Comprehensive Technical Reference for EN 50618 Compliant Solar Cables — Designed for Photovoltaic Power Systems with 1500V DC Rating, UV Resistant, and Extreme Temperature Operation (-40°C to +90°C)
符合 EN 50618 標準的光伏電纜完整技術參考 — 專為光伏發電系統設計，1500V DC 額定電壓，抗紫外線，極端溫度運行（-40°C 至 +90°C）
Complete Guide to SOLAR4 & SOLAR6
Photovoltaic Cables
Comprehensive Technical Reference for EN 50618 Compliant Solar Cables — Designed for Photovoltaic Power Systems with 1500V DC Rating, UV Resistant, and Extreme Temperature Operation (-40°C to +90°C)
符合 EN 50618 標準的光伏電纜完整技術參考 — 專為光伏發電系統設計，1500V DC 額定電壓，抗紫外線，極端溫度運行（-40°C 至 +90°C）
Product Overview 產品概述
What Are Solar (PV) Cables?什麼是光伏電纜？
Solar cables, also known as photovoltaic (PV) cables, are specialized single-core cables specifically engineered for use in solar power generation systems. The SOLAR4 and SOLAR6 cables from Anhui Feichun Special Cable are designed to interconnect solar panels, junction boxes, and inverters in both residential and commercial photovoltaic installations. These cables must withstand the unique challenges of solar applications including continuous outdoor UV exposure, extreme temperature variations from freezing winters to scorching summers, and potential mechanical stress during installation and maintenance. Manufactured to EN 50618 standards, these cables feature tinned copper conductors that provide superior corrosion resistance and cross-linked insulation materials that ensure reliable performance throughout the typical 25+ year lifespan of solar installations.
光伏電纜，也稱為 PV 電纜，是專門為太陽能發電系統設計的單芯特種電纜。安徽飛純特種電纜的 SOLAR4 和 SOLAR6 電纜專為住宅和商業光伏安裝中的太陽能電池板、接線盒和逆變器之間的互連而設計。這些電纜必須承受太陽能應用的獨特挑戰，包括持續的戶外紫外線照射、從嚴寒冬季到酷熱夏季的極端溫度變化，以及安裝和維護過程中可能的機械應力。按照 EN 50618 標準製造，這些電纜採用鍍錫銅導體，提供優越的耐腐蝕性能，交聯絕緣材料確保在典型的 25 年以上光伏系統壽命內可靠運行。
Key Features & Benefits主要特點與優勢
Superior UV Resistance卓越的抗紫外線性能
Specially formulated outer sheath withstands continuous solar UV exposure for 25+ years without degradation or cracking.
Extreme Temperature Range極端溫度範圍
Operates reliably from -40°C to +90°C, suitable for installations from arctic regions to desert climates.
High Voltage Rating高電壓額定值
1500V DC / 1000V AC rating supports modern high-efficiency solar systems and string configurations.
Tinned Copper Conductors鍍錫銅導體
Tinning provides excellent corrosion resistance, ensuring consistent conductivity over decades of service.
Weather & Water Resistant耐候及防水
Designed for permanent outdoor installation with resistance to rain, humidity, and atmospheric conditions.
Flame Retardant Design阻燃設計
Cross-linked materials provide inherent flame retardancy and 200°C short circuit temperature tolerance.
Common Technical Parameters通用技術參數
SOLAR4 Photovoltaic Cable SOLAR4 光伏電纜
SOLAR4 — 4mm² Solar Cable
SOLAR4 — 4mm² 光伏電纜Single-core PV cable for residential and small commercial solar installations • EN 50618 • 1500V DC
The SOLAR4 cable with 4mm² cross-section is optimally designed for residential solar installations and smaller commercial PV systems. With a current capacity of 55A, this cable size is ideal for connecting individual solar panels or small panel strings to junction boxes, as well as running DC cables from string combiners to inverters in typical residential rooftop installations. The 4mm² conductor provides an excellent balance between current-carrying capability, flexibility for routing around roof structures, and cost-effectiveness. The fine-stranded tinned copper construction ensures easy termination with standard MC4 connectors while providing the flexibility needed for installation in confined spaces around mounting rails and junction boxes.
截面積為 4mm² 的 SOLAR4 電纜專為住宅光伏安裝和小型商業光伏系統優化設計。該電纜具有 55A 的載流量，非常適合將單個太陽能電池板或小型電池板串連接到接線盒，以及在典型住宅屋頂安裝中從組串匯流箱到逆變器的直流電纜敷設。4mm² 導體在載流能力、繞屋頂結構佈線的柔韌性和成本效益之間提供了極佳的平衡。精細絞合的鍍錫銅結構確保與標準 MC4 連接器輕鬆端接，同時提供在安裝軌道和接線盒周圍狹小空間安裝所需的柔韌性。
Complete Specifications完整規格
| Product Code產品編碼 | Core Sizemm² | Conductor導體類型 | Overall Dia.外徑 (mm) | Current Capacity載流量 (A) | Resistance @20°C電阻 (Ω/km) | Sheath Colour護套顏色 | Lengths長度 (m) |
|---|---|---|---|---|---|---|---|
| SOLAR4 | 4 | Fine-Stranded Tinned Cu | 5.6 | 55 | 5.09 | Black / Red | 100, 500 |
SOLAR6 Photovoltaic Cable SOLAR6 光伏電纜
SOLAR6 — 6mm² Solar Cable
SOLAR6 — 6mm² 光伏電纜Single-core PV cable for larger commercial and utility-scale solar installations • EN 50618 • 1500V DC
The SOLAR6 cable with 6mm² cross-section is engineered for larger commercial installations, solar farms, and utility-scale photovoltaic systems where higher current capacities and longer cable runs are required. With a current capacity of 70A, this cable is suitable for main DC feeders from combiner boxes, connections to central inverters, and any application where voltage drop over distance must be minimized. The larger conductor cross-section reduces resistive losses (3.39 Ω/km compared to 5.09 Ω/km for 4mm²), making it the preferred choice for systems where maximizing energy harvest efficiency is critical. Despite the increased conductor size, the cable maintains excellent flexibility with only a 6.1mm overall diameter, enabling straightforward routing and termination.
截面積為 6mm² 的 SOLAR6 電纜專為需要更高載流量和更長電纜敷設的大型商業安裝、太陽能農場和公用事業規模光伏系統而設計。該電纜具有 70A 的載流量，適用於從匯流箱出發的主直流饋線、與集中式逆變器的連接，以及任何需要最小化距離電壓降的應用。較大的導體截面積降低了電阻損耗（3.39 Ω/km，相比 4mm² 的 5.09 Ω/km），使其成為需要最大化能量收集效率的系統首選。儘管導體尺寸增加，電纜仍保持出色的柔韌性，外徑僅為 6.1mm，便於敷設和端接。
Complete Specifications完整規格
| Product Code產品編碼 | Core Sizemm² | Conductor導體類型 | Overall Dia.外徑 (mm) | Current Capacity載流量 (A) | Resistance @20°C電阻 (Ω/km) | Sheath Colour護套顏色 | Lengths長度 (m) |
|---|---|---|---|---|---|---|---|
| SOLAR6 | 6 | Fine-Stranded Tinned Cu | 6.1 | 70 | 3.39 | Black / Red | 100, 500 |
Technical Comparison 技術對比
SOLAR4 vs SOLAR6 ComparisonSOLAR4 與 SOLAR6 對比
| Parameter參數 | SOLAR44mm² | SOLAR66mm² | Difference差異 |
|---|---|---|---|
| Cross-Section 截面積 | 4 mm² | 6 mm² | +50% |
| Current Capacity 載流量 | 55 A | 70 A | +27% |
| Overall Diameter 外徑 | 5.6 mm | 6.1 mm | +9% |
| Resistance @20°C 電阻 | 5.09 Ω/km | 3.39 Ω/km | -33% |
| Power Loss (at 50A, 100m) | 127W | 85W | -33% |
| Voltage Rating (DC) | 1500V | 1500V | Same |
| Temperature Range | -40°C to +90°C | -40°C to +90°C | Same |
| Bending Radius | 5×D (28mm) | 5×D (30.5mm) | Similar |
Selection Guide by System Size按系統規模選型指南
| System Type系統類型 | Typical Size典型容量 | Recommended Cable推薦電纜 | Typical Application典型應用 |
|---|---|---|---|
| Residential Rooftop | 3-10 kWp | SOLAR4 | Panel interconnection, string cables |
| Small Commercial | 10-50 kWp | SOLAR4 / SOLAR6 | Depending on string current and length |
| Large Commercial | 50-500 kWp | SOLAR6 | Main DC feeders, combiner to inverter |
| Solar Farm / Utility | 500+ kWp | SOLAR6 | Long run DC cables, main distribution |
Selection Tip: For cable runs under 15 meters with currents below 50A, SOLAR4 offers the best cost-effectiveness. For longer runs or higher currents, SOLAR6’s lower resistance significantly reduces energy losses. In large installations, the energy savings from using 6mm² cable often exceed the additional material cost within 2-3 years of operation. 選型提示：對於電流低於 50A 且長度低於 15 米的電纜敷設，SOLAR4 提供最佳的性價比。對於更長的敷設或更高的電流，SOLAR6 較低的電阻顯著降低能量損耗。在大型安裝中，使用 6mm² 電纜節省的能量通常在 2-3 年運行期內超過額外的材料成本。
Cable Construction 電纜結構
Layer-by-Layer Construction逐層結構
The construction of solar cables is specifically optimized for the demanding requirements of photovoltaic installations. Each component is selected for longevity under continuous UV exposure and extreme temperature cycling, ensuring reliable performance throughout the 25+ year expected lifespan of modern solar installations.
光伏電纜的結構專門針對光伏安裝的嚴苛要求進行優化。每個組件都經過選擇，以確保在持續紫外線照射和極端溫度循環下的長壽命，確保在現代太陽能裝置預期的 25 年以上壽命期間可靠運行。
1. Tinned Copper Conductor鍍錫銅導體
Fine-stranded Class 5 tinned copper provides excellent flexibility and superior corrosion resistance compared to bare copper, critical for long-term outdoor performance.
2. XLPO/XLPE InsulationXLPO/XLPE絕緣
Cross-linked polyolefin or polyethylene insulation provides excellent dielectric strength, thermal stability, and resistance to electron-beam and UV degradation.
3. Outer Sheath (XLPO)外護套（XLPO）
Cross-linked polyolefin outer sheath provides exceptional UV resistance, weather resistance, and mechanical protection. Black for UV stability, red available for positive identification.
Material Properties & Performance材料特性與性能
| Property特性 | Specification規格 | Benefit優勢 |
|---|---|---|
| UV Resistance | EN 50618 UV Test | 25+ years outdoor exposure |
| Ozone Resistance | EN 50396 | No cracking or degradation |
| Water Absorption | < 0.5 mg/cm² | Maintains insulation integrity |
| Acid/Alkali Resistance | EN 60811-404 | Suitable for varied environments |
| Flame Retardancy | IEC 60332-1-2 | Self-extinguishing |
| Halogen Free | IEC 60754 | Safe in fire conditions |
Installation Note: Always use MC4-compatible connectors rated for 1500V DC when terminating solar cables. Ensure proper crimping with appropriate tools and verify polarity before connection. Cable routing should avoid sharp edges and provide appropriate support at intervals not exceeding 500mm to prevent mechanical stress. 安裝說明：端接光伏電纜時，始終使用額定 1500V DC 的 MC4 兼容連接器。使用適當的工具確保正確壓接，並在連接前驗證極性。電纜敷設應避開尖銳邊緣，並在不超過 500mm 的間隔處提供適當支撐，以防止機械應力。
Applications & Installation 應用與安裝
Typical Applications典型應用
Solar cables form the critical DC power distribution network within photovoltaic systems, carrying generated power from solar panels through to the inverter where it is converted to AC for use or export. The cables must maintain their performance characteristics across all seasons and weather conditions, from frozen winter installations to scorching summer rooftop temperatures that can exceed 80°C. Proper cable selection considering both current capacity and voltage drop is essential for maximizing the energy yield of the PV system and ensuring compliance with electrical safety standards.
光伏電纜構成光伏系統內關鍵的直流電力分配網絡，將太陽能電池板產生的電力輸送到逆變器，在那裡轉換為交流電以供使用或併網。電纜必須在所有季節和天氣條件下保持其性能特性，從嚴寒冬季安裝到可能超過 80°C 的酷熱夏季屋頂溫度。正確選擇電纜（同時考慮載流量和電壓降）對於最大化光伏系統的發電量和確保符合電氣安全標準至關重要。
Installation Considerations安裝注意事項
MC4 Connector CompatibilityMC4連接器兼容性
Use high-quality MC4 or MC4-EVO compatible connectors rated for 1500V DC. Ensure proper crimping and weatherproof assembly.
Bending Radius Compliance彎曲半徑合規
Maintain minimum 5×D bending radius during installation to prevent insulation damage and ensure long-term reliability.
Temperature Derating溫度降額
Apply current derating factors when cables are exposed to ambient temperatures above 30°C or routed in bundles.
Voltage Drop Calculation電壓降計算
Ensure total DC cable voltage drop does not exceed 3% (ideally <1%) to maximize system efficiency.
📚 Technical Standards & References | 技術標準與參考資料
- EN 50618 – Electric cables for photovoltaic systems (CENELEC)
- TÜV Rheinland – PV Cable Certification (TÜV Testing & Certification)
- IEC 62930 – Electric cables for photovoltaic systems (International Electrotechnical Commission)
- UL 4703 – Photovoltaic Wire Standard (Underwriters Laboratories)
- ISO 9001:2015 – Quality Management Systems (International Organization for Standardization)
- IET Wiring Regulations – Solar PV Installation Guidelines (The Institution of Engineering and Technology)
- NREL Solar Research – Best Practices (National Renewable Energy Laboratory)
- Solar Power World – Industry Standards (Industry Publication)
Contact Us | 聯繫我們
Anhui Feichun Special Cable Co., Ltd. 安徽飛純特種電纜有限公司
