EN 60269-6:2011/A1:2023

SLOVENSKI STANDARD
01-april-2024
Nizkonapetostne varovalke - 6. del: Dopolnilne zahteve za taljive vložke za zaščito
sončnih fotonapetostnih energijskih sistemov - Dodatek A1 (IEC 60269-
6:2010/A1:2021 + COR1:2021)
Low-voltage fuses - Part 6: Supplementary requirements for fuse-links for the protection
of solar photovoltaic energy systems (IEC 60269-6:2010/A1:2021 + COR1:2021)
Niederspannungssicherungen - Teil 6: Zusätzliche Anforderungen an
Sicherungseinsätze für den Schutz von solaren photovoltaischen
Energieerzeugungssystemen (IEC 60269-6:2010/A1:2021 + COR1:2021)
Fusibles basse tension - Partie 6: Exigences supplémentaires concernant les éléments
de remplacement utilisés pour la protection des systèmes d'énergie solaire
photovoltaïque (IEC 60269-6:2010/A1:2021 + COR1:2021)
Ta slovenski standard je istoveten z: EN 60269-6:2011/A1:2023
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60269-6:2011/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2023
ICS 29.120.50
English Version
Low-voltage fuses - Part 6: Supplementary requirements for
fuse-links for the protection of solar photovoltaic energy systems
(IEC 60269-6:2010/A1:2021 + COR1:2021)
Fusibles basse tension - Partie 6: Exigences Niederspannungssicherungen - Teil 6: Zusätzliche
supplémentaires concernant les éléments de remplacement Anforderungen an Sicherungseinsätze für den Schutz von
utilisés pour la protection des systèmes d'énergie solaire solaren photovoltaischen Energieerzeugungssystemen
photovoltaïque (IEC 60269-6:2010/A1:2021 + COR1:2021)
(IEC 60269-6:2010/A1:2021 + COR1:2021)
This amendment A1 modifies the European Standard EN 60269-6:2011; it was approved by CENELEC on 2021-05-14. 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.
This amendment 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60269-6:2011/A1:2023 E

European foreword
The text of document 32B/698/FDIS, future IEC 60269-6/A1 + COR1, prepared by SC 32B "Low-
voltage fuses" of IEC/TC 32 "Fuses" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN 60269-6:2011/A1:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-04-13
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-10-13
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 60269-6:2010/A1:2021 + COR1:2021 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.cencenelec.eu.
Replace the following reference:
Publication Year Title EN/HD Year
IEC 60269-1 - Low-voltage fuses - Part 1: General EN 60269-1 -
requirements
Add the following references:
Publication Year Title EN/HD Year
IEC 60364-7-712 - Electrical installations of buildings - Part 7- - -
712: Requirements for special installations
or locations - Solar photovoltaic (PV) power
supply systems
IEC 61386-1 - Conduit systems for cable management - EN 61386-1 -
Part 1: General requirements
IEC 61730-2 - Photovoltaic (PV) module safety - -
qualification - Part 2: Requirements for
testing
IEC 62548 - Photovoltaic (PV) arrays - Design - -
requirements
IEC 60269-6 ®
Edition 1.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Low-voltage fuses –
Part 6: Supplementary requirements for fuse-links for the protection of solar

photovoltaic energy systems
Fusibles basse tension –
Partie 6: Exigences supplémentaires concernant les éléments de remplacement

utilisés pour la protection des systèmes d'énergie solaire photovoltaïque

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-9631-8

– 2 – IEC 60269-6:2010/AMD1:2021
© IEC 2021
FOREWORD
This amendment has been prepared by subcommittee 32B: Low-voltage fuses, of IEC
technical committee 32: Fuses.
The text of this amendment is based on the following documents:
FDIS Report on voting
32B/698/FDIS 32B/699/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of November 2021 have been included in this copy.
_____________
1.1 Scope and object
Replace the first two sentences of the Scope with the following new text:
These supplementary requirements apply to fuse-links for protecting PV strings and PV arrays
in equipment for circuits of nominal voltages up to 1 500 V DC, and also, in so far as they are
applicable, for circuits of higher nominal voltages.
1.2 Normative references
Delete the date and the footnote after the following reference:
IEC 60269-1
Add the following new references:
IEC 61386-1, Conduit systems for cable management – Part 1: General requirements
IEC 61730-2, Photovoltaic (PV) module safety qualification – Part 2: Requirements for testing
IEC 62548, Photovoltaic (PV) arrays – Design requirements
IEC 60364-7-712, Low voltage electrical installations – Part 7-712: Requirements for special
installations or locations – Solar photovoltaic (PV) power supply systems

IEC 60269-6:2010/AMD1:2021 – 3 –
© IEC 2021
2 Terms and definitions
2.2 General terms
Add, after the title of 2.2, the following new note:
NOTE Photovoltaic = PV.
2.2.101
Replace the existing title and text of 2.2.101 with the following new title and text:
2.2.101
PV fuse-link
2.2.101.1
PV fuse-link (general)
fuse-link capable of breaking, under specified conditions, any current value within the
breaking range
NOTE A PV fuse-link operates under two main conditions:
• Short-circuit in a string (see IEC 62548 and IEC 60634-7-712 or in an array or sub-array (see IEC 62548 and
IEC 60634-7-712) which leads to a very low over-current.
• Short-circuit current supplied by the discharge of the PV inverter through a very low inductance. This condition
leads to a very high rate of rise of current equivalent to a low value of time constant, corresponding to
Table 104.
2.2.101.2
PV string fuse-link
fuse-link for the short-circuit and overload protection in a string
2.2.101.3
sub-array or array or array field fuse-link
fuse-link for the short-circuit and cable overload protection in an sub-array or array or array
field
2.2.101.4
functional earthing fuse-link
fuse-link for earthing circuit protection of the photovoltaic (or PV) arrays. Functional earthing
fuse-link arrangement can be found in IEC 60364-7-712 and IEC 62548
2.2.102
Delete existing Subclause 2.2.102.
2.2.103
Delete existing Subclause 2.2.103.
2.2.104
Delete the words “array field, assembly, generator, panel” from the text of Subclause 2.2.104
and renumber 2.2.104 to 2.2.102 and 2.104.1 to 2.2.102.1
Delete Subclauses 2.2.104.2, 2.2.104.3, 2.2.104.4 and 2.2.104.5.
Renumber 2.2.104.6 as 2.2.102.2 and 2.2.104.7 as 2.2.102.3.
2.2.105
Delete Subclause 2.2.105.
– 4 – IEC 60269-6:2010/AMD1:2021
© IEC 2021
2.2.106
Delete Subclause 2.2.106.
2.2.107
Renumber 2.2.107 as 2.2.102.4.
2.2.108
Renumber 2.2.108 as 2.2.102.5.
2.2.109
Renumber 2.2.109 as 2.2.103 and replace the existing text with the following new text:
2.2.103
currents
2.2.103.1
short circuit current
(symbol I ), (unit:A)
SC
electric current at the output terminals of a PV device at a particular temperature and
irradiance, when the device output voltage is equal or close to zero
2.2.103.2
maximum overcurrent rating
I
MOD_MAX_OCPR
PV module maximum overcurrent protection rating determined by IEC 61730-2
2.2.103.3
short circuit current of a PV module
I
SC MOD
short circuit current of a PV module or PV string at standard test conditions (STC), as
specified by the manufacturer
2.2.103.4
short circuit current of an array
I
SC ARRAY
short-circuit current of the PV array at standard test conditions (STC), which is equal to
I = I × N where N is the total number of parallel-connected PV strings in the
SC ARRAY SC MOD S S
PV array
NOTE 1 A PV string is a number of PV modules connected in series. The short circuit current of a string is equal
to I .
SC,MOD
2.2.103.5
short circuit current of an sub-array
I
SC S-ARRAY
short circuit current of a PV sub-array at standard test conditions (STC), which is equal to
I = I × N where N is the number of parallel-connected PV strings in the
SC S-ARRAY SC MOD SA SA
PV sub-array
2.2.103.6
maximum reverse current of an array
(symbol I ) (unit: A)
RM
maximum reverse current accepted by the module or the panel
2.2.110
Renumber 2.2.110 as 2.2.104.
IEC 60269-6:2010/AMD1:2021 – 5 –
© IEC 2021
Replace, in the title of 2.2.110, "photovoltaic" by "PV".
Delete Subclauses 2.2.110.1, 2.2.110.2, 2.2.110.3 and 2.2.110.4.
Renumber 2.2.110.5 as 2.2.104.1 and replace "output electrical current" by "load current".
Renumber 2.2.110.6 as 2.2.104.2.
Delete Subclause 2.2.110.7.
Table 101 – Conventional times and currents for “gPV” fuse-links

Replace existing Table 101 with the following new table:
Table 101 – Conventional times and currents for "gPV" fuse-links
Conventional current
Rated current Conventional time Type "gPV" Fuse type
A h I I
nf f
1 1,05 -
I ≤ 63 String fuse-link
n
1)
2 - 1,35
63 < I ≤ 160 2
n
* *
160 < I ≤ 400 3 1,13 1,45 Subarray or Array fuse-link
n
400 < I 4
n
1)
NOTE For I = 1,35 I the operating time is 2 h (The thermal withstand capability of a PV module under
f n
reverse current is qualified during a 2 h test specified in module safety test from IEC 61730 and is specified on
the module as the "maximum overcurrent protection" value).
*
The use of these values for conventional currents is not permitted in North America. String fuse-link
conventional current values are permitted for sub-array and array fuse-links

8.3.3 Measurement of power dissipation of the fuse-link
Add the following new sentence at the end of the second paragraph of 8.3.3:
This test maybe performed with either alternating or direct current.
8.4.3.1 Verification of conventional non-fusing and fusing current
Replace the existing first sentence of 8.4.3.1 with the following new sentence:
It is permissible to make the following tests at a reduced voltage and either alternating or
direct current.
Replace existing bullet point b) with the following new text:
b) The fuse-link is subjected to the conventional fusing current. It shall operate within the
conventional time (Table 101). For string fuse-links it is also acceptable when I = 1,35
...