EN IEC 62109-3:2022

Safety of power converters for use in photovoltaic power systems - Part 3: Particular requirements for electronic devices in combination with photovoltaic elements

IEC 62109-3:2020 covers the particular safety requirements for electronic elements that are mechanically and/or electrically incorporated with photovoltaic (PV) modules or systems. Mechanically and/or electrically incorporated means that the whole combination of electronic device with the photovoltaic element is sold as one product. Nevertheless, tests provided in this document may also be used to evaluate compatibility of PV modules and electronic devices that are sold separately and are intended to be installed close to each other. The purpose of the requirements of this document is to provide additional safety-related testing requirements for the following types of integrated electronics, collectively referred to as module integrated equipment (MIE): a) Type A MIE where the PV element can be evaluated as a PV module according to IEC 61730-1 and IEC 61730‑2 independently from the electronic element; b) Type B MIE where the PV element cannot be evaluated as a PV module according to IEC 61730-1 and IEC 61730-2 independently from the electronic element.

Sicherheit von Leistungsumrichtern zur Anwendung in photovoltaischen Energiesystemen - Teil 3: Besondere Anforderungen an elektronische Geräte in Kombination mit Photovoltaikelementen

Sécurité des convertisseurs de puissance utilisés dans les systèmes photovoltaïques - Partie 3: Exigences particulières pour les dispositifs électroniques combinés aux éléments photovoltaïques

l’IEC 62109-3:2020 couvre les exigences particulières de sécurité concernant les éléments électroniques intégrés de manière mécanique et/ou électrique à des modules ou systèmes photovoltaïques (PV). “Intégrés de manière mécanique et/ou électrique” signifie que l’intégralité de la combinaison de l’appareil électronique et de l’élément photovoltaïque est vendue comme un seul et même produit. Cependant, les essais indiqués dans le présent document peuvent également être utilisés pour évaluer la compatibilité des modules PV et des appareils électroniques vendus séparément et destinés à être installés à proximité les uns des autres. Les exigences de la présente partie de l’IEC 62109 ont pour objet de fournir des exigences supplémentaires d’essai liées à la sécurité pour les types suivants d’électroniques intégrées, communément appelées “électroniques intégrées aux modules” (MIE-module integrated equipment): a) La MIE de type A, dans laquelle l’élément PV peut être évalué comme un module PV conforme à l’IEC 61730-1 et à l’IEC 61730-2, quel que soit l’élément électronique; b) La MIE de type B, dans laquelle l’élément PV ne peut pas être évalué comme un module PV conforme à l’IEC 61730-1 et à l’IEC 61730-2, quel que soit l’élément électronique.

Varnost močnostnih pretvornikov, ki se uporabljajo v fotonapetostnih sistemih - 3. del: Posebne zahteve za elektronske naprave v kombinaciji s fotonapetostnimi elementi

Standard IEC 62109-3:2020 zajema posebne varnostne zahteve za elektronske elemente, ki so mehansko in/ali električno povezani s fotonapetostnimi (PV) moduli ali sistemi.
Mehanska in/ali električna povezava pomeni, da se celotna kombinacija elektronske naprave s fotonapetostnim elementom prodaja kot en izdelek. Vseeno pa je mogoče preskuse, navedene v tem dokumentu, uporabiti tudi za oceno združljivosti fotonapetostnih modulov in elektronskih naprav, ki se jih prodaja ločeno in so nameščeni blizu en drugega.
Namen zahtev iz tega dokumenta je določiti dodatne preskusne zahteve glede varnosti za naslednje vrste vgrajene elektronike, ki jih skupno imenujemo oprema z vgrajenim modulom (MIE):
a) Oprema z vgrajenim modulom tipa A, kjer je fotonapetostni element mogoče opredeliti kot fotonapetostni modul v skladu s standardom IEC 61730-1 in IEC 61730-2, in sicer ločeno od elektronskega elementa;
b) Oprema z vgrajenim modulom tipa B, kjer fotonapetostnega elementa ni mogoče opredeliti kot fotonapetostni modul v skladu s standardom IEC 61730-1 in IEC 61730-2, in sicer ločeno od elektronskega elementa.

General Information

• Status: Published
• Publication Date: 20-Oct-2022
• ICS: 27.160 - Solar energy engineering
• Technical Committee: CLC/TC 82 - Solar photovoltaic energy systems
• Drafting Committee: IEC/TC 82 - IEC_TC_82
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 21-Oct-2022
• Completion Date: 21-Oct-2022
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: SIST EN IEC 62109-3:2023 - Safety of power converters for use in photovoltaic power systems - Part 3: Particular requirements for electronic devices in combination with photovoltaic elements

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2023
Varnost močnostnih pretvornikov, ki se uporabljajo v fotonapetostnih sistemih - 3.
del: Posebne zahteve za elektronske naprave v kombinaciji s fotonapetostnimi
elementi
Safety of power converters for use in photovoltaic power systems - Part 3: Particular
requirements for electronic devices in combination with photovoltaic elements
Sicherheit von Leistungsumrichtern zur Anwendung in photovoltaischen
Energiesystemen - Teil 3: Besondere Anforderungen an elektronische Geräte in
Kombination mit Photovoltaikelementen
Sécurité des convertisseurs de puissance utilisés dans les systèmes photovoltaïques -
Partie 3: Exigences particulières pour les dispositifs électroniques combinés aux
éléments photovoltaïques
Ta slovenski standard je istoveten z: EN IEC 62109-3:2022
ICS:
27.160 Sončna energija Solar energy engineering
29.200 Usmerniki. Pretvorniki. Rectifiers. Convertors.
Stabilizirano električno Stabilized power supply
napajanje
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62109-3

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2022
ICS 27.160
English Version
Safety of power converters for use in photovoltaic power
systems - Part 3: Particular requirements for electronic devices
in combination with photovoltaic elements
(IEC 62109-3:2020)
Sécurité des convertisseurs de puissance utilisés dans les Sicherheit von Leistungsumrichtern zur Anwendung in
systèmes photovoltaïques - Partie 3: Exigences photovoltaischen Energiesystemen - Teil 3: Besondere
particulières pour les dispositifs électroniques combinés aux Anforderungen an elektronische Geräte in Kombination mit
éléments photovoltaïques Photovoltaikelementen
(IEC 62109-3:2020) (IEC 62109-3:2020)
This European Standard was approved by CENELEC on 2022-09-14. 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62109-3:2022 E

European foreword
The text of document 82/1718/FDIS, future edition 1 of IEC 62109-3, prepared by IEC/TC 82 "Solar
photovoltaic energy systems" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 62109-3:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-06-14
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-09-14
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62109-3:2020 was approved by CENELEC as a European
Standard without any modification.
Annex A
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Clause 2 of EN 62109-1:2010 and EN 62109-2:2011 is applicable with the following additions:
Publication Year Title EN/HD Year
IEC 61215-2 2016 Terrestrial photovoltaic (PV) modules - Design EN 61215-2 2017
qualification and type approval - Part 2: Test
procedures
- - + AC 2017-07
IEC 61730-1 2016 Photovoltaic (PV) module safety qualification - EN IEC 61730-1 2018
Part 1: Requirements for construction
- - + AC 2018-06
IEC 61730-2 2016 Photovoltaic (PV) module safety qualification - EN IEC 61730-2 2018
Part 2: Requirements for testing
- - + AC 2018-06
IEC 61853-2 2016 Photovoltaic (PV) module performance testing EN 61853-2 2016
and energy rating - Part 2: Spectral
responsivity, incidence angle and module
operating temperature measurements
IEC 62109-1 2010 Safety of power converters for use in EN 62109-1 2010
photovoltaic power systems - Part 1: General
requirements
IEC 62109-2 2011 Safety of power converters for use in EN 62109-2 2011
photovoltaic power systems - Part 2:
Particular requirements for inverters
IEC 62790 2014 Junction boxes for photovoltaic modules - EN 62790 2015
Safety requirements and tests
IEC 62109-3 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety of power converters for use in photovoltaic power systems –

Part 3: Particular requirements for electronic devices in combination with

photovoltaic elements
Sécurité des convertisseurs de puissance utilisés dans les systèmes

photovoltaïques –
Partie 3: Exigences particulières pour les dispositifs électroniques combinés

aux éléments photovoltaïques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-8483-4

– 2 – IEC 62109-3:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General testing requirements . 9
4.1 General . 9
4.2 General conditions for testing . 16
4.2.1 Sequence of tests . 16
4.2.2 Reference test conditions . 18
4.3 Thermal testing . 18
4.3.2 Maximum temperatures . 18
4.4 Testing in single fault condition . 23
4.4.4 Single fault conditions to be applied . 23
4.8 Additional tests for grid-interactive inverters . 23
4.300 General requirements regarding protection of the PV element circuit of MIE . 23
5 Marking and documentation . 24
5.1 Marking . 24
5.1.1 General . 24
5.1.3 Identification . 24
5.1.4 Equipment ratings . 25
5.3 Documentation . 25
5.3.2 Information related to installation . 25
6 Environmental requirements and conditions . 25
7 Protection against electric shock and energy hazards . 25
8 Protection against mechanical hazards . 25
9 Protection against fire hazards . 25
10 Protection against sonic pressure hazards . 26
11 Protection against liquid hazards . 26
12 Protection against chemical hazards . 26
13 Physical requirements . 26
13.4 Internal wiring and connections . 26
13.4.5 Interconnection between parts of the PCE . 26
13.9 Fault indication . 27
13.9.300 Fault indication for MIE . 27
13.300 Requirements for field assembled MIE . 27
14 Components . 27
15 Software and firmware performing safety functions . 27
Annex A (normative) Alternative method for PV module nominal backsheet
temperature (T ) . 28
NBs
A.1 General . 28
A.2 Principle . 28
A.3 Test procedure . 28

IEC 62109-3:2020 © IEC 2020 – 3 –
Figure 300 – Test sequence . 17
Figure 301 – Location of heating pads . 20
Figure 302 – Test setup for Type B MIE (cross-section view) . 22
Figure 303 – Test setup for Type A MIE (cross-section view) . 22

Table 300 – IEC 61730-2:2016 test reference for Type A and Type B MIE . 11

– 4 – IEC 62109-3:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF POWER CONVERTERS
FOR USE IN PHOTOVOLTAIC POWER SYSTEMS –

Part 3: Particular requirements for electronic devices
in combination with photovoltaic elements

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 tec
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