage, repeated movement, large reel systems | High-voltage flexible reeling power cable with protective earth/pilot logic |
| Electric rope shovels | Frequent relocation, bending, abrasion and tensile shock | Dynamic cable design for mobile shovel feeding circuits |
| Blast-hole drills | Repeated advance, cable handling, impact and rough terrain exposure | Screened mining cable for reliable high-voltage mobile supply |
| Stackers and reclaimers | Continuous movement and cable reel operation over long periods | Reeling cable with mechanical stability and sheath endurance |
| Mobile substations | Temporary high-voltage feeding and site relocation | Flexible feeder connection with project-specific voltage and protection review |
2. AS/NZS 2802 and IECEx Certified Mining Cable Positioning
Type 260 cable is positioned under the AS/NZS 2802 mining cable framework, which is used for reeling and trailing electric cables in mining and heavy-duty applications. For high-voltage open-cut operations, the standard reference is only the starting point. The final cable must also be matched to equipment design, reel dimensions, voltage class, short-circuit level, protection relay settings, earth continuity monitoring method, installation route and mine electrical rules.
The phrase IECEx Certified should be understood as a controlled technical statement. In mining projects, IECEx relevance may apply to the cable, cable assembly, couplers, glands, termination systems, junction boxes, accessories or the complete installed electrical system depending on the hazardous-area classification and certification scope. Therefore, the actual IECEx Certificate of Conformity, marking, equipment group, temperature class, accessory compatibility and installation restrictions should always be verified during project approval.
Certification Scope Notice
“IECEx Certified” should be supported by the actual IECEx certificate number, product scope, cable assembly details, accessory list and installation method. Feichun can prepare project documentation for technical review, but final acceptance should be based on the mine operator, authority, EPC and OEM requirements.
2.1. Recommended Specification Wording
For professional procurement and engineering documents, Type 260 can be described as:
“Type 260 high-voltage reeling cable to AS/NZS 2802, suitable for open-cut mining mobile equipment power supply, with screened power cores, earth and pilot continuity protection, EPR insulation system, heavy-duty elastomeric outer sheath, dynamic reeling capability, and IECEx-certified documentation where required by the project hazardous-area classification.”
3. Type 260 Cable Construction: Electrical Safety Meets Reeling Endurance
Type 260 cable construction must balance two engineering demands that often compete with each other. First, the cable must provide high-voltage electrical performance through stable insulation, screen design and earth fault control. Second, it must remain flexible and mechanically reliable under reeling, bending, torsion, pulling and abrasion. Feichun therefore treats Type 260 as a complete cable system rather than a collection of separate layers.
3.1. Typical Type 260 Technical Parameters
| Parameter | Typical Specification | Engineering Purpose |
|---|---|---|
| Standard | AS/NZS 2802 project framework | Mining reeling and trailing cable construction reference |
| Rated voltage | Commonly 3.3/3.3kV, 6.6/6.6kV, 11/11kV, 22/22kV | Determines insulation thickness, screen design and test level |
| Power cores | Three screened power cores | Three-phase high-voltage power transmission |
| Conductor material | Flexible stranded tinned copper | Current capacity, bending endurance and corrosion resistance |
| Insulation | EPR / high-grade elastomeric insulation | Medium-voltage dielectric strength and dynamic flexibility |
| Screen system | Semiconductive conductor and insulation screens with metallic/composite screen design | Electric field control and safer fault response |
| Earth conductors | Project-specific earth-core arrangement | Protective grounding and earth fault current path |
| Pilot / control core | Project-specific pilot core or pilot/control core arrangement | Earth-continuity monitoring and interlock circuits |
| Outer sheath | Heavy-duty PCP, CPE, CSP or equivalent mining elastomer | Abrasion, oil, water, UV, flame and mechanical protection |
| Service environment | Open-cut mining, mobile equipment, cable reel systems | Designed for repeated winding, unwinding, dragging and bending |
4. High-Voltage Rating, Earth Monitoring and Pilot-Core Protection
High-voltage reeling cable selection must be based on the complete electrical system. The rated voltage must match the mine distribution network, but it must also be coordinated with voltage drop, load current, fault level, cable length, ambient temperature, reel thermal behaviour and protection-device settings. A cable that is electrically suitable in free air may behave differently when part of the length is wound on a reel, because heat dissipation changes and cyclic mechanical stress increases.
4.1. Common Voltage Classes
| Voltage Class | Typical Open-Cut Application | Design Consideration |
|---|---|---|
| 3.3/3.3kV | Medium mobile mining equipment and auxiliary high-voltage circuits | Balance between manageable cable size and medium-voltage performance |
| 6.6/6.6kV | Shovels, drills, mobile substations and larger equipment feeders | Requires robust screening, insulation control and protection coordination |
| 11/11kV | Large mobile mining machinery and longer feeder distances | Voltage drop, reel thermal condition and fault level become more critical |
| 22/22kV | Heavy open-cut mining distribution and high-power mobile equipment | Requires detailed engineering review of insulation, termination and protection system |
4.2. Earth and Pilot System Function
In a Type 260 reeling cable, the earth and pilot system is a safety-critical part of the design. The earth conductors provide a protective grounding path, while the pilot or control core arrangement can be used by the mine’s protection system to confirm cable continuity, coupler status, machine connection and safe energization conditions. If the pilot loop becomes open, damaged or outside the permitted resistance range, the protection system can be designed to trip or prevent energization.
This is especially important for mobile open-cut equipment because cable damage may occur during movement, reeling, dragging or accidental contact with vehicles and ground structures. The pilot system does not replace inspection, correct handling or maintenance. It is one part of a wider protection architecture that includes earth fault protection, relays, couplers, terminations, repair procedures and authorized testing.
Feichun Engineering Advantage
Feichun Type 260 cable can be engineered with high-voltage screened power cores, earth/pilot protection compatibility, heavy-duty elastomeric sheathing, optional reinforcement and documentation support for open-cut mining projects requiring AS/NZS 2802 and IECEx review.
5. Reeling Performance: Bending, Torsion, Tensile Load and Sheath Survival
The defining difference between Type 260 and ordinary high-voltage cable is dynamic reeling capability. During operation, the cable is wound and unwound across drums, rollers, guide systems and field surfaces. This creates bending stress, compression, torsion, side-wall pressure, tensile load and sheath abrasion. A professional Type 260 design must control all of these factors at the same time.
| Mechanical Stress | Field Cause | Possible Failure | Design Response |
|---|---|---|---|
| Repeated bending | Continuous reel winding and unwinding | Conductor fatigue, insulation interface stress | Flexible conductor design and elastic insulation system |
| Torsion | Misaligned reel, turning equipment, uneven ground | Core deformation, screen damage, pilot instability | Balanced core lay-up and controlled cable geometry |
| Tensile shock | Cable snagging, sudden machine movement, reel tension | Conductor stretch, pilot-core breakage, sheath tearing | Reinforcement review and correct pulling-tension limits |
| Abrasion | Ground dragging, rock, coal, steel edges, rollers | Outer sheath wear-through and moisture ingress | Heavy-duty mining elastomer sheath |
| Thermal build-up | Current load while part of cable remains on reel | Insulation ageing and reduced service life | Ampacity review for reeled and unreeled conditions |
5.1. Reel System Compatibility
Cable performance depends heavily on the reel system. Drum diameter, flange design, winding tension, fleet angle, roller condition, level-wind mechanism, cable guide alignment and reel control logic all affect cable life. Even a correctly manufactured Type 260 cable can fail early if the reel applies excessive tension, creates sharp bending, twists the cable or damages the sheath during winding.
5.2. Minimum Bend Radius and Installation Control
The minimum bend radius must be defined according to the final cable diameter, voltage class, construction, reinforcement design and OEM equipment requirement. During installation and operation, the cable should not be bent below the specified limit, crushed under machine parts, dragged over sharp surfaces or stored with torsional memory. Feichun recommends that reel drawings, cable routing and handling methods be reviewed before final cable approval.
Quality Assurance6. Testing, Documentation and Project Delivery
Type 260 cable for open-cut mining should be supplied with a complete quality and documentation package. This is especially important for high-voltage and IECEx-related projects, where the cable becomes part of a regulated electrical safety system. Feichun can support project teams with construction drawings, datasheets, factory test reports, standard mapping, certification review and packaging suitable for large-drum mining cable delivery.
6.1. Recommended Factory Test and Inspection Items
- Conductor resistance test: verifies copper size, electrical loss and conductor conformity.
- High-voltage withstand test: confirms insulation integrity under specified voltage test conditions.
- Insulation resistance test: checks dielectric cleanliness and moisture-related risk.
- Screen continuity test: verifies the integrity of metallic or composite screen systems.
- Earth and pilot continuity test: confirms protection-circuit compatibility before dispatch.
- Dimensional inspection: verifies conductor size, insulation thickness, sheath thickness and overall diameter.
- Sheath inspection: checks surface quality, marking, colour, compound consistency and mechanical protection.
- Drum and packing inspection: ensures safe delivery for heavy high-voltage mining cable lengths.
6.2. Project Data Required for Accurate Type 260 Selection
| Required Data | Why It Matters |
|---|---|
| Rated voltage and system earthing method | Determines insulation, screen, test voltage and protection coordination |
| Equipment type and power demand | Determines conductor size, current rating and voltage drop |
| Cable reel drum diameter and winding pattern | Determines bending stress, torsion risk and expected cable life |
| Cable length and reeled operating condition | Impacts voltage drop, thermal performance and pilot-loop resistance |
| Earth/pilot protection system | Determines earth conductor and pilot/control core requirements |
| Site environment | Controls sheath compound choice for oil, UV, water, abrasion and flame performance |
| IECEx or hazardous-area requirement | Determines certificate scope, marking, accessories and installation limitations |
7. Conclusion: High-Voltage Reeling Cable for Critical Open-Cut Mining Power
Type 260 Reeling Cable is a high-performance mining power cable designed for mobile open-cut operations where high voltage, mechanical movement, reeling duty and electrical protection must operate together. Its core value is not limited to conductor size or voltage rating. The complete cable system must maintain insulation integrity, screen continuity, earth fault protection, pilot-loop reliability, sheath durability and mechanical stability across repeated winding and unwinding cycles.
Feichun Type 260 cable supports open-cut mining operators, OEM equipment manufacturers, EPC contractors and electrical maintenance teams with a robust cable platform for draglines, shovels, drills, stackers, reclaimers, mobile substations and other high-voltage mining equipment. With AS/NZS 2802 construction alignment, IECEx certification support, earth/pilot monitoring compatibility and heavy-duty reeling performance, Type 260 is an engineering-grade solution for safe and reliable open-cut mining power supply.
