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EVS-EN IEC 60891:2021

Photovoltaic devices - Procedures for temperature and irradiance corrections to measured I-V characteristics

General information
Valid from 15.12.2021
Base Documents
IEC 60891:2021; EN IEC 60891:2021
Directives or regulations
None
Standard history
Status
Date
Type
Name
15.12.2021
Main
06.05.2010
Main
This document defines procedures to be followed for temperature and irradiance corrections to the measured I-V (current-voltage) characteristics (also known as I-V curves) of photovoltaic (PV) devices. It also defines the procedures used to determine factors relevant to these corrections. Requirements for I-V measurement of PV devices are laid down in IEC 60904-1 and its relevant subparts. The PV devices include a single solar cell with or without a protective cover, a sub-assembly of solar cells, or a module. A different set of relevant parameters for I-V curve correction applies for each type of device. The determination of temperature coefficients for a module (or subassembly of cells) may be calculated from single cell measurements, but this is not the case for the internal series resistance and curve correction factor, which should be separately measured for a module or subassembly of cells. Refer to Annex A for alternative procedures for series resistance determination. The use of I-V correction parameters are valid for the PV device for which they have been measured. Variations may occur within a production lot or the type class.
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