Measurement procedures for materials used in photovoltaic modules - Part 1-6: Encapsulants - Test methods for determining the degree of cure in Ethylene-Vinyl Acetate

Messverfahren für Werkstoffe, die in Photovoltaik-Modulen verwendet werden - Teil 1-6: Verkapselungsstoffe - Prüfverfahren zur Bestimmung des Aushärtungsgrads der Ethylen-Vinyl-Acetat-Verkapselung

Procédures de mesure des matériaux utilisés dans les modules photovoltaïques - Partie 1-6: Encapsulants - Méthodes d'essai pour déterminer le degré de durcissement dans l'éthylène-acétate de vinyle

Merilni postopki za materiale, uporabljene v fotonapetostnih modulih - 1-6. del: Enkapsulanti - Preskusne metode za določanje stopnje strjevanja v etilen-vinilnih acetatnih enkapsulantih - Dopolnilo A1

General Information

Status
Published
Publication Date
08-Sep-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Sep-2020
Due Date
12-Nov-2020
Completion Date
09-Sep-2020

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SLOVENSKI STANDARD
SIST EN 62788-1-6:2017/A1:2020
01-oktober-2020
Merilni postopki za materiale, uporabljene v fotonapetostnih modulih - 1-6. del:

Enkapsulanti - Preskusne metode za določanje stopnje strjevanja v etilen-vinilnih

acetatnih enkapsulantih - Dopolnilo A1
Measurement procedures for materials used in photovoltaic modules - Part 1-6:
Encapsulants - Test methods for determining the degree of cure in Ethylene-Vinyl
Acetate

Messverfahren für Werkstoffe, die in Photovoltaik-Modulen verwendet werden - Teil 1-6:

Verkapselungsstoffe - Prüfverfahren zur Bestimmung des Aushärtungsgrads der
Ethylen-Vinyl-Acetat-Verkapselung

Procédures de mesure des matériaux utilisés dans les modules photovoltaïques - Partie

1-6: Encapsulants - Méthodes d'essai pour déterminer le degré de durcissement dans

l'éthylène-acétate de vinyle
Ta slovenski standard je istoveten z: EN 62788-1-6:2017/A1:2020
ICS:
27.160 Sončna energija Solar energy engineering
SIST EN 62788-1-6:2017/A1:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 62788-1-6:2017/A1:2020
---------------------- Page: 2 ----------------------
SIST EN 62788-1-6:2017/A1:2020
EUROPEAN STANDARD EN 62788-1-6:2017/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 27.160
English Version
Measurement procedures for materials used in photovoltaic
modules - Part 1-6: Encapsulants - Test methods for determining
the degree of cure in Ethylene-Vinyl Acetate
(IEC 62788-1-6:2017/A1:2020)

Procédures de mesure des matériaux utilisés dans les Werkstoffe, die in photovoltaischen Modulen verwendet

modules photovoltaïques - Partie 1-6: Encapsulants - werden - Messverfahren - Teil 1-6: Verkapselungsstoffe -

Méthodes d'essai pour déterminer le degré de Prüfverfahren zur Bestimmung des Aushärtungsgrads der

durcissement dans l'éthylène-acétate de vinyle Ethylen-Vinyl-Acetat-Verkapselung
(IEC 62788-1-6:2017/A1:2020) (IEC 62788-1-6:2017/A1:2020)

This amendment A1 modifies the European Standard EN 62788-1-6:2017; it was approved by CENELEC on 2020-06-30. CENELEC

members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the

status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the

responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as

the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62788-1-6:2017/A1:2020 E
---------------------- Page: 3 ----------------------
SIST EN 62788-1-6:2017/A1:2020
EN 62788-1-6:2017/A1:2020 (E)
European foreword

The text of document 82/1691/FDIS, future IEC 62788-1-6/A1, prepared by IEC/TC 82 "Solar

photovoltaic energy systems" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN 62788-1-6:2017/A1:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-03-30

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-06-30

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 62788-1-6:2017/A1:2020 was approved by CENELEC as a

European Standard without any modification.
---------------------- Page: 4 ----------------------
SIST EN 62788-1-6:2017/A1:2020
EN 62788-1-6:2017/A1:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Add the following references:
Publication Year Title EN/HD Year
ISO 6721-1 - Plastics - Determination of dynamic mechanical EN ISO 6721-1 -
properties - Part 1: General principles
ISO 14577-1 - Metallic materials - Instrumented indentation EN ISO 14577-1 -
test for hardness and materials parameters -
Part 1: Test method
---------------------- Page: 5 ----------------------
SIST EN 62788-1-6:2017/A1:2020
---------------------- Page: 6 ----------------------
SIST EN 62788-1-6:2017/A1:2020
IEC 62788-1-6
Edition 1.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Measurement procedures for materials used in photovoltaic modules –
Part 1-6: Encapsulants – Test methods for determining the degree of cure
in Ethylene-Vinyl Acetate
Procédures de mesure des matériaux utilisés dans les modules
photovoltaïques –
Partie 1-6: Encapsulants – Méthodes d'essai pour déterminer le degré
de durcissement dans l'éthylène-acétate de vinyl
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-8209-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 62788-1-6:2017/A1:2020
– 2 – IEC 62788-1-6:2017/AMD1:2020
© IEC 2020
FOREWORD

This amendment has been prepared by IEC technical committee 82:Solar photovoltaic energy

systems.
The text of this amendment is based on the following documents:
FDIS Report on voting
82/1691/FDIS 82/1720/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base 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
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
2 Normative references
Add the following new references:

ISO 6721-1, Plastics – Determination of dynamic mechanical properties – Part 1: General

principles

ISO 14577-1, Metallic materials – Instrumented indentation test for hardness and materials

parameters – Part 1: Test method
3 Terms and definitions
Add the following new term:
3.6
degree of cure

parameter that correlates with the extent of cross-linking within the EVA

using the indentation method
Note 1 to entry: Unit: dimensionless.
5.2.1 Sampling and storage
Replace the existing subclause 5.2.1.1 with the following:
---------------------- Page: 8 ----------------------
SIST EN 62788-1-6:2017/A1:2020
IEC 62788-1-6:2017/AMD1:2020 – 3 –
© IEC 2020
5.2.1.1

Because the results for the secondary method may depend on the make of EVA, test results

may only be directly compared for the same formulation of EVA. Therefore, test specimens

should come from the same manufacturer(s) for the same fabrication lay-up configuration

(backsheet/EVA combination). Changes in the encapsulant that affect the curing process,

including but not limited to a change of the material supplier, would require validating the

correlation between G and the degree of cure. For example, if the percentage vinyl acetate

and the degree of cure (from
content in the EVA resin changes, a new correlation between G

a secondary method) should be obtained because the percentage vinyl acetate content is

known to significantly affect the viscoelastic-dependent cure characteristics of the

encapsulant.
7 Test report
Replace the existing item h) with the following:

h) identification of test method used and test instrument and other equipment used, including

the laminator and the temperature, pressure, and time settings used, when applicable. In

the case of the indentation secondary method (per correlation or usual use of method), the

test temperature, tip material, tip geometry, and tip size, maximum indentation load,

maximum indentation depth, and frequency of modulation (if applicable) shall also be

reported;
Replace the existing item i) with the following:

i) reference to sampling procedure, where relevant, including the number of tests per

specimen;
Replace the existing item k) with the following:

k) measurements (associated and their uncertainty), examinations and derived results

supported by tables, graphs, sketches and photographs as appropriate including degree of

cure, specimen mass, measured enthalpy, graphs of the enthalpy/temperature data,
graphs of the crystallization peaks, and gel content;
Add the following new clause:
8 Indentation secondary method
8.1 General

An alternative secondary method, using indentation to characterize the degree of cu

...

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