IEC 62109-3:2020

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.
The contents of the corrigendum of November 2020 have been included in this copy.

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.
Le contenu du corrigendum de novembre 2020 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 07-Jul-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.160 - Solar energy engineering
• Technical Committee: TC 82 - Solar photovoltaic energy systems
• Drafting Committee: WG 6 - TC 82/WG 6
• Current Stage: PPUB - Publication issued
• Start Date: 10-Jul-2020
• Completion Date: 08-Jul-2020

Relations

• Corrected By: IEC 62109-3:2020/COR1:2020 - Corrigendum 1 - Safety of power converters for use in photovoltaic power systems - Part 3: Particular requirements for electronic devices in combination with photovoltaic elements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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
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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

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
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