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NEK IEC 60891:2021

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Abstract

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.The content of the corrigendum 1 (2024-10) has been included in this copy.

Document information

  • Standard from NEK
  • Published:
  • Edition: 3.0
  • Version: 1
  • Document type: NAT
  • ICS 27.160
  • National Committee NEK/NK82

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