EN IEC 62788-6-2:2020

Measurement procedures for materials used in photovoltaic modules - Part 6-2: General tests - Moisture permeation testing of polymeric materials

IEC 62788-6-2:2020 provides methods for measuring the steady-state water vapour transmission rate (WVTR), water vapour permeability (P), diffusivity (D), solubility (S), and moisture breakthrough time (Ƭ10) (defined as the time to reach 10 % of the steady state WVTR) for polymeric materials such as encapsulants, edge seals, frontsheets and backsheets. These measurements can be made at selected temperatures and humidity levels as deemed appropriate for evaluation of their performance in PV modules. Measurement is accomplished by inspection of the transient WVTR curve and by fitting it to a theoretical Fickian model. This document is best applied to monolithic films. If multilayer films are used, the D and S values are only apparent values, but the steady-state values can still be measured.

Messverfahren für Werkstoffe, die in Photovoltaik-Modulen verwendet werden - Teil 6-2: Allgemeine Prüfungen - Permeationsprüfung mit polymeren Materialien

Procédures de mesure des matériaux utilisés dans les modules photovoltaïques - Partie 6-2: Essais génériques - Essais de perméation à l’humidité des matériaux polymères

l’IEC 62788-6-2:2020 fournit des méthodes de mesure du coefficient de transmission de la vapeur d’eau (WVTR – water vapour transmission rate) en régime établi, de la perméabilité de la vapeur d'eau (P), de la diffusivité (D), de la solubilité (S) et du temps d’infiltration de l’humidité (Ƭ10) (défini comme étant le temps permettant d’atteindre 10 % du WVTR en régime établi) pour les matériaux polymères tels que les encapsulants, les joints d’étanchéité périphériques et les couches avant et arrière. Ces mesurages peuvent être effectués à des températures et niveaux d’humidité choisis jugés appropriés pour l’évaluation de leurs performances dans les modules PV. Le mesurage est effectué par l’examen de la courbe du WVTR transitoire et par l’ajustement de cette courbe au modèle fickien théorique. Le présent document présente la meilleure application aux films monolithiques. Si des films multicouches sont utilisés, les valeurs de D et S sont uniquement des valeurs apparentes, mais les valeurs en régime établi peuvent tout de même être mesurées.

Merilni postopki za materiale, uporabljene v fotonapetostnih modulih - 6-2. del: Splošni preskusi - Preskušanje pronicanja vlage pri polimernih materialih

General Information

• Status: Published
• Publication Date: 07-May-2020
• ICS: 27.160 - Solar energy engineering
• Technical Committee: CLC/TC 82 - Solar photovoltaic energy systems
• Drafting Committee: IEC/TC 82 - IEC_TC_82
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 08-May-2020
• Completion Date: 08-May-2020
• Ref Project: SIST EN IEC 62788-6-2:2020 - Measurement procedures for materials used in photovoltaic modules - Part 6-2: General tests - Moisture permeation testing with polymeric materials

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 62788-6-2:2020
01-julij-2020
Merilni postopki za materiale, uporabljene v fotonapetostnih modulih - 6-2. del:
Splošni preskusi - Preskušanje pronicanja vlage pri polimernih materialih
Measurement procedures for materials used in photovoltaic modules - Part 6-2: General
tests - Moisture permeation testing with polymeric materials
Messverfahren für Werkstoffe, die in Photovoltaik-Modulen verwendet werden - Teil 6-2:
Allgemeine Prüfungen - Permeationsprüfung mit polymeren Materialien
Procédures de mesure des matériaux utilisés dans les modules photovoltaïques - Partie
6-2: Essais génériques - Essais de perméation à l’humidité des matériaux polymères
Ta slovenski standard je istoveten z: EN IEC 62788-6-2:2020
ICS:
27.160 Sončna energija Solar energy engineering
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN IEC 62788-6-2:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62788-6-2:2020


EUROPEAN STANDARD EN IEC 62788-6-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2020
ICS 27.160

English Version
Measurement procedures for materials used in photovoltaic
modules - Part 6-2: General tests - Moisture permeation testing
of polymeric materials
(IEC 62788-6-2:2020)
Procédures de mesure des matériaux utilisés dans les Messverfahren für Werkstoffe, die in Photovoltaik-Modulen
modules photovoltaïques - Partie 6-2: Essais génériques - verwendet werden - Teil 6-2: Allgemeine Prüfungen -
Essais de perméation à l'humidité des matériaux polymères Permeationsprüfung mit polymeren Materialien
(IEC 62788-6-2:2020) (IEC 62788-6-2:2020)
This European Standard was approved by CENELEC on 2020-04-23. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard 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 European Standard 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 IEC 62788-6-2:2020 E

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EN IEC 62788-6-2:2020 (E)
European foreword
The text of document 82/1659/FDIS, future edition 1 of IEC 62788-6-2, prepared by IEC/TC 82 "Solar
photovoltaic energy systems" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 62788-6-2:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-01-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-04-23
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 62788-6-2:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61730-1 NOTE Harmonized as EN IEC 61730-1


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SIST EN IEC 62788-6-2:2020
EN IEC 62788-6-2:2020 (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
...