Type SHD-GC 25kV Three-Conductor Round Portable Power Cable TPU Jacket for Heavy Mobile Equipment

What Is Feichun Type SHD-GC 25kV Cable and Where Is It Typically Used?

Type SHD-GC 25kV is a heavy-duty, medium-voltage portable power cable designed for supplying electricity to large, continuously moving mining equipment.

Typical application environments include:

• Open-pit and underground mines

• High-power mobile equipment zones

• Areas exposed to abrasion, oil, moisture, UV, and mechanical stress

Typical equipment powered by SHD-GC 25kV:

• Draglines

• Electric shovels

• Dredges

• Rotary and down-the-hole drills

• Mobile power feeders

The 25kV voltage rating allows efficient long-distance power transmission while minimizing current and conductor losses—critical in large mining operations.

How Is a Type SHD-GC 25kV Portable Power Cable Constructed?

The performance of SHD-GC cables comes directly from their multi-layer, function-driven construction, optimized for electrical safety and mechanical durability.

What Kind of Conductor Does SHD-GC 25kV Use?

• Stranded annealed tinned copper

• High strand count improves flexibility

• Tin coating enhances corrosion resistance in humid and chemically aggressive environments

This conductor design is especially important for constant bending and dragging conditions.

Why Is a Conductor Shield Necessary in 25kV Cables?

A conducting layer is applied over each conductor to:

• Smooth the electrical field

• Reduce partial discharge

• Extend insulation life at high voltage levels

This is a critical safety feature for 25kV-class mining cables.

What Makes EPR Insulation Suitable for SHD-GC 25kV?

The insulation material is Ethylene Propylene Rubber (EPR), chosen because it offers:

• Excellent dielectric strength

• High resistance to thermal aging

• Flexibility at low temperatures

• Stable performance up to 90°C conductor temperature

EPR is widely recognized as the preferred insulation for portable MV mining cables.

How Do Insulation Shielding and Grounding Improve Safety?

The insulation shielding system consists of:

• Conducting tape

• Tinned copper or textile braid

Together with:

• Grounding conductor (tinned copper)

• Ground check conductor (yellow polypropylene insulated)

This design ensures:

• Reliable grounding continuity

• Compatibility with ground-check monitoring systems

• Compliance with ICEA and CSA mining safety practices

Why Choose a TPU Jacket for Heavy Mobile Equipment?

What Advantages Does a TPU Jacket Offer Over CPE or PVC?

The outer jacket of this SHD-GC cable is Thermoplastic Polyurethane (TPU), which provides:

• Outstanding abrasion resistance

• High tear and cut resistance

• Excellent oil, grease, and chemical resistance

• Superior flexibility compared to CPE

• Long service life under dragging and crushing loads

This makes TPU particularly suitable for heavy mobile equipment with frequent relocation.

Optional Jacket Configurations

Feichun also offers:

• Alternative jackets: CPE, CSP, PCP, NBR, PVC

• Two-layer jackets with reinforcing fiber for extreme mechanical abuse

Where Is SHD-GC 25kV Used in South Africa?

South African Case Study: Open-Pit Mining Operation (Northern Cape)

A large open-pit mining site in South Africa required:

• Long-distance 25kV power supply

• Continuous relocation of electric shovels

• High resistance to abrasion and UV exposure

Solution implemented:

• Feichun Type SHD-GC 25kV with TPU jacket

• 3×3/0 AWG configuration

• Integrated ground check system

Results after 24 months:

• Zero insulation failures

• Reduced unplanned downtime

• Lower maintenance cost compared to CPE-jacket alternatives

This confirms SHD-GC’s suitability for African mining climates and operational conditions.

What Are the Best Installation Practices for SHD-GC 25kV Cables?

Recommended Installation Guidelines

• Always respect minimum bending radius (8×OD)

• Avoid sharp edges and uncontrolled dragging

• Use cable rollers or skid plates where possible

• Ensure proper termination with stress cones for 25kV

• Regularly inspect jacket condition and grounding continuity

Correct installation significantly extends service life and improves safety.

Frequently Asked Questions (FAQ)

Is SHD-GC 25kV suitable for continuous flexing?

Yes. Its stranded copper conductor, EPR insulation, and TPU jacket are designed specifically for continuous movement.

Can SHD-GC 25kV be used outdoors?

Absolutely. TPU offers excellent UV, moisture, and weather resistance.

Is this cable compliant with international standards?

Yes. It complies with ICEA S-75-381 / NEMA WC 58, ASTM B172, ASTM B33, and CAN/CSA C22.2 No. 96.

Can I request custom jacket or reinforcement options?

Yes. Two-layer jackets with reinforcing fiber are available upon request.

Why Choose Feichun for SHD-GC 25kV Portable Power Cables?

Feichun combines:

• Proven mining cable engineering

• International standard compliance

• Flexible customization capability

• Real-world mining project experience

If you are selecting a 25kV portable power cable for heavy mobile equipment, Feichun SHD-GC provides a balanced solution of safety, durability, and electrical performance.

👉 Need help selecting the right SHD-GC 25kV size or jacket option for your mining project?
Contact Feichun’s technical team for engineering support, datasheets, and project-specific recommendations.