EN IEC 62093:2022
(Main)Photovoltaic system power conversion equipment - Design qualification and type approval
Photovoltaic system power conversion equipment - Design qualification and type approval
This International Standard lays down IEC requirements for the design qualification of power conversion equipment (PCE) suitable for long-term operation in terrestrial photovoltaic (PV) systems. 1.1 Equipment included in this scope This document covers the following items in its scope: electronic power conversion equipment intended for use in terrestrial PV applications. The term PCE refers to equipment and components for electronic power conversion of electric power into another kind of electric power with respect to voltage, current, and frequency. This standard is suitable for PCE for use in both indoor and outdoor climates as defined in IEC 60721-3-3 and IEC 60721-3-4. Such equipment may include, but is not limited to, grid-tied and off-grid DC-to-AC PCEs, DC-to-DC converters, battery charger converters, and battery charge controllers. This standard covers PCE that is connected to PV arrays that do not nominally exceed a maximum circuit voltage of 1500 V DC. The equipment may also be connected to systems not exceeding 1000 V AC at the AC mains circuits, non-main AC load circuits, and to other DC source or load circuits such as batteries. If particular ancillary parts whereby manufacturers and models are specified in the manual for use with the PCE, then those parts shall be tested with the PCE. 1.2 Equipment for which other requirements may apply This standard has not been written to address characteristics of power sources other than PV systems, such as wind turbines, fuel cells, rotating machine sources, etc. This standard has not been written with the intent of addressing the characteristics of power electronic conversion equipment fully integrated into photovoltaic modules. Separate standards exist or are in development for those types of devices. It is, however, applicable to devices where the manufacturer explicitly specifies the capability of full detachment from and subsequent reattachment to the PV module or if the input and output terminals can be accessed and a specification sheet for the PCE is available. Devices meeting these requirements may be tested as individual samples independent from the PV module. This standard does not apply to power conversion equipment with integrated (built-in) electrochemical energy storage (e.g. lead acid or lithium-ion). It is, however, applicable to equipment where the manufacturer specifies and permits complete removal of the electrochemical energy storage from the PCE so that stand-alone assessment of the PCE with the storage removed becomes possible. 1.3 Object The object of the test sequences contained herein is to establish a basic level of durability and to show, as far as it is possible within reasonable constraints of cost and time, that the PCE is capable of maintaining this performance after prolonged exposure to the simulated environmental stresses described herein that are based on the intended use conditions specified by the manufacturer. Optional tests contained herein may be selected depending on the intended installation, market, or special environmental conditions that the PCE is anticipated to experience. The categorization imposes differentiated test sequences and test severity levels reflecting the different requirements of mechanical and electrical 56 components in different environments. PCE are grouped into categories based on size and installation environment. The actual life expectancy of components so qualified will depend on their design, their environment, and the conditions under which they are operated. Estimation of a lifetime and wear out is not generally covered by this standard.
Leistungsumrichter für photovoltaische Systeme - Prüfung der Bauarteignung
Matériel de conversion de puissance des systèmes photovoltaïques - Qualification de la conception et approbation de type
IEC 62093:2022 spécifie les exigences de l’IEC relatives à la qualification de la conception du matériel de conversion de puissance (PCE) adapté pour un fonctionnement de longue durée des systèmes photovoltaïques (PV) terrestres. Le présent document couvre le matériel électronique de conversion de puissance destiné à être utilisé dans les applications PV terrestres. Le terme PCE désigne le matériel et les composants de conversion de puissance électronique qui permettent de convertir l’énergie électrique en un autre type d’énergie électrique sur les critères de tension, de courant et de fréquence. Le présent document convient pour l’utilisation des PCE dans les conditions climatiques intérieures et extérieures définies dans l’IEC 60721-3-3 et l’IEC 60721-3-4. Un tel matériel peut comprendre, mais sans s’y limiter, les PCE de courant continu à alternatif sur réseau et hors réseau, les convertisseurs continu-continu, les convertisseurs de chargeur de batterie et les contrôleurs de charge de batterie. Le présent document couvre les PCE connectés à des générateurs PV dont la tension nominale ne dépasse pas une tension de circuit maximale de 1 500 V en courant continu. Cette deuxième édition annule et remplace la première édition parue en 2005. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: a. modification du titre; b. cette édition met l’accent sur la qualification de la conception de l’électronique de conversion de puissance (PCE), et élimine les articles et paragraphes associés aux essais de qualification d’autres composants d’équilibrage de système; c. bien que de nombreux titres d’articles et de paragraphes aient été conservés, des modifications significatives ont été apportées; d. la première édition établit les exigences relatives à la qualification de la conception des autres composants d’équilibrage utilisés dans les systèmes photovoltaïques (PV) terrestres, alors que cette édition se limite au matériel de conversion de puissance; e. modification des protocoles d’essai.
Pretvorniki energije za fotonapetostne sisteme - Ocena zasnove in odobritev tipa
Ta mednarodni standard določa zahteve IEC za oceno zasnove pretvornikov energije (PCE), primernih za dolgotrajno uporabo v prizemnih fotonapetostnih (PV) sistemih.
1.1 Oprema, ki spada na to področje uporabe
Področje uporabe tega dokumenta zajema naslednje elemente: elektronski pretvorniki energije, namenjeni za uporabo v prizemnih fotonapetostnih napravah. Izraz »pretvorniki energije« se navezuje na opremo in sestavne dele za elektronsko močnostno pretvorbo električne energije v drugo vrsto električne energije glede na napetost, tok in frekvenco. Ta standard je primeren za pretvornike energije, ki se uporabljajo v notranjem in zunanjem okolju, kot je opredeljeno v standardih IEC 60721-3-3 in IEC 60721-3-4. Taka oprema lahko med drugim vključuje pretvornike energije za pretvorbo enosmernega toka v izmenični tok, ki se uporabljajo znotraj in zunaj omrežja, pretvornike enosmernega toka v enosmerni tok, pretvornike za napajalnike baterij in naprave za nadzor napolnjenosti baterij.
Ta standard zajema pretvornike energije, priključene na fotonapetostne sisteme, katerih nominalna vrednost ne presega največje napetosti tokokroga 1500 V DC. Oprema se lahko priključi tudi na sisteme, ki ne presegajo 1000 V AC v omrežnem tokokrogu z izmeničnim tokom, neomrežne obremenitvene tokokroge z izmeničnim tokom in druge tokokroge z virom enosmernega toka oz. obremenitvene tokokroge (npr. baterije). Če so za uporabo s pretvorniki energije v priročniku navedeni določeni pomožni deli (vključno s proizvajalci in modeli), je treba te dele preskusiti s pretvorniki energije.
1.2 Oprema, za katero morda veljajo druge zahteve
Ta standard ni namenjen obravnavi značilnosti virov napajanja, ki niso fotonapetostni sistemi (npr. vetrne turbine, gorivne celice, viri rotacijskih strojev itd.).
Ta standard ni namenjen obravnavi značilnosti elektronskih pretvornikov energije, ki so v celoti vgrajeni v fotonapetostne module. Za te vrste naprav obstajajo oziroma so v pripravi ločeni standardi. Vendar pa se uporablja za naprave, pri katerih proizvajalec izrecno navede, da jih je mogoče v celoti odklopiti s fotonapetostnega modula in jih nato znova priklopiti, ali če je mogoče dostopati do vhodnih in izhodnih terminalov in je na voljo specifikacija za pretvornik energije. Naprave, ki izpolnjujejo te zahteve, se lahko preskusi kot posamezne vzorce, neodvisne od fotonapetostnega modula.
Ta standard se ne uporablja za pretvornike energije z integriranim (vgrajenim) elektrokemičnim shranjevanjem energije (npr. svinčeno-kislinske ali litij-ionske baterije). Vendar pa se uporablja za pretvornike, pri katerih proizvajalec navede in dovoljuje popolno odstranitev elektrokemičnega shranjevanja energije iz pretvornika energije, tako da je mogoče izvesti samostojno oceno pretvornika.
1.3 Namen
Namen zaporedij preskusov iz tega dokumenta je vzpostaviti osnovno raven trajnosti in prikazati (kot je mogoče v razumnih stroškovnih in časovnih omejitvah), da lahko pretvornik energije ohrani to zmogljivost po dolgotrajnejši izpostavljenosti simuliranim okoljskim obremenitvam, opisanim v tem dokumentu, ki temeljijo na pogojih predvidene uporabe, ki jih določi proizvajalec. Neobvezni preskusi iz tega dokumenta se lahko izberejo glede na predvideno namestitev, tržišče ali posebne okoljske pogoje, ki naj bi jim bil pretvornik energije izpostavljen. Kategorizacija zahteva raznolika zaporedja preskusov in stopnje zahtevnosti preskusa,
ki odražajo različne zahteve mehanskih in električnih sestavnih delov v različnih okoljih.
Pretvorniki energije so razvrščeni v kategorije glede na velikost in okolje namestitve.
Dejanska pričakovana življenjska doba tako kvalificiranih sestavnih delov je odvisna od njihove zasnove, okolja uporabe in pogojev delovanja. Ocena življenjske dobe in obrabe na splošno ni zajeta v tem standardu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2022
Nadomešča:
SIST EN 62093:2005
Pretvorniki energije za fotonapetostne sisteme - Ocena zasnove in odobritev tipa
Photovoltaic system power conversion equipment - Design qualification and type
approval
Leistungsumrichter für photovoltaische Systeme - Prüfung der Bauarteignung
Matériel de conversion de puissance des systèmes photovoltaïques - Qualification de la
conception et approbation de type
Ta slovenski standard je istoveten z: EN IEC 62093:2022
ICS:
27.160 Sončna energija Solar energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 62093
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2022
ICS 27.160 Supersedes EN 62093:2005 and all of its amendments
and corrigenda (if any)
English Version
Photovoltaic system power conversion equipment - Design
qualification and type approval
(IEC 62093:2022)
Matériel de conversion de puissance des systèmes Leistungsumrichter für photovoltaische Systeme - Prüfung
photovoltaïques - Qualification de la conception et der Bauarteignung
approbation de type (IEC 62093:2022)
(IEC 62093:2022)
This European Standard was approved by CENELEC on 2022-02-14. 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,
Turkey 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 62093:2022 E
European foreword
The text of document 82/1963/FDIS, future edition 2 of IEC 62093, prepared by IEC/TC 82 "Solar
photovoltaic energy systems" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 62093:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-11-14
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-02-14
document have to be withdrawn
This document supersedes EN 62093:2005 and all of its amendments and corrigenda (if any).
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.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association.
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 62093:2022 was approved by CENELEC as a European
Standard without any modification.
Annex ZA
(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.
Publication Year Title EN/HD Year
IEC 60068-2-2 2007 Environmental testing - Part 2-2: Tests - EN 60068-2-2 2007
Test B: Dry heat
IEC 60068-2-6 - Environmental testing - Part 2-6: Tests - EN 60068-2-6 -
Test Fc: Vibration (sinusoidal)
IEC 60068-2-14 - Environmental testing - Part 2-14: Tests - EN 60068-2-14 -
Test N: Change of temperature
IEC 60068-2-27 - Environmental testing - Part 2-27: Tests - EN 60068-2-27 -
Test Ea and guidance: Shock
IEC 60068-2-52 - Environmental testing - Part 2-52: Tests – EN IEC 60068-2-52 -
Test Kb: Salt mist, cyclic (sodium, chloride
solution)
IEC 60068-2-60 2015 Environmental testing - Part 2-60: Tests - EN 60068-2-60 2015
Test Ke: Flowing mixed gas corrosion test
IEC 60068-2-68 - Environmental testing - Part 2-68: Tests - EN 60068-2-68 -
Test L: Dust and sand
IEC 60068-2-78 - Environmental testing - Part 2-78: Tests - EN 60068-2-78 -
Test Cab: Damp heat, steady state
IEC 60068-3-5 2018 Environmental testing - Part 3-5: EN IEC 60068-3-5 2018
Supporting documentation and guidance -
Confirmation of the performance of
temperature chambers
IEC 60068-3-6 - Environmental testing - Part 3-6: EN IEC 60068-3-6 -
Supporting documentation and guidance –
Confirmation of the performance of
temperature/humidity changes
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code)
- - + corrigendum May 1993
+ A1 1999 + A1 2000
+ A2 2013 + A2 2013
IEC 60721-3-3 - Classification of environmental conditions - EN IEC 60721-3-3 -
Part 3-3: Classification of groups of
environmental parameters and their
severities - Stationary use at weather
protected locations
IEC 60721-3-4 - Classification of environmental conditions - EN IEC 60721-3-4 -
Part 3-4: Classification of groups of
environmental parameters and their
severities - Stationary use at non-weather
protected locations
IEC 61000-3-2 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-3-2 -
3-2: Limits - Limits for harmonic current
emissions (equipment input current ≤ 16 A
per phase)
IEC 61000-3-12 - Electromagnetic compatibility (EMC) - Part EN 61000-3-12 -
3-12: Limits - Limits for harmonic currents
produced by equipment connected to
public low-voltage systems with input
current >16 A and ≤ 75 A per phase
IEC/TR 61000-3-14 - Electromagnetic compatibility (EMC) - Part
3-14: Assessment of emission limits for
harmonics, interharmonics, voltage
fluctuations and unbalance for the
connection of disturbing installations to LV
power systems
IEC 61180 - High-voltage test techniques for low- EN 61180 -
voltage equipment - Definitions, test and
procedure requirements, test equipment
IEC 61557-1 - Electrical safety in low voltage distribution EN IEC 61557-1 -
systems up to 1 000 V AC and 1 500 V DC
- Equipment for testing, measuring or
monitoring of protective measures - Part 1:
General requirements
IEC/TS 61836 - Solar photovoltaic energy systems -
Terms, definitions and symbols
IEC 62109-1 2010 Safety of power converters for use in EN 62109-1 2010
photovoltaic power systems - Part 1:
General requirements
IEC 62116 2014 Utility-interconnected photovoltaic inverters EN 62116 2014
- Test procedure of islanding prevention
measures
IEC 62477-1 2012 Safety requirements for power electronic EN 62477-1 2012
converter systems and equipment - Part 1:
General
- - + A11 2014
+ A1 2016 + A1 2017
- - + A12 2021
IEC 62716 2013 Photovoltaic (PV) modules - Ammonia EN 62716 2013
corrosion testing
IEC 62852 - Connectors for DC-application in EN 62852 -
photovoltaic systems - Safety requirements
and tests
IEC 62894 2014 Photovoltaic inverters - Data sheet and - -
name plate
+ A1 2016 - -
IEC/TS 63106-2 Basic requirements for simulator used for - -
testing of photovoltaic power conversion
equipment - Part 2: DC power simulator
ISO 4892-2 - Plastics - Methods of exposure to EN ISO 4892-2 -
laboratory light sources - Part 2: Xenon-arc
lamps
ISO 12103-1 2016 Road vehicles - Test contaminants for filter - -
evaluation - Part 1: Arizona test dust
ISO 22479 2019 Corrosion of metals and alloys - Sulfur - -
dioxide test in a humid atmosphere (fixed
gas method)
IEC 62093 ®
Edition 2.0 2022-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Photovoltaic system power conversion equipment – Design qualification and
type approval
Matériel de conversion de puissance des systèmes photovoltaïques –
Qualification de la conception et approbation de type
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-1064-7
– 2 – IEC 62093:2022 © IEC 2022
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
4 Sampling . 13
5 Testing requirements . 14
5.1 General . 14
5.2 Environmental service conditions . 14
5.2.1 General . 14
5.2.2 Outdoor . 14
5.2.3 Indoor, unconditioned . 15
5.2.4 Indoor, conditioned . 15
5.3 Test sequences . 15
5.3.1 General . 15
5.3.2 Test conditions for Category 1 PCE (Module level power electronics) . 15
5.3.3 Test conditions for Category 3 PCE–large scale and Category 4 PCE–
central large scale power conversion equipment . 16
5.3.4 Test conditions for Category 4 PCE (large central power conversion
equipment) . 16
5.4 General testing requirements . 21
5.4.1 Installation of testing sample . 21
5.4.2 Peripherals . 21
5.4.3 Connectors and wiring . 21
5.4.4 Measuring instruments and monitoring equipment . 21
5.4.5 Electrical power sources . 21
5.4.6 Electrical loads . 22
5.4.7 Earthing terminals . 22
5.4.8 Controls . 22
5.5 Pass criteria . 23
6 Test procedures . 23
6.1 Visual inspection . 23
6.1.1 Purpose . 23
6.1.2 Apparatus . 23
6.1.3 Procedure . 23
6.1.4 Requirements . 23
6.2 Characterization of operating performance . 24
6.2.1 Purpose . 24
6.2.2 Apparatus . 24
6.2.3 Procedure . 24
6.2.4 Restrictions and exceptions . 24
6.2.5 Requirements . 24
6.3 Functionality test . 24
6.3.1 Purpose . 24
6.3.2 Apparatus . 25
6.3.3 Procedure . 25
6.3.4 Restrictions and exceptions . 26
6.3.5 Requirements . 26
IEC 62093:2022 © IEC 2022 – 3 –
6.4 Voltage (dielectric strength) test . 26
6.4.1 Purpose . 26
6.4.2 Apparatus . 26
6.4.3 Procedure . 27
6.5 Bus link capacitor thermal test . 27
6.5.1 Purpose . 27
6.5.2 Apparatus . 27
6.5.3 Procedure . 27
6.5.4 Restrictions and exceptions . 29
6.5.5 Requirements . 29
6.6 Power transistor module thermal test . 30
6.6.1 Purpose . 30
6.6.2 Apparatus . 30
6.6.3 Procedure . 30
6.6.4 Restrictions and exceptions . 30
6.6.5 Requirements . 31
6.7 Humidity freeze test . 31
6.7.1 Purpose . 31
6.7.2 Apparatus . 31
6.7.3 Procedure . 32
6.7.4 Restrictions and exceptions . 33
6.7.5 Final measurements . 33
6.7.6 Requirements . 33
6.8 Thermal cycling test . 34
6.8.1 Purpose . 34
6.8.2 Apparatus . 34
6.8.3 Procedure . 35
6.8.4 Restrictions and exceptions . 37
6.8.5 Final measurements . 37
6.8.6 Requirements . 37
6.9 Damp heat test . 37
6.9.1 Purpose . 37
6.9.2 Apparatus . 38
6.9.3 Procedure . 38
6.9.4 Restrictions and exceptions . 40
6.9.5 Final measurements . 40
6.9.6 Requirements . 40
6.10 Dry heat test . 40
6.10.1 Purpose . 40
6.10.2 Apparatus . 40
6.10.3 Procedure . 41
6.10.4 Restrictions and exceptions . 42
6.10.5 Final measurements . 42
6.10.6 Requirements . 42
6.11 UV weathering test. 43
6.11.1 Purpose . 43
6.11.2 Apparatus . 43
6.11.3 Procedure . 43
6.11.4 Restrictions and exceptions . 43
– 4 – IEC 62093:2022 © IEC 2022
6.11.5 Requirements . 43
7 Optional tests . 44
7.1 General . 44
7.2 Rain intrusion test . 44
7.2.1 Purpose . 44
7.2.2 Apparatus . 44
7.2.3 Procedure . 44
7.2.4 Restrictions and exceptions . 45
7.2.5 Final measurements . 45
7.2.6 Requirements . 45
7.3 Wind driven rain test . 46
7.3.1 Purpose . 46
7.3.2 Apparatus . 46
7.3.3 Procedure . 46
7.3.4 Restrictions and exceptions . 47
7.3.5 Final measurements . 47
7.3.6 Requirements . 47
7.4 Dust test . 47
7.4.1 Purpose . 47
7.4.2 Apparatus . 48
7.4.3 Procedure . 48
7.4.4 Exceptions and restrictions . 48
7.4.5 Requirements . 48
7.5 Shipping vibration test . 49
7.5.1 Purpose . 49
7.5.2 Apparatus . 49
7.5.3 Procedure . 50
7.5.4 Restrictions and exceptions . 50
7.5.5 Final measurements . 50
7.5.6 Requirements . 50
7.6 Shock test . 50
7.6.1 Purpose . 50
7.6.2 Apparatus . 50
7.6.3 Procedure . 50
7.6.4 Restrictions and exceptions . 51
7.6.5 Final measurements . 51
7.6.6 Requirements . 51
7.7 Salt mist test . 51
7.7.1 Purpose . 51
7.7.2 Apparatus . 51
7.7.3 Procedure . 51
7.7.4 Restrictions and exceptions . 52
7.7.5 Final measurements . 52
7.7.6 Requirements . 52
7.8 Mixed gas corrosion test . 52
7.8.1 General . 52
7.8.2 Apparatus . 52
7.8.3 Procedure . 52
7.8.4 Restrictions and exceptions . 52
IEC 62093:2022 © IEC 2022 – 5 –
7.8.5 Final measurements . 52
7.8.6 Requirements . 52
7.9 Ammonia corrosion test . 53
7.9.1 Purpose . 53
7.9.2 Apparatus . 53
7.9.3 Procedure . 53
7.9.4 Final measurements . 53
7.9.5 Requirements . 53
8 Report . 53
Annex A (normative) Specification of tests performed for reporting . 55
Bibliography . 56
Figure 1 – Test sequence for PCEs of Categories 1 to 4 . 17
Figure 2 – Alternative test sequence for Category 3 PCE . 18
Figure 3 – Chamber temperature/humidity profile and power for humidity freeze test . 32
Figure 4 – Thermal cycling test – Temperature and output power profile . 35
Figure 5 – Damp heat test profile . 39
Figure 6 – Dry heat test – Temperature and input voltage profile . 41
Figure 7 – Reference for dust accumulation evaluation level . 49
Table 1 – Testing sample quantity . 14
Table 2 – Environmental condition classifications . 15
Table 3 – Summary of test levels (main test sequence) . 19
Table 4 – Summary of test levels (optional tests) . 20
Table 5 – Temperature and humidity limits for humidity freeze test . 33
Table 6 – Upper and lower temperature limits for thermal cycling test . 36
Table 7 – Temperature and humidity limits for damp heat test. 39
Table 8 – Temperature limits for dry heat test . 42
– 6 – IEC 62093:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC SYSTEM POWER CONVERSION EQUIPMENT –
DESIGN QUALIFICATION AND TYPE APPROVAL
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.
IEC 62093 has been prepared by IEC technical committee 82: Solar photovoltaic energy
systems. It is an International Standard.
This second edition cancels and replaces the first edition published in 2005. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Title modified.
b) This edition focusses on the design qualification of power conversion electronics (PCE), and
eliminates the clauses associated with qualification testing of other balance of system
components.
c) While many clause titles remain the same as the first edition, substantial changes have been
made.
d) Whereas the first edition establishes requirements for the design qualification of balance-
of-system components used in terrestrial photovoltaic (PV) systems, this edition is limited
to power conversion equipment.
IEC 62093:2022 © IEC 2022 – 7 –
e) The test protocols have been changed.
The text of this International Standard is based on the following documents:
Draft Report on voting
82/1963/FDIS 82/1983/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
– 8 – IEC 62093:2022 © IEC 2022
PHOTOVOLTAIC SYSTEM POWER CONVERSION EQUIPMENT –
DESIGN QUALIFICATION AND TYPE APPROVAL
1 Scope
This document lays down IEC requirements for the design qualification of power conversion
equipment (PCE) suitable for long-term operation in terrestrial photovoltaic (PV) systems.
This document covers electronic power conversion equipment intended for use in terrestrial PV
applications. The term PCE refers to equipment and components for electronic power
conversion of electric power into another kind of electric power with respect to voltage, current,
and frequency. This document is suitable for PCE for use in both indoor and outdoor climates
as defined in IEC 60721-3-3 and IEC 60721-3-4. Such equipment may include, but is not limited
to, grid-tied and off-grid DC-to-AC PCEs, DC-to-DC converters, battery charger converters, and
battery charge controllers.
This document covers PCE that is connected to PV arrays that do not nominally exceed a
maximum circuit voltage of 1 500 V DC. The equipment may also be connected to systems not
exceeding 1 000 V AC at the AC mains circuits, non-main AC load circuits, and to other DC
source or load circuits such as batteries. If particular ancillary parts whereby manufacturers
and models are specified in the manual for use with the PCE, then those parts are tested with
the PCE.
Exceptions:
a) This document does not address characteristics of power sources other than PV systems,
such as wind turbines, fuel cells, rotating machine sources, etc.
b) This document does not address the characteristics of power electronic conversion
equipment fully integrated into photovoltaic modules. Separate standards exist or are in
development for those types of devices. It is, however, applicable to devices where the
manufacturer explicitly specifies the capability of full detachment from and subsequent
reattachment to the PV module or if the input and output terminals can be accessed and a
specification sheet for the PCE is available. Devices meeting these requirements may be
tested as individual samples independent from the PV module.
c) This document does not apply to power conversion equipment with integrated (built-in)
electrochemical energy storage (e.g. lead acid or lithium-ion). It is, however, applicable to
equipment where the manufacturer specifies and permits complete removal of the
electrochemical energy storage from the PCE so that stand-alone assessment of the PCE
with the storage removed becomes possible.
The object of the test sequences contained herein is to establish a basic level of durability and
to show, as far as it is possible within reasonable constraints of cost and time, that the PCE is
capable of maintaining its performance after prolonged exposure to the simulated environmental
stresses described herein that are based on the intended use conditions specified by the
manufacturer. Optional tests contained herein may be selected depending on the intended
installation, market, or special environmental conditions that the PCE is anticipated to
experience. The categorization imposes differentiated test sequences and test severity levels
reflecting the different requirements of mechanical and electrical components in different
environments.
PCEs are grouped into categories based on size and installation environment.
The actual life expectancy of components so qualified depends on their design, their
environment, and the conditions under which they are operated. Estimation of a lifetime and
wear out is not generally covered by this document.
IEC 62093:2022 © IEC 2022 – 9 –
2 Normative references
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.
IEC 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat
IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-14, Environmental testing – Part 2-14: Tests – Test N: Change of temperature
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-52, Environmental testing – Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium,
chloride solution)
IEC 60068-2-60:2015, Environmental testing – Part 2-60: Tests – Test Ke: Flowing mixed gas
corrosion test
IEC 60068-2-68, Environmental testing – Part 2-68: Tests – Test L: Dust and sand
IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state
IEC 60068-3-5:2018, Environmental testing – Part 3-5: Supporting documentation and guidance
– Confirmation of the performance of temperature chambers
IEC 60068-3-6, Environmental testing – Part 3-6: Supporting documentation and guidance –
Confirmation of the performance of temperature/ humidity chambers
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60721-3-3, Classification of environmental conditions – Part 3-3: Classification of groups
of environmental parameters and their severities – Stationary use at weather protected
locations
IEC 60721-3-4, Classification of environmental conditions – Part 3-4: Classification of groups
of environmental parameters and their severities – Stationary use at non-weather protected
locations
IEC 61000-3-2, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic
current emissions (equipment input current ≤16 A per phase)
IEC 61000-3-12, Electromagnetic compatibility (EMC) – Part 3-12: Limits – Limits for harmonic
currents produced by equipment connected to public low-voltage systems with input current >16
A and ≤75 A per phase
IEC TR 61000-3-14, Electromagnetic compatibility (EMC) – Part 3-14: Assessment of emission
limits for harmonics, interharmonics, voltage fluctuations and unbalance for the connection of
disturbing installations to LV power systems
IEC 61180, High-voltage test techniques for low-voltage equipment – Definitions, test and
procedure requirements, test equipment
– 10 – IEC 62093:2022 © IEC 2022
IEC 61557-1, Electrical safety in low voltage distribution systems up to 1 000 V AC and
1 500 V DC – Equipment for testing, measuring or monitoring of protective measures – Part 1:
General requirements
IEC TS 61836, Solar photovoltaic energy systems – Terms, definitions and symbols
IEC 62109-1:2010, Safety of power converters for use in photovoltaic power systems – Part 1:
General requirements
IEC 62116:2014, Utility-interconnected photovoltaic inverters – Test procedure of islanding
prevention measures
IEC 62477-1:2012, Safety requirements for power electronic converter systems and equipment
– Part 1: General
IEC 62477-1:2012/AMD1:2016
IEC 62716:2013, Photovoltaic (PV) modules – Ammonia corrosion testing
IEC 62852, Connectors for DC-application in photovoltaic systems – Safety requirements and
tests
IEC 62894:2014, Photovoltaic inverters – Data sheet and name plate
IEC 6289
...








Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...