NSHTOEU 0.6/1kV LHD Mining Reeling Cable

NSHTOEU Cable for Underground LHD Reeling Systems

NSHTOEU is a 0.6/1 kV LHD mining reeling cable for the dynamic power connection between an underground mine supply point and a mobile scoop loader. As the machine travels, the cable repeatedly winds onto and pays off the reel while its direction, bending condition and mechanical load change. The cable therefore combines flexible tinned-copper conductors with EPR insulation, a double 5GM5 PCP sheath system and an anti-torsion polyester braid.

The design is suitable for mono-spiral and cylindrical reels. A central support element can be incorporated where the selected construction requires additional mechanical support. This makes cable selection more than an electrical cross-section decision: the correct build must also match the reel geometry, cable pull, travel length and the way mechanical load is transferred at the machine.

Key Engineering Features

• Designed around LHD movement: The construction addresses frequent winding and unwinding on underground scoop loaders rather than treating the cable as a general fixed power lead.
• Flexible tinned-copper conductors: Fine stranding allows the cores to bend with the reel cycle, while tinning helps protect the conductor surface in damp mining conditions.
• EPR 3GI3 core insulation: The elastomeric insulation accommodates repeated flexing and electrically separates the four power cores inside the moving cable.
• Optional central support element: Mechanical load can be managed by a purpose-selected support construction instead of relying only on the electrical conductors. The support element and its termination must be matched as a system.
• Polyester anti-torsion braid: The reinforced braid is vulcanized between the inner and outer sheaths. It helps distribute torsional stress and stabilize the cable as it enters, leaves and reverses on the reel.
• PCP 5GM5 inner and outer sheaths: The two-sheath arrangement contains the reinforcement within a bonded rubber system and provides a mechanically coherent exterior for reel and guide contact.
• Defined installation envelope: Minimum and maximum overall diameters are supplied for every listed construction, helping engineers check drum grooves, guide rollers, cable entries and available reel capacity.

Technical Specifications

Cable Construction

1. Conductors: Four flexible stranded tinned-copper conductors carry power while accommodating the repeated bending imposed by the LHD reel.
2. Core insulation: Each conductor is insulated with EPR compound type 3GI3.
3. Central support: An optional support element may be positioned at the cable center according to the required construction and mechanical rating.
4. Inner sheath: PCP compound type 5GM5 forms the bedding beneath the reinforcement.
5. Anti-torsion reinforcement: A reinforced polyester-thread braid is incorporated in a vulcanized bond between the two sheath layers to manage twisting and stabilize the cable body.
6. Outer sheath: PCP compound type 5GM5 completes the cable and provides the surface that runs over the reel and guidance system.

Dimensions and Weight

The figures below reproduce the supplied size data. The kN value is retained as part of each listed construction designation. Confirm the applicable support-element rating, allowable working load, safety factor and termination method in the quotation before final selection.

The two 4 x 50 mm² entries are separate constructions with different listed support values, diameter ranges and cable weights. They should not be treated as interchangeable solely because the electrical cross-section is the same.

Applications

• Underground load-haul-dump machines
• Mine scoop loaders with onboard cable reels
• Mono-spiral LHD reel systems
• Cylindrical and multilayer reel arrangements, subject to reel-capacity and thermal checks
• Mobile underground equipment exposed to frequently changing dynamic cable loads

Selection Notes for Buyers

Start with the electrical duty. Select the conductor cross-section from the machine load current, motor starting condition, route length and permitted voltage drop. Then check the thermal condition of the actual reel. Cable stored in multiple energized layers generally dissipates heat less effectively than cable laid out in free air, so a current rating taken from an unrelated installation method should not be used without review.

Match the mechanical construction. Determine the maximum cable pull at full travel, reel orientation, acceleration, slope, cable hanging length and the method used to anchor the central support. Apply the project safety factor and confirm how the catalogue kN value is defined. The optional support element is not automatically present in every construction and should not be assumed from the model name alone.

Check reel fit with the complete diameter range. Use the maximum overall diameter for drum-groove, guide-roller, cable-entry and reel-capacity calculations. Use the minimum value when checking clamping and sealing hardware. For cylindrical reels, also specify the number of stored layers and whether the cable remains energized while wound.

Control installation variables. Confirm the minimum permissible bending radius, reel speed, travel distance, reversing frequency and fleet duty cycle with the offered datasheet. Avoid introducing twist while paying the cable off the shipping drum, align the first guide with the reel and keep the cable path free from sharp edges and crossovers.

Define the mine environment. State water, oil, hydraulic-fluid, abrasion, flame-performance and ambient-temperature requirements in the RFQ. The supplied data confirms the materials and VDE construction reference, but it does not state individual resistance test results or operating limits for these exposures.

Information to Include in an RFQ

• LHD manufacturer, machine model and supply voltage
• Full-load and starting current, route length and voltage-drop limit
• Required core size and preferred kN construction
• Mono-spiral or cylindrical reel, core diameter, groove dimensions and number of layers
• Maximum paid-out length, travel speed, acceleration and cycles per shift
• Maximum cable pull, slope and support-element termination arrangement
• Ambient temperature and exposure to water, oil, abrasion or mine chemicals
• Required production length, cable marking, test reports, packing and inspection documents