SIST EN 61427-2:2016/A1:2025

SLOVENSKI STANDARD
01-maj-2025
Sekundarni členi in baterije za shranjevanje obnovljive energije - Splošne zahteve
in preskusne metode - 2. del: Omrežne izvedbe - Dopolnilo A1
Secondary cells and batteries for renewable energy storage - General requirements and
methods of test - Part 2: On-grid applications
Wiederaufladbare Zellen und Batterien für die Speicherung erneuerbarer Energien -
Allgemeine Anforderungen und Prüfverfahren - Teil 2: Netzgekoppelte Anwendungen
Accumulateurs pour le stockage de l'énergie renouvelable - Exigences générales et
méthodes d'essais - Partie 2: Applications en réseau
Ta slovenski standard je istoveten z: EN 61427-2:2015/A1:2024
ICS:
27.160 Sončna energija Solar energy engineering
29.220.20 Kislinski sekundarni členi in Acid secondary cells and
baterije batteries
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61427-2:2015/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2024
ICS 29.220.20
English Version
Secondary cells and batteries for renewable energy storage -
General requirements and methods of test - Part 2: On-grid
applications
(IEC 61427-2:2015/AMD1:2024)
Accumulateurs pour le stockage de l'énergie renouvelable - Wiederaufladbare Zellen und Batterien für die Speicherung
Exigences générales et méthodes d'essais - Partie 2 : erneuerbarer Energien - Allgemeine Anforderungen und
Applications en réseau Prüfverfahren - Teil 2: Netzgekoppelte Anwendungen
(IEC 61427-2:2015/AMD1:2024) (IEC 61427-2:2015/AMD1:2024)
This amendment A1 modifies the European Standard EN 61427-2:2015; it was approved by CENELEC on 2024-05-02. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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.
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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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61427-2:2015/A1:2024 E

European foreword
The text of document 21/1179/FDIS, future IEC 61427-2/AMD1, prepared by IEC/TC 21 "Secondary
cells and batteries" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-02-02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-05-02
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 61427-2:2015/AMD1:2024 was approved by CENELEC as
a European Standard without any modification.

IEC 61427-2 ®
Edition 1.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Secondary cells and batteries for renewable energy storage – General

requirements and methods of test –

Part 2: On-grid applications
Accumulateurs pour le stockage de l'énergie renouvelable – Exigences

générales et méthodes d'essais –

Partie 2 : Applications en réseau

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.220.20  ISBN 978-2-8322-8382-0

– 2 – IEC 61427-2:2015/AMD1:2024
© IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECONDARY CELLS AND BATTERIES FOR RENEWABLE ENERGY
STORAGE – GENERAL REQUIREMENTS AND METHODS OF TEST –

Part 2: On-grid applications
AMENDMENT 1
FOREWORD
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patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
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the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 61427-2:2015 has been prepared by IEC technical committee 21:
Secondary cells and batteries.
The text of this Amendment is based on the following documents:
Draft Report on voting
21/1179/FDIS 21/1194/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
IEC 61427-2:2015/AMD1:2024 – 3 –
© IEC 2024
The language used for the development of this Amendment is English.
A list of all parts in the IEC 61427 series, published under the general title Secondary cells and
batteries for renewable energy storage, can be found on the IEC website.
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
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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, or
• revised.
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.

___________
6 Battery endurance
6.1 General
Add the following at the end of 6.1:
Since the publication of this document in 2015, details of a complex pattern of energy exchange
in frequency-regulation duty, at 4 s intervals and over a 24 h period, have been published by
Pacific Northwest National Laboratory (PNNL) and Sandia National Laboratories (SAND) in the
PNNL-22010 Rev 2/ SAND 2016-3078 R Report.
In Annex B (informative) details of this energy exchange profile are made available for
evaluating, if useful, the service-induced decay of battery performance also with a more
randomized usage pattern compared to that offered by the symmetric 6.2 profile.
6.2 Test for endurance in frequency-regulation service
Add the following sentence as a new paragraph after the existing list item r).
See Annex B for supplemental test profile for frequency regulation duty service.

– 4 – IEC 61427-2:2015/AMD1:2024
© IEC 2024
Add the following new annex after Annex A:
Annex B
(informative)
Supplemental test profile for frequency regulation duty service
B.1 General
The batteries in on-grid electrical energy storage (EES) applications provide and accept the
energy needed to maintain the mains frequency within specified limits. This exchange of energy
results in multiple charge and discharge events per hour in the electrochemically active masses
of the battery. The order, intensity and duration of these events influences the stability and
activity of the involved active mass structures and hence the endurance of the batteries.
This additional test procedure for evaluating battery performance under frequency-regulation
service, is based on data acquired by actual monitoring of a regional transmission organization
grid frequency balancing signal by Pacific Northwest National Laboratory (PNNL) and Sandia
National Laboratories (SAND) in the USA.
The balancing signal data are reported in section 5.3.2 Frequ
...