EN 60904-9:2007

SLOVENSKI STANDARD
01-marec-2008
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Photovoltaic devices - Part 9: Solar simulator performance requirements
Photovoltaische Einrichtungen - Teil 9: Leistungsanforderungen an Sonnensimulatoren
Dispositifs photovoltaïques - Partie 9: Exigences pour le fonctionnement des simulateurs
solaires
Ta slovenski standard je istoveten z: EN 60904-9:2007
ICS:
27.160
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60904-9
NORME EUROPÉENNE
November 2007
EUROPÄISCHE NORM
ICS 27.160
English version
Photovoltaic devices -
Part 9: Solar simulator performance requirements
(IEC 60904-9:2007)
Dispositifs photovoltaïques -  Photovoltaische Einrichtungen -
Partie 9: Exigences pour le Teil 9: Leistungsanforderungen
fonctionnement des simulateurs solaires an Sonnensimulatoren
(CEI 60904-9:2007) (IEC 60904-9:2007)

This European Standard was approved by CENELEC on 2007-11-01. 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 bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60904-9:2007 E
Foreword
The text of document 82/488/FDIS, future edition 2 of IEC 60904-9, prepared by IEC TC 82, Solar
photovoltaic energy systems, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60904-9 on 2007-11-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-11-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60904-9:2007 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60904-1 NOTE  Harmonized as EN 60904-1:2006 (not modified).
IEC 60904-2 NOTE  Harmonized as EN 60904-2:2007 (not modified).
IEC 60904-7 NOTE  Harmonized as EN 60904-7:1998 (not modified).
IEC 60904-8 NOTE  Harmonized as EN 60904-8:1998 (not modified).
IEC 60904-10 NOTE  Harmonized as EN 60904-10:1998 (not modified).
IEC 61215 NOTE  Harmonized as EN 61215:2005 (not modified).
IEC 61646 NOTE  Harmonized as EN 61646:1997 (not modified).
__________
- 3 - EN 60904-9:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition 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 Year

1) 2)
IEC 60904-3 - Photovoltaic devices - EN 60904-3 1993
Part 3: Measurement principles for terrestrial
photovoltaic (PV) solar devices with reference
spectral irradiance data
1)
Undated reference.
2)
Valid edition at date of issue.

IEC 60904-9
Edition 2.0 2007-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Photovoltaic devices –
Part 9: Solar simulator performance requirements

Dispositifs photovoltaïques –
Partie 9: Exigences pour le fonctionnement des simulateurs solaires

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 27.160 ISBN 2-8318-9347-X
– 2 – 60904-9 © IEC:2007
CONTENTS
FOREWORD.3

1 Scope and object.5
2 Normative references .5
3 Terms and definitions .5
3.1 solar simulator.5
3.2 test plane .6
3.3 designated test area.6
3.4 data sampling time .6
3.5 data acquisition time .6
3.6 time for acquiring the I-V characteristic .6
3.7 effective irradiance.6
3.8 spectral range .7
3.9 spectral match.7
3.10 non-uniformity of irradiance in the test plane .7
3.11 temporal instability of irradiance.7
3.12 solar simulator classification.8
4 Simulator requirements .8
5 Measurement procedures .9
5.1 Introductory remarks .9
5.2 Spectral match .9
5.3 Non-uniformity of irradiance on the test plane .10
5.4 Temporal instability of irradiance.11
5.4.1 Solar simulators for I-V measurement.11
5.4.2 Solar simulators for irradiance exposure.13
6 Name plate and data sheet.13

Bibliography.15

Figure 1 – Evaluation of STI for a long pulse solar simulator.12
Figure 2 – Evaluation of STI for a short pulse solar simulator .12

Table 1 – Global reference solar spectral irradiance distribution given in IEC 60904-3.7
Table 2 – Definition of solar simulator classifications .8
Table 3 – Example of solar simulator rating measurements.9

60904-9 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC DEVICES –
Part 9: Solar simulator performance requirements

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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 60904-9 has been prepared by IEC technical committee 82: Solar
photovoltaic energy systems.
This second edition cancels and replaces the first edition issued in 1995. It constitutes a
technical revision.
The main technical changes with respect to the previous edition are as follows:
• Added “Terms and definitions” clause
• Redefinition of solar simulator classification
• Added procedures for the measurement of classification parameters: Spectral match,
temporal instability, non-uniformity of irradiance
• Provided details and guidance to address technology specific measurement effects
The text of this standard is based on the following documents:

– 4 – 60904-9 © IEC:2007
FDIS Report on voting
82/488/FDIS 82/498/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 of the IEC 60904 series, under the general title Photovoltaic devices, can be
found on the IEC web site.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site 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.
60904-9 © IEC:2007 – 5 –
PHOTOVOLTAIC DEVICES –
Part 9: Solar simulator performance requirements

1 Scope and object
IEC standards for photovoltaic devices require the use of specific classes of solar simulators
deemed appropriate for specific tests. Solar simulators can be either used for performance
measurements of PV devices or endurance irradiation tests. This part of IEC 60904 provides
the definitions of and means for determining simulator classifications. In the case of PV
performance measurements, using a solar simulator of high class does not eliminate the need
to quantify the influence of the simulator on the measurement by making spectral mismatch
corrections and analyzing the influences of uniformity of irradiance of the test plane and
temporal stability on th
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