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IEC 62892
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Extended thermal cycling of PV modules – Test procedure
Cycle thermique étendu de modules PV – Procédure d'essai
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IEC 62892
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Extended thermal cycling of PV modules – Test procedure
Cycle thermique étendu de modules PV – Procédure d'essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-6598-7
– 2 – IEC 62892:2019 © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Sampling . 7
5 Marking and documentation . 7
6 Modifications . 8
7 Test procedure . 8
7.1 Initial evaluations . 8
7.2 Thermal cycling test . 8
7.2.1 Purpose . 8
7.2.2 Apparatus . 8
7.2.3 Procedure . 8
7.3 Final evaluations . 9
7.4 Requirements . 10
8 Reporting. 10
Annex A (normative) Calculation of the required number of thermal cycles . 11
Annex B (informative) Acceleration factors based on deployed climate . 14
Bibliography . 17
Figure A.1 – Number of equivalent cycles as a function of maximum cycle temperature
over maximum module operating temperature . 11
Figure A.2 – Survivorship plot for a Weibull distribution with a shape parameter of 6
and a survivorship probability of 95% at 500 cycles . 12
Figure B.1 – Plot of module cell temperature over the course of one day to illustrate
the maximum temperature, maximum temperature change and temperature reversal
terms . 14
Figure B.2 – Combination of factors that indicate extended thermal cycling is advised
for a specific location . 15
Table 1 – Number of required thermal cycles, N . 9
R
Table A.1 – Effect of sample size on test time . 13
Table B.1 – Cell temperature factors . 15
Table B.2 – Module and mounting specific model parameters . 16
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
EXTENDED THERMAL CYCLING OF PV MODULES –
TEST PROCEDURE
FOREWORD
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International Standard IEC 62892 has been prepared by IEC technical committee 82: Solar
photovoltaic energy systems.
The text of this International Standard is based on the following documents:
FDIS Report on voting
82/1537/FDIS 82/1560/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
– 4 – IEC 62892:2019 © IEC 2019
The committee has decided that the contents of this document will remain unchanged until the
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the specific document. At this date, the document will be
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INTRODUCTION
The IEC 61215 series defines test requirements for the design qualification of flat-plate PV
modules for long-term operation in general open-air climates. IEC TS 62941 provides technical
guidance in application of the type-approval testing.
This document, IEC 628
...