BS EN 60904-5:2011 PDF

Scope: This part of IEC 60904 describes the preferred method for determining the equivalent cell temperature (ECT) of PV devices (cells, modules and arrays of one type of module), for the purposes of comparing their thermal characteristics, determining NOCT (nominal operating cell temperature) and translating measured I-V characteristics to other temperatures. This standard applies to linear devices with logarithmic VOC dependence on irradiance and in stable conditions. It may be used for all technologies but one has to verify that there is no preconditioning effect influencing the measurement.

BS EN 60904-5:2011 Referenced Document

IEC 60891 Photovoltaic devices - Procedures for temperature and irradiance corrections to measured I-V characteristics*， 2021-10-27 Update
IEC 60904-1 Photovoltaic devices - Part 1: Measurement of photovoltaic current-voltage characteristics*， 2020-09-25 Update
IEC 60904-2 Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices*， 2023-06-19 Update
IEC 60904-7 Photovoltaic devices - Part 7: Computation of the spectral mismatch correction for measurements of photovoltaic devices*， 2019-08-20 Update
IEC 61215 Crystalline silicon terrestrial photovoltaic (PV) modules - Design qualification and type approval
IEC 61829 Photovoltaic (PV) array - On-site measurement of current-voltage characteristics*， 2015-10-01 Update
ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories [Standard in French]*， 2017-11-01 Update

2011 BS EN 60904-5:2011 Photovoltaic devices. Determination of the equivalent cell temperature (ECT) of photovoltaic (PV) devices by the open-circuit voltage method
0000 BS EN 60904-5:1996