IEC 60904-2:2015
(Main)Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices
Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices
IEC 60904-2:2015 gives requirements for the classification, selection, packaging, marking, calibration and care of photovoltaic reference devices. This standard covers photovoltaic reference devices used to determine the electrical performance of photovoltaic cells, modules and arrays under natural and simulated sunlight. The main technical changes with regard to the previous edition are as follows:
- addition of a test procedure in simulated sunlight of subsequent measurement of primary and secondary reference device;
- definition of standard test conditions;
- reduction of allowed diffuse component for secondary reference cell calibration.
Dispositifs photovoltaïques - Partie 2: Exigences applicables aux dispositifs photovoltaïques de référence
IEC 60904-2:2015 donne les exigences relatives à la classification, à la sélection, au conditionnement, au marquage, à l'étalonnage et aux précautions d'utilisation des dispositifs photovoltaïques de référence. La présente norme couvre les dispositifs photovoltaïques de référence utilisés pour déterminer les performances électriques des cellules, modules et panneaux photovoltaïques sous rayonnement lumineux solaire naturel et simulé. Par rapport à l'édition précédente, les modifications techniques majeures sont les suivantes:
- ajout d'une procédure d'essai en rayonnement lumineux solaire simulé d'une mesure suivante de dispositifs primaires et secondaires de référence;
- définition des conditions normalisées d'essai;
- diminution de la composante diffuse autorisée pour l'étalonnage de la cellule secondaire de référence.
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IEC 60904-2 ®
Edition 3.0 2015-01
REDLINE VERSION
INTERNATIONAL
STANDARD
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inside
Photovoltaic devices –
Part 2: Requirements for photovoltaic reference devices
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
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The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
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77, 86 and CISPR.
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IEC 60904-2 ®
Edition 3.0 2015-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Photovoltaic devices –
Part 2: Requirements for photovoltaic reference devices
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-2231-7
– 2 – IEC 60904-2:2015 RLV IEC 2015
CONTENTS
FOREWORD . 3
1 Scope and object . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Selection of reference device . 8
4.1 General requirements . 8
4.2 Additional requirements for single reference cell in a multi-cell package . 9
4.3 Additional requirements for reference modules . 9
4.4 Requirements for built-in shunt resistors . 9
5 Temperature measurement . 10
6 Electrical connections . 10
7 Calibration . 10
8 Data sheet Report . 11
9 Marking . 12
10 Packaging . 12
10.1 Recommended packaging for use in natural sunlight . 12
10.2 Recommended packaging for use under solar simulators . 12
10.3 Single cell package . 12
11 Care of reference devices . 12
12 Calibration of secondary reference devices against a primary reference cell . 13
12.1 General . 13
12.2 Natural sunlight . 13
12.3 Simulated sunlight . 14
12.4 Test procedure . 14
13 Calibration of working solar reference device against a secondary reference solar
device. 15
Bibliography . 16
Figure 1 – Single-cell package . 7
Figure 2 – Single Reference cell in a multi-cell package . 9
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC DEVICES –
Part 2: Requirements for photovoltaic reference devices
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 concerning 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)”). Their 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 closely
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 relevant 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 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 maximum 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 provide 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 or 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
expenses 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) 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 responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC 60904-2:2015 RLV IEC 2015
International Standard IEC 60904-2 has been prepared by IEC Technical Committee 82: Solar
photovoltaic energy systems.
This third edition cancels and replaces the second edition, published in 2007. It constitutes a
technical revision.
The main technical changes with regard to the previous edition are as follows:
– addition of a test procedure in simulated sunlight of subsequent measurement of primary
and secondary reference device;
– definition of standard test conditions;
– reduction of allowed diffuse component for secondary reference cell calibration to 20 %.
The text of this standard is based on the following documents:
FDIS Report on voting
82/893/FDIS 82/918/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 all parts in the IEC 60904 series, published under the general title Photovoltaic
devices, 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 the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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 publication using a colour printer.
PHOTOVOLTAIC DEVICES –
Part 2: Requirements for photovoltaic reference solar devices
1 Scope and object
This part of IEC 60904 gives requirements for the classification, selection, packaging, marking,
calibration and care of photovoltaic reference solar devices.
This standard covers solar photovoltaic reference devices used to determine the electrical
performance of solar photovoltaic cells, modules and arrays under natural and simulated
sunlight. It does not cover solar photovoltaic reference devices for use under concentrated
sunlight.
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 referenced document (including any
amendments) applies.
IEC 60891, Photovoltaic devices – Procedures for temperature and irradiance corrections to
measured I-V characteristics
IEC 60904-1, Photovoltaic devices – Part 1: Measurements of photovoltaic current-voltage
characteristics
IEC 60904-3, Photovoltaic devices – Part 3: Measurement principles for terrestrial
photovoltaic (PV) solar devices with reference spectral irradiance data
IEC 60904-4, Photovoltaic devices – Part 4: Reference solar devices – Procedures for
establishing calibration traceability
IEC 60904-5, Photovoltaic devices – Part 5: Determination of the equivalent cell temperature
(ECT) of photovoltaic (PV) devices by the open-circuit voltage method
IEC 60904-7, Photovoltaic devices – Part 7: Computation of the spectral mismatch correction
for measurements of photovoltaic devices
IEC 60904-8, Photovoltaic devices – Part 8: Measurement of spectral responsivity of a
photovoltaic (PV) device
IEC 60904-9, Photovoltaic devices – Part 9: Solar simulator performance requirements
IEC 60904-10, Photovoltaic devices – Part 1
...
IEC 60904-2 ®
Edition 3.0 2015-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Photovoltaic devices –
Part 2: Requirements for photovoltaic reference devices
Dispositifs photovoltaïques –
Partie 2: Exigences applicables aux dispositifs photovoltaïques de référence
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,
77, 86 and CISPR.
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IEC 60904-2 ®
Edition 3.0 2015-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Photovoltaic devices –
Part 2: Requirements for photovoltaic reference devices
Dispositifs photovoltaïques –
Partie 2: Exigences applicables aux dispositifs photovoltaïques de référence
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-2184-6
– 2 – IEC 60904-2:2015 IEC 2015
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 5
4 Selection of reference device . 7
4.1 General requirements . 7
4.2 Additional requirements for single reference cell in a multi-cell package . 8
4.3 Additional requirements for reference modules . 8
4.4 Requirements for built-in shunt resistors . 8
5 Temperature measurement . 9
6 Electrical connections . 9
7 Calibration . 9
8 Report . 10
9 Marking . 11
10 Packaging . 11
10.1 Recommended packaging for use in natural sunlight . 11
10.2 Recommended packaging for use under solar simulators . 11
10.3 Single cell package . 11
11 Care of reference devices . 12
12 Calibration of secondary reference devices against a primary reference cell . 12
12.1 General . 12
12.2 Natural sunlight . 12
12.3 Simulated sunlight . 13
12.4 Test procedure . 13
13 Calibration of working reference device against a secondary reference device . 14
Bibliography . 15
Figure 1 – Single-cell package . 6
Figure 2 – Single reference cell in a multi-cell package . 8
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC DEVICES –
Part 2: Requirements for photovoltaic reference devices
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 concerning 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)”). Their 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 closely
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 relevant 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 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 maximum 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 provide 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 or 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
expenses 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) 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 responsible for identifying any or all such patent rights.
International Standard IEC 60904-2 has been prepared by IEC Technical Committee 82: Solar
photovoltaic energy systems.
This third edition cancels and replaces the second edition, published in 2007. It constitutes a
technical revision.
The main technical changes with regard to the previous edition are as follows:
– addition of a test procedure in simulated sunlight of subsequent measurement of primary
and secondary reference device;
– definition of standard test conditions;
– reduction of allowed diffuse component for secondary reference cell calibration to 20 %.
– 4 – IEC 60904-2:2015 IEC 2015
The text of this standard is based on the following documents:
FDIS Report on voting
82/893/FDIS 82/918/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 all parts in the IEC 60904 series, published under the general title Photovoltaic
devices, 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
...
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