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IEC 62788-7-3
Edition 1.1 2024-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Measurement procedures for materials used in photovoltaic modules –
Part 7-3: Accelerated stress tests – Methods of abrasion of PV module external
Surfaces
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IEC 62788-7-3
Edition 1.1 2024-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Measurement procedures for materials used in photovoltaic modules –
Part 7-3: Accelerated stress tests – Methods of abrasion of PV module external
Surfaces
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-9506-9
REDLINE VERSION – 2 – IEC 62788-7-3:2022+AMD1:2024 CSV
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Artificial linear machine abrasion test (SAT01). 8
4.1 Principle . 8
4.2 Apparatus . 8
4.2.1 Artificial linear machine abrasion apparatus . 8
4.2.2 Brush . 9
4.2.3 Abrasive medium (dry) . 10
4.2.4 Abrasive medium (wet slurry) . 11
4.3 Test specimens . 11
4.3.1 Materials and geometry . 11
4.3.2 Number of replicate specimens . 12
4.3.3 Reference material . 12
4.4 Test procedure . 13
4.4.1 Setting up the apparatus and specimen . 13
4.4.2 Performing the abrasion test . 13
4.5 Specimen preparation for examination after testing . 14
5 Artificial rotary machine abrasion test (SAT02) . 14
5.1 General . 14
5.2 Apparatus . 14
5.2.1 Artificial rotary machine abrasion apparatus . 14
5.2.2 Brush . 15
5.2.3 Abrasive medium (dry) . 16
5.2.4 Abrasive medium (wet/slurry) . 16
5.3 Test specimens . 16
5.4 Test procedure . 16
5.5 Specimen preparation for examination after testing . 16
6 Falling sand test (SAT03) . 16
6.1 Principle . 16
6.2 Apparatus . 17
6.2.1 Falling sand apparatus . 17
6.2.2 Abrasive medium . 17
6.3 Test specimens . 17
6.3.1 General . 17
6.3.2 Number of replicate specimens . 17
6.4 Test procedure . 18
6.5 Specimen preparation for examination after testing . 18
7 Forced sand impingement test (SAT04) . 18
7.1 Principle . 18
7.2 Apparatus . 18
7.2.1 Forced sand impingement apparatus . 18
7.2.2 Abrasive medium . 19
7.3 Test specimens . 19
7.4 Procedure . 19
7.5 Specimen preparation for examination after testing . 20
8 Test report . 20
Annex A (informative) References describing the durability of materials to linear
abrasion. 21
Bibliography . 22
Figure 1 – Schematics showing the arrangement of bristle tufts on the linear brush . 10
Figure 12 – Schematic showing the arrangement of bristle tufts on the rotary brush . 16
Table 1 – Examples of suitable reference materials . 13
REDLINE VERSION – 4 – IEC 62788-7-3:2022+AMD1:2024 CSV
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MEASUREMENT PROCEDURES FOR MATERIALS
USED IN PHOTOVOLTAIC MODULES –
Part 7-3: Accelerated stress tests –
Methods of abrasion of PV module external surfaces
FOREWORD
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This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 62788-7-3 edition 1.1 contains the first edition (2022-02) [documents 82/1987/FDIS
and 82/2009/RVD] and its amendment 1 (2024-07) [documents 82/2259/FDIS and
82/2277/RVD].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red
text. A separate Final version with all changes accepted is available in this publication.
IEC 62788-7-3 has been prepared by IEC technical committee 82: Solar
...