Solar Quality Assurance and Quality Control (QA/QC)
Timely identification and correction of quality defects, as well as an adequate implementation of the quality control program, are vital to ensure the optimal long-term performance of solar
or lowest operating temperature as specified by manufacturer. Standards also exist and are being developed for inverter safety – these standards intersect with reliability when particular failure mechanisms they examine are considered to potentially lead to shock or fire.
Accepted standardized tests are lacking to ensure reliability of inverters for the PV industry. This section discusses the status of tests used or being developed to gauge reliability, including design qualification tests.
Applied safety standards for PV inverters provide a rudimentary level of reliability testing, insofar as they relate to safety. Considering the lack of generally accepted reliability standards, some apply draft standards in development and portions of standards from other industries.
In recent years, however, awareness of the importance of effec-tive quality assurance has increased in the PV sector. It turns out that some of the installed systems have con-siderable quality deficiencies, and these have led to the non-achievement of expected output.
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