In the photovoltaic energy sector, ensuring maximum efficiency and durability of photovoltaic modules is essential to gain customer trust and meet the expectations of maximum generation from the Photovoltaic Plant.
A Resun Solar, committed to excellence, carries out rigorous electroluminescence tests on all modules produced in its factory, ensuring the delivery of top-quality products.
What is electroluminescence testing?
O electroluminescence test (EL test – Electroluminescence test) is an essential procedure in quality control of photovoltaic modules. It works similarly to an X-ray, allowing manufacturers to view internal details of solar cells that would not be visible to the naked eye.
This test is capable of identifying microcracks, breaks, damaged cells or any other anomaly in the module cells before they are sent to market.
How does the electroluminescence test work?
Preparing the module for testing
The photovoltaic module is prepared and positioned to undergo analysis. This process takes place in a specific area of the factory, ensuring that all components are correctly connected and ready for testing, in accordance with applicable standards.
Among them, the most important is IEC TS 60904 – which standardizes the quality criteria of extracted data. Some of the procedures for preparing the test are the lighting of the environment, temperature, way of capturing images, way of processing the images and guidance on how to analyze the test results.
Application of electric current
During the test, it is an electric current is applied to the module. This causes the photovoltaic cells to emit a faint glow – called electroluminescence effect.
This test is not visible to the naked eye, but is captured by special cameras, where the image generated indicates possible failures.
For example, the percentage difference in hue between cells – with images varying across a spectrum of white, gray and black colors. A hue close to white indicates maximum cell efficiency and a hue close to black indicates cell inefficiency.
Analysis of generated images
The images captured during the process are analyzed by experts, who look for signs of microcracks (also called “microcracks”), dark spots, edges and junctions, breaks in cells, or other irregularities that may compromise the module’s efficiency.
Every detail is checked to ensure that only products that meet Resun standards are approved.
Resun's rigorous quality standards
At Resun, we understand that a photovoltaic module is a long-term investment, and the quality of each component is essential to guarantee its durability and efficiency. Therefore, we apply the electroluminescence test to all manufactured modules, following a strict quality control standard.
High-tech equipment
Our factory has state-of-the-art equipment, which guarantees high-resolution images during the electroluminescence test, allowing a detailed analysis of the cells.
Specialized professionals
We have a team of qualified engineers and technicians who analyze each image generated during testing. They are responsible for identifying any anomalies and ensuring that only modules that meet our standards move on to the next phase of production.
Transparency and commitment
Resun values transparency in its manufacturing and quality control processes. We share with our partners and customers the assurance that each module that reaches the market has undergone a rigorous inspection process, including electroluminescence testing.
Quality that guarantees trust
Our commitment to quality is what sets us apart in the solar energy market. By performing electroluminescence testing on all modules, we ensure that our products are free from hidden defects, offering customers a reliable, high-performance solution.
At Resun, we believe that every detail makes a difference, which is why we invest in processes that guarantee the excellence of our solar modules.
Choosing Resun modules means choosing the safety of a tested and approved product, ready to offer the best performance in residential, commercial and industrial projects.
The opinions and information expressed are the sole responsibility of the author and do not necessarily represent the official position of the author. Canal Solar.
