UGF & UGEFP High-Voltage Open-Pit Mining Trailing Cable (3.6/6–6/10 kV)

UGF and UGEFP high-voltage mining trailing cables are designed for surface and open-pit mining machinery operating on 3.6/6 kV and 6/10 kV three-phase distribution networks.Dragged over blasted haul-road rock, wound onto mobile cable skids or guided over boom sheaves on electric rope shovels and large blast-hole drills, these cables combine medium-voltage dielectric integrity with extreme mechanical impact, abrasion and cold-bend resilience.

In the standard UGF construction (3+1 cores, 16 mm² to 150 mm²), three Class 5 flexible tinned-copper power cores are insulated with +90 °C ethylene-propylene rubber (EPR) between extruded inner and outer semiconductive elastomer screens, laid up around a semiconductive rubber center cradle with an uninsulated flexible tinned-copper earth conductor in direct contact with the three phase screens.

In the metallic-shielded UGEFP construction, each power core adds an individual tinned-copper wire and synthetic-fibre composite metallic shield over the outer semiconductive layer, providing enhanced fault-current capacity and electrostatic screening for long open-pit feeder runs and variable-frequency shovel drives. Standard and cold-climate formulations operate across ambient temperatures down to -40 °C while resisting solar UV, ozone, oil and acid pit water.

Provide the rated voltage (3.6/6 kV or 6/10 kV), model (UGF or UGEFP), conductor cross-section, minimum ambient site temperature and coupler requirement with your enquiry. TEBAOFLEX manufactures custom lengths from a 50 m minimum order quantity with a standard lead time of 7–45 working days.

Explore the mining and tunneling cable range for related configurations.

For North American ICEA S-75-381 and Chinese MT 818 medium-voltage mining trailing cables, compare these constructions: SHD-GC Cable 2kV-25kV Mining Power Cable (for 2 kV to 25 kV braided-copper-shielded portable power feeds on open-pit shovels and draglines); MYPTJ Monitored Medium-Voltage Mining Trailing Cable (3.6/6–8.7/10 kV) (for 3.6/6 kV to 8.7/10 kV underground coal mining trailing service with semi-conductive screening and ground monitoring). Confirm rated voltage, minimum ambient operating temperature (-25°C vs -40°C), and earth-check architecture before ordering.

Construction

The representative construction illustrates UGEFP 6/10 kV 3×70 + 1×25 mm²: three equal Class 5 flexible tinned-copper power cores with inner semiconductive screen, +90 °C EPR medium-voltage insulation, outer semiconductive screen and tinned-copper composite metallic shield, plus one flexible tinned-copper earth conductor in the interstitial valley, cabled around a semiconductive profile center and enclosed in a light-grey inner bedding, reinforcing braid and heavy-duty black cold- and weather-resistant chloroprene/CPE outer sheath.

Applications

Choose UGF for standard semiconductive-screened open-pit trailing service or UGEFP where individual metallic phase shielding is required by high-voltage earth-fault protection relays.

• Open-pit mining electric rope shovels, walking draglines and large hydraulic face shovels operating at 6 kV or 10 kV.
• High-voltage rotary blast-hole drill rigs, bucket-wheel excavators and mobile crusher units on surface mine benches.
• Mobile skid-mounted substations and open-pit ring-main trailing feeders dragged across rock benches and haul-road cable bridges.
• Cold-region surface mining operations down to -40 °C ambient temperature with minimum dynamic bending radius of 6 × D (UGF) to 10 × D (UGEFP).

When evaluating shielded high-voltage trailing cables for surface mines and quarries, consult these pages: What Does Type SHD Mean in Mining Cables? (for metallic shield construction, ground-check conductor placement, and voltage stress control principles); Type SHD-CGC 5 kV Shielded Portable Mining Power Cable (for 5 kV heavy-duty portable mining power feeds with a central ground-check conductor). Verify drag tension, rock impact exposure, and splice kit compatibility for your pit layout.

Specifications

Continuous ampacities are stated for +90 °C conductor temperature at +25 °C ambient air; apply ambient temperature and solar radiation derating for exposed summer bench runs.

When UGF or UGEFP cables are operated on multi-layer mobile cable reels, apply standard wound-layer ampacity derating factors.

Custom split-earth (3+3) or integrated pilot-core variants can be manufactured to project specification.

Standards

IEC 60502-2 Medium-Voltage Cable Standard Reference