The international photovoltaic industry is evolving rapidly, and modern solar jobsites now demand safer, lighter, and more tariff-efficient cabling solutions Traditional copper conductor cables have dominated the market for years than rising crude oil costs and increasing demand for large-scale PVDC improvised solar systems Thedayday CABDC alloy conductors becomes an important innovation in photovoltaic engineering.

Among the main manufacturers in this regard, SOWELL SOLAR and Zhejiang Sowell Electric Co Ltd stand out as leaders in photovoltaic cable technology. The employer became the first manufacturer in the arena to achieve TUV certification for tin-plated copper-clad aluminum conductor photovoltaic cables. Their products meet leading international standards including EN50618, IEC62930 and UL4703, making them suitable for busy global solar operations

One of the most revolutionary products advanced through the company is the PV2000DC-TCA and TCCA conductor solar cable series, designed to deliver remarkable electrical performance, progressive corrosion resistance, and long-term operational reliability .

Why Aluminum Alloy DC PV CABLE Technology Is Important

Ten years later, photovoltaic requirements have evolved through several leading global certifications, e.g.

• VDE-AR-E 2283-4
• 2 PFG 1169
• EN50618
• IEC62930
• UL4703

Among these, the EN50618 standard remains the most widely used globally outside UL4703-based markets. However, as solar system costs continue decreasing every year, competition within photovoltaic components has become more intense. This created demand for lighter and lower-cost cable materials without compromising safety or performance.

To address this challenge, TUV Rheinland officially introduced the 2 PFG 2642 aluminum alloy cable standard, covering conductor sizes from 10mm² to 400mm². The standard combines EN50618 requirements with additional tests specifically designed for aluminum alloy conductors.

This advancement opened the door for high-performance aluminum alloy photovoltaic cables capable of replacing traditional tinned copper cables in many solar applications.

The Safety of Aluminum Alloy Conductors

One of the most common concerns in the solar industry is whether aluminum alloy conductors can safely replace conventional tinned copper conductors.

The primary discussion focuses on electrochemical reactions between copper and aluminum. Because copper and aluminum have different electrical potentials, moisture and air exposure can create electrochemical activity under certain conditions.

However, practical engineering solutions already exist.

Copper-aluminum transition terminals have been used successfully for decades in electrical systems without major safety problems. Two important reasons explain this:

1. The contact surfaces are isolated from air and moisture.
2. Aluminum naturally forms an oxide layer that prevents deeper corrosion.

This means properly designed aluminum alloy DC PV CABLE systems present no significant technical risk when installed correctly.

SOWELL SOLAR Certified PV1500DC-AL Series

The aluminum alloy conductor photovoltaic cable series developed by SOWELL SOLAR officially passed TUV certification under the 2 PFG 2642 standard. These products use advanced aluminum alloy or tin-plated alloy conductors optimized for photovoltaic systems.

The current product versions include:

• PV1500DC-AL 1x4.0 mm²
• PV1500DC-AL 1x6.0 mm²
• PV1500DC-AL 1x10 mm²

These cables are specifically designed for:

• Solar module connections
• Combiner box systems
• Inverter connections
• Ground-mounted photovoltaic plants
• Utility-scale solar farms

The cables use 125°C low smoke halogen-free crosslinked polyolefin (XLPO) insulation and sheath materials, providing:

• UV resistance
• Long service life
• Excellent thermal stability
• Low smoke performance
• Environmental durability

Technical Specifications of PV1500DC-AL Cables

The TCCA conductor solar cable structure significantly improves corrosion resistance while maintaining stable electrical conductivity. Tin-plated alloy technology also allows compatibility with standard MC4 connectors in many installations.

Advantages of PV2000DC-TCA and TCCA Conductor Solar Cable

The PV2000DC-TCA cable series offers several important advantages compared with traditional copper photovoltaic cables.

1. Reduced Material Cost

Aluminum alloy conductors cost less than pure copper, helping reduce overall solar project expenses, especially in utility-scale installations.

2. Lightweight Installation

Aluminum alloy cables are lighter than copper cables, making transportation and installation easier on large solar farms.

3. Excellent UV Resistance

The XLPO insulation system provides strong UV protection, allowing direct outdoor exposure under sunlight for decades.

4. Long Operational Life

These cables are designed for a service life exceeding 25 years under normal photovoltaic operating conditions.

5. Improved Corrosion Resistance

The tin-plated conductor surface isolates aluminum from air and moisture, reducing oxidation and improving long-term stability.

Current Carrying Capacity of DC PV CABLE

The current carrying capacity of photovoltaic cables is critical for system safety and efficiency.

According to IEC60364-5-52 recommendations, grouping reduction factors should be applied in multi-cable installations.

For most general photovoltaic applications, SOWELL recommends using the Safe Current A I reference values.

Applications of Aluminum Alloy DC PV CABLE

Modern photovoltaic systems increasingly use aluminum alloy cables in:

• Solar power plants
• Rooftop photovoltaic systems
• Utility-scale energy projects
• Combiner box to inverter connections
• Solar tracker systems
• Ground-mounted installations

Unlike traditional YJV or YJLV cables originally designed for AC systems, certified photovoltaic cables can operate safely under direct sunlight without requiring additional protective conduit systems.

This makes them ideal for outdoor solar applications where long-term UV resistance and weather durability are essential.

Why Choose SOWELL SOLAR

SOWELL SOLAR and Zhejiang Sowell Electric Co Ltd continue leading innovation in photovoltaic cable manufacturing through:

• International TUV certifications
• Advanced conductor technologies
• Reliable engineering performance
• Competitive project costs
• Long-term durability
• Compliance with global photovoltaic standards

As solar energy systems continue expanding worldwide, advanced DC PV CABLE solutions like PV2000DC-TCA and TCCA conductor solar cable products are becoming increasingly important for improving efficiency, reducing installation costs, and supporting the future growth of renewable energy infrastructure.