ISO/TS 18178:2018

TECHNICAL ISO/TS
SPECIFICATION 18178
First edition
2018-10
Glass in building — Laminated solar
photovoltaic glass for use in buildings
Verre dans la construction — Verre feuilleté photovoltaïque pour
utilisation dans les bâtiments
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Description of components . 2
4.1 General . 2
4.2 Types of glass . 3
4.3 Typical types of solar cells . 4
4.4 Interlayer . 4
4.5 Interconnector . 4
4.6 Insulating strip . 4
4.7 Termination . 4
5 Requirements . 5
5.1 General . 5
5.2 Appearance . 5
5.2.1 Major visual defects . 5
5.2.2 Defects in the main area . 6
5.2.3 Defects in the edge area . 6
5.3 Dimensions and edge finishing . 6
5.4 High temperature test . 6
5.5 Damp heat test . 6
5.6 Radiation test . 6
5.7 Thermal cycling test . 7
5.8 Humidity freeze test . 7
5.9 Measurement of NMOT . 7
5.10 Hot-spot endurance test . 7
5.11 Impact test . 7
5.12 Ball drop test . 7
5.13 Insulation test . 7
5.14 Wet leakage current test . 7
5.15 Robustness of terminations test . 8
6 Test specimens. 8
7 Test methods . 9
7.1 Test sequences. 9
7.2 Visual inspection . 9
7.3 High temperature test .10
7.4 Damp heat test .10
7.5 Radiation test .10
7.6 Thermal cycling test .10
7.7 Humidity-freeze test .10
7.8 Measurement of NMOT .10
7.9 Hot-spot endurance test .10
7.10 Ball drop test .10
7.10.1 Purpose .10
7.10.2 Specimen.10
7.10.3 Apparatus .10
7.10.4 Procedure .11
7.11 Insulation test .11
7.12 Wet leakage current test .12
7.13 Robustness of terminations test .12
8 Designation .12
Bibliography .13
iv © ISO 2018 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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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).
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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.
TECHNICAL SPECIFICATION ISO/TS 18178:2018(E)
Glass in building — Laminated solar photovoltaic glass for
use in buildings
1 Scope
This document specifies requirements of appearance, durability and safety, test methods and
designation for laminated solar photovoltaic (PV) glass for use in buildings.
This document is applicable to building-integrated photovoltaics (BIPV). Building-attached
photovoltaics (BAPV) can refer to this document.
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)
...