EN 50524:2021
(Main)Data sheet for photovoltaic inverters
Data sheet for photovoltaic inverters
This document describes data sheet information for photovoltaic inverters in grid parallel operation. The intent of this document is to provide minimum information required to configure a safe and optimal system with photovoltaic inverters. In this context, data sheet information is a technical description separate from the photovoltaic inverter. NOTE The name plate is a sign of durable construction at or in the photovoltaic inverter. Its content can be found in an earlier version of this standard. For the sake of unique definition, it is sufficient defined in EN 62109 1 and EN 62109 2.
Datenblattangaben für Photovoltaik-Wechselrichter
Fiche technique pour les onduleurs photovoltaïques
Le présent document décrit les informations contenues dans la fiche technique des onduleurs photovoltaïques qui fonctionnent parallèlement au réseau. Ce document est destiné à fournir les informations minimales requises pour configurer un système sûr et optimal avec des onduleurs photovoltaïques. Dans ce contexte, les informations des fiches techniques correspondent à une description technique distincte de l’onduleur photovoltaïque. NOTE La plaque d’identification placée dans un onduleur photovoltaïque ou au niveau de celui-ci indique une construction durable. Son contenu peut être trouvé dans une version antérieure de la présente norme. Dans le but de fournir une définition unique, elle est définie de manière suffisamment précise dans l’EN 62109 1 et dans l’EN 62109 2.
Predstavitev tehničnih podatkov za fotonapetostne razsmernike
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN 50524:2010
Predstavitev tehničnih podatkov za fotonapetostne razsmernike
Data sheet for photovoltaic inverters
Datenblattangaben für Photovoltaik-Wechselrichter
Fiche technique pour les onduleurs photovoltaïques
Ta slovenski standard je istoveten z: EN 50524:2021
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 50524
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2021
ICS 27.160 Supersedes EN 50524:2009 and all of its amendments
and corrigenda (if any)
English Version
Data sheet for photovoltaic inverters
Fiche technique pour les onduleurs photovoltaïques Datenblattangaben für Photovoltaik-Wechselrichter
This European Standard was approved by CENELEC on 2021-07-26. 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50524:2021 E
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
3.1 Input side (PV - generator) . 5
3.2 Output side (Grid connection) . 6
3.3 Optional parameters . 7
4 Data sheet information . 9
4.1 General . 9
4.2 Short description. 9
4.3 Conformity . 9
4.4 Electrical parameters . 9
4.4.1 General . 9
4.4.2 Input parameters . 9
4.4.3 Output parameters . 9
4.4.4 Optional parameters .10
4.5 Characterization of the operating performance .10
4.6 Safety .12
4.7 Operating conditions .12
4.8 Fitting and construction .12
4.8.1 Physical characteristics .12
4.8.2 Other characteristics .12
Bibliography .13
Figures
Figure 1 — Representation of the inverter efficiency . 10
Figure 2 — Power reduction with increased ambient temperatures . 11
European foreword
This document (EN 50524:2021) has been prepared by CLC/TC 82 “Solar photovoltaic energy
systems”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2022-07-26
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards conflicting (dow) 2024-07-26
with this document have to be withdrawn
This document supersedes EN 50524:2009 and all of its amendments and corrigenda (if any).
— name plate requirements removed;
— revised list of electrical parameters to be indicated;
— information requirements for systems using external DC/DC converters included;
— maximum noise emission value harmonized with measuring method specified in EN 62109-1.
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.
1 Scope
This document describes data sheet information for photovoltaic inverters in grid parallel operation.
The intent of this document is to provide minimum information required to configure a safe and optimal
system with photovoltaic inverters.
In this context, data sheet information is a technical description separate from the photovoltaic
inverter.
NOTE The name plate is a sign of durable construction at or in the photovoltaic inverter. Its content can be
found in an earlier version of this standard. For the sake of unique definition, it is sufficient defined in EN 62109-1
and EN 62109-2.
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.
EN 50530, Overall efficiency of grid connected photovoltaic inverters
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60664-1, Insulation coordination for equipment within low-voltage systems - Part 1: Principles,
requirements and tests (IEC 60664-1)
EN IEC 60721-3-3, Classification of environmental conditions - Part 3-3: Classification of groups of
environmental parameters and their severities - Stationary use at weatherprotected locations
(IEC 60721-3-3)
EN IEC 60721-3-4, Classification of environmental conditions - Part 3-4: Classification of groups of
environmental parameters and their severities - Stationary use at non-weatherprotected locations
(IEC 60721-3-4)
EN 61683, Photovoltaic systems - Power conditioners - Procedure for measuring efficiency
(IEC 61683)
EN 62109-1, Safety of power converters for use in photovoltaic power systems - Part 1: General
requirements
ISO 216, Writing paper and certain classes of printed matter - Trimmed sizes - A and B series, and
indication of machine direction
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 Input side (PV - generator)
3.1.1
maximum input voltage
U
dcmax
maximum rated d.c. input voltage which the PCE is designed to withstand from the PV array
(i.e.maximum open-circuit voltage), under worst-case conditions of ambient temperature, irradiance,
etc.
[SOURCE: IEC 62109-1:2010, modified]
3.1.2
minimum input voltage
U
dcmin
minimum input voltage for the inverter to energize the utility grid, independent of mode of operation
3.1.3
start-up input voltage
U
dcstart
input voltage at which the inverter starts energizing the utility grid
3.1.4
rated input voltage
U
dc,r
input voltage specified by the manufacturer, to which other data sheet information refers
3.1.5
maximum MPP voltage
U
mppmax
maximum voltage at which the inverter can deliver its rated power in MPP mode
3.1.6
maximum operating voltage
U
opmax
maximum voltage at which the inverter can deliver its rated power
Note 1 to entry: U is used for non MPP inverters instead of U
opmax mppmax
3.1.7
minimum MPP voltage
U
mppmin
minimum voltage at which the inverter can deliver its rated power in MPP mode
Note 1 to entry: For inverters with independent inputs different Umppmin values may be needed for unbalanced
inputs.
3.1.8
Minimum operating voltage
U
opmin
minimum voltage at which the inverter can deliver its rated power
Note 1 to entry: Uopmin is used for non MPP inverters instead of Umppmin
3.1.9
maximum input current
I
dcmax
maximum current at which the inverter can operate. If the inverter has independent inputs, I is
dcmax
related to each single input
3.1.10
maximum short-circuit DC input current
I
scmax
absolute maximum total PV array short circuit current (DC) that the inverter is rated to have connected
to its input terminals, under worst-case conditions of ambient temperature, irradiance, etc
Note 1 to entry: This term is based on the term I in IEC 62109-1. It refers to the absolute maximum
sc, PV
current the DC input to the inverter is designed for under conditions of expected use. This differs from the simple
sum of the marked I ratings of the connected PV modules, since those markings are based on short-circuit
sc
conditions under standard test conditions and may be exceeded at temperatures or irradiance levels different
from the standard levels.
3.1.11
maximum input power
P
dcmax
Maximum PV array power at STC that the inverter is rated to have connected to its input terminals
Note 1 to entry: The maximum power cannot exceed I multiplied by U or U . The manufacturer
scmax mppmax opmax
can specify a lower value in order to secure the reliability and lifetime of the inverter.
3.2 Output side (Grid connection)
3.2.1
maximum grid voltage
U
acmax
maximum voltage at which the inverter can energize the grid
3.2.2
minimum grid voltage
U
acmin
minimum voltage at which the inverter can energize the grid
3.2.3
nominal grid voltage
U
acnom
utility grid voltage to which other data sheet information refers
3.2.4
maximum output current
I
acmax
maximum output current that the inverter can deliver in continuous operation
Note 1 to entry: The conditions for tests under continuous operation are specified in EN 62109-1:2010 General
conditions for testing.
3.2.5
rated power
P
ac,r
the active power the inverter can deliver in continuous operation
Note 1 to entry: The conditions for tests under continuous operation are specified in EN 62109-1:2010 General
conditions for testing.
3.2.6
maximum apparent power
S
ac,max
the maximum apparent power the inverter can deliver in continuous operation
Note 1 to entry: The conditions for tests under continuous operation are specified in EN 62109-1:2010 General
conditions for testing
3.2.7
nominal frequency
f
nom
utility grid frequency at which the inverter performs as specified
3.2.8
maximum frequency
f
max
maximum frequency at which the inverter can energize the grid
3.2.9
minimum frequency
f
min
minimum frequency at which the inverter can energize the grid
3.2.10
night-time power loss
power loss of the inverter, which is supplied from the public grid, when no solar generator power is
present and no other night-time services (e.g. grid support) are enabled
3.2.11
active factor
cosphi
for a two-terminal element or a two-terminal circuit under sinusoidal conditions, ratio of the active
power to the apparent power
Note 1 to entry: The active factor is equal to the cosine of the displacement angle.
[SOURCE: IEV 131-11-49]
3.3 Optional parameters
3.3.1
rated AC current
I
ac,r
rated AC current at rated power (P ), and nominal grid voltage (U )
ac,r acnom
3.3.2
maximum AC output power
P
acmax
maximum continuous active power the inverter can deliver under specified voltage or t
...
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