IEC 60904-9 - In Compliance Magazine

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Defines classifications of solar simulators for use in indoor measurements of terrestrial photovoltaic devices; solar simulators are classified as A, B or C for each of the three categories based on criteria of spectral distribution match, irradiance non-uniformity on the test plane and temporal instability.

Basic Understanding of IEC Standard Testing for Photovoltaic Panels
The photovoltaic (PV) industry has experienced incredibly fast transformation after year 2000 as a result of extraordinary technology breakthroughs, from the material level up to large-scale module manufacturing.

With the PV industry expected to grow consistently in the coming years, two main questions are capturing the attention among market operators:
1. What constitutes a “good quality” module?
2. How “reliable” will it be in the field?

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