Complete Technical Guide to High-Performance Mining and Material Handling
What is PROTOLON(M) F (N)TSCGEWOEU 3 kV – 30 kV Medium Voltage Reeling Cable?
Complete Technical Guide to High-Performance Mining and Material Handling Cables from Anhui Feichun Special Cable Co., Ltd. (安徽飞纯特种电缆有限公司)
Introduction to PROTOLON(M) F (N)TSCGEWOEU Cable
The PROTOLON(M) F (N)TSCGEWOEU represents an advanced class of medium voltage flexible power cables engineered specifically for demanding industrial environments. Manufactured by Anhui Feichun Special Cable Co., Ltd., this cable series delivers reliable power transmission across voltage ratings from 3.6/6 kV to 18/30 kV, making it indispensable for large-scale mining operations, conveyor systems, and heavy material handling equipment.
Unlike standard reeling cables designed for high-speed dynamic applications, the “F” designation in PROTOLON(M) F indicates this series is optimized for fixed and semi-flexible installations. This makes it particularly suited for permanent laying alongside conveyor belts, shiftable mining units, connections between upper and lower machinery sections (such as excavator car bodies), and continuous submersible pump operations.
Key Differentiator
The PROTOLON F series is engineered for applications involving continuous slight movements during operation, including vibrations, free sag, and minor twisting during machinery rotation. This distinguishes it from the PROTOLON R series designed for high-speed reeling applications up to 240 m/min. According to industry specifications based on DIN VDE 0250-813, this standard represents the benchmark for tough rubber-sheathed flexible reeling cables globally.
Purpose and Primary Applications
The PROTOLON(M) F (N)TSCGEWOEU cable serves multiple critical functions in industrial power distribution. Its primary applications encompass permanent installation alongside conveyor belt systems in both static and shiftable configurations, power delivery to material handling equipment experiencing continuous but limited movement, and interconnection between mobile machinery sections such as excavator superstructures and undercarriages.
A distinctive capability of this cable series is its suitability for submersible pump applications. The cable construction supports continuous operation in water environments, enabling reliable power supply to pumping equipment in mining dewatering operations and similar submerged installations. This versatility addresses the complex power distribution requirements found in modern open-cast mining operations, where equipment configurations often combine static and mobile power requirements. For comprehensive guidance on selecting appropriate cables for various mining scenarios, industry professionals can reference technical resources from established suppliers such as amplexmining.com.au and reelingcable.com.
Industry Sectors Served
Open-Cast Mining
Powers large excavators, stackers, reclaimers, and mobile crushers in strip mining and open-pit operations where equipment operates across extensive travel distances.
Conveyor Systems
Provides reliable power along permanent and shiftable conveyor belt installations transporting bulk materials across mining sites and processing facilities.
Material Handling
Supports connections to mobile cranes, dumpers, and transfer equipment requiring flexible yet stable power delivery during operational movements.
Pump Systems
Enables continuous submerged operation for dewatering pumps and submersible pump units in water management applications.
Technical Characteristics
The engineering specifications of PROTOLON(M) F (N)TSCGEWOEU cables reflect decades of development in high-performance industrial cable technology. The design prioritizes durability under mechanical stress while maintaining electrical performance across the full voltage range. As documented in technical literature from miningcable.cl, modern mining cables must deliver consistent performance across extreme environmental conditions while supporting extended service life.
Electrical Parameters by Voltage Rating
| Parameter | 3.6/6 kV | 6/10 kV | 8.7/15 kV | 12/20 kV | 18/30 kV |
|---|---|---|---|---|---|
| Rated Voltage (Uo/U) | 3.6/6 kV | 6/10 kV | 8.7/15 kV | 12/20 kV | 18/30 kV |
| Max. Operating Voltage AC | 4.2/7.2 kV | 6.9/12 kV | 10.4/18 kV | 13.9/24 kV | 20.8/36 kV |
| Max. Operating Voltage DC | 5.4/10.8 kV | 9/18 kV | 13.5/27 kV | 18/36 kV | 27/54 kV |
| AC Test Voltage (5 min) | 11 kV | 17 kV | 24 kV | 29 kV | 43 kV |
Mechanical Performance
Tensile Specifications
Additional Testing
Material Structure and Construction
The layered construction of PROTOLON(M) F (N)TSCGEWOEU cables incorporates carefully selected materials to achieve optimal performance across electrical, mechanical, and environmental parameters. Each component serves specific functions within the overall cable architecture.
Conductor System
The conductor consists of electrolytic copper in an untinned, very finely stranded configuration conforming to Class 5 standards. This stranding approach maximizes flexibility while maintaining excellent current-carrying capacity. Conductor cross-sections range from 25 mm² to 300 mm², with corresponding current ratings from 131 A to 620 A at 30°C ambient temperature for surface-laid installations.
Conductor Resistance Comparison
At 20°C, conductor resistance values range from 0.78 Ω/km for 25 mm² sections down to 0.0641 Ω/km for 300 mm² sections. These values ensure efficient power transmission with minimal losses, critical for long cable runs typical in mining applications. The relationship between conductor size and resistance follows established engineering principles, with resistance inversely proportional to cross-sectional area.
Insulation System
The primary insulation employs PROTOLON compound, a specialized formulation based on Ethylene Propylene Rubber (EPR). The compound type designation “better 3GI3” indicates enhanced performance characteristics exceeding standard EPR formulations. This material selection provides superior dielectric strength, flexibility retention across temperature extremes, and resistance to environmental degradation.
Electrical field control is achieved through dual semiconductive rubber compound layers positioned at both inner and outer insulation boundaries. This construction ensures uniform electric field distribution, preventing localized stress concentrations that could lead to premature insulation breakdown. The semiconductive layers enable controlled voltage gradients within the cable structure.
Core Configuration
The cable architecture features three main conductors in a laid-up configuration, with the protective earth conductor split into three parts positioned within the outer interstices. This arrangement optimizes the cable’s cross-sectional geometry while ensuring effective fault current paths. Core identification utilizes natural coloring with black semiconductive rubber, supplemented by white printed digits (1, 2, 3) for phase identification.
Sheath System
| Component | Material | Compound Type | Function |
|---|---|---|---|
| Inner Sheath | EPR-based compound | Special compound | Mechanical protection, core binding |
| Outer Sheath | Synthetic elastomer (CM) | Better 5GM3 | Environmental protection, abrasion resistance |
| Sheath Color | Red (standard) | ||
Standards Compliance and Certifications
Adherence to recognized international and regional standards ensures consistent product quality and regulatory acceptance across global markets. The PROTOLON(M) F (N)TSCGEWOEU cable series maintains compliance with multiple certification frameworks. As noted by cranecable.com.au, standards compliance provides operators with confidence that cables will perform reliably under the demanding conditions typical of industrial material handling.
Primary Standard
The cable design is based on DIN VDE 0250-813, the German national standard governing cables, wires, and flexible cords for power installations, specifically addressing trailing cable requirements. Germany remains the only country to have issued comprehensive design regulations specifically for flexible electrical cables serving cranes and material handling equipment, establishing DIN VDE 0250 as the de facto global benchmark for tough rubber-sheathed flexible cables.
Certifications and Approvals
Russian Federation
Test Standards
Safety Thresholds and Thermal Parameters
Understanding operational limits ensures safe, reliable cable performance throughout its service life. The thermal parameters define critical temperature boundaries that must be observed during installation and operation.
Temperature Specifications
| Parameter | Temperature | Notes |
|---|---|---|
| Max. Operating Temperature (Conductor) | 90°C | Continuous normal operation |
| Max. Short Circuit Temperature | 250°C | Emergency conditions only |
| Ambient Temp. (Fixed Installation) Min. | -40°C | Static applications |
| Ambient Temp. (Fixed Installation) Max. | +80°C | Static applications |
| Ambient Temp. (Flexible Operation) Min. | -25°C | During movement |
| Ambient Temp. (Flexible Operation) Max. | +60°C | During movement |
Critical Safety Considerations
The 250°C short circuit temperature rating indicates the maximum conductor temperature permissible during fault conditions. This parameter directly influences protection system coordination and should be considered when specifying protective devices. Short circuit current capacities range from 3.58 kA for 25 mm² conductors to 42.9 kA for 300 mm² conductors, enabling proper coordination with upstream protection equipment.
Environmental Resistance
The cable construction provides comprehensive resistance to environmental factors common in mining and industrial environments. This includes unrestricted use in both outdoor and indoor installations, with certified resistance to ozone, ultraviolet radiation, and moisture per EN 50525-2-21 requirements. Oil resistance testing follows IEC 60811-404 protocols, ensuring compatibility with the hydraulic fluids and lubricants prevalent in mining equipment.
Installation and Usage Precautions
Proper installation and operational practices maximize cable service life and ensure safe performance. The following guidelines address critical considerations for cable handling and installation.
Pre-Installation Requirements
Prior to installation, verify that environmental conditions fall within specified parameters. Installation should not proceed if ambient temperatures fall below -25°C, as cold conditions can temporarily reduce insulation flexibility and increase the risk of mechanical damage during handling. Allow sufficient time for cable temperature equalization if materials have been stored in significantly different temperature conditions.
Assess the installation path for potential mechanical hazards including sharp edges, abrasive surfaces, and points of potential crushing or impact. Install appropriate protection measures such as cable troughs, protective conduits, or impact shields where hazards cannot be eliminated.
Handling Guidelines
Observe minimum bending radii as specified in DIN VDE 0298-3 throughout all handling operations. The minimum bending radius varies with cable diameter and construction, but generally exceeds 12 times the overall cable diameter for single bend operations. Multiple or repeated bending operations require larger radii to prevent cumulative fatigue damage.
Avoid dragging cables over rough surfaces without appropriate protection. Although the outer sheath provides good abrasion resistance, excessive surface damage can compromise long-term environmental protection. Use appropriate lifting equipment and rolling techniques for handling cable drums.
Operational Considerations
When connecting to equipment experiencing continuous operational movement, ensure adequate cable length to accommodate the full range of motion without exceeding specified bending radii or tensile limits. The 15 N/mm² maximum tensile load specification should not be exceeded during any operational condition.
For submersible pump applications, verify that cable entry glands and terminations maintain water integrity rated for the expected submersion depth and pressure. Regular inspection schedules should include verification of gland sealing effectiveness.
Detailed Specifications by Voltage Class
3.6/6 kV Configuration Data
| Cross Section | OD Min (mm) | OD Max (mm) | Weight (kg/km) | Max. Force (N) | Current (A) |
|---|---|---|---|---|---|
| 3×25+3×25/3 | 33.6 | 36.6 | 2,090 | 1,125 | 131 |
| 3×35+3×25/3 | 36.1 | 39.1 | 2,510 | 1,575 | 162 |
| 3×50+3×25/3 | 40.4 | 43.4 | 3,210 | 2,250 | 202 |
| 3×70+3×35/3 | 43.9 | 46.9 | 4,070 | 3,150 | 250 |
| 3×95+3×50/3 | 49.7 | 53.7 | 5,300 | 4,275 | 301 |
| 3×120+3×70/3 | 53.1 | 57.1 | 6,430 | 5,400 | 352 |
| 3×150+3×70/3 | 56.8 | 60.8 | 7,310 | 6,750 | 404 |
| 3×185+3×95/3 | 61.7 | 65.7 | 9,000 | 8,325 | 461 |
| 3×240+3×120/3 | 68.4 | 72.4 | 11,280 | 10,800 | 540 |
| 3×300+3×150/3 | 75.1 | 79.1 | 13,770 | 13,500 | 620 |
Current carrying capacity values per VDE 0298-4, Table 15, for rubber cables laid on surface at 30°C ambient temperature. Derating factors apply for other installation conditions.
Electrical Properties Summary
| Cross Section (mm²) | Resistance at 20°C (Ω/km) | Capacitance (μF/km) | Inductance (mH/km) | Short Circuit Current (kA) |
|---|---|---|---|---|
| 25 | 0.78 | 0.35 | 0.32 | 3.58 |
| 35 | 0.554 | 0.39 | 0.31 | 5.01 |
| 50 | 0.386 | 0.45 | 0.29 | 7.15 |
| 70 | 0.272 | 0.51 | 0.28 | 10.01 |
| 95 | 0.206 | 0.58 | 0.27 | 13.59 |
| 120 | 0.161 | 0.64 | 0.26 | 17.16 |
| 150 | 0.129 | 0.71 | 0.25 | 21.45 |
| 185 | 0.106 | 0.77 | 0.25 | 26.46 |
| 240 | 0.0801 | 0.80 | 0.24 | 34.32 |
| 300 | 0.0641 | 0.85 | 0.23 | 42.90 |
Frequently Asked Questions
What distinguishes PROTOLON F from PROTOLON R series cables?
The “F” designation indicates cables optimized for fixed and semi-flexible installations involving continuous slight movements such as vibrations and minor twisting. The “R” designation identifies cables designed for high-speed reeling applications with travel speeds up to 240 m/min. Both series share similar construction quality but are engineered for different mechanical stress profiles.
Can these cables be used for submersible pump applications?
Yes, PROTOLON(M) F (N)TSCGEWOEU cables are specifically designed to support continuous operation in water environments. The cable construction and sheath materials provide appropriate water resistance for submersible pump power supply applications. Proper cable gland selection and installation remain critical for maintaining water integrity at termination points.
What is the expected service life of these cables?
Service life depends significantly on installation conditions, operational stress levels, and environmental factors. Under typical conveyor belt and material handling applications with proper installation and within specified parameters, service lives of 10-15 years are commonly achieved. More demanding applications or harsh environmental conditions may reduce service life, while less stressful applications may extend it.
Are special termination techniques required?
Medium voltage cable termination requires appropriate heat-shrink or cold-shrink termination systems designed for screened EPR-insulated cables. The semiconductive screening layers must be properly prepared and stress control elements correctly positioned to ensure reliable long-term performance. Factory-prepared terminations are recommended for critical applications.
What protection ratings are available?
The base cable achieves IEC 60332-1-2 fire performance certification and IEC 60811-404 oil resistance. Weather and UV resistance comply with EN 50525-2-21 requirements. Additional protection such as armoring or enhanced mechanical protection can be specified for particularly demanding installation environments.
Contact Anhui Feichun Special Cable Co., Ltd.
For technical specifications, pricing, and availability of PROTOLON(M) F (N)TSCGEWOEU cables, contact our engineering team directly. We provide comprehensive application support including cable sizing calculations, installation guidance, and custom configuration options tailored to your specific operational requirements.
Technical Inquiries
For specifications, application engineering, and technical support
Location
Building A Private Science and Technology Park
Hefei Economic and Technological Development Zone
Anhui Province, China
Additional Resources
For further technical information on medium voltage mining and reeling cables, the following industry resources provide valuable supplementary guidance:
Visit feichuncable.com for our complete product catalog and technical documentation. Industry professionals can also find relevant technical resources at reelingcable.com covering reeling cable technology solutions, amplexmining.com.au for Australian mining cable standards and applications, miningcable.cl for South American mining cable solutions, and cranecable.com for crane and material handling cable systems.
