IEC 62790:2020 describes safety requirements, constructional requirements and tests for junction boxes up to 1 500 V DC for use on photovoltaic modules in accordance with class II of IEC 61140:2016. Photovoltaic (PV) modules and components are products which have to withstand the diverse effects of extreme conditions during their lifetime. The wide range of climatic conditions and possible mechanical stresses must be taken into account when designing a PV component. To assess whether the. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. We can test in VDE. Manufacturers, suppliers and importers of photovoltaic (PV) components including connectors, junction boxes, cables and inverters must make absolutely sure that their products are tested and certified according to national and international expectations defined by established directives and. does not purport to include all the necessary prov sions of a contract. Users are responsible for its correct application ards prac ltaik-Module - Sicherheitsanforderungen und Prüfungen (IEC 6 n Standard exists in three official versions (English, French, German). A version in any other language. Apply in: “damp-heat” (85°C, 85% RH for 1000 hours), and “thermal-cycle” (-40°C↔85°C for 200 cycles), protocols as in IEC 61215; “creep” (105°C, nominally dry for 200 hours) as in IEC 61730-2.