1、Measurement procedures formaterials used in photovoltaicmodulesPart 1-5: Encapsulants Measurement of change in linear dimensions of sheet encapsulation material resulting from applied thermal conditionsBS EN 62788-1-5:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15
2、06National forewordThis British Standard is the UK implementation of EN 62788-1-5:2016. It isidentical to IEC 62788-1-5:2016.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/82, Photovoltaic Energy Systems.A list of organizations represented on this committee can be o
3、btained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 84251 1ICS 27.160Compliance with
4、a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62788-1-5:2016EUROPEAN STAND
5、ARD NORME EUROPENNE EUROPISCHE NORM EN 62788-1-5 December 2016 ICS 27.160 English Version Measurement procedures for materials used in photovoltaic modules - Part 1-5: Encapsulants - Measurement of change in linear dimensions of sheet encapsulation material resulting from applied thermal conditions
6、IEC 62788-1-5:2016) Procdures de mesure des matriaux utiliss dans les modules photovoltaques - Partie 1-5: Encapsulants - Mesurage de la variation des dimensions linaires des matriaux dencapsulation en couches minces rsultant des conditions thermiques appliques (IEC 62788-1-5:2016) Messverfahren fr
7、 Werkstoffe, die in Photovoltaikmodulen verwendet werden - Teil 1-5: Verkapselungsstoffe - Messung der linearen Lngennderung von Verkapselungsstoffen in Folienform aufgrund der angewendeten thermischen Bedingungen (IEC 62788-1-5:2016) This European Standard was approved by CENELEC on 2016-08-02. CEN
8、ELEC 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
9、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 CE
10、N-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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungar
11、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique
12、 Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62788-1-5:2016 E BS EN 62788-1-5:2016EN 62788-1-5:2016 2 Europea
13、n foreword The text of document 82/1114/FDIS, future edition 1 of IEC 62788-1-5, prepared by IEC/TC 82 “Solar photovoltaic energy systems“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62788-1-5:2016. The following dates are fixed: latest date by which the document has
14、 to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-06-09 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-12-09 Attention is drawn to the possibility that some of the elements of
15、this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62788-1-5:2016 was approved by CENELEC as a European Standard without any modification. BS
16、EN 62788-1-5:2016EN 62788-1-5:2016 3 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated r
17、eferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date i
18、nformation on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60216-4-1 - Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens EN 60216-4-1 - ISO 291
19、 Plastics - Standard atmospheres for conditioning and testing EN ISO 291 2008 ISO 11357-2 - EN ISO 11357-2 2014 ISO 11357-3 - EN ISO 11357-3 2013 ISO/IEC 17025 2005 General requirements for the competence of testing and calibration laboratories - - ASTM C778-06 - Standard Specification for Standard
20、 Sand - - BS EN 62788-1-5:2016 2 IEC 62788-1-5:2016 IEC 2016 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references. 5 3 Principle 5 4 Apparatus 6 5 Test specimens . 6 5.1 Specimen preparation . 6 5.2 Number of specimens 7 5.3 Preconditioning of specimens 8 6 Procedure . 8 7 Calculation and expressi
21、on of results . 9 8 Test report. 10 Annex A (informative) Implementation and design of the test 11 Bibliography . 12 Figure 1 Schematic identifying the location of specimens within a sample set 7 Figure 2 Schematic identifying the designated measurement locations (AA, BB, CC, DD, EE, aa, bb, cc, dd,
22、 and ee) for each specimen 9 BS EN 62788-1-5:2016IEC 62788-1-5:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MEASUREMENT PROCEDURES FOR MATERIALS USED IN PHOTOVOLTAIC MODULES Part 1-5: Encapsulants Measurement of change in linear dimensions of sheet encapsulation material resulting fro
23、m applied thermal conditions FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions conc
24、erning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). The
25、ir preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates c
26、losely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the rel
27、evant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the
28、 technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximu
29、m extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies pr
30、ovide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC o
31、r its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expen
32、ses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Atten
33、tion is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62788-1-5 has been prepared by IEC technical committee 82: Solar photovo
34、ltaic energy systems. The text of this standard is based on the following documents: FDIS Report on voting 82/1114/FDIS 82/1134/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in
35、 accordance with the ISO/IEC Directives, Part 2. BS EN 62788-1-5:2016 4 IEC 62788-1-5:2016 IEC 2016 A list of all parts in the IEC 62788 series, published under the general title Measurement procedures for materials used in photovoltaic modules, can be found on the IEC website. The committee has dec
36、ided that the contents of this 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 amende
37、d. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. BS EN 62788-1-5:2016IEC 62788-1-5:2016 IEC
38、2016 5 MEASUREMENT PROCEDURES FOR MATERIALS USED IN PHOTOVOLTAIC MODULES Part 1-5: Encapsulants Measurement of change in linear dimensions of sheet encapsulation material resulting from applied thermal conditions 1 Scope This part of IEC 62788 provides a method for measuring the maximum representati
39、ve change in linear dimensions of encapsulation sheet material in an unrestricted thermal exposure as might or might not be seen during photovoltaic (PV) module fabrication. The standard does not take into account any resulting stresses which may develop due to restricted dimensional changes or fric
40、tion during module fabrication. Data obtained using this method may be used by encapsulation material manufacturers for the purpose of quality control of their encapsulation material as well as for reporting in product datasheets. Data obtained using this method may be used by PV module manufacturer
41、s for the purpose of material acceptance, process development, design analysis, or failure analysis. This method may also be used to examine other materials, such as backsheets and frontsheets as described in IEC 62788-2. Certain details of the test (including specimen size and substrate) are specif
42、ied for that application in 62788-2. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the ref
43、erenced document (including any amendments) applies. IEC 60216-4-1, Electrical insulating materials Thermal endurance properties Part 4-1: Ageing ovens Single-chamber ovens ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories ISO 291:2008, Plastics Stan
44、dard atmospheres for conditioning and testing ISO 11357-2:2013, Plastics Differential scanning calorimetry (DSC) Part 2: Determination of glass transition temperature and glass transition step height ISO 11357-3:2011, Plastics Differential scanning calorimetry (DSC) Part 3: Determination of temperat
45、ure and enthalpy of melting and crystallization ASTM C77806, Standard specification for standard sand 3 Principle Encapsulation material (in sheet form) may change dimensions when processed during the fabrication of a PV module. The change in dimensions is typically caused by stresses formed BS EN 6
46、2788-1-5:2016 6 IEC 62788-1-5:2016 IEC 2016 in the encapsulant during its fabrication (e.g., extrusion). Subsequent changes during module fabrication (e.g., lamination, including: heating, cooling, and pressurization) can cause stress within the module that may result in deleterious phenomenon inclu
47、ding: the formation of bubbles (voids), movement or fracture of internal components, or delamination of the encapsulation at its interface(s). A standardized characterization of the maximum change in dimensions is defined in this procedure. The change in dimensions is characterized on sand to minimi
48、ze friction (or adhesion) to standardize the result. The stress and strain generated during module lamination are complicated by additional factors not considered here. The effects specific to the processing (lamination) procedure are not necessarily addressed with this procedure. 4 Apparatus The fo
49、llowing equipment shall be utilized to perform the test: a) A die, scissors, or other cutting device that may be used to accurately cut-to-size the samples of encapsulation material. b) A soft-tipped marker or equivalent device used to indicate the specimen orientation relative to the encapsulation stock. c) A calibrated linear measuring device with the resolution of at least 0,5 mm. Examples include (but are not limited to) a vernier calliper, ruler, o
