IEC 60269-7:2021

IEC 60269-7 ®
Edition 1.0 2021-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low voltage fuses –
Part 7: Supplementary Requirements for fuse-links for the protection of batteries
and battery systems
Fusibles basse tension –
Partie 7: Exigences supplémentaires concernant les éléments de remplacement
utilisés pour la protection des batteries et des systèmes de batterie

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IEC 60269-7 ®
Edition 1.0 2021-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low voltage fuses –
Part 7: Supplementary Requirements for fuse-links for the protection of

batteries and battery systems
Fusibles basse tension –
Partie 7: Exigences supplémentaires concernant les éléments de remplacement

utilisés pour la protection des batteries et des systèmes de batterie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-1061-9

– 2 – IEC 60269-7:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 General . 6
2 Terms and definitions . 6
3 Conditions for operation in service . 8
5 Characteristics of fuses . 9
6 Markings. 10
7 Standard conditions for construction . 11
8 Tests . 11
Annex AA (informative) Examples of standardized fuse-links for the protection of
batteries and battery systems . 16
Annex BB (informative) Guidance for the selection of a fuse for the protection of
battery systems . 17
Bibliography . 18

Table 101 – Conventional times and currents for "gBat" fuse-links . 10
Table 102 – Survey of complete tests on fuse-links and number of fuse-links to be
tested . 12
Table 103 – Survey of tests on fuse-links of the smallest rated current of a
homogeneous series . 12
Table 104 – Values for breaking-capacity tests on "gBat" fuse-links . 14
Table 105 – Values for breaking-capacity tests on "aBat" fuse-link . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW VOLTAGE FUSES –
Part 7: Supplementary Requirements for fuse-links
for the protection of batteries and battery systems

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
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6) All users should ensure that they have the latest edition of this publication.
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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 60269-7 has been prepared by subcommittee 32B: Low-voltage fuses, of IEC technical
committee 32: Fuses. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
32B/700/CDV 32B/709/RVC
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 part is to be used in conjunction with IEC 60269-1, Low-voltage fuses – Part 1: General
requirements.
– 4 – IEC 60269-7:2021 © IEC 2021
This Part 7 supplements or modifies the corresponding clauses or subclauses of Part 1. Where
no change is necessary, this Part 7 indicates that the relevant clause or subclause of Part 1
applies.
Tables and figures which are additional to those in Part 1 are numbered starting from 101.
Additional annexes are lettered AA, BB, etc.
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.
A list of all parts of the IEC 60269 series, under the general title: Low-voltage fuses, can be
found on the IEC website.
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.
INTRODUCTION
This document specifically supports the UN goals:
No. 7: Affordable and clean energy
No. 9: Industry, innovation and infrastructure
No. 11: Sustainable cities and communities
No. 12: Responsible consumption and communities

– 6 – IEC 60269-7:2021 © IEC 2021
LOW VOLTAGE FUSES –
Part 7: Supplementary Requirements for fuse-links
for the protection of batteries and battery systems

1 General
Fuse-links for the protection of battery energy systems shall comply with aIl requirements of
IEC 60269-1, if not otherwise indicated hereinafter, and shall also comply with the
supplementary requirements laid down below.
1.1 Scope and object
These supplementary requirements apply to fuse-links for the protection of batteries and battery
systems, including, but not limited to terminology, for electricity storage in equipment for circuits
of nominal voltages up to 1 500 V DC.
Their rated voltage can be higher than 1 500 V DC.
The object of these supplementary requirements is to establish the characteristics of battery
fuse-links in such a way that they can be replaced by other fuse-links having the same
characteristics, provided that their dimensions are identical.
1.2 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 60269-1, Low-voltage fuses - Part 1: General requirements
IECEE OD-5014, IEC System of Conformity Assessment Schemes for Electrotechnical
Equipment and Components (IECEE System), Committee of Testing Laboratories
(CTL),Instrument Accuracy Limits
ISO/IEC 17025, General requirements for the competence of testing and calibration
laboratories
2 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60269-1 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

2.1 General terms
2.1.101
battery
one or more cells fitted with devices necessary for use, for example case, terminals, markings
and protective devices etc., as necessary for use
[SOURCE: IEC 60050-482:2004, 482-01-04, modified (replacement of "marking and protective
devices” by “markings and protective devices etc., as necessary for use”)]
2.1.102
cell
basic functional unit, consisting of an assembly of electrodes, electrolyte, container, terminals
and usually separators, that is a source of electric energy obtained by direct conversion of
chemical energy
[SOURCE: IEC 60050-482:2004, 482-01-01, modified (removal of NOTE)]
2.1.103
battery module
group of cells connected together, either in a series and/or parallel configuration with or without
protective devices (e.g. fuse or PTC: Positive Temperature Coefficient) and monitoring circuitry
2.1.104
battery system
battery system which incorporates one or more cells, modules or battery packs including
associated devices
Note 1 to entry: It has battery management unit to cut off in case of overcharging, over current, and overheating. It
may have cooling or heating units.
2.1.105
rated energy
quantity of energy, declared by the manufacturer, which under the specified conditions can be
discharged from fully charged flow battery energy storage system, to fully discharge
Note 1 to entry: The rated energy is expressed in watt hour (Wh).
2.1.106
rated output power
electrical power, declared by the manufacturer, which under the specified operating conditions
is the maximum output power designed to be achieved
Note 1 to entry: The rated output power is normally expressed in watt (W).
2.1.107
short-circuit current
maximum current which can be delivered by a cell or battery into an external circuit with zero
electric resistance, or an external circuit which depresses the cell or battery voltage to
approximately zero volts
[SOURCE: IEC 60050-482:2004, 482-03-26, modified (replacement of "should" by "can" and
"volt" by "volts", removal of NOTE)]
2.1.108
open circuit voltage OCV
off-load voltage U
OC
voltage across the terminals of a cell or battery when no external current is flowing

– 8 – IEC 60269-7:2021 © IEC 2021
[SOURCE; IEC 60050-482:2004, 482-03-32, modified (original definition reads "voltage of a cell
or battery when the discharge current is zero")]
2.1.109
overcurrent protective device
device provided to interrupt an electrical circuit in case the conductor current in the electrical
circuit exceeds a predetermined value for a specified duration
[SOURCE: IEC 60050-826:2004, 826-14-14]
2.1.110
rated capacity
capacity value of a cell or battery determined under specified conditions and declared by the
manufacturer
[SOURCE: IEC 60050-482:2004, 482-03-15, modified (addition of "cell or")]
3 Conditions for operation in service
3.4 Voltage
The DC system voltage has a maximum value not exceeding 100% of the rated voltage of the
fuse.
3.4.1 Rated voltage
The rated DC voltage of a fuse-link shall exceed the maximum value of the open circuit voltage
of the Battery (OCV, UOC, off-load voltage) or of the network. See Annex BB.
3.5 Current
3.5.1 Rated Current
Rated currents are given in 5.3. These values depend upon the utilization categories and rated
voltages. For specific systems and sizes, see Annex AA.
3.6 Frequency, power factor and time constant
3.6.1 Frequency
Not applicable
3.6.2 Power factor
Not applicable
3.6.3 Time constant
The time constants expected in practice are considered to correspond to those in Table 105
and Table 104.
3.10 Temperature inside an enclosure
Since the rated values of the fuse-links are based on specified conditions they do not always
correspond to those prevailing at the point of installation, including the local air conditions, the
user may have to consult the manufacturer to define allowable continuous current under these
specific conditions.
5 Characteristics of fuses
5.1 Summary of characteristics
5.1.2 Fuse-links
a) Rated voltage (see 5.2)
b) Rated current (see 5.3 of IEC 60269-1)
c) Rated power dissipation (see 5.5)
d) Time-current characteristics (see 5.6)
e) Breaking range and utilization category (see 5.7.1)
f) Rated breaking capacity (see 5.7.2)
g) Dimensions or size (if applicable)
5.2 Rated voltage
Table 22 of IEC 60269-1 applies. If it is necessary to choose lower values or intermediate values
or higher values, these values should be selected from the series R10 of ISO 3, and in
exceptional cases, from R20 or R40 of ISO 3.
5.3 Rated current
Subclause 5.3.1 of IEC 60269-1 applies with the addition of the following rated currents: 1 400
– 1 600 – 1 800 – 2 000 – 2 250 – 2 800 – 3 150 – 3 600 – 4 000 – 4 500 – 5 000.
5.5 Rated power dissipation of the fuse-link
In addition to the requirements of IEC 60269-1, the manufacturer shall indicate the power
dissipation as a function of current for the range contained between 50 % to 100 % of the rated
current, or publish the load profile.
Derating-curve for increased ambient temperature has to be given in the manufacturer’s
literature.
5.6 Limits of time-current characteristics
5.6.1 Time-current characteristics, time-current zones
The manufacturer shall provide mean time-current characteristics.
The time/current curve should be plotted for DC with a time constant defined by the
manufacturer within the limits of Table 104 and Table 105.
Time current zone shall be available in the manufacturer’s literature for times greater than
0,001 s for aBat fuses and greater than 0,01s for gBat fuses.
5.6.2 Conventional times and currents
5.6.2.2 Conventional times and currents for "gBat"- fuse-links
The conventional times and currents are given in Table 101.
5.6.2.3 Conventional times and currents for "aBat" – fuse-links
Minimum Breaking Current for "aBat": is given in Table 105. Conventional times are given in
Table 101.
– 10 – IEC 60269-7:2021 © IEC 2021
Table 101 – Conventional times and currents for "gBat" fuse-links
Rated current Conventional time Conventional current
A h Type "gBat"
I I
nf f
I ≤ 63
n
63 < I ≤ 160
n
1,13 I 1,60 I
n n
160 < I ≤ 400
n
I > 400
n
5.6.3 Gates
Due to different battery technologies, gates are to be agreed between the manufacturer and the
user.
5.7 Breaking range and breaking capacity
IEC 60269-1 applies with the following supplementary requirement.
5.7.1 Breaking range and utilization category
Additionally to Part 1:
– "gBat" indicates fuse-links with a full-range DC breaking capacity for the protection of
batteries and battery systems
– "aBat" indicates fuse-links with a partial range DC breaking capacity for the protection of
batteries and battery systems
NOTE "Bat" (for battery) indicates fuse-links with d.c. breaking capacity for battery energy systems. These letters
define with accuracy the time-current characteristics, conventional times and currents, gates.
5.7.2 Rated breaking capacity
Minimum value of rated breaking capacity required by this part is 30 kA. Higher breaking
capacities are permissible.
6 Markings
IEC 60269-1 applies with the following supplementary requirements.
6.2 Markings on fuse-links
Subclause 6.2 of IEC 60269-1 applies with the following addition:
– utilization category "gBat" or "aBat"
– rated breaking capacity
– a combination of symbols of IEC 60417 of a fuse (5016) and a battery (5001A) as shown
below
7 Standard conditions for construction
IEC 60269-1 applies with the following supplementary requirements.
7.3 Temperature rise and power dissipation of the fuse-link
Fuse-links shall be so designed and proportioned as to carry, when tested in accordance with
8.3, the rated current without exceeding
– the temperature rise limit of the hottest upper metal part of the fuse-link indicated by the
manufacturer
– the power dissipation at the rated current indicated by the manufacturer
7.4 Operation
The fuse-link shall be so designed and proportioned as to carry continuously any value of
current up to its rated current.
"aBat" fuse-links shall operate and break the circuit for any current value not exceeding the
rated breaking capacity and not less than a current sufficient to interrupt the fuse-link specified
by the manufacturer.
For "gBat" fuse-links within the conventional time:
– its fuse-link does not operate, when it carries any current not exceeding the conventional
non-fusing current (I )
nf
– it operates when it carries any current equal to, or exceeding, the conventional fusing current
(I ) and equal to or lower than the rated breaking capacity
f
This applies for conditions stated under Subclauses 8.3 and 8.4.
7.5 Breaking capacity
A fuse-link of the utilization category "gBat" shall be capable of breaking, at rated DC voltage,
any circuit having a prospective current between the value as in Test No. 5 in Table 104 and
the rated breaking capacity.
A fuse-link of the utilization category "aBat" shall be capable of breaking, at rated DC voltage,
any circuit having a prospective current between the value of I in Table 105 and the rated
2a
breaking capacity.
8 Tests
IEC 60269-1 applies with the following supplementary requirements.
8.1 General
Measurement uncertainty information of tests is given in ISO/IEC 17025 and in IECEE OD5014.
8.1.4 Arrangement of the fuse and dimensions
The fuse-link shall be mounted open in surroundings free from draughts and, unless otherwise
specified, in a vertical position (see 8.3.1).

– 12 – IEC 60269-7:2021 © IEC 2021
8.1.5 Testing of fuse-links
8.1.5.1 Complete tests
A survey of the complete tests is given in Table 102 and Table 103.
8.1.5.2 Type test exemptions for fuse-links of a homogeneous series
Fuse-links having intermediate values of rated current of a homogeneous series are exempted
from a number of type tests if the fuse-link of the largest rated current has been tested according
to Table 102 and if the fuse-link of the smallest rated current has been tested according to
Table 103.
Table 102 – Survey of complete tests on fuse-links
and number of fuse-links to be tested
Test according to subclause "g"- fuse-link "a"- fuse-link
Number of fuse-links to be tested 1 1 1 3 3 1 1 1 3 3 1

8.1.4 Dimensions X X
8.1.5.1 Resistance X X X X X X X X X X X

8.3.3 Temperature rise and power dissipation X X

8.4.3.1 Conventional non-fusing current (I ) X
nf
Conventional fusing current (I ) X
f
8.4.3.2 Verification of rated current X X

8.4.3.6 Operation of indicating devices and strikers, if any X X X X X X

8.5 No. 1 Breaking capacity and operating characteristics X X

No. 2 Breaking capacity and operating characteristics X X

No. 2a Breaking capacity and operating characteristics X

No. 5 Breaking capacity and operating characteristics X

Table 103 – Survey of tests on fuse-links of the smallest
rated current of a homogeneous series
Test according to subclause "g"- fuse link "a"- fuse link
Number of fuse-links to be tested 1 1 1
8.3.3 Temperature rise and power dissipation X X
8.4.3.1 Conventional non-fusing current (I ) X
nf
8.4.3.1 Conventional fusing current (I ) X
f
8.3 Verification of temperature rise limits and power dissipation
8.3.1 Arrangement of the fuse-link
The fuse-link shall be mounted vertically in the conventional test arrangement.
For special fuse-links that cannot be accommodated in the conventional test arrangement, or
for which this test arrangement is not applicable, special tests shall be performed according to
the manufacturer’s instructions and all pertinent data shall be recorded in the test report.
For fuse links intended to be used in separate fuse-bases or fuse-holders, the test may be
performed in these fuse-bases with conductors according to Table 17 of IEC 60269-1.

8.3.3 Measurement of power dissipation of the fuse-link
In addition to 8.3.3 of IEC 60269-1 the following applies.
The power dissipation test shall be made successively at 50 % and at 100 % of the rated current
on the same fuse-link.
8.3.4.2 Power dissipation of a fuse-link
The test may be made with AC or DC.
8.3.5 Acceptability of test results
Subclause 8.3.5 of IEC 60269-1 applies with the following changes.
The temperature rise and power dissipation of the fuse-link shall not exceed the values specified
by the manufacturer.
8.4 Verification of operation
8.4.1 Arrangement of fuse-link
The arrangement of the fuse-link for the verification of operation shall be as described in 8.1.4
and 8.3.1. of IEC 60269-1.
8.4.3 Test method and acceptability of test results
8.4.3.1 Verification of conventional non-fusing and fusing current
It is permissible to make the following tests at a reduced voltage:
a) the fuse-link is subjected to its conventional non-fusing current (I ) for a time equal to the
nf
conventional time specified in Table 101. It shall not operate during this time;
b) the fuse-link, after having cooled down to ambient temperature, is subjected to the
conventional fusing current (I ). It shall operate within the conventional time as specified in
f
Table 101. This test may be performed with an AC or a DC source.
The fuse-link shall operate without external effects or damage.
8.4.3.2 Verification of rated current
The fuse-Iink is tested under the same test conditions as indicated in 8.3.1.
It is subjected to 100 test cycles, each consisting of an "on" period of 0,1 times the conventional
time as specified in Table 101 at rated current and an "off" period of the same duration. This
test may be performed with an AC or DC source.
After this test, the resistance of the fuse-link at room temperature shall not have changed by
more than 10 %.
The conventional time for "gBat" in Table 101 also applies for this test for "aBat".
8.4.3.6 Operation of indicating devices and strikers, if any
IEC 60269-1 applies with the following changes:
– a current between I and the rated breaking capacity in the case of "gBat" fuse-links
– a current between I and the rated breaking capacity in the case of "aBat" fuse-links
2a
– 14 – IEC 60269-7:2021 © IEC 2021
8.5 Verification of the breaking capacity
8.5.1 Arrangement of the fuse
IEC 60269-1 applies.
8.5.5 Test method
8.5.5.1 In order to verify that the fuse-link satisfies the conditions of 7.5, tests number 1, 2
and 5 or 2a shall be made. The number of fuse-links requested in Table 102 shall be tested
with the values stated in Table 104 or Table 105. Test numbers 1 and 2: If during test number 1,
the requirements of test number 2 are met, then this test need not be repeated as test number 2.
Test numbers 5 or 2a respectively – The value of the test current is specified in Table 105 or
Table 104 respectively.
8.5.5.2 Recovery Voltage
For the tests the recovery voltage shall be maintained at a value of 100%+5%-0% of the rated
voltage at least:
– 30 s after operation of fuse-links not containing organic materials in their body or filler;
– 5 min after operation of the fuse-links in all other cases, switching over to another source
of supply being permitted after 15 s if the switching time (interval without voltage) does not
exceed 0,1 s.
In a lapse of time of at least 6 min and maximum 10 min after the operation, the resistance
between the contacts of the fuse-link shall be measured (see 8.5.8 of IEC 60269-1) and noted.
With the manufacturer’s consent, shorter times are possible if the fuse-link does not contain
organic materials in its body or filler.
8.5.8 Acceptability of test results
IEC 60269-1 applies with the following additions:
– no burning or melting of end caps
– no significant movement of end caps
Table 104 – Values for breaking-capacity tests on "gBat" fuse-links
Tests according to 8.5.5.1
No. 1 No. 2 No. 5
Mean value of recovery 100 %
a) b)
voltage -0 +5 % of the rated voltage
Prospective test current I I I = 2 I
1 2 5 n
Tolerance on current 0 +10 % Not applicable 0 +20 %
b)
1 to 3 ms <= 1ms
Time constant
I current which is used in the designation of the rated breaking capacity (see 5.7).
I current which shall be chosen in such a manner that the test is made under conditions which approximate those
giving maximum arc energy. This condition may be deemed to be satisfied if the current, at the beginning of arcing,
has reached a value between 0,5 and 0,8 times the prospective current.
I test current deemed to verify that the fuse is able to operate satisfactorily in the range of small over-currents.
a)
This tolerance includes ripple.
b)
The upper limit may be exceeded with the manufacturer’s consent.

Table 105 – Values for breaking-capacity tests on "aBat" fuse-link
Tests according to 8.5.5.1
No. 1 No. 2 No. 2a
Mean value of recovery 100 %
a) b)
voltage -0 +5 % of the rated voltage
Prospective test current I I I
1 2 2a
Tolerance on current 0 +10 % Not applicable 0+20 %
b)
1 to 3 ms
Time constant
I current which is used in the designation of the rated breaking capacity (see 5.7).
I current which shall be chosen in such a manner that the test is made under conditions which approximate those
giving maximum arc energy. This condition may be deemed to be satisfied if the current, at the beginning of arcing,
has reached a value between 0,5 and 0,8 times the prospective current.
I is the minimum value of the breaking capacity of the fuse-link in the overcurrent range specified by the
2a
manufacturer or 10 times rated current.
a)
This tolerance includes ripple.
b)
The upper limit may be exceeded with the manufacturer’s consent.

– 16 – IEC 60269-7:2021 © IEC 2021
Annex AA
(informative)
Examples of standardized fuse-links for the protection
of batteries and battery systems
The dimensional systems and shapes are presently under rapid development to meet a number
of different market needs. Therefore there are no specific systems given at the time.
Examples of standardized fuse-links (Dimensions and shapes) for the protection of battery
energy systems can be found in IEC 60269-2, IEC 60269-3, IEC 60269-4 and IEC 60269-6 or
can be agreed between the manufacturer and user.

Annex BB
(informative)
Guidance for the selection of a fuse for the protection of battery systems
BB.1 General
This annex is limited to the use of battery fuse-links in circuits having the characteristics
generally found in electrical energy storage systems of DC installation. It is the object of this
annex to explain the selection of the fuse-links.
BB.2 Voltage characteristics
BB.2.1 Rated voltage
The rated voltage of the fuse-link selected shall be higher than the maximum voltage of the
battery system.
In case of polarity inversion protection one fuse link must be installed for each battery polarity.
Each single fuse must be able to interrupt the short circuit current under maximum voltage of
the system.
BB.3 Current carrying capability
BB.3.1 Rated current
The rated current of the fuse-link selected shall take into account the operation current profile
of the application. Ambient temperature may require higher current ratings of the fuse-link. In
such case the manufacturer should be consulted.
BB.4 Breaking capacity
The maximum short circuit current of the system shall be lower than the rated breaking capacity
of the fuse-link.
In some practical applications, time-constant values may be found which are shorter than those
indicated in the tests and which may result in a more favourable fuse performance.

– 18 – IEC 60269-7:2021 © IEC 2021
Bibliography
IEC 60050-151, International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and
magnetic devices
IEC 60050-521, International Electrotechnical Vocabulary (IEV) - Part 521: Semiconductor
devices and integrated circuits
IEC 60086-4, Primary batteries - Part 4: Safety of lithium batteries
IEC 60364-4-41, Low-voltage electrical installations - Part 4-41: Protection for safety -
Protection against electric shock
IEC 60364-4-43, Low-voltage electrical installations - Part 4-43: Protection for safety -
Protection against overcurrent
IEC 62485-5, Safety requirements for secondary batteries and battery installations - Part 5:
Safe operation of stationary lithium ion batteries
IEC 62485-6, Safety requirements for secondary batteries and battery installations - Part 6:
Safe operation of lithium-ion batteries in traction applications
IEC 62620, Secondary cells and batteries containing alkaline or other non-acid electrolytes -
Secondary lithium cells and batteries for use in industrial applications
IEC TR 62660-4, Secondary lithium-ion cells for the propulsion of electric road vehicles - Part
4: Candidate alternative test methods for the internal short circuit test of IEC 62660-3
IEC 62932-1, Flow battery energy systems for stationary applications - Part 1: Terminology and
general aspects
ISO 3, Preferred numbers – Series of preferred numbers

___________
– 20 – IEC 60269-7:2021 © IEC 2021
SOMMAIRE
AVANT-PROPOS . 21
INTRODUCTION . 23
1 Généralités . 24
2 Termes et définitions . 24
3 Conditions de fonctionnement en service . 26
5 Caractéristiques des fusibles . 27
6 Marquages . 29
7 Conditions normales d'établissement . 29
8 Essais . 30
Annexe AA (informative) Exemples d'éléments de remplacement normalisés pour la
protection des batteries et des systèmes de batterie . 35
Annexe BB (informative) Recommandations pour le choix d'un fusible pour la
protection des systèmes de batterie . 36
Bibliographie . 37

Tableau 101 – Courants et temps conventionnels pour les éléments de remplacement
"gBat" . 28
Tableau 102 – Liste des essais complets des éléments de remplacement et nombre
d'éléments de remplacement à soumettre à l’essai . 30
Tableau 103 – Liste des essais des éléments de remplacement de courant assigné le
plus faible dans une série homogène . 31
Tableau 104 – Valeurs pour les essais de vérification du pouvoir de coupure des
éléments de remplacement "gBat" . 33
Tableau 105 – Valeurs pour les essais de vérification du pouvoir de coupure des
éléments de remplacement "aBat" . 34

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
FUSIBLES BASSE TENSION –
Partie 7: Exigences supplémentaires concernant
les éléments de remplacement utilisés pour la protection
des batteries et des systèmes de batterie

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