ISO/TS 21486:2022

ISO/TS 21486:20212022(E)
ISO/TC 160/SC 1/WG 9
BSI
Glass in building — Retesting requirements for laminated solar photovoltaic glass for
use in buildings
First edition
Date: 2021-12-15

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2022-02

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ISO/TS 21486:2022(E)
© ISO 20212022
All rights reserved. Unless otherwise specified, or required in the context of its implementation,
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Published in Switzerland.
© ISO 2022 – All rights reserved iii

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ISO/TS 21486:2022(E)
Contents Page
Foreword . 5
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Retesting criteria . 1
4.1 Glass modifications . 1
4.2 Solar cell modifications . 2
4.3 Interlayer modifications . 3
4.4 Interconnector modifications . 4
4.5 Insulating strip modifications . 5
4.6 Termination modifications . 6
5 Testing requirements . 7
5.1 Appearance . 7
5.2 Dimensions and edge finishing . 7
5.3 High-temperature test . 7
5.4 Damp heat test . 7
5.5 Radiation test . 7
5.6 Thermal cycling test . 7
5.7 Humidity freeze test . 7
5.8 Hot-spot endurance test. 7
5.9 Impact test . 7
5.10 Ball drop test . 7
5.11 Insulation test . 7
5.12 Wet leakage current test . 8
5.13 Robustness of terminations test . 8
6 Retesting samples . 8
7 Testing procedures . 8
8 Test report . 8
9 Others . 8
iv © ISO 2022 – All rights reserved

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ISO/TS 21486:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national
standards bodies (ISO member bodies). The work of preparing International Standards is normally
carried out through ISO technical committees. Each member body interested in a subject for which a
technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part in
the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
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expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 1,
Product considerations.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2022 – All rights reserved v

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TECHNICAL SPECIFICATION ISO/TS 21486:2022(E)

Glass in building — Retesting guideline for laminated solar
photovoltaic glass for use in buildings
1 Scope
This document specifies requirements for retesting laminated solar photovoltaic (PV) glass for use in
buildings.
This document applies to laminated solar PV glass.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 12543-5, Glass in building — Laminated glass and laminated safety glass — Part 5: Dimensions and
edge finishing
ISO/TS 18178:2018, Glass in building — Laminated solar photovoltaic glass for use in buildings
ISO 12543-5, Glass in building – Laminated glass and laminated safety glass – Part 5: Dimensions and
edge finishing
ISO 29584, Glass in building — Pendulum impact testing and classification of safety glass
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminologicalterminology databases for use in standardization at the following
addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 Retesting criteria
4.1 Glass modifications
For glass modification, retesting shall be performed in accordance with Table 1.
Table 1 — Parameters, changes and retesting items for glass
Parameters Changes Retesting item
1) Appearance
Thickness Decrease: >20 % 2) Dimensions and edge finishing
3) High-temperature test
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ISO/TS 21486:2022(E)
4) Hot-spot endurance test
5) Ball drop test
6) Impact test
a) Increase, or
Does not require retesting
b) Decrease: ≤20 %
1) Impact test
Toughened glass change to non-toughened
glass
2) ball drop test
1) Radiation test
2) High-temperature test
Enamelled glass change to non-enamelled
3) Thermal cycling test (200 cycles)
glass or
...