Cover IEC 60891:2021

IEC 60891:2021

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

Ausgabedatum: 2021-10
Edition: 3.0
Sprache: EN-FR - zweisprachig englisch/französisch
Seitenzahl: 71 VDE-Artnr.: 250424


IEC 60891:2021 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.
This third edition cancels and replaces the second edition published in 2009. This edition includes the following significant technical changes with respect to the previous edition:
- adds guidance on which correction procedure shall be used depending on application;
- introduces translation procedure 4 applicable to c-Si technologies with unknown temperature coefficients;
- introduces various clarifications in existing procedures to improve measurement accuracy and reduce measurement uncertainty;
- adds an informative annex for supplementary methods that can be used for series resistance determination.