Space-Constrained Cable Reel Applications — 空间受限卷筒电缆选型技术指南
专业卷筒电缆解决方案
RHEYFIRM® (RS) vs. RHEYFIRM® (RTS): When Should You Choose the “Reduced Diameter” Version?Space-Constrained Cable Reel Applications — 空间受限卷筒电缆选型技术指南
Introduction to RHEYFIRM® Reeling Cables RHEYFIRM®卷筒电缆简介
RHEYFIRM® represents Nexans’ premium brand of flexible medium voltage reeling cables designed for high and extreme mechanical stress applications. These cables are engineered especially for torsional stress and high reeling speeds, with capability for deflection into different planes. The choice between standard (RS) and reduced diameter (RTS) versions significantly impacts reel capacity, installation flexibility, and overall system performance in space-constrained environments.
RHEYFIRM®是Nexans针对高强度机械应力应用设计的优质柔性中压卷筒电缆品牌，专为扭转应力和高速卷绕工况设计。标准型(RS)与减径型(RTS)的选择对卷筒容量和系统性能有重要影响。
Understanding the RS vs. RTS Designation RS与RTS命名解析
The designation system for RHEYFIRM® cables follows Nexans’ systematic nomenclature where “RS” indicates Regular/Standard construction and “RTS” denotes Reduced Thickness Sheath or Reduced diameter Total construction. The RTS version achieves diameter reduction through optimized insulation wall thickness, compact stranding geometry, and thinner protective layers while maintaining equivalent electrical performance.
RHEYFIRM®电缆命名系统中，”RS”表示常规/标准结构，”RTS”表示减薄护套或整体减径结构。RTS版本通过优化绝缘厚度、紧凑绞合几何和更薄保护层实现减径，同时保持相同电气性能。
Type Designation Codes 型号命名代码
| Code 代码 | Meaning 含义 | Description 说明 |
|---|---|---|
| (N) | Recognized type 认可型号 | VDE registered construction |
| T | Trailing cable 拖曳电缆 | For mobile/reeling applications |
| SC | Screened cores 屏蔽芯线 | Individual core screening |
| GE | Earth conductors 接地芯 | Integrated ground conductors |
| W | Weather resistant 耐候 | UV, moisture, ozone resistant |
| T (suffix) | Torsion resistant 抗扭 | Anti-torsion braid reinforcement |
| O | Oil resistant 耐油 | 5GM5 oil-resistant sheath |
| EU | European 欧洲标准 | DIN VDE compliance |
| S | Heavy duty sheath 重型护套 | Chlorinated rubber compound |
Technical Standards Compliance 技术标准符合性
| Standard 标准 | Scope 适用范围 | Key Requirements 关键要求 |
|---|---|---|
| DIN VDE 0250-813主要执行标准 | Medium voltage trailing cables 3.6/6kV to 18/30kV | Construction, dimensions, testing |
| DIN VDE 0295导体标准 | Conductor classes (Class 5/6 flexible) | Stranding, resistance |
| DIN VDE 0298-3/4载流量标准 | Current carrying capacity, installation | Derating factors, tensile loads |
| DIN VDE 0207-20/21绝缘护套材料 | EPR insulation, rubber sheath compounds | Material properties |
| prEN 50363欧洲电缆材料 | Insulating and sheathing materials | Fire, mechanical properties |
| IEC 60332-1阻燃标准 | Flame retardant testing | Vertical flame propagation |
RHEYFIRM® (RS) Standard Construction RHEYFIRM® (RS) 标准结构
The RHEYFIRM® (RS) standard version, designated (N)TSCGEWOEUS, provides robust construction with full-thickness insulation and sheath layers optimized for maximum durability in demanding applications. This design prioritizes mechanical protection and long service life over dimensional compactness.
Construction Details 结构详情
| Component 组件 | Material/Specification 材料/规格 |
|---|---|
| Conductor导体 | Copper, plain, flexible stranded Class 5 per IEC 60228/DIN VDE 0295 |
| Conductor Screen导体屏蔽 | Inner semi-conductive EPR layer |
| Insulation绝缘层 | High-grade EPR compound (≥3GI3) per DIN VDE 0207-20 |
| Insulation Screen绝缘屏蔽 | Outer semi-conductive layer, easy-strip design (“RHEYSTRIP”) |
| Core Assembly成缆 | Power cores over semi-conductive rubber center with fillers |
| Earth Conductor接地导体 | Split protective conductor in interstices |
| Inner Sheath内护套 | Extruded GM1b synthetic rubber compound |
| Reinforcement增强层 | Embedded braid of high-tensile synthetic threads |
| Outer Sheath外护套 | Chlorinated heavy-duty rubber 5GM5, oil/flame/tear resistant, Red |
RHEYFIRM® (RTS) Reduced Diameter Construction RHEYFIRM® (RTS) 减径结构
The RHEYFIRM® (RTS) reduced diameter version, designated (N)TSCGEWTOEUS, achieves significant diameter reduction through optimized construction while maintaining full electrical performance. This design is specifically engineered for applications where cable reel dimensions are constrained or where increased cable length per reel is required.
RHEYFIRM® (RTS)减径版本通过优化结构实现显著减径，同时保持完整电气性能。专为卷筒尺寸受限或需要增加单盘电缆长度的应用设计。
Diameter Reduction Methods 减径方法
| Optimization Area 优化领域 | Standard (RS) 标准型 | Reduced (RTS) 减径型 |
|---|---|---|
| Insulation Wall绝缘壁厚 | Full thickness per DIN VDE 0250-813 | Optimized minimum per standard allowance |
| Conductor Stranding导体绞合 | Class 5 standard geometry | Class 6 compact geometry where applicable |
| Inner Sheath内护套 | Standard thickness GM1b | Reduced thickness with maintained properties |
| Outer Sheath外护套 | Full 5GM5 thickness | Optimized thickness (T = Thin) |
| Filler Design填充设计 | Standard semi-conductive fillers | Compact optimized filler geometry |
Dimensional Comparison 尺寸对比
Typical Outer Diameter Comparison (3×95mm² + 3×50mm²/3) 典型外径对比
| Voltage Rating 电压等级 | RS Diameter (approx.) 标准外径 | RTS Diameter (approx.) 减径外径 | Reduction 减径比例 |
|---|---|---|---|
| 3.6/6kV | ~58mm | ~52mm | ~10-12% |
| 6/10kV | ~65mm | ~58mm | ~10-12% |
| 8.7/15kV | ~72mm | ~65mm | ~10% |
| 12/20kV | ~82mm | ~74mm | ~10% |
| 18/30kV | ~95mm | ~86mm | ~9-10% |
注：实际尺寸因截面积和具体配置而异，上述数据仅供参考。Actual dimensions vary by cross-section and configuration.
Impact on Cable Reel Capacity 对卷筒容量的影响
The relationship between cable diameter and reel capacity follows a quadratic relationship. A 10% reduction in cable diameter results in approximately 20-25% increase in reel capacity, making the RTS version particularly valuable for space-constrained applications where maximizing cable length per reel is critical.
L = (π × B × (D² – d²)) / (4 × C²)
Where 其中: L = Cable length 电缆长度 (m)
B = Traverse width 卷筒宽度 (mm)
D = Flange diameter 法兰直径 (mm)
d = Drum core diameter 卷筒芯径 (mm)
C = Cable outer diameter 电缆外径 (mm)
Capacity Increase Example 容量增加示例
| Parameter 参数 | RS Version (58mm OD) | RTS Version (52mm OD) | Difference 差异 |
|---|---|---|---|
| Reel Dimensions卷筒尺寸 | Flange: 2000mm, Drum: 800mm, Traverse: 600mm | ||
| Calculated Capacity计算容量 | ~520m | ~650m | +25% |
| Weight per 100m每百米重量 | ~1,850kg | ~1,720kg | -7% |
| Min. Bending Radius最小弯曲半径 | 12× OD = 696mm | 12× OD = 624mm | -10% |
Performance Comparison 性能对比
| Parameter 参数 | RHEYFIRM® (RS) | RHEYFIRM® (RTS) |
|---|---|---|
| Electrical Performance电气性能 | Full rated voltage/current | Equivalent rated voltage/current |
| Max. Conductor Temp.最高导体温度 | 90°C continuous | 90°C continuous |
| Short-circuit Temp.短路温度 | 250°C (5s) | 250°C (5s) |
| Max. Tensile Load最大拉力 | Up to 30 N/mm² | Up to 30 N/mm² |
| Max. Reeling Speed最高卷绕速度 | Up to 240 m/min | Up to 240 m/min |
| Mechanical Protection机械保护 | Maximum (full sheath) | Adequate (optimized sheath) |
| Abrasion Resistance耐磨性 | Superior | Good |
| Service Life (typical)典型使用寿命 | 15-20 years | 12-18 years |
| Reel Space Efficiency卷筒空间效率 | Standard | +20-25% capacity |
When to Choose RTS (Reduced Diameter) 何时选择RTS减径型
✓ Choose RHEYFIRM® (RTS) When 选择RTS的情况:
| Space-Constrained Reels卷筒空间受限 | Existing reel dimensions cannot accommodate standard cable length requirements |
| Retrofit Applications改造应用 | Replacing cables on existing equipment where reel cannot be enlarged |
| Extended Travel Distance延长行程距离 | Application requires longer cable run than standard construction allows |
| Weight Optimization重量优化 | Reel weight capacity is limited; lighter cable preferred |
| Bending Radius Limits弯曲半径限制 | Drum diameter is fixed and smaller bending radius is beneficial |
| High-Speed STS Cranes高速岸桥 | Modern fast-cycling cranes with compact cable reel housings |
✓ Choose RHEYFIRM® (RS) Standard When 选择RS标准型的情况:
| New Installations新建项目 | Reel can be sized appropriately for standard cable dimensions |
| Harsh Environments恶劣环境 | Maximum mechanical protection required (mining, abrasive conditions) |
| Extended Service Life延长使用寿命 | Premium durability and longer maintenance intervals preferred |
| High Abrasion Exposure高磨损暴露 | Cable route includes significant abrasive contact points |
| Budget Priority预算优先 | Standard construction typically more cost-effective |
| Mining Applications采矿应用 | Excavators, draglines, mobile crushers in open-pit mining |
Application-Specific Recommendations 应用特定建议
| Application 应用 | Recommended 推荐型号 | Rationale 理由 |
|---|---|---|
| Ship-to-Shore Cranes (STS)岸边集装箱起重机 | RTS preferred | Space constraints in boom housing, high cycling speed |
| Rail Mounted Gantry (RMG)轨道式龙门吊 | RS or RTS | Depends on reel design; RTS for compact systems |
| Rubber Tired Gantry (RTG)轮胎式龙门吊 | RTS preferred | Mobile unit weight optimization important |
| Ship Unloader卸船机 | RS or RTS | Application-specific based on travel length |
| Stacker Reclaimer堆取料机 | RS preferred | Harsh abrasive environment, durability priority |
| Mining Excavator矿用挖掘机 | RS preferred | Extreme mechanical stress, maximum protection needed |
| Mobile Crusher移动破碎机 | RS preferred | Abrasive dust environment, impact resistance |
| Festoon Systems悬挂系统 | RTS advantageous | Reduced weight beneficial for trolley systems |
Installation Considerations 安装注意事项
| Parameter 参数 | RS Guidelines RS指南 | RTS Guidelines RTS指南 |
|---|---|---|
| Min. Drum Diameter最小卷筒直径 | ≥12× cable OD | ≥12× cable OD |
| Min. Installation Temp.最低安装温度 | -25°C | -25°C |
| Operating Temp. Range工作温度范围 | -40°C to +90°C (fixed), -25°C to +90°C (flexed) | Same |
| Reeling Tension卷绕张力 | Per DIN VDE 0298-3 | Slightly reduced recommended |
| Layer Overlap层间搭接 | Standard winding pattern | Precise winding more critical |
| Edge Clearance边缘间隙 | ≥1.5× cable OD from flange | ≥1.5× cable OD from flange |
Available Variants with Fiber Optics 光纤集成版本
Both RS and RTS versions are available with integrated optical fiber elements (OFE designation) for combined power and data transmission. In the RTS-OFE version, split protective earth cores are integrated in two of the three interstices, with the optical fiber element accommodated in the third interstice.
| Feature 特性 | Standard Power 标准电力型 | OFE (Fiber Optic) 光纤集成型 |
|---|---|---|
| Designation型号标识 | (N)TSCGEWTOEUS | (N)TSCGEWTOEUS OFE |
| Fiber Options光纤选项 | — | 9/125μm, 50/125μm, 62.5/125μm |
| Fiber Count纤芯数量 | — | 6, 12, 18, or 24 fibers |
| Additional Standard附加标准 | — | DIN VDE 0888 |
Technical References & Standards 技术参考与标准
- German Institute for Standardization — DIN VDE 0250-813: Medium voltage trailing cables for rated voltages 3.6/6 kV to 18/30 kV. www.vde-verlag.de
- Nexans Germany — RHEYFIRM® (RTS) R-(N)TSCGEWTOEUS Technical Documentation. www.nexans.de
- CSE Industrial Electrical Distributors — RHEYFIRM®(RTS) Cable Specifications. www.cse-distributors.co.uk
- DIN VDE 0298-3/4: Use of cables and flexible cords in power installations. www.beuth.de
- Tratos Group — DIN VDE 0250 Part 813 Standard Information. tratosgroup.com
- Prysmian Group — PROTOLON Medium Voltage Reeling Cables Technical Data. www.prysmian.com
- Incore Cables — (N)TSCGEWOEU Cable Datasheet. www.incore-cables.com
