Overview
| Model NO. | SHD-GC MYHV MHV | Application | Mining, Industrial, Monitoring System |
| Voltage | High Voltage | Conductor | Copper |
| Insulation Material | PVC,CPE,rubber | Jacket | PVC,EPR |
| Material Shape | Round | Temperature | -35 °C to 90 °C |
| Certification | ISO, CCC, CE, RoHS, VDE | Conductor Type | Class 5 |
| Brand | ZhongYI | Voltage Type | 6/10 kV |
| Company Name | ZHONGYI Cable Co., Ltd | Core | 3 + 1 Cores |
| Transport Package | Plastic Packaging and Cardboard Boxes | Specification | 16-240 mm² |
| Origin | HEBEI China | Color | Black |
| Nominal cross-sectional area (mm²) | Common AWG | Conductor structure (No./single wire diameter mm) | Nominal sheath thickness (mm) | Average outer diameter (mm) | Max DC resistance of conductor at 20 Ω/km |
Approx.weight kg/km |
| 3×16 | 5 | 126 / 0.40 | 6 | 42.5 | 1.21 | 2650 |
| 3×25 | 3 | 196 / 0.40 | 6 | 47.8 | 0.78 | 3380 |
| 3×35 | 2 | 276 / 0.40 | 6.5 | 52.4 | 0.554 | 4120 |
| 3×50 | 1/0 | 396 / 0.40 | 7 | 58.2 | 0.386 | 5450 |
| 3×70 | 2/0 | 360 / 0.50 | 7.50 | 64.5 | 0.272 | 7100 |
Features
SHD-GC /MYHV is a “high-grade” model among mining cables. “HV” stands for High Voltage, and it is typically used to power large-scale underground mining equipment with a rated voltage ranging from 6 kV to 10 kV. sometime calls MHV Cable or YPE 441/450/455.
Technical Comparison: SHD-GC MYHV MHV vs. MY Mining Cables
| Feature | MY (Low Voltage) | MYHV (High Voltage) |
|---|---|---|
| Full Name | Mobile Mining Rubber Cable | High Voltage Mobile Mining Cable |
| Rated Voltage | 0.38/0.66kV up to 1.14kV | 6kV, 10kV, or 8.7/15kV |
| No. of Cores | 2 to 6 cores (usually 3+1 or 3+2) | 3 cores (Standard: 3+1 or 3+1+1) |
| Insulation | Standard Rubber (EPR/Natural) | Thickened High-Grade EPR Rubber |
| Shielding | Usually None (unless MYP) | Mandatory (Semiconductive + Metallic) |
| Core Structure | Smaller cross-sections available | Larger cross-sections (16mm² to 240mm²) |
| Outer Diameter | Thinner, more portable | Thick/Heavy due to HV insulation |
| Main Usage | Drills, lights, small mobile tools | Coal cutters, tunnelers, substations |
High Voltage Capacity: Engineered to handle 6kV, 8.7kV, and 10kV power transmission safely.
Extreme Durability: The heavy-duty chlorinated polyethylene (CPE) or rubber sheath resists tearing and abrasion.
Flame Retardant: Self-extinguishing materials designed to meet strict underground coal mine fire safety standards.
Superior Flexibility: Class 5 fine-stranded copper allows the cable to be moved and coiled even at high voltages.
Advanced Insulation: High-grade EPR (Ethylene Propylene Rubber) ensures excellent dielectric strength.
Application
Heavy Machinery: Powering large coal shearers, tunneling machines, and mobile substations.
High-Voltage Distribution: Connecting underground main power lines to mobile equipment centers.
Dynamic Environments: Areas requiring high-capacity power where cables must be moved frequently.
Certification
Factory
FAQ
1. What is the structural significance of the 'SHD-GC' and 'MYHV' coding under international mining standards?
Heavy-Duty Engineering Framework:
The alphanumeric designations are strictly locked under global mining standard frameworks to define distinct mechanical and electrical layers. ‘SHD-GC’ follows North American ICEA/ICEA S-75-381 standards, where ‘S’ denotes heavy-duty portable power; ‘HD’ represents a metallic/semiconductive shield on each phase core; and ‘GC’ explicitly integrates a dedicated Ground Check conductor to continuously monitor ground loop safety. Conversely, ‘MYHV’ directly satisfies China’s rigorous national coal mine framework (M-Mining, Y-Mobile, HV-High Voltage 6/10kV), ensuring absolute regulatory compliance during cross-border utility project bidding.
2. Why is an individual shielding matrix mandatory for 6/10kV high-voltage trailing cables?
Dielectric Stress & Flashover Mitigation:
High-voltage (6kV to 10kV) electricity generates extreme, localized electrical stress that can easily trigger insulation breakdown and dangerous underground arc flashes. Our SHD-GC / MYHV series completely mitigates this hazard by applying a multi-layer shielding matrix around each XLPE/EPR insulated core: a semi-conductive tape layer combined with a high-density tinned copper wire braid. This composite armor distributes the radial electrical field uniformly, channelling stray current safely to ground and preventing lethal electrical faults during constant line twisting.
3. How does the Ground Check (GC) conductor elevate life-safety inside underground coal mines?
Continuous Earth Integrity Data Logging:
Underground tunnel mining involves massive physical vibrations that can break standard safety ground wires without immediate notice. The specialized ‘GC’ (Ground Check) insulated wire works in conjunction with a specialized ground-fault monitoring relay system inside the substation circuit breaker. By running a low-current continuous monitoring loop through this core, the system will instantaneously trip and isolate the main 10kV power feed within milliseconds if any physical grounding break or tension stretch occurs, avoiding severe shock hazards.
4. How does the Chlorinated Polyethylene (CPE) jacket protect trailing lines from dynamic friction?
Harsh Tearing & Chemical Fluid Immunity:
Heavy coal shearers and tunnelers drag trailing power cables over sharp fractured rocks, aggressive damp mud, and acid-alkali mine water. To secure an extended operational lifespan, our SHD-GC cables are jacketed in a premium, specialized Chlorinated Polyethylene (CPE) or heavy-duty synthetic rubber compound. This robust polymeric vulcanized shell exhibits exceptional anti-tearing strength, superb abrasion resilience, and high flame-retardant self-extinguishing properties that completely block internal moisture treeing degradation.
5. What wholesale core variations and heavy-duty logistics packaging does ZHONGYI CABLE guarantee?
Project Customization & Rigid Reel Logistics:
As a dedicated B2B cable manufacturer, we engineer SHD-GC / MYHV trailing lines in standard 3-core configurations embedded with integrated ground wires (such as 3 Cores + 2 Grounds + 1 Ground Check) spanning heavy cross-sections from 16 mm² up to 240 mm². To shield the dense rubber protective jacket from mechanical deformation or structural crushing during maritime sea freight transit, bulk orders are wound exclusively on heavy-duty treated steel-wooden drums or reinforced all-steel reels, backed by complete factory Type Test Reports.
Related
