1、 IEC 62446-1 Edition 1.0 2016-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Photovoltaic (PV) systems Requirements for testing, documentation and maintenance Part 1: Grid connected systems Documentation, commissioning tests and inspection Systmes photovoltaques (PV) Exigences pour les essais, la do
2、cumentation et la maintenance Partie 1: Systmes connects au rseau lectrique Documentation, essais de mise en service et examen IEC 62446-1:2016-01(en-fr) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no
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20、STANDARD NORME INTERNATIONALE Photovoltaic (PV) systems Requirements for testing, documentation and maintenance Part 1: Grid connected systems Documentation, commissioning tests and inspection Systmes photovoltaques (PV) Exigences pour les essais, la documentation et la maintenance Partie 1: Systmes
21、 connects au rseau lectrique Documentation, essais de mise en service et examen INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 27.160 ISBN 978-2-8322-3100-5 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission E
22、lectrotechnique Internationale 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 agr. colour inside 2 IEC 62446-1:2016 IEC 2016 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Sco
23、pe 8 2 Normative references 8 3 Terms and definitions 8 4 System documentation requirements . 10 4.1 General . 10 4.2 System data 10 4.2.1 Basic system information . 10 4.2.2 System designer information 11 4.2.3 System installer information . 11 4.3 Wiring diagram 11 4.3.1 General . 11 4.3.2 Array G
24、eneral specifications . 11 4.3.3 PV string information . 11 4.3.4 Array electrical details . 12 4.3.5 AC system . 12 4.3.6 Earthing and overvoltage protection. 12 4.4 String layout . 12 4.5 Datasheets . 12 4.6 Mechanical design information 12 4.7 Emergency systems 12 4.8 Operation and maintenance in
25、formation 13 4.9 Test results and commissioning data 13 5 Verification 13 5.1 General . 13 5.2 Inspection . 14 5.2.1 General . 14 5.2.2 DC system General . 14 5.2.3 DC system Protection against electric shock . 14 5.2.4 DC system Protection against the effects of insulation faults 14 5.2.5 DC system
26、 Protection against overcurrent 15 5.2.6 DC system Earthing and bonding arrangements . 15 5.2.7 DC system Protection against the effects of lightning and overvoltage 15 5.2.8 DC system Selection and erection of electrical equipment 15 5.2.9 AC system . 16 5.2.10 Labelling and identification 16 5.3 T
27、esting . 16 5.3.1 General . 16 5.3.2 Test regimes and additional tests 17 5.3.3 Test regimes for systems with module level electronics . 17 5.3.4 Category 1 test regime All systems . 18 5.3.5 Category 2 test regime 18 5.3.6 Additional tests 19 6 Test procedures Category 1 19 6.1 Continuity of protec
28、tive earthing and equipotential bonding conductors . 19 IEC 62446-1:2016 IEC 2016 3 6.2 Polarity test 19 6.3 PV string combiner box test 20 6.4 PV string Open circuit voltage measurement 20 6.5 PV string Current measurement . 21 6.5.1 General . 21 6.5.2 PV string Short circuit test 21 6.5.3 PV strin
29、g Operational test . 22 6.6 Functional tests 22 6.7 PV array insulation resistance test 22 6.7.1 General . 22 6.7.2 PV array insulation resistance test Test method 23 6.7.3 PV array insulation resistance Test procedure 23 7 Test procedures Category 2 25 7.1 General . 25 7.2 String I-V curve measurem
30、ent . 25 7.2.1 General . 25 7.2.2 I-V curve measurement of V ocand I sc . 25 7.2.3 I-V curve measurement Array performance . 25 7.2.4 I-V curve measurement Identification of module / array defects or shading issues . 26 7.3 PV array infrared camera inspection procedure . 27 7.3.1 General . 27 7.3.2
31、IR test procedure . 27 7.3.3 Interpreting IR test results . 27 8 Test procedures Additional tests . 28 8.1 Voltage to ground Resistive ground systems 28 8.2 Blocking diode test 28 8.3 PV array Wet insulation resistance test 29 8.3.1 General . 29 8.3.2 Wet insulation test procedure 29 8.4 Shade evalu
32、ation 29 9 Verification reports 30 9.1 General . 30 9.2 Initial verification . 31 9.3 Periodic verification 31 Annex A (informative) Model verification certificate 32 Annex B (informative) Model inspection report . 33 Annex C (informative) Model PV array test report 36 Annex D (informative) Interpre
33、ting I-V curve shapes 37 D.1 General . 37 D.2 Variation 1 Steps or notches in curve . 38 D.3 Variation 2 Low current 38 D.4 Variation 3 Low voltage 38 D.5 Variation 4 Rounder knee . 39 D.6 Variation 5 Shallower slope in vertical leg 39 D.7 Variation 6 Steeper slope in horizontal leg . 40 Figure 1 Ex
34、ample sun-path diagram . 30 4 IEC 62446-1:2016 IEC 2016 Figure D.1 I-V curve shapes. 37 Table 1 Modifications to the test regime for systems with module level electronics . 17 Table 2 Minimum values of insulation resistance PV arrays up to 10 kWp . 24 IEC 62446-1:2016 IEC 2016 5 INTERNATIONAL ELECTR
35、OTECHNICAL COMMISSION _ PHOTOVOLTAIC (PV) SYSTEMS REQUIREMENTS FOR TESTING, DOCUMENTATION AND MAINTENANCE Part 1: Grid connected systems Documentation, commissioning tests and inspection FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization c
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45、e Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention 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
46、 responsible for identifying any or all such patent rights. International Standard IEC 62446-1 has been prepared by IEC technical committee 82: Solar photovoltaic energy systems. This first edition cancels and replaces IEC 62446 published in 2009. This edition constitutes a technical revision. This
47、edition includes the following significant technical change with respect to IEC 62446:2009: the scope has been expanded to include a wider range of system test and inspection regimes to encompass larger and more complex PV systems. 6 IEC 62446-1:2016 IEC 2016 The text of this standard is based on th
48、e following documents: FDIS Report on voting 82/1036/FDIS 82/1056A/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 accordance with the ISO/IEC Directives, Part 2. A list of al
49、l parts in the IEC 62446 series, published under the general title Photovoltaic (PV) systems Requirements for testing, documentation and maintenance, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in
