1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 4730 Nameplate, Datasheet, and Sampling Requirements of Photovoltaic Modules STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMIS
2、SION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Nameplate, Datasheet, and Sampling Requirements of Photovoltaic Modules, UL 4730 First Edition, Dated July 14, 2017 SUMMARY OF TOPICS This is the First Ed
3、ition of the Standard for Nameplate, Datasheet, and Sampling Requirements of Photovoltaic Modules, UL 4730, which covers the required information on the production and measurement tolerances of nameplate rating of at plate photovoltaic (PV) modules, and does not apply to concentrator PV modules. Thi
4、s standard identies ve rating conditions under which the performance parameters of PV modules shall be reported and a statistical method to determine the number of samples required for the power rating measurements. The new requirements are substantially in accordance with Proposal(s) on this subjec
5、t dated December 5, 2014 and January 20, 2017. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Stan
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10、AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 14, 2017 1 UL 4730 Standard for Nameplate, Datasheet, and Sampling Requirements of Photovoltaic Modules First Edition July 14, 2017 This ANSI/UL Standard for Safety consists of the First Edition. The most recent desi
11、gnation of ANSI/UL 4730 as an American National Standard (ANSI) occurred on July 14, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals sh
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13、 and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 4730-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 14, 2017 UL 4730 2 No Text on This
14、PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS 1 Scope .4 2 Normative References .4 3 General 5 4 Nameplate .7 5 Datasheet 8 6 Sampling.9 7 Manufacturers Quality Management System (QMS).9 APPENDIX ASample Size (n) Determination
15、(informative) A.1 General.A1 A.2 Estimating Standard Deviation “” .A1 A.3 Estimating Sample Size “n” .A2 JULY 14, 2017 UL 4730 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1 Scope 1.1 This standard identies the required information on th
16、e production and measurement tolerances of nameplate rating of at plate photovoltaic (PV) modules. 1.2 This standard identies ve rating conditions under which the performance parameters of PV modules shall be reported. 1.3 This standard identies a statistical method to determine the number of sample
17、s required for the power rating measurements. 1.4 The samples shall be drawn at random without regard to their quality as dened in the Standard for sampling procedures and tables for inspection by attributes, ANSI/ASQ Z1.4. 1.5 The power rating measurements shall be performed. 1.6 This standard requ
18、ires that the nameplate on the PV module carry the minimum required information identied in this standard. 1.7 This standard requires that the datasheet supplied by PV module manufacturers carry the minimum required information identied in this standard. 1.8 Every model/type nameplate rating shall b
19、e tested to this standard. If any single model has multiple power bins, then the lowest and highest power bins of the model shall be tested as a minimum. 1.9 This standard does not specify annual sampling frequency. 1.10 This standard does not apply to concentrator PV modules. 2 Normative References
20、 2.1 The following documents, in whole or in part, are normatively referenced in this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61215-1:2016, Terrestrial photovoltaic (
21、PV) modules - Design qualication and type approval - Part 1: Test requirements IEC 61215-2:2016, Terrestrial photovoltaic (PV) modules - Design qualication and type approval - Part 2: Test procedures IEC 61853-1:2011, Photovoltaic (PV) module performance testing and energy rating - Part 1: Irradianc
22、e and temperature performance measurements and power rating IEC TS 62941:2016, Terrestrial photovoltaic (PV) modules - Guideline for increased condence in PV module design qualication and type approval ANSI/ASQ Z1.4:2008, Sampling Procedures and Tables for Inspection by Attributes JULY 14, 2017 UL 4
23、730 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 General 3.1 All modules shall be stabilized following method MQT 19.1 from IEC 61215-2:2016 (for technology specic requirements see sub-parts of IEC 61215-1:2016). After stabilization th
24、e modules shall be measured in accordance with MQT 6.1 (P max (Lab). After the stabilization procedure all modules must be within the power rating of the name plate (P max (NP) including stated measurement uncertainty m1. Therefore, the following criteria shall be met: P max Verication: Each individ
25、ual module shall meet the following criterion: where P max (Lab) is the measured maximum STC power of each module in the stabilized state; P max (NP) is the maximum rated nameplate power of each module without tolerances; m 1 is the measurement uncertainty in % of laboratory for P max (expanded comb
26、ined uncertainty (k=2), ISO/IEC Guide 98-3); t 1 is the manufacturers rated lower production tolerance in % for P max . For P max (Lab), the following criterion shall apply: where P max (Lab) is the arithmetic average of the measured maximum STC power of the modules in stabilized condition. For mult
27、iple bins of power classes this formula has to be applied to each power class under investigation. V oc Verication: Each individual module shall meet the following criterion: JULY 14, 2017 UL 4730 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FRO
28、M UL where V oc (Lab) is the measured maximum V oc of each module in the stabilized state; V oc (NP) is the maximum rated nameplate V oc of each module without tolerances; m 2 is the measurement uncertainty in % of laboratory for V oc ; t 2 is the manufacturers rated upper production tolerance in %
29、for V oc . I sc Verication: Each individual module shall meet the following criterion: where I sc (Lab) is the measured maximum I sc of each module in the stabilized state; I sc (NP) is the maximum rated nameplate I sc of each module without tolerances; m 3 is the measurement uncertainty in % of lab
30、oratory for I sc ; t 3 is the manufacturers rated upper production tolerance in % for I sc . A systematic variation to either higher or lower output power will be stated in the nal report. 3.2 In addition, a minimum of one module (more modules may be required as dictated by the purchaser or user) cl
31、osest to the nominal rated power shall be measured at the other four rating conditions given in the Standard for Photovoltaic module performance testing and energy rating, IEC 61853-1, (NOCT, LIC, HTC, and LTC). All ve rating conditions are presented in Table 3.1. The nameplate on the individual PV
32、modules shall carry the minimum information identied in Nameplate, Section 4. Similarly, the datasheet and installation manual supplied by the PV module manufacturer shall carry the minimum information identied in Datasheet, Section 5. The number of samples used to calculate the measured average pow
33、er shall be determined using the method identied in Sampling, Section 6. JULY 14, 2017 UL 4730 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 3.1 Five Rating Conditions as Required by IEC 61853-1 Abbreviation Description Irradiance (
34、W/m 2 ) Module Temperature (C) Spectrum HTC High temperature conditions 1000 75 AM 1.5 STC Standard test conditions 1000 25 AM 1.5 NMOT Nominal module operating temperature conditions 800 NMOT (data from a certication body supplied by manufacturer) AM 1.5 LTC Low temperature conditions 500 15 AM 1.5
35、 LIC Low irradiance conditions 200 25 AM 1.5 Note: The measurements at non-STC conditions may be done according to manufacturer procedure as long as it is consistent with the intent, test procedure and requirements of IEC 61853-1 standard. 4 Nameplate 4.1 The nameplate on the individual PV modules s
36、hall carry the following minimum information: a) Name and logo of original manufacturer or supplier, b) Type designation and serial number, c) Maximum system voltage, d) Rated nominal power (P max ) at STC (1000 W/m 2 , 25C cell temperature, and air mass AM 1.5 global spectrum), e) Maximum negative
37、production tolerance (- % or %) of P max at STC, and f) Rated nominal short circuit current (I sc ), open circuit voltage (V oc ), voltage at maximum power point (V max ), and current at maximum power point (I max ) at STC. JULY 14, 2017 UL 4730 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER RE
38、PRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5 Datasheet 5.1 The datasheet and installation manual supplied by the PV module manufacturer shall carry the following minimum information: a) All the nameplate information identied in Nameplate, Section 4, b) Temperature coefficients (%/C) of V
39、oc ,I sc , and P max at STC, c) Performance data for at least one module closest to the nominal rated power measured at the ve rating conditions given in the Standard for Photovoltaic module performance testing and energy rating, IEC 61853-1, and shown in Table 3.1. In addition, the uncertainty of m
40、easured value at each test condition shown in Table 3.1, and the uncertainty value of the measured STC data shall appear on the datasheet. d) The independently measured average power, P max (Lab), from the measured power of all the individual modules, P max (Lab), shall be included in the datasheet.
41、 Note: The number of modules (n in Table 6.1) included in the calculation should be continually updated as more batches (or production lines) are manufactured and shipped by the manufacturer. e) The methodology about how the manufacturer established the nominal rating shall be included - starting wi
42、th the initial number of modules tested and then how the manufacturer continues to increase the number of modules as more batches are tested and shipped. Suppose the initial number of modules (n1) tested from the rst batch (or production line) yields a nominal rating of P1. As more batches (or produ
43、ction lines) are tested and shipped, different pair (Pi, ni) should be obtained for each batch i. The best estimator of the mean rated nominal power for m batches is the grand average of (P1+P2+P3+.+Pm)/m. The standard deviation obtained from all the modules from the m batches shall be used to deter
44、mine the standard deviation shown in Table 6.1. f) The measurement uncertainty at STC along with calibration traceability chain for the measuring equipment and calibrated modules used in the production line by the manufacturer, and g) A statement declaring that the overall performance requirements o
45、f the standard including PV-specic QMS per IEC TS 62941:2016 are met and that the test modules were stabilized before the lab measurements by preconditioning the test samples according to IEC 61215 standard series. JULY 14, 2017 UL 4730 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
46、N OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6 Sampling 6.1 The samples shall be drawn at random without regard to their quality as dened in the Standard for sampling procedures and tables for inspection by attributes, ANSI/ASQ Z1.4. P max (Lab) is the independently measured average power of “1-to-1
47、00” samples (n). The exact number of samples “n” to be used is to be determined based on the ratio between the percent production tolerance “t%” and the percent standard deviation “%” of 30 (thirty) samples provided by the manufacturer from a production batch/lot or batches/lots based on the accepte
48、d inspection level and sampling procedure per ANSI/ASQ Z1.4. Table 6.1 identies the required number of samples (n) depending on the production tolerance and standard deviation of 30 samples. A detailed explanation of the statistical approach for the sample size determination is provided in Appendix
49、A. Table 6.1 Sample size determination based on the tolerance and standard deviation of minimum 30 samples t% 1 0.2 0.2 0.3 0.3 0.4 0.4 0.5 0.4 0.5 0.5 0.6 0.5 0.6 0.6 0.7 0.7 0.8 0.8 1.0 1.0 1.3 1.3 1.4 1.4 1.7 1.7 2.0 2.0 t%=2 0.5 0.5 0.7 0.7 0.8 0.8 0.9 0.9 1.0 1.0 1.1 1.1 1.2 1.2 1.4 1.4 1.7 1.7 2.0 2.0 2.5 2.5 2.9 2.9 3.3 3.3 4.0 4.0 t%=3 0.7 0.7 1.0 1.0 1.2 1.2 1.4 1.
