IEC TS 62782:2016

IEC TS 62782 ®
Edition 1.0 2016-03
TECHNICAL
SPECIFICATION
Photovoltaic (PV) modules – Cyclic (dynamic) mechanical load testing

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IEC TS 62782 ®
Edition 1.0 2016-03
TECHNICAL
SPECIFICATION
Photovoltaic (PV) modules – Cyclic (dynamic) mechanical load testing

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-3223-1

– 2 – IEC TS 62782:2016 © IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 6
4 Apparatus . 6
5 Initial measurements . 6
6 Procedure . 7
7 Final measurements . 7
8 Test report. 8
Annex A (informative) Subsequent testing . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC (PV) MODULES –
CYCLIC (DYNAMIC) MECHANICAL LOAD TESTING

FOREWORD
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Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC TS 62782, which is a technical specification, has been prepared by IEC technical
committee 82: Solar photovoltaic energy systems.

– 4 – IEC TS 62782:2016 © IEC 2016
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
82/971/DTS 82/1014A/RVC
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

PHOTOVOLTAIC (PV) MODULES –
CYCLIC (DYNAMIC) MECHANICAL LOAD TESTING

1 Scope
This technical specification provides a test method for performing a cyclic (dynamic)
mechanical load test in which the module is supported at the design support points and a
uniform load normal to the module surface is cycled in alternating negative and positive
directions. This test may be utilized to evaluate if components within the module including
solar cells, interconnect ribbons and/or electrical bonds within the module are susceptible to
breakage or if edge seals are likely to fail due to the mechanical stresses encountered during
installation and operation. This test can be performed at any module temperature within the
normal operating temperature range. Since the results have been determined to depend on
the module temperature during the application of the load it is critical to maintain the module
at a constant temperature during the performance of this test.
This technical specification has historically been applied to rigid modules. It cannot be applied
to flexible modules unless they are designed to be mounted in a rigid manner. In which case,
the cyclic (dynamic) mechanical load test can be applied to the flexible module in its rigid
mounting system.
This test has been written as a standalone technical specification, but it is likely to be used in
conjunction with other test standards. Typically, this test itself will not result in power loss, but
when followed by additional stress tests like thermal cycling and humidity freeze, the damage
done by the mechanical cycling results in power loss that would not have occurred due only to
the thermal cycling and humidity freeze tests. For example, the transportation testing
procedure (IEC 62759) includes the requirements for such a cyclic (dynamic) mechanical load
test followed by 50 thermal cycles and 10 humidity freeze cycles.
2 Normative references
The following documents, in whole or in part, are normatively refere
...