1. What is AD8?

AD8 is one of the common protection levels in international waterproof standards. According to the IEC (International Electrotechnical Commission), the AD8 rating primarily describes the waterproof performance of equipment or cables when submerged in water. Devices or cables with an AD8 rating can be continuously submerged in water without affecting their functionality, making them particularly suitable for humid environments and underwater operations.

Different Waterproof Levels for Various Scenarios

Different waterproof levels are applicable to various contexts. Common ratings include:

• AD2: Suitable for occasional short-term contact with water or use in humid environments.

• AD4: Suitable for environments with frequent water splashes, but not for prolonged immersion.

• AD6: Suitable for temporary immersion scenarios, such as rain or brief flooding.

• AD8: Suitable for long-term immersion, allowing for stable operation underwater, especially in humid or aquatic environments.

Cables with an AD8 rating are particularly crucial for outdoor photovoltaic projects as they can withstand extreme weather conditions, ensuring the stability and safety of solar systems.

2. Applications of AD8 Solar Cables

AD8 Solar Cables, known for their superior waterproofing, are widely applied in the following scenarios:

• Rooftop PV Systems: Ideal for installations on building roofs, capable of withstanding rain, humidity, and occasional pooling.

• Ground-mounted PV Plants: Especially suitable for low-lying areas that are prone to water accumulation.

• Floating PV Systems: Specifically designed for water-based solar systems, where cables must remain submerged for extended periods, requiring high waterproof ratings.

• Extreme Climate Environments: AD8 Solar Cables maintain exceptional performance in humid, rainy, and submerged environments, suitable for various extreme conditions.

3. Advantages of AD8 Solar Cables

AD8 Solar Cables offer several key advantages that ensure safety and durability in different applications:

• High Waterproof Performance: The AD8 rating allows cables to be submerged in water for extended periods, preventing issues such as short circuits and corrosion.

• Aging Resistance: Constructed from durable materials, they withstand environmental factors like UV rays and ozone, prolonging cable life.

• Temperature Resistance: They maintain stable electrical performance under extreme temperatures, suitable for diverse climatic conditions.

• High Mechanical Strength: With strong tensile and compressive resistance, they are less prone to damage from external physical pressures, making them suitable for complex installation environments.

4. Differences Between AD8 Solar Cables and 2PfG 2750 Solar Cables

While both AD8 Solar Cables and 2PfG 2750 solar cables are commonly used in photovoltaic systems, they differ in design, application areas, and standards:

• Waterproof Rating: AD8 Solar Cables possess the AD8 rating for long-term submersion, whereas 2PfG 2750 cables typically have lower waterproof ratings, making them more suitable for dry environments.

• Certification Standards: 2PfG 2750 solar cables comply with the German VDE certification (certified by TUV), primarily for the EU market, while AD8 Solar Cables meet IEC international standards, allowing for broader global application.

• Durability and Lifespan: AD8 Solar Cables exhibit higher aging resistance and mechanical strength, suitable for harsh outdoor conditions, while 2PfG 2750 cables are more appropriate for general outdoor environments.

• Application Scenarios: AD8 Solar Cables can be used in water-based or humid environments, whereas 2PfG 2750 cables are typically used in rooftop solar systems or ground-mounted plants in drier areas.

In summary, AD8 Solar Cables, with their strong waterproofing and durability, better meet the demands of photovoltaic systems in harsh outdoor environments, while 2PfG 2750 cables are more suited for relatively mild climatic conditions.