EN 60904-10:2010

SLOVENSKI STANDARD
01-marec-2011
1DGRPHãþD
SIST EN 60904-10:2001
Fotonapetostne naprave - 10. del: Metode merjenja linearnosti
Photovoltaic devices -- Part 10: Methods of linearity measurement
Photovoltaische Einrichtungen -- Teil 10: Meßverfahren für die Linearität
Dispositifs photovoltaïques -- Partie 10: Méthodes de mesure de la linéarité
Ta slovenski standard je istoveten z: EN 60904-10:2010
ICS:
27.160 6RQþQDHQHUJLMD Solar energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60904-10
NORME EUROPÉENNE
March 2010
EUROPÄISCHE NORM
ICS 27.160 Supersedes EN 60904-10:1998

English version
Photovoltaic devices -
Part 10: Methods of linearity measurement
(IEC 60904-10:2009)
Dispositifs photovoltaïques -  Photovoltaische Einrichtungen -
Partie 10: Méthodes de mesure Teil 10: Messverfahren für die Linearität
de la linéarité (IEC 60904-10:2009)
(CEI 60904-10:2009)
This European Standard was approved by CENELEC on 2010-03-01. 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, Croatia, 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: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60904-10:2010 E
Foreword
The text of document 82/582/FDIS, future edition 2 of IEC 60904-10, prepared by IEC TC 82, Solar
photovoltaic energy systems, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60904-10 on 2010-03-01.
This European Standard supersedes EN 60904-10:1998.
The main technical changes with regard to the EN 60904-10:1998 are as follows:
– Added clause for two-lamp method for Isc linearity.
– Changed standard deviation as a metric for linearity to percent deviation from linearity. This was done
because a non-linear device can have a low standard deviation and percent deviation is the
quantitative number that matters for the parameter of interest.
– Removed clause on spectral responsivity nonlinearity because it is not used by any PV
testing / calibration group. For testing real PV devices it is difficult to make this error significant in the
spectral mismatch correction factor while still passing Isc linearity. Measuring the responsivity over the
entire response range means that the device will probably fail the temperature linearity near the band
edge.
– Added a clause to allow short circuit linearity with temperature or total irradiance to be determined
from absolute spectral responsivity measurements. This data is routinely reported in PTB primary
reference cell calibration certificates.
– Added report clause in compliance with ISO/IEC 17025 requirements.
– Often the temperature coefficient of short circuit current is very small so measurement errors can
result in percent deviations outside the accepted range. Therefore, the following text was added to
7.3c): “If the temperature coefficient of short circuit current is less than 0,1 %/K, then the device can
be considered linear with respect to this parameter.”
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
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) 2010-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60904-10:2009 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 60904-7 NOTE  Harmonized as EN 60904-7.
IEC 61829 NOTE  Harmonized as EN 61829.
__________
- 3 - EN 60904-10:2010
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

IEC 60891 - Photovoltaic devices - Procedures for EN 60891 -
temperature and irradiance corrections to
measured I-V characteristics
IEC 60904-1 - Photovoltaic devices - EN 60904-1 -
Part 1: Measurement of photovoltaic current-
voltage characteristics
IEC 60904-3 - Photovoltaic devices - EN 60904-3 -
Part 3: Measurement principles for terrestrial
photovoltaic (PV) solar devices with reference
spectral irradiance data
IEC 60904-8 - Photovoltaic devices - EN 60904-8 -
Part 8: Measurement of spectral response
of a photovoltaic (PV) device
IEC 60904-9 - Photovoltaic devices - EN 60904-9 -
Part 9: Solar simulator performance
requirements
IEC 61215 - Crystalline silicon terrestrial photovoltaic (PV) EN 61215 -
modules - Design qualification and type
approval
IEC 61646 - Thin-film terrestrial photovoltaic (PV) EN 61646 -
modules - Design qualification and type
approval
ISO/IEC 17025 - General requirements for the competence of EN ISO/IEC 17025 -
testing and calibration laboratories

IEC 60904-10 ®
Edition 2.0 2009-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Photovoltaic devices –
Part 10: Methods of linearity measurement

Dispositifs photovoltaïques –
Partie 10: Méthodes de mesure de la linéarité

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 27.160 ISBN 978-2-88910-325-6
– 2 – 60904-10 © IEC:2009
CONTENTS
FOREWORD.3
1 Scope and object .5
2 Normative references.5
3 Apparatus.6
4 Sample selection .6
5 Procedure for current and voltage linearity test.6
5.1 Procedure in natural sunlight .6
5.2 Procedure with a solar simulator .8
5.3 Procedure for short-circuit linearity from absolute spectral responsivity .9
6 Procedure for short-circuit current linearity from two-lamp method.9
6.1 Background .9
6.2 Apparatus - Light sources A and B .9
6.3 General procedure.9
7 Linearity calculation .10
7.1 Slope linearity determination.10
7.2 Determination of the short circuit current linearity using the two lamp method.11
7.3 Linearity requirements .11
8 Report .11
Bibliography .13

60904-10 © IEC:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
PHOTOVOLTAIC DEVICES –
Part 10: Methods of linearity measurement

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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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 60904-10 has been prepared by IEC technical committee 82: Solar
photovoltaic energy systems.
This second edition cancels and replaces the first edition published in 1998 and constitutes a
technical revision.
The main technical changes with regard to the previous edition are as follows:
a) Added clause for two-lamp method for I linearity.
sc
b) Changed standard deviation as a metric for linearity to percent deviation from linearity. This
was done because a non-linear device can have a low standard deviation and percent
deviation is the quantitative number that matters for the parameter of interest.
c) Removed clause on spectral responsivity nonlinearity because it is not used by any PV
testing / calibration group. For testing real PV devices it is difficult to make this error
significant in the spectral mismatch correction factor while still passing I linearity.
sc
Measuring the responsivity over the entire response range means that the device will
probably fail the temperature linearity near the band edge.

S
...