EN IEC 62788-1-7:2020

Measurement procedures for materials used in photovoltaic modules - Part 1-7: Encapsulants - Test procedure of optical durability

IEC 62788-1-7:2020 is designed as a more rigorous qualification test, using accelerated UV exposure at elevated temperature to determine whether polymeric encapsulants can suffer loss of optical transmittance. IEC 61215-2 already includes a UV preconditioning test (MQT 10), however, the parameters for that test only represent a limited level of exposure (~weeks of UV dose). This test procedure is intended for representative coupon specimens, applying stress at a greater intensity (designed relative to Phoenix, AZ), using a radiation spectrum that is more similar to the terrestrial solar spectrum, and using a duration of exposure that is more relevant to the PV application (i.e., equivalent to several years of outdoor exposure). This test quantifies the degradation rate of encapsulants so that the risk of the materials losing optical transmittance during operation in the terrestrial environments can be managed. The quantitative correlation between climate (or location of use), a specific application (utility installation, residential-installation, roof-mount, rack-mount, use of a tracker, the system electrical configuration and its operation), and the test can be established for each specific encapsulant material, but is beyond the scope of this document.

Messverfahren für Werkstoffe, die in Photovoltaik-Modulen verwendet werden - Teil 1-7: Verkapselungsstoffe - Testverfahren der optischen Beständigkeit

Procédures de mesure des matériaux utilisés dans les modules photovoltaïques - Part 1-7: Encapsulants - Procédure d’essai de la durabilité optique

l’IEC 62788-1-7:2020 est conçue comme un essai de qualification plus rigoureux, qui utilise une exposition aux UV accélérée à température élevée destinée à déterminer si les encapsulants polymérisés peuvent présenter une perte de facteur de transmission optique. L’IEC 61215-2 comprend déjà un essai de préconditionnement aux UV (MQT 10), toutefois, les paramètres de cet essai ne représentent qu’un niveau limité d’exposition (~semaines de dose d’UV). La présente procédure d'essai concerne les éprouvettes de coupon représentatives et applique des contraintes d’une plus grande intensité (conçues par rapport à Phoenix, AZ), en utilisant un spectre de rayonnement qui est plus proche du spectre lumineux solaire terrestre et une durée d'exposition plus pertinente pour l’application PV (c’est à dire équivalente à plusieurs années d'exposition en extérieur). Cet essai quantifie la vitesse de dégradation des encapsulants de manière à pouvoir gérer le risque de perte de facteur de transmission optique des matériaux au cours du fonctionnement dans l’environnement terrestre. La corrélation quantitative entre le climat (ou le lieu d'utilisation), une application spécifique (installation de service public, installation résidentielle, montage sur toit, montage sur châssis, utilisation d'un traqueur, configuration électrique du système et son fonctionnement) et l’essai peut être établie pour chaque matériau d’encapsulation spécifique mais n’entre pas dans le domaine d’application du présent document.

Merilni postopki za materiale, uporabljene v fotonapetostnih modulih - 1-7. del: Enkapsulanti - Preskusni postopki za optično trajnost

General Information

• Status: Published
• Publication Date: 11-Jun-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: 12-Jun-2020
• Completion Date: 12-Jun-2020
• Ref Project: SIST EN IEC 62788-1-7:2020 - Measurement procedures for materials used in photovoltaic modules - Part 1-7: Encapsulants - Test procedure of optical durability

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 62788-1-7:2020
01-september-2020
Merilni postopki za materiale, uporabljene v fotonapetostnih modulih - 1-7. del:
Enkapsulanti - Preskusni postopki za optično trajnost
Measurement procedures for materials used in photovoltaic modules - Part 1-7:
Encapsulants - Test procedure of optical durability
Messverfahren für Werkstoffe, die in Photovoltaik-Modulen verwendet werden - Teil 1-7:
Verkapselungsstoffe - Testverfahren der optischen Beständigkeit
Procédures de mesure des matériaux utilisés dans les modules photovoltaïques - Part 1-
7: Encapsulants - Procédure d’essai de la durabilité optique
Ta slovenski standard je istoveten z: EN IEC 62788-1-7:2020
ICS:
27.160 Sončna energija Solar energy engineering
SIST EN IEC 62788-1-7:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD EN IEC 62788-1-7

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2020
ICS 27.160

English Version
Measurement procedures for materials used in photovoltaic
modules - Part 1-7: Encapsulants - Test procedure of optical
durability
(IEC 62788-1-7:2020)
Procédures de mesure des matériaux utilisés dans les To be completed
modules photovoltaïques - Part 1-7: Encapsulants - (IEC 62788-1-7:2020)
Procédure d'essai de la durabilité optique
(IEC 62788-1-7:2020)
This European Standard was approved by CENELEC on 2020-05-26. 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 62788-1-7:2020 E

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EN IEC 62788-1-7:2020 (E)

European foreword
The text of document 82/1669/FDIS, future edition 1 of IEC 62788-1-7, prepared by IEC/TC 82 "Solar
photovoltaic energy systems" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 62788-1-7:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-02-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-05-26
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 62788-1-7:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60904-3 NOTE Harmonized as EN IEC 60904-3
IEC 61730-2 NOTE Harmonized as EN IEC 61730-2
IEC 62788-2 (series) NOTE Harmonized as EN IEC 62788-2 (series)


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EN IEC 62788-1-7:2020 (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 Public
...