When installing solar panels in areas with heavy snow, an increased load capacity of 5400Pa is advisable. This has been included in the IEC 61215 ed. 2. Nowadays many solar manufacturers produce according to this requirement. Solar system installers who do installation in areas with heavy snow should definitely use products with an increased load capacity: 5400 Pa.
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The IEC 61646 certification is for Thin-Film PV modules and is in many aspects identical to the international standard IEC 61215 for crystalline modules. An additional test takes the degradation behavior of amorphous silicon due to temperature and irradiance exposure into account.
Basically, certifications per se do not tell much about the quality of a module. If you buy a solar module with IEC 61215/ 61730/ 61701 etc. certifications, it means that the certification-holding manufacturer managed to produce a few modules of that type that passed a standard's (e.g. IEC 61215) tests at the time of applying for certification. When testing, the (prepared and) submitted modules undergo HALTs (highly accelerated life tests) that are not representative of standard real-world conditions. Moreover, most certification bodies do not perform regular check ups after the certification has been issued, leaving in theory (and praxis) many opportunities for (bad) manufacturers to cut quality corners while on paper holding that certification. Nevertheless, depending on where you want to install your panels, the certifications may still be required as per your national requirements or for example in order to apply for FIT.
Hi Mashiur,To obtain IEC 61215 on your solar panels, you'll need to submit your panels with a certification body, such as TUV Sud, TUV Rheinland or VDE, and pass their stringent tests.It's quite a long process and will take at least 2-3 months and those certification bodies aren't cheap.. if you're using a standard product, it's sometimes easier to obtain panels from a manufacturer that's already certified.
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