This part of IEC 61 853 describes the calculation of PV module energy rating values.IEC 61 853-1 describes requirements for evaluating PV module performance at various temperatures and irradiances in terms of power (watts) rating. IEC 61 853-2 describes test procedures for determining module temperature from irradiance, ambient temperature and wind speed, a method for measuring angle of incidence effects, and spectral responsivity.IEC 61 853-4 describes the standard reference climatic profiles (standard environmental data sets) that are used for calculating energy rating values.
