EN 61701:2012

SLOVENSKI STANDARD
01-maj-2012
1DGRPHãþD
SIST EN 61701:2001
Korozijsko preskušanje fotonapetostnih (PV) modulov v slani megli (IEC
61701:2011)
Salt mist corrosion testing of photovoltaic (PV) modules
Salznebel-Korrosionsprüfung von photovoltaischen (PV-) Modulen
Essai de corrosion au brouillard salin des modules photovoltaïques (PV)
Ta slovenski standard je istoveten z: EN 61701:2012
ICS:
27.160 6RQþQDHQHUJLMD Solar energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61701
NORME EUROPÉENNE
March 2012
EUROPÄISCHE NORM
ICS 27.160 Supersedes EN 61701:1999

English version
Salt mist corrosion testing of photovoltaic (PV) modules
(IEC 61701:2011)
Essai de corrosion au brouillard salin des Salznebel-Korrosionsprüfung von
modules photovoltaïques (PV) photovoltaischen (PV-)Modulen
(CEI 61701:2011) (IEC 61701:2011)

This European Standard was approved by CENELEC on 2012-01-19. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre 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, Turkey and the United Kingdom.

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

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61701:2012 E
Foreword
The text of document 82/668/FDIS, future edition 2 of IEC 61701, prepared by IEC TC 82, "Solar
photovoltaic energy systems" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 61701:2012.
The following dates are fixed:
(dop) 2012-10-19
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2015-01-19
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61701:1999.
— The scope has been updated to better reflect the applicability of the standard.
— Salt mist test is based on EN 60068-2-52 rather than EN 60068-2-11 as in EN 61701:1999 since
the former standard is much more widely used in the electronic component field. According to this
change EN 61701:2012 includes a cycling testing sequence that combines in each cycle a salt
fog exposure followed by humidity storage under controlled temperature and relative humidity
conditions. This testing sequence is more suitable to reflect the corrosion processes that happen
in PV modules subjected to permanent or temporary corrosive atmospheres (NaCl). In
EN 61701:1999 only a salt fog exposure was considered.
— Additional tests have also been included to verify the effect of the salt mist test not only in the PV
module output but also in some of its components.
— Different testing sequences are considered depending on the PV module technology involved:
crystalline silicon, thin-film and concentrator photovoltaic (CPV) modules.
— A test report clause has also been included.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 61701:2011 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 61701:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

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 60068-2-52 - Environmental testing - EN 60068-2-52 -
Part 2: Tests - Test Kb: Salt mist, cyclic
(sodium chloride solution)
IEC 61215 2005 Crystalline silicon terrestrial photovoltaic (PV) EN 61215 2005
modules - Design qualification and type
approval
IEC 61646 2008 Thin-film terrestrial photovoltaic EN 61646 2008
(PV) modules - Design qualification and type
approval
IEC 61730-2 (mod) 2004 Photovoltaic (PV) module safety qualification - EN 61730-2 2007
Part 2: Requirements for construction

IEC 62108 2007 Concentrator Photovoltaic (CPV) modules EN 62108 2008
and assemblies - Design qualification and
type approval
ISO/IEC 17025 - General requirements for the competence EN ISO/IEC 17025 -
of testing and calibration laboratories

IEC 61701 ®
Edition 2.0 2011-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Salt mist corrosion testing of photovoltaic (PV) modules

Essai de corrosion au brouillard salin des modules photovoltaïques (PV)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX N
ICS 27.160 ISBN 978-2-88912-840-2

– 2 – 61701 © IEC:2011
CONTENTS
FOREWORD . 3
1 Scope and object . 5
2 Normative references . 5
3 Samples . 6
4 Test procedures . 6
4.1 General . 6
4.2 Bypass diode functionality test . 6
4.2.1 Purpose . 6
4.2.2 Apparatus . 6
4.2.3 Procedure . 7
4.2.4 Requirements . 7
5 Preconditioning . 7
6 Initial measurements . 7
7 Salt mist test procedure . 8
8 Cleaning and recovery . 8
9 Final measurements . 9
10 Requirements . 10
10.1 General . 10
10.2 Crystalline silicon . 10
10.3 Thin-film technologies . 10
10.4 Concentrator photovoltaic (CPV) modules . 10
11 Test report. 11

Figure 1 – Salt mist corrosion testing sequence for crystalline silicon PV modules . 12
Figure 2 – Salt mist corrosion testing sequence for thin-film PV modules . 13
Figure 3 – Salt mist corrosion testing sequence for concentrator photovoltaic (CPV)
modules . 14

61701 © IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SALT MIST CORROSION TESTING OF PHOTOVOLTAIC (PV) MODULES

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 61701 has been prepared by IEC technical committee 82: Solar
photovoltaic energy systems.
This second edition cancels and replaces the first edition issued in 1995. This edition
constitutes a technical revision.
The main technical changes with respect to the previous edition are as follows:
The scope has been updated to better reflect the applicability of the Standard.
Salt mist test is based on IEC 60068-2-52 rather than IEC 60068-2-11 as in edition 1 since
the former Standard is much more widely used in the electronic component field. According to
this change the new edition 2 includes a cycling testing sequence that combines in each cycle
a salt fog exposure followed by humidity storage under controlled temperature and relative
humidity conditions. This testing sequence is more suitable to reflect the corrosion processes
that happen in PV modules subjected to permanent or temporary corrosive atmospheres
(NaCl). In edition 1 only a salt fog exposure was considered.

– 4 – 61701 © IEC
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