EN 62716-2013 en Photovoltaic (PV) modules - Ammonia corrosion testing.pdf

1、BSI Standards PublicationPhotovoltaic (PV) modules Ammonia corrosion testingBS EN 62716:2013BS EN 62716:2013Incorporating corrigendum May 2014BS EN 62716:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 62716:2013. It is identical to IEC 62716:2013, incorpor

2、ating corrigendum May 2014.The UK participation in its preparation was entrusted to Technical Committee GEL/82, Photovoltaic Energy Systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary

3、 provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 88427 6ICS 27.160Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publ

4、ished under the authority of the Standards Policy and Strategy Committee on 30 September 2013.Amendments/corrigenda issued since publicationDate Text affected31 October 2014 Implementation of IEC corrigendum May 2014: Note 2 in Figure 1 amendedEUROPEAN STANDARDEN 62716NORME EUROPENNEEUROPISCHE NORMA

5、ugust 2013CENELECEuropean Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische NormungCEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any m

6、eans reserved worldwide for CENELEC members.Ref. No. EN 62716:2013 EICS 27.160English versionPhotovoltaic (PV) modules -Ammonia corrosion testing(IEC 62716:2013)Modules photovoltaques (PV) -Essai de corrosion lammoniac(CEI 62716:2013)Photovoltaische (PV-)Module -Ammoniak-Korrosionsprfung(IEC 62716:2

7、013)This European Standard was approved by CENELEC on 2013-08-01. 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 bibliographic

8、al 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 responsibili

9、ty 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, Form

10、er Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.BS EN 62716:2013EN 62716:2013 - 2 -For

11、ewordThe text of document 82/769/FDIS, future edition 1 of IEC 62716, prepared by IEC/TC 82 “Solar photovoltaic energy systems“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62716:2013.The following dates are fixed: latest date by which the document has to be implement

12、ed at national level by publication of an identical national standard or by endorsement(dop) 2014-05-01 latest date by which the national standards conflicting with the document have to be withdrawn(dow) 2016-08-01Attention is drawn to the possibility that some of the elements of this document may b

13、e the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights.Endorsement noticeThe text of the International Standard IEC 62716:2013 was approved by CENELEC as a European Standard without any modification.BS EN 62716:2013EN 62716:2013

14、 - 2 -ForewordThe text of document 82/769/FDIS, future edition 1 of IEC 62716, prepared by IEC/TC 82 “Solar photovoltaic energy systems“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62716:2013.The following dates are fixed: latest date by which the document has to be

15、implemented at national level by publication of an identical national standard or by endorsement(dop) 2014-05-01 latest date by which the national standards conflicting with the document have to be withdrawn(dow) 2016-08-01Attention is drawn to the possibility that some of the elements of this docum

16、ent 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 noticeThe text of the International Standard IEC 62716:2013 was approved by CENELEC as a European Standard without any modification.BS EN 62716:2013- 3

17、- EN 62716:2013Annex ZA (normative)Normative references to international publicationswith their corresponding European publicationsThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the editi

18、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD YearIEC 61215 200

19、5 Crystalline silicon terrestrial photovoltaic (PV) modules - Design qualification and type approvalEN 61215 2005IEC 61646 2008 Thin-film terrestrial photovoltaic (PV) modules - Design qualification and type approvalEN 61646 2008IEC 61730-2 (mod) 2004 Photovoltaic (PV) module safety qualification -P

20、art 2: Requirements for constructionEN 61730-2 2007ISO/IEC 17025 - General requirements for the competence of testing and calibration laboratoriesEN ISO/IEC 17025 -ISO 6988 1985 Metallic and other non-organic coatings -Sulfur dioxide test with general condensation of moistureEN ISO 6988 1994BS EN 62

21、716:2013 2 62716 IEC:2013 CONTENTS 1 Scope and object 5 2 Normative references . 5 3 Samples . 5 4 Test procedures . 9 General . 9 4.1Bypass diode functionality test 9 4.2Purpose . 9 4.2.1Apparatus 9 4.2.2Procedure 9 4.2.3Requirements 9 4.2.45 Preconditioning 10 6 Initial measurements 10 General . 1

22、0 6.1Crystalline silicon 10 6.2Thin-film technologies . 10 6.37 Ammonia resistance test procedure 10 Testing facility and material . 10 7.1Test conditions and execution . 10 7.28 Cleaning and recovery 11 9 Final measurements . 11 General . 11 9.1Crystalline silicon 11 9.2Thin-film technologies . 12

23、9.310 Requirements . 12 General . 12 10.1Crystalline silicon 12 10.2Thin-film technologies . 12 10.311 Test report 13 Figure 1 Ammonia resistance test sequence for crystalline PV modules . 7 Figure 2 Ammonia resistance test sequence for thin-film PV modules 8 Table 1 Test conditions 11 BS EN 62716:2

24、013 2 62716 IEC:2013 CONTENTS 1 Scope and object 5 2 Normative references . 5 3 Samples . 5 4 Test procedures . 9 General . 9 4.1Bypass diode functionality test 9 4.2Purpose . 9 4.2.1Apparatus 9 4.2.2Procedure 9 4.2.3Requirements 9 4.2.45 Preconditioning 10 6 Initial measurements 10 General . 10 6.1

25、Crystalline silicon 10 6.2Thin-film technologies . 10 6.37 Ammonia resistance test procedure 10 Testing facility and material . 10 7.1Test conditions and execution . 10 7.28 Cleaning and recovery 11 9 Final measurements . 11 General . 11 9.1Crystalline silicon 11 9.2Thin-film technologies . 12 9.310

26、 Requirements . 12 General . 12 10.1Crystalline silicon 12 10.2Thin-film technologies . 12 10.311 Test report 13 Figure 1 Ammonia resistance test sequence for crystalline PV modules . 7 Figure 2 Ammonia resistance test sequence for thin-film PV modules 8 Table 1 Test conditions 11 BS EN 62716:201362

27、716 IEC:2013 5 PHOTOVOLTAIC (PV) MODULES AMMONIA CORROSION TESTING 1 Scope and object Photovoltaic (PV) modules are electrical devices intended for continuous outdoor exposure during their lifetime. Highly corrosive wet atmospheres, such as in the environment of stables of agricultural companies, co

28、uld eventually degrade some of the PV module components (corrosion of metallic parts, deterioration of the properties of some non-metallic materials such as protective coatings and plastics by assimilation of ammonia) causing permanent damages that could impair their functioning and safe operation.

29、This standard describes test sequences useful to determine the resistance of PV modules to ammonia (NH3). All tests included in the sequences, except the bypass diode functionality test, are fully described in IEC 61215, IEC 61646 and IEC 61730-2. They are combined in this standard to provide means

30、to evaluate possible faults caused in PV modules when operating under wet atmospheres having high concentration of dissolved ammonia (NH3). This standard applies to flat plate PV modules. The structure of this standard follows closely IEC 61701. 2 Normative references The following documents, in who

31、le 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 referenced document (including any amendments) applies. IEC 61215:2005, Crystalline silicon te

32、rrestrial photovoltaic (PV) modules Design qualification and type approval IEC 61646:2008, Thin-film terrestrial photovoltaic (PV) modules Design qualification and type approval IEC 61730-2:2004, Photovoltaic (PV) module safety qualification Part 2: Requirements for testing ISO/IEC 17025, General re

33、quirements for the competence of testing and calibration laboratories ISO 6988:1985, Metallic and other non organic coatings Sulfur dioxide test with general condensation of moisture 3 Samples Three identical samples of the model of PV module or assembly of interest shall be subjected to any of the

34、testing sequences included in Figures 1 or 2, depending on the PV technology considered, namely crystalline silicon or thin-film respectively. As the figures indicate one of these samples should be used as a control. The control sample should be used as a check every time the test samples are measur

35、ed to evaluate the effect of the ammonia exposure test. BS EN 62716:2013 6 62716 IEC:2013 If a full-size sample is too large to fit into the environmental chambers required for the ammonia exposure test then a smaller representative sample may be specially designed and manufactured for this test. Th

36、e representative sample should be carefully designed so that it can reveal similar failure mechanisms as the full-size one, and the fabrication process of the representative sample should be as identical as possible to the process of the full-size ones. The fact that the test has been made on repres

37、entative samples and not on the full-size samples has to be indicated and reported in the test report item g), see Clause 11. If the PV module is provided with means for grounding then they constitute a part of the test sample. The test results relate only to the sample structure as tested. If a mod

38、ule manufacturer uses several sources for PV module components, additional test samples are required. Samples shall be chosen in such way, that each encapsulation material used and any component forming an outer surface of the module used in the product range is represented. BS EN 62716:2013 6 62716

39、 IEC:2013 If a full-size sample is too large to fit into the environmental chambers required for the ammonia exposure test then a smaller representative sample may be specially designed and manufactured for this test. The representative sample should be carefully designed so that it can reveal simil

40、ar failure mechanisms as the full-size one, and the fabrication process of the representative sample should be as identical as possible to the process of the full-size ones. The fact that the test has been made on representative samples and not on the full-size samples has to be indicated and report

41、ed in the test report item g), see Clause 11. If the PV module is provided with means for grounding then they constitute a part of the test sample. The test results relate only to the sample structure as tested. If a module manufacturer uses several sources for PV module components, additional test

42、samples are required. Samples shall be chosen in such way, that each encapsulation material used and any component forming an outer surface of the module used in the product range is represented. BS EN 62716:201362716 IEC:2013 7 Preconditioning 3 modules Ammonia resistance test following ISO 6988 wi

43、th ammonia instead of sulphur dioxide 10.2 Maximum power determination MST 16 Dielectric withstand test MST 01 Visual inspection 10.15 Wet leakage current test MST 13 Ground continuity test MST 01 Visual inspection Bypass diode functionality test C o n t r o l 10.2 Maximum power determination 2 modu

44、les MST 16 Dielectric withstand test 10.15 Wet leakage current test MST 13 Ground continuity test Cleaning and recovery 1 module IEC 1507/13 NOTE 1 Preconditioning and tests 10.2 and 10.15 are taken from IEC 61215:2005. Tests MST 01, MST 13 and MST 16 are taken from IEC 61730-2:2004. NOTE 2 The cont

45、rol module should be used as a check every time the test modules are measured to evaluate the effect of the salt mist test. Figure 1 Ammonia resistance test sequence for crystalline PV modules BS EN 62716:2013fect of the ammonia resistance test 8 62716 IEC:2013 3 modules Ammonia resistance test foll

46、owing ISO 6988 with ammonia instead of sulphur dioxide MST 16 MST 01 10.15 MST 13 MST 01 Visual inspection Bypass diode functionality test 1 module C o n t r o l 10.2 Maximum power determination 2 modules MST 16 Dielectric withstand test 10.15 Wet leakage current test MST 13 Ground continuity test 1

47、0.19 Light soaking 10.6 Performance at STC (not NOCT) Cleaning and recovery Visual inspection Dielectric withstand test Wet leakage current test Ground continuity test IEC 1508/13 NOTE 1 Tests 10.2, 10.6, 10.15 and 10.19 are taken from IEC 61646:2008. Tests MST 01, MST 13 and MST 16 are taken from I

48、EC 61730-2:2004. NOTE 2 The control module should be used as a check every time the test modules are measured to evaluate the effect of the ammonia resistance test. NOTE 3 A maximum power determination can be added after ammonia resistance testing according to test 10.2 of IEC 61646:2008 for diagnos

49、tic purposes. Whether light soaking is required is dependend on the kind of thin-film technology tested. NOTE 4 Test 10.6 is performed as a part of the requirements cooresponding to test 10.19 as described in IEC 61646:2008. For the remaining requirements use test MST 01 instead of 10.1 and MST 16 instead of 10.13. Figure 2 Ammonia resistance test sequence for thin-film PV modules BS EN 62716:2013 8 62716 IEC:2013 3 modules Ammonia resistance test following ISO 6988 with ammonia instead of sulphur