What are the steps to follow for the qualification testing by similarity?
If you, the manufacturer, change your method or materials of building a previously fully qualified photovoltaic (PV) module, we probably can, by using the IEC61215/IEC61646 Retesting Guideline (2004), qualify your new module by similarity. Some sequence of the qualification test most probably will have to be performed, but only rarely do changes require full re-qualification. There are twelve categories of changes we look at, each requiring different tests to qualify by similarity. These categories include: change in cell technology modification to encapsulation system modification to superstrate change in module size modification to backsheet/substrate modification to frame and/or mounting structure modification to junction box/electrical termination change in cell interconnect materials or technique change in electrical circuit lower or higher power output (by 10%) in identical package including size and using identical cell process change in cell size qualification of a frameless mo
