MV flexible reeling cable for connection of large material handling machines such as excavators, dumpers, mobile crushers in open-cast mines. Suitable for supply of heavy excavators, loading bridges and other machines.
What is EPN 78 3,6/6 kV
Mining & Tunneling MV Flexible Reeling Cable?
礦山隧道中壓柔性卷筒電纜技術解析
MV flexible reeling cable for connection of large material handling machines such as excavators, dumpers, mobile crushers in open-cast mines. Suitable for supply of heavy excavators, loading bridges and other machines.
專為露天礦山大型物料搬運設備（如挖掘機、自卸車、移動式破碎機）設計的中壓柔性卷筒電纜，適用於重型挖掘機、裝載橋及其他機械設備供電。
Product Overview / 產品概述
Technical Definition
The EPN 78 3,6/6 kV is a medium voltage (MV) flexible reeling cable specifically engineered for open-cast mining operations. This cable features a three-core design with three protective-earth conductors positioned in the outer interstices, providing reliable grounding protection for heavy mobile equipment. The designation “EPN 78” follows the Serbian/Yugoslav cable designation system (SRPS N.C5.374), indicating its robust construction for demanding mining environments.
The cable utilizes finely stranded tinned copper conductors (Class 5 per IEC 60228), EPR rubber insulation with semi-conductive layers, and a chlorinated polyethylene (CPE) outer sheath for superior environmental protection.
技術定義
EPN 78 3,6/6 kV 是一款專為露天採礦作業設計的中壓柔性卷筒電纜。該電纜採用三芯設計，三根保護接地導體布置於外部間隙中，為重型移動設備提供可靠的接地保護。「EPN 78」型號遵循塞爾維亞/南斯拉夫電纜標準體系（SRPS N.C5.374），表明其針對嚴苛礦山環境的堅固結構設計。
該電纜採用細絞合鍍錫銅導體（符合IEC 60228第5類），EPR橡膠絕緣配合半導電層，以及氯化聚乙烯（CPE）外護套，提供卓越的環境防護性能。
Reference Source / 參考來源: According to technical resources from Reeling Cable – Mine Reeling Cable Technical Resource, DIN VDE 0250 compliant mining reeling cables are designed for heavy-duty mobile mining equipment with fire retardant and oil resistant properties, featuring temperature ranges from -50°C to +80°C for demanding mining applications.
Cable Construction / 電纜結構
Multi-Layer Construction Design
The EPN 78 cable employs a sophisticated multi-layer construction optimized for flexible reeling applications. The finely stranded copper conductors (Class 5) ensure excellent flexibility during repeated bending cycles on cable drums. The semi-conductive EPR inner layer provides uniform electric field distribution, while the outer semi-conductive NBR easy-strip layer facilitates efficient field termination.
多層結構設計
EPN 78 電纜採用針對柔性卷繞應用優化的精密多層結構。細絞合銅導體（第5類）確保在卷筒反覆彎曲循環中具有優異的柔韌性。半導電EPR內層提供均勻的電場分佈，而外層半導電NBR易剝離層便於高效的現場端接作業。
| Component / 組件 | Material / 材料 | Standard / 標準 | Function / 功能 |
|---|---|---|---|
| Conductor / 導體 | Finely stranded copper, tinned, Class 5 | DIN EN 60228 / IEC 60228 | Power transmission / 電力傳輸 |
| Core Configuration / 芯線配置 | Three-core + three PE conductors in interstices | DIN VDE 0250-813 | Power + protective earth / 電力+保護接地 |
| Inner Semi-conducting Layer / 內半導層 | Semi-conductive EPR | DIN VDE 0207 | Electric field control / 電場控制 |
| Core Insulation / 芯線絕緣 | EPR rubber – Special compound 3GI3 | DIN VDE 0207-20 | Electrical isolation / 電氣絕緣 |
| Outer Semi-conducting Layer / 外半導層 | Semi-conductive NBR easy-strip | DIN VDE 0207 | Field control & termination / 電場控制及端接 |
| Inner Sheath / 內護套 | EPR rubber – Special compound 5GM3 | SRPS N.C5.374 | Mechanical protection / 機械保護 |
| Outer Sheath / 外護套 | Chlorinated polyethylene (CM/CPE) – 5GM5 | DIN EN 60811-404 | Environmental protection / 環境防護 |
Electrical & Thermal Parameters / 電氣及熱性能參數
Flame retardant in accordance with EN/IEC 60332-1-2
阻燃性能符合 EN/IEC 60332-1-2 標準
According to DIN VDE 0298 Part 3:
• Fixed installation: 6 × D
• Flexible operation: 8 × D
• Reeling applications: 10 × D
Where D = cable outer diameter / D為電纜外徑
Product Range & Dimensions / 產品規格範圍
| Product No. | Configuration / 配置 | Conductor Ø (mm) | Cable Ø Min (mm) | Cable Ø Max (mm) | Weight (kg/km) |
|---|---|---|---|---|---|
| 02022637 | 3×25+3×10 | 6.6 | 40.6 | 44.6 | 2,700 |
| 20222819 | 3×35+3×16 | 7.7 | 42.8 | 46.8 | 3,200 |
| 20180753 | 3×50+3×16 | 9.3 | 48.0 | 52.0 | 4,300 |
| 02022637 | 3×70+3×16 | 11.5 | 54.2 | 58.2 | 5,250 |
| 20219165 | 3×95+3×16 | 13.2 | 56.0 | 59.0 | 5,900 |
| 20180754 | 3×95+3×25 | 13.2 | 57.0 | 61.0 | 6,100 |
| EPN_78_6kV_001 | 3×120+3×16 | 14.9 | 58.3 | 62.3 | 6,700 |
| 20219166 | 3×120+3×25 | 14.9 | 58.8 | 61.8 | 7,050 |
| 20267019 | 3×150+3×25 | 15.2 | 66.0 | 70.0 | 8,483 |
| 20180755 | 3×185+3×25 | 18.4 | 69.0 | 73.0 | 9,950 |
Configuration Notation / 配置說明: The notation “3×25+3×10” indicates 3 power cores of 25mm² cross-section plus 3 protective earth (PE) conductors of 10mm² cross-section. Higher PE conductor cross-sections (e.g., 3×25 vs 3×16) provide enhanced fault current carrying capacity for demanding mining applications.
配置標註「3×25+3×10」表示3根25mm²截面積電力芯線加3根10mm²截面積保護接地（PE）導體。較大的PE導體截面積（如3×25對比3×16）可為嚴苛礦山應用提供更強的故障電流承載能力。
Standards & Certifications / 執行標準與認證
Standard Compliance Notes
The EPN 78 cable is manufactured based on DIN VDE 0250-813 (German standard for flexible cables in mining applications) and SRPS N.C5.374 (Serbian national standard). The conductor construction complies with IEC 60228 Class 5 requirements for flexible conductors. Flame retardancy is verified per EN/IEC 60332-1-2, ensuring the cable does not propagate fire along its length.
標準符合性說明
EPN 78 電纜依據 DIN VDE 0250-813（德國礦用柔性電纜標準）及 SRPS N.C5.374（塞爾維亞國家標準）製造。導體結構符合 IEC 60228 第5類柔性導體要求。阻燃性能依據 EN/IEC 60332-1-2 驗證，確保電纜不會沿長度方向傳播火焰。
Applications / 應用場景
🏗️ Heavy Excavators / 重型挖掘機
Power supply for electric and hydraulic excavators in open-cast mining operations requiring flexible cable connections. / 露天採礦作業中需要柔性電纜連接的電動及液壓挖掘機供電。
🚛 Dumpers / 自卸車
Reliable power delivery for large mining dumpers operating on electrified mine haul roads. / 在電氣化礦山運輸道路上運行的大型礦用自卸車的可靠供電。
⚙️ Mobile Crushers / 移動式破碎機
Flexible power connections for primary and secondary crushing equipment requiring frequent repositioning. / 需要頻繁重新定位的初級和二級破碎設備的柔性電源連接。
🏭 Loading Bridges / 裝載橋
Power supply systems for large loading bridge structures in material handling facilities. / 物料搬運設施中大型裝載橋結構的供電系統。
🔄 Cable Reel Systems / 卷筒系統
Optimized for mono-spiral and cylindrical cable reels with repeated winding/unwinding cycles. / 針對單螺旋及圓柱形卷筒的反覆收放循環進行優化設計。
⛏️ Draglines & Shovels / 拉鏟與鏟斗
Medium-sized draglines and shovels for overburden removal in surface mining operations. / 露天採礦作業中用於剝離覆蓋層的中型拉鏟和鏟斗設備。
Industry Reference / 行業參考: According to Power & Cables Mining Technical Resources, medium voltage flexible reeling cables based on DIN VDE 0250-813 are specifically designed for connection of large material handling machines in open-cast mines, supporting equipment including conveyor belts, spreaders, draglines/shovels and continuous excavators with voltage ratings from 3.6kV/6kV up to 18kV/30kV.
Performance Comparison / 性能對比分析
| Parameter / 參數 | EPN 78 3,6/6kV | Standard Mining Cable | Advantage / 優勢 |
|---|---|---|---|
| Voltage Rating / 電壓等級 | 3.6/6 (7.2) kV | 1.9/3.3 kV | +82% Higher Voltage |
| Conductor Class / 導體等級 | Class 5 (Finely stranded) | Class 2 (Stranded) | Superior Flexibility |
| Fixed Installation Temp / 固定安裝溫度 | -40°C to +80°C | -25°C to +70°C | Extended Range |
| Flexible Operation Temp / 移動安裝溫度 | -25°C to +60°C | -15°C to +50°C | Wider Operating Window |
| Outer Sheath / 外護套 | CPE (5GM5 compound) | Standard PCP | Enhanced Chemical Resistance |
| PE Conductor Design / PE導體設計 | 3 conductors in interstices | Concentric or single | Improved Fault Protection |
| Semi-conducting Layer / 半導電層 | NBR easy-strip | Standard NBR | Faster Termination |
| Environmental Resistance / 環境耐受 | Oil, UV, Ozone | Oil, Basic UV | Comprehensive Protection |
| Configuration | Total Cu Area (mm²) | Cable Weight (kg/km) | Weight/Area Ratio | Efficiency Rating |
|---|---|---|---|---|
| 3×25+3×10 | 105 | 2,700 | 25.7 | ★★★★★ |
| 3×35+3×16 | 153 | 3,200 | 20.9 | ★★★★★ |
| 3×50+3×16 | 198 | 4,300 | 21.7 | ★★★★☆ |
| 3×95+3×25 | 360 | 6,100 | 16.9 | ★★★★☆ |
| 3×120+3×25 | 435 | 7,050 | 16.2 | ★★★★☆ |
| 3×185+3×25 | 630 | 9,950 | 15.8 | ★★★☆☆ |
Contact Anhui Feichun Special Cable Co., Ltd.
聯繫安徽飛純特種電纜有限公司
Building A, Private Science and Technology Park, Hefei Economic and Technological Development Zone, Anhui Province, China
中國安徽省合肥經濟技術開發區民營科技園A座
References & Resources / 參考資源
Technical Documentation / 技術文檔:
• Mine Reeling Cable (N)TSCGEWTOES – Reeling Cable Technical Resource (DoFollow)
• Power & Cables – Mining Cables Technical Catalogue
• FKS – Heavy Duty Mining Power Cables EpN 78
• Liebherr – Cable Reeler System Technical Spotlight
