IEC 62108:2022

Concentrator photovoltaic (CPV) modules and assemblies - Design qualification and type approval

IEC 62108:2022 specifies the minimum requirements for the design qualification and type approval of concentrator photovoltaic (CPV) modules and assemblies suitable for long-term operation in general open-air climates as defined in IEC 60721-2-1. The object of this test document is to determine the electrical, mechanical, and thermal characteristics of the CPV modules and assemblies and to show, as far as possible within reasonable constraints of cost and time, that the CPV modules and assemblies are capable of withstanding prolonged exposure in climates described in the scope.

Modules et ensembles photovoltaïques à concentration - Qualification de la conception et homologation

L'IEC 62108:2022 spécifie les exigences minimales relatives à la qualification de la conception et l'homologation des modules et ensembles photovoltaïques à concentration (CPV - concentrator photovoltaic) pour une utilisation de longue durée dans les climats généraux d'air libre, comme cela est défini dans l'IEC 60721-2-1. Le présent document d'essai a pour objet de déterminer les caractéristiques électriques, mécaniques et thermiques des modules et ensembles CPV et de montrer, autant que possible avec des contraintes de coût et de temps raisonnables, que les modules et ensembles CPV peuvent supporter une exposition prolongée aux climats définis dans le domaine d'application.

General Information

• Status: Published
• Publication Date: 01-Jun-2022
• ICS: 27.160 - Solar energy engineering
• Technical Committee: TC 82 - Solar photovoltaic energy systems
• Drafting Committee: WG 7 - TC 82/WG 7
• Current Stage: PPUB - Publication issued
• Start Date: 17-Jun-2022
• Completion Date: 02-Jun-2022

Relations

• Revises: IEC 62108:2016 - Concentrator photovoltaic (CPV) modules and assemblies - Design qualification and type approval
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62108 ®
Edition 3.0 2022-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Concentrator photovoltaic (CPV) modules and assemblies – Design qualification
and type approval
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 62108 ®
Edition 3.0 2022-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colourcolour
insinsiidede
Concentrator photovoltaic (CPV) modules and assemblies – Design qualification
and type approval
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-3825-7

– 2 – IEC 62108:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 5
1 Scope and object . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Sampling . 10
5 Marking . 11
6 Testing . 11
7 Pass criteria . 12
8 Report . 20
9 Modifications . 21
10 Test procedures . 21
10.1 Visual inspection . 21
10.1.1 General . 21
10.1.2 Procedure . 21
10.1.3 Major visual defects . 22
10.1.4 Requirements . 22
10.2 Electrical performance measurement . 22
10.2.1 Purpose . 22
10.2.2 Outdoor side-by-side I-V measurement . 22
10.2.3 Solar simulator I-V measurement . 24
10.2.4 Dark I-V measurement . 24
10.3 Ground path continuity test . 25
10.3.1 General . 25
10.3.2 Purpose . 25
10.3.3 Procedure . 25
10.3.4 Requirements . 25
10.4 Electrical insulation test . 26
10.4.1 Purpose . 26
10.4.2 Procedure . 26
10.4.3 Requirements . 26
10.5 Wet insulation test . 27
10.5.1 Purpose . 27
10.5.2 Procedure . 27
10.5.3 Requirements . 27
10.6 Thermal cycling test . 27
10.6.1 Purpose . 27
10.6.2 Test sample . 28
10.6.3 Procedure . 28
10.6.4 Procedure for active cooling system . 30
10.6.5 Requirements . 30
10.7 Damp heat test . 31
10.7.1 Purpose . 31
10.7.2 Test sample . 31
10.7.3 Procedure . 31
10.7.4 Requirements . 32

10.8 Humidity freeze test . 32
10.8.1 Purpose . 32
10.8.2 Test sample . 32
10.8.3 Procedure . 32
10.8.4 Requirements . 32
10.9 Hail impact test . 33
10.9.1 Purpose . 33
10.9.2 Apparatus . 33
10.9.3 Procedure . 34
10.9.4 Requirements . 34
10.10 Water spray test.
10.10.1 General .
10.10.2 Purpose .
10.10.3 Procedure .
10.10.4 Requirements .
10.10 Dust and water ingress protection test . 35
10.10.1 Purpose . 35
10.10.2 Procedure . 35
10.10.3 Requirements . 35
10.11 Bypass/blocking diode thermal test . 36
10.11.1 Purpose . 36
10.11.2 Test sample . 36
10.11.3 Apparatus . 36
10.11.4 Procedure . 36
10.11.5 Requirements . 37
10.11.6 Procedure 2 – Alternate method . 37
10.12 Robustness of terminations test . 38
10.12.1 Purpose . 38
10.12.2 Types of terminations . 35
10.12.2 Procedure . 39
10.12.3 Requirements . 39
10.13 Mechanical load test . 39
10.13.1 Purpose . 39
10.13.2 Procedure . 40
10.13.3 Requirements . 40
10.14 Off-axis beam damage test . 41
10.14.1 General . 41
10.14.2 Purpose . 41
10.14.3 Special case . 41
10.14.4 Procedure . 41
10.14.5 Requirements . 41
10.15 Outdoor exposure test . 42
10.15.1 Purpose . 42
10.15.2 Procedure . 42
10.15.3 Requirements . 42
10.16 Hot-spot endurance test . 42
Annex A (informative) Summary of test conditions and requirements . 43
Annex B (normative) Retesting guideline . 46

– 4 – IEC 62108:2022 RLV ©
...

IEC 62108 ®
Edition 3.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Concentrator photovoltaic (CPV) modules and assemblies – Design qualification
and type approval
Modules et ensembles photovoltaïques à concentration – Qualification de la
conception et homologation
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 19 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
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IEC 62108 ®
Edition 3.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Concentrator photovoltaic (CPV) modules and assemblies – Design qualification
and type approval
Modules et ensembles photovoltaïques à concentration – Qualification de la
conception et homologation
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-3824-0
– 2 – IEC 62108:2022 © IEC 2022
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Sampling . 10
5 Marking . 11
6 Testing . 11
7 Pass criteria . 12
8 Report . 20
9 Modifications . 21
10 Test procedures . 21
10.1 Visual inspection . 21
10.1.1 General . 21
10.1.2 Procedure . 21
10.1.3 Major visual defects . 22
10.1.4 Requirements . 22
10.2 Electrical performance measurement . 22
10.2.1 Purpose . 22
10.2.2 Outdoor side-by-side I-V measurement . 22
10.2.3 Solar simulator I-V measurement . 24
10.2.4 Dark I-V measurement . 24
10.3 Ground path continuity test . 25
10.3.1 General . 25
10.3.2 Purpose . 25
10.3.3 Procedure . 25
10.3.4 Requirements . 25
10.4 Electrical insulation test . 26
10.4.1 Purpose . 26
10.4.2 Procedure . 26
10.4.3 Requirements . 26
10.5 Wet insulation test . 27
10.5.1 Purpose . 27
10.5.2 Procedure . 27
10.5.3 Requirements . 27
10.6 Thermal cycling test . 27
10.6.1 Purpose . 27
10.6.2 Test sample . 28
10.6.3 Procedure . 28
10.6.4 Procedure for active cooling system . 30
10.6.5 Requirements . 30
10.7 Damp heat test . 31
10.7.1 Purpose . 31
10.7.2 Test sample . 31
10.7.3 Procedure . 31
10.7.4 Requirements . 32

10.8 Humidity freeze test . 32
10.8.1 Purpose . 32
10.8.2 Test sample . 32
10.8.3 Procedure . 32
10.8.4 Requirements . 32
10.9 Hail impact test . 33
10.9.1 Purpose . 33
10.9.2 Apparatus . 33
10.9.3 Procedure . 34
10.9.4 Requirements . 34
10.10 Dust and water ingress protection test . 34
10.10.1 Purpose . 34
10.10.2 Procedure . 35
10.10.3 Requirements . 35
10.11 Bypass/blocking diode thermal test . 35
10.11.1 Purpose . 35
10.11.2 Test sample . 35
10.11.3 Apparatus . 35
10.11.4 Procedure . 36
10.11.5 Requirements . 36
10.11.6 Procedure 2 – Alternate method . 36
10.12 Robustness of terminations test . 37
10.12.1 Purpose . 37
10.12.2 Procedure . 38
10.12.3 Requirements . 38
10.13 Mechanical load test . 38
10.13.1 Purpose .
...