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IEC 61701
Edition 3.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Photovoltaic (PV) modules – Salt mist corrosion testing
Modules photovoltaïques (PV) – Essai de corrosion au brouillard salin
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IEC 61701
Edition 3.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Photovoltaic (PV) modules – Salt mist corrosion testing
Modules photovoltaïques (PV) – Essai de corrosion au brouillard salin
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-8232-8
– 2 – IEC 61701:2020 © IEC 2020
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Samples . 6
5 Test summary . 6
6 Test sequence . 7
6.1 General . 7
6.2 Stabilization . 7
6.3 Initial and final measurements of non-concentrator modules . 7
6.4 Initial and final measurements of concentrator photovoltaic (CPV) modules . 7
6.5 Salt mist test procedure . 7
6.6 Cleaning and recovery . 7
6.7 Measurements after salt mist . 8
6.8 Bypass diode test . 8
6.8.1 Purpose . 8
6.8.2 Procedure . 8
6.8.3 Requirements . 8
7 Requirements . 8
7.1 General . 8
7.2 Non-concentrator PV modules. 8
7.3 Concentrator photovoltaic (CPV) modules . 9
8 Test report . 9
Annex A (normative) Guidance for the selection of appropriate test method
according to IEC 60068-2-52 . 12
A.1 Overview. 12
A.2 Recommendations for applying this document and selecting test methods 1
through 8 . 12
A.2.1 General . 12
A.2.2 Test method 1 . 13
A.2.3 Test method 2 . 13
A.2.4 Test methods 3 to 6 . 13
A.2.5 Test methods 7 and 8 . 13
Figure 1 – Salt mist corrosion testing sequence for non-concentrator PV modules . 10
Figure 2 – Salt mist corrosion testing sequence for concentrator photovoltaic (CPV)
modules . 11
Table A.1 – Simplified guidance for determining corrosivity classifications according to
ISO 9223 and test methods correlating to one-year corrosivity based on mass loss
of steel coupons . 14
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC (PV) MODULES –
SALT MIST CORROSION TESTING
FOREWORD
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International Standard IEC 61701 has been prepared by IEC technical committee 82: Solar
photovoltaic energy systems.
This third edition cancels and replaces the second edition issued in 2011. This edition
constitutes a technical revision.
The main technical changes with respect to the previous edition are as follows:
• The scope has been updated to better reflect the applicability of the Standard.
• Test methods and requirements have been condensed and aligned with the new editions
of IEC 61215-1, IEC 61215-2, and IEC 61730-2. References to crystalline silicon versus
thin film technologies have been eliminated. The old Figure 2 on the thin film test
sequence has been eliminated.
• The salt mist test references have been updated to harmonize with changes to IEC
60068-2-52.
– 4 – IEC
...