Salt mist is a corrosive agent that can reduce the output of your PV module. Salt mist corrosion usually appears near the sea or under a high level of humidity and heavy rain conditions. It can affect key modules components such as the junction box, the glass, the frames that can reduce the PV module performance and lifespan.
Eco Green Energy passed Salt Mist level 6, which is the most severe testing condition. The test including 8 weeks of intensive cyclical, corrosive salt spray and damp storage, to stimulate a harsh marine environment.
Salt Mist Corrosion Testing Standards
IEC 61701 is the testing standard for salt mist resistance for solar panels. This standard describes test sequences useful to determine the resistance of different PV modules to corrosion from salt mist. And there are six levels of corrosion resistance to the IEC 61701 standard. To get Level 6 means solar panels need to pass the test under the most severe conditions.
(Source: TÜV SÜD website)
Salt Mist Corrosion Testing Conditions
Tests are performed in professional salt spray chambers. The chamber atomizes a saltwater solution, creating fog, and leaving salt deposits around the equipment under test. Engineers carefully monitor the salt spray environment to ensure maintaining the correct salt density, pH, deposition rate, and temperature.
What Factors Caused Corrosion
Anything that contains metal is susceptible to corrosion, including metal photovoltaic components. Corrosion in your PV module will lead to a reduction of the panel production and will affect all your system’s production.
As we all know, solar panels are designed to guarantee for decades. Because the solar cells and the electrical components are protected by sealants, encapsulation polymers, and strong tempered glass. However, as time goes on, water vapor and airborne chemicals can get inside and cause rust degradation.
Normally, metals corrode faster in hot, humid environments, such as those found in tropical and coastal regions. In other words, in a less humid climate, photovoltaic system corrosion is much slower to occur.
How to Prevent Salt Mist Corrosion
First of all, make sure to work with a reliable supplier, that uses a good brand lamination machine, and which have a good process of production and good SOP for their employees. In addition, make sure that your supplier has all corrosion certifications such as Salt Mist corrosion level 6.
Keep in mind that Eco Green Energy produces solar panels only using Grade A raw materials. And most important is compliance with TUV and UL certifications.
In conclusion, all our certifications are available in the download center.
For more information regarding our PV module, feel free to contact us: email@example.com