High and Low Temperature Damp Heat Test Chamber: Standard for Damp Heat Testing of Photovoltaic Modules

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High and Low Temperature Damp Heat Test Chamber: Standard for Damp Heat Testing of Photovoltaic Modules

Posted Date: 2024-01-12

As the world pays increasing attention to renewable energy, solar photovoltaic technology is one of the leaders, and its stability and durability have become the focus of scientific research and market. In order to ensure that photovoltaic modules can work stably in various harsh environments, the photovoltaic module damp heat test came into being. This test is not only a severe test of the performance of photovoltaic modules, but also a safeguard for future energy supply.

The photovoltaic module damp heat test is a test that simulates the durability performance of photovoltaic modules in high temperature and high humidity environments. It places photovoltaic modules under specific environmental conditions and evaluates the reliability and performance changes of the modules in extreme environments through long-term exposure and monitoring. This kind of test can not only accelerate the evaluation of the durability of photovoltaic modules, but also provide important data support for the photovoltaic industry and promote the continuous progress of technology.

In order to ensure the accuracy and reliability of the test, the International Electrotechnical Commission (IEC) has developed a series of international standards related to damp heat testing of photovoltaic modules, such as IEC 61215, IEC 61646 and IEC 61730. These standards specify the specific conditions, parameters and test methods of the test in detail, providing unified evaluation standards for the global photovoltaic industry.

The IEC61730 standard for hygrothermal testing of photovoltaic modules is an international standard that mainly stipulates the long-term operation requirements for ground photovoltaic modules, including structural requirements, test procedures and judgment requirements. This standard is to evaluate the reliability of photovoltaic modules in harsh environments and provide important data support. However, it should be noted that the IEC61730 standard itself is not specifically aimed at damp heat testing, but is an overall safety certification standard for photovoltaic modules. When conducting damp heat tests, you may need to refer to certain relevant parts or clauses in this standard, as well as other IEC standards directly related to damp heat tests, such as IEC 61215, etc.

In the heat and humidity test, photovoltaic modules need to withstand temperatures up to (85±2)°C and relative humidity (85±5)%. In such an environment, the materials and structures inside the components will be severely challenged. Through continuous testing ranging from 1,000 to 1,048 hours, researchers can gain an in-depth understanding of the performance changes of components in extreme environments, thereby providing strong support for their performance in practical applications.

After the test, the photovoltaic modules also need to undergo a series of inspections and tests. First, in an environment where the temperature is (23±5)°C and the relative humidity is less than 75%, the module needs to remain open circuit for 2 to 4 hours. Researchers will then carefully inspect the components for serious cosmetic defects as described in IEC 61215-1 item 8 and conduct a wet leakage test. These tests are all designed to ensure that components remain in good working order after experiencing extreme environments.

Finally, the electrical performance testing of photovoltaic modules is also an essential part. This includes evaluation of aspects such as efficiency, current output and voltage characteristics. Through these tests, researchers can have a comprehensive understanding of the performance of the components after the hot and humid test, providing strong support for the further development of the photovoltaic industry.

In summary, the damp heat test of photovoltaic modules is an important link to ensure the stable development of photovoltaic technology. As the global demand for renewable energy continues to grow, we have reason to believe that in the days to come, photovoltaic technology will continue to exert its unique advantages and contribute more to the sustainable development of mankind.

If you want to know the relevant parameters, specifications and models of the test equipment, you can visit the "Guangdong Bell" official website and consult relevant technical personnel.

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