SIST EN 60269-4:2010/oprA3:2022
(Amendment)Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devices
Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devices
These supplementary requirements apply to fuse-links for application in equipment containing semiconductor devices for circuits of nominal voltages up to 1 000 V AC. or 1 500 V DC. and also, in so far as they are applicable, for circuits of higher nominal voltages.
NOTE 1 Such fuse-Iinks are commonly referred to as "semiconductor fuse-links".
NOTE 2 In most cases, a part of the associated equipment serves the purpose of a fuse-base. Owing to the great variety of equipment, no general rules can be given; the suitability of the associated equipment to serve as a fuse- base should be subject to agreement between the manufacturer and the user. However, if separate fuse-bases or fuse-holders are used, they should comply with the appropriate requirements of IEC 60269-1.
NOTE 3 IEC 60269-6 (Low-voltage fuses – Part 6: Supplementary requirements for fuse-links for the protection of solar photovoltaic energy systems) is dedicated to the protection of solar photovoltaic energy systems.
NOTE 4 These fuse-links are intended for use on systems employing the standardized voltages and tolerances of IEC 60038. Tests carried out on fuse-links in accordance with previous editions of this standard shall remain valid until such time as complimentary equipment has evolved to the standardized voltages and tolerances of IEC 60038.
The object of these supplementary requirements is to establish the characteristics of semiconductor 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. For this purpose, this standard refers in particular to
a) the following characteristics of fuses:
1) their rated values;
2) their temperature rises in normal service;
3) their power dissipation;
4) their time-current characteristics;
5) their breaking capacity;
6) their cut-off current characteristics and their I2t characteristics;
7) their arc voltage characteristics;
b) type tests for verification of the characteristics of fuses;
c) the markings on fuses;
d) availability and presentation of technical data (see Annex BB).
Niederspannungssicherungen - Teil 4: Zusätzliche Anforderungen an Sicherungseinsätze zum Schutz von Halbleiter-Bauelementen
Fusibles basse tension - Partie 4: Exigences supplémentaires concernant les éléments de remplacement utilisés pour la protection des dispositifs à semiconducteurs
Nizkonapetostne varovalke - 4. del: Dodatne zahteve za taljive vložke za zaščito polprevodniških naprav - Dopolnilo A3
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60269-4:2010/oprA3:2022
01-junij-2022
Nizkonapetostne varovalke - 4. del: Dodatne zahteve za taljive vložke za zaščito
polprevodniških naprav - Dopolnilo A3
Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection
of semiconductor devices
Niederspannungssicherungen - Teil 4: Zusätzliche Anforderungen an
Sicherungseinsätze zum Schutz von Halbleiter-Bauelementen
Fusibles basse tension - Partie 4: Exigences supplémentaires concernant les éléments
de remplacement utilisés pour la protection des dispositifs à semiconducteurs
Ta slovenski standard je istoveten z: EN 60269-4:2009/prA3:2022
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
SIST EN 60269-4:2010/oprA3:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60269-4:2010/oprA3:2022
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SIST EN 60269-4:2010/oprA3:2022
32B/716/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60269-4/AMD3 ED5
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-03-18 2022-06-10
SUPERSEDES DOCUMENTS:
32B/710/CD, 32B/713/CC
IEC SC 32B : LOW-VOLTAGE FUSES
SECRETARIAT: SECRETARY:
Germany Mr Michael Altenhuber
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 22
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of CENELEC,
is drawn to the fact that this Committee Draft for Vote (CDV) is
submitted for parallel voting.
The CENELEC members are invited to vote through the CENELEC
online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
TITLE:
Amendment 3 - Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of
semiconductor devices
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
Copyright © 2022 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic
file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or
"mirror" the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC.
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SIST EN 60269-4:2010/oprA3:2022
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1
2
3
4 CONTENTS
5 FOREWORD . 4
6 1 General . 6
7 1.1 Scope and object . 6
8 1.2 Normative references . 7
9 2 Terms and definitions . 7
10 3 Conditions for operation in service . 8
11 4 Classification . 9
12 5 Characteristics of fuses . 10
13 6 Markings . 14
14 7 Standard conditions for construction . 15
15 8 Tests . 16
16 Annex AA (informative) Guidance for the coordination of fuse-links with semiconductor
17 devices. 31
18 Annex BB (normative) Survey on information to be supplied by the manufacturer in his
19 literature (catalogue) for a fuse designed for the protection of semiconductor devices . 37
20 Annex CC (normative) Examples of standardized fuse-links for the protection of
21 semiconductor devices . 38
22 Bibliography . 55
23
24 Figure 101 – Conventional overload curve (example) (X and Y are points of verified
25 overload capability) . 27
26 Figure 102 – Example of a conventional test arrangement for bolted fuse-links . 28
27 Figure 103 – Example of a conventional test arrangement for blade contact fuse-links . 30
28 Figure CC.1 – Single body fuse-links . 39
29 Figure CC.2 – Double body fuse-links . 40
30 Figure CC.3 – Twin body fuse-links . 41
31 Figure CC.4 – Striker fuse-links . 41
32 Table CC.1 – Conventional time and current for "gR" and "gS" fuse-links . 42
33 Figure CC.5 – Fuse-links with bolted connections, type B, body sizes 000 and 00 . 43
34 Figure CC.6 – Fuse-links with bolted connections, type B, body sizes 0, 1, 2 and 3. 44
35 Figure CC.7 – Bolted fuse-links, type C . 46
36 Figure CC.8 – Flush end fuse-links, type A . 48
37 Figure CC.9 – Flush end fuse-links, type B . 50
38 Figure CC.10 – Fuse-links with cylindrical contact caps, type A . 51
39 Figure CC.11 – Fuse-links with cylindrical contact caps, type B . 53
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40 Figure CC.12 – Fuse-links with cylindrical contact caps with striker, type B (additional
41 dimensions for all sizes except 10 × 38) . 54
42
43 Table 101 – Conventional times and currents for “gR” and “gS” fuse-links . 11
44 Table 102 – List of complete tests . 17
45 Table 103 – Survey of tests on fuse-links of the smallest rated current of a
46 homogeneous series . 17
47 Table 104 – Values for breaking-capacity tests on AC. fuses . 23
48 Table 105 – Values for breaking-capacity tests on DC. fuses . 24
49 Table 106 – Values for breaking-capacity tests on VSI fuse-links . 26
50 Table 107 – Cross-sectional area of copper conductors for high current ratings tests . 18
51 Table CC.2 – Conventional time and current for "gR" and "gS" fuse-links . 47
52 Table CC.3 – Typical rated voltages and preferred maximum rated currents . 52
53 Table CC.4 – Conventional time and current for "gR" and "gS" fuse-links . 52
54
55
56
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57 INTERNATIONAL ELECTROTECHNICAL COMMISSION
58
59
LOW-VOLTAGE FUSES –
60
61
62 Part 4: Supplementary requirements for fuse-links
63 for the protection of semiconductor devices
64
65
66 FOREWORD
67
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
68 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
69
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
70
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly
71 Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is
72 entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate
73 in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also
74
participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO)
75
in accordance with conditions determined by agreement between the two organizations.
76
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus
77 of opinion on the relevant subjects since each technical committee has representation from all interested IEC National
78 Committees.
79
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees
80
in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate,
81 IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.
82
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently
83
to the maximum extent possible in their national and regional publications. Any divergence between any IEC
84
Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
85
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment
86
services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out
87
by independent certification bodies.
88
6) All users should ensure that they have the latest edition of this publication.
89
90
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
91
of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of
92
the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
93
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable
94
for the correct application of this publication.
95
96 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.
97
98
99
100
DISCLAIMER
This Consolidated version is not an official IEC Standard and has been prepared for user
convenience. Only the current versions of the standard and its amendment(s) are to
be considered the official documents.
101 This Consolidated version of IEC 60269-4 bears the edition number 5.2. It consists of
102 the fifth edition (2009-05) [documents 32B/535/FDIS and 32B/541/RVD], its amendment 1
103 (2012-05) [documents 32B/579/CDV and 32B/586A/RVC] and its amendment 2 (2016-08)
104 [documents 32B/651/FDIS and 32B/663/RVD]. The technical content is identical to the
105 base edition and its amendments.
106 This Final version does not show where the technical content is modified by
107 amendments 1 and 2. A separate Redline version with all changes highlighted is
108 available in this publication.
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109 International Standard IEC 60269-4 has been prepared by subcommittee 32B: Low-voltage
110 fuses, of IEC technical committee 32: Fuses.
111 This fifth edition constitutes a technical revision. The significant technical changes to the
112 fourth edition are:
113 • the introduction of voltage source inverter fuse-links, including test requirements;
114 • coverage of the tests on operating characteristics for AC. by the breaking capacity tests;
115 • the updating of examples of standardised fuse-links for the protection of semiconductor
116 devices.
117 This part is to be used in conjunction with IEC 60269-1:2006, Low-voltage fuses – Part 1:
118 General requirements.
119 This Part 4 supplements or modifies the corresponding clauses or subclauses of Part 1.
120 Where no change is necessary, this Part 4 indicates that the relevant clause or subclause
121 applies.
122 Tables and figures which are additional to those in Part 1 are numbered starting from 101.
123 Additional annexes are lettered AA, BB, etc.
124 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
125 A list of all parts of the IEC 60269 series, under the general title: Low-voltage fuses, can be
126 found on the IEC website.
127 The committee has decided that the contents of the base publication and its amendments will
128 remain unchanged until the stability date indicated on the IEC web site under
129 "http://webstore.iec.ch" in the data related to the specific publication. At this date, the
130 publication will be
131 • reconfirmed,
132 • withdrawn,
133 • replaced by a revised edition, or
134 • amended.
135
136
137
138
139
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140 LOW-VOLTAGE FUSES –
141
142 Part 4: Supplementary requirements for fuse-links
143 for the protection of semiconductor devices
144
145
146
147 1 General
148 IEC 60269-1 applies with the following supplementary requirements.
149 Fuse-links for the protection of semiconductor devices shall comply with aIl requirements of
150 IEC 60269-1, if not otherwise indicated hereinafter, and shall also comply with the
151 supplementary requirements laid down below.
152 1.1 Scope and object
153 These supplementary requirements apply to fuse-links for application in equipment containing
154 semiconductor devices for circuits of nominal voltages up to 1 000 V AC. or 1 500 V DC. and
155 also, in so far as they are applicable, for circuits of higher nominal voltages.
156 NOTE 1 Such fuse-Iinks are commonly referred to as “semiconductor fuse-links”.
157
NOTE 2 In most cases, a part of the associated equipment serves the purpose of a fuse-base. Owing to the great variety
158
of equipment, no general rules can be given; the suitability of the associated equipment to serve as a fuse- base should
159
be subject to agreement between the manufacturer and the user. However, if separate fuse-bases or fuse-holders are used,
they should comply with the appropriate requirements of IEC 60269-1.
160
161
NOTE 3 IEC 60269-6 (Low-voltage fuses – Part 6: Supplementary requirements for fuse-links for the protection of solar
162 photovoltaic energy systems) is dedicated to the protection of solar photovoltaic energy systems.
163
NOTE 4 These fuse-links are intended for use on systems employing the standardized voltages and tolerances of IEC
164
60038. Tests carried out on fuse-links in accordance with previous editions of this standard shall remain valid until such
165 time as complimentary equipment has evolved to the standardized voltages and tolerances of IEC 60038.
166 The object of these supplementary requirements is to establish the characteristics of semiconductor
167 fuse-links in such a way that they can be replaced by other fuse-links having the same
168 characteristics, provided that their dimensions are identical. For this purpose, this standard refers in
169 particular to
170 a) the following characteristics of fuses:
171 1) their rated values;
172 2) their temperature rises in normal service;
173 3) their power dissipation;
174 4) their time-current characteristics;
175 5) their breaking capacity;
2
176 6) their cut-off current characteristics and their I t characteristics;
177 7) their arc voltage characteristics;
178 b) type tests for verification of the characteristics of fuses;
179 c) the markings on fuses;
180 d) availability and presentation of technical data (see Annex BB).
181
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182 1.2 Normative references
183 The following referenced documents are indispensable for the application of this document.
184 For dated references, only the edition cited applies. For undated references, the latest edition
185 of the referenced document (including any amendments) applies.
186 IEC 60269-1, Low-voltage fuses – Part 1: General requirements
187 IEC 60269-2, Low-voltage fuses – Part 2: Supplementary requirements for fuses for use by
188 authorized persons (fuses mainly for industrial application) – Examples of standardized
189 systems of fuses A to K
190 IEC 60269-3, Low-voltage fuses – Supplementary requirements for fuses for use by unskilled
191 persons (fuses mainly for household and similar applications) – Examples of standardized
192 systems of fuses A to F
193 IEC TR 60269-5, Low-voltage fuses – Part 5: Guidance for the application of low-voltage
194 fuses
195 IEC 60269-6, Low-voltage fuses – Part 6: Supplementary requirements for fuse-links for the
196 protection of solar photovoltaic energy systems
197 IEC 60269-7, Low-voltage fuses – Part 7: Supplementary requirements for fuse-links for the
198 protection of battery systems
199 IEC 60417, Graphical symbols for use on equipment
200 IEC 60664-1:2000, Insulation coordination for equipment within low-voltage systems – Part 1:
201 Principles, requirements and tests
202 ISO 3, Preferred numbers – Series of preferred numbers
203 2 Terms and definitions
204 IEC 60269-1 applies with the following supplementary definitions.
205 2.2 General terms
206 2.2.101
207 semiconductor device
208 device whose essential characteristics are due to the flow of charge carriers within a
209 semiconductor
210 [IEV 521-04-01]
211 2.2.102
212 semiconductor fuse-link
213 current-limiting fuse-link capable of breaking, under specific conditions, any current value
214 within the breaking range (see 7.4)
215 2.2.103
216 signalling device
217 device forming part of the fuse and signalling the fuse operation to a remote place
218 NOTE A signalling device consists of a striker and an auxiliary switch. Electronic devices may also be used.
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219 2.2.104
220 voltage source inverter
221 VSI
222 a voltage stiff inverter
223 [IEV 551-12-11]
224
NOTE Also referred to as a voltage stiff inverter i.e. an inverter that supplies current without any practical change
225 in its output voltage.
226
2.2.105
227
voltage source inverter fuse-link
228
VSI fuse-link
229
current-limiting fuse-link capable of breaking, under specified conditions, the short circuit
230
current supplied by the discharge of a DC.-link capacitor in a voltage source inverter
231
NOTE 1 The abbreviation “VSI fuse-link” is used in this document.
232
NOTE 2 A VSI fuse-link usually operates under a short circuit current supplied by the discharge of a DC.-link capacitor
233
through a very low inductance, in order to allow high frequency in normal operation. This short circuit condition leads to
234
a very high rate of rise of current equivalent to a very low value of time constant, typically 3 ms or less. The supply
235
voltage is DC., even though the applied voltage decreases as the current increases during the short circuit.
236
NOTE 3 In some multiple AC. drive applications, individual output inverters may be remote from the main input rectifier.
237
In these cases, the associated fault circuit impedances may influence the operation of the fuse-links - the associated time
238
constant and the size of the capacitors need to be considered when choosing the appropriate short circuit protection.
239
240
241 3 Conditions for operation in service
242 IEC 60269-1 applies with the following supplementary requirements.
243 3.4 Voltage
244 3.4.1 Rated voltage
245 For AC., the rated voltage of a fuse-link is related to the applied voltage; it is based on the
246 r.m.s. value of a sinusoidal AC. voltage. It is further assumed that the applied voltage retains
247 the same value throughout the operation of the fuse-link. All tests to verify the ratings are
248 based on this assumption.
249
NOTE In many applications, the applied voltage will be sufficiently close to the sinusoidal form for the significant part
250 of the operating time, but there are many cases where this condition is not satisfied.
251 The performance of a fuse-link subjected to a non-sinusoidal applied voltage can be evaluated
252 by comparing, for the first approximation, the arithmetic mean values of the non- sinusoidal and
253 sinusoidal applied voltages.
254 For DC. and VSI fuse-links, the rated voltage of a fuse-link is related to the applied voltage. It
255 is based on the mean value. When DC. is obtained by rectifying AC., the ripple is assumed
256 not to cause a variation of more than 5 % above or 9 % below the mean value.
257 3.4.2 Applied voltage in service
258 Under service conditions, the applied voltage is that voltage which, in the fault circuit, causes
259 the current to increase to such proportions that the fuse-link will operate.
260 For AC., consequently, the value of the applied voltage in a single-phase AC. circuit is usually
261 identical to the power-frequency recovery voltage. For all cases other than the sinusoidal AC.
262 voltage, it is necessary to know the applied voltage as a function of time.
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263 For a unidirectional voltage and for VSI fuse-links, the important values are:
264 – the average value over the entire period of the operation of the fuse-link;
265 – the instantaneous value near the end of the arcing period.
266 3.5 Current
267 The rated current of a semiconductor fuse-link is based on the r.m.s. value of a sinusoidal AC.
268 current at rated frequency.
269 For DC., the r.m.s. value of current is assumed not to exceed the r.m.s. value based on a
270 sinusoidal AC. current at rated frequency.
271
NOTE The thermal response time of the fuse-element may be so short that it cannot be assumed that operation under
272
conditions which deviate much from sinusoidal current can be estimated on the basis of the r.m.s. current alone. This
273
is so, in particular at lower frequency values and when the current presents salient peaks separated by appreciable intervals
274
of insignificant current; for example, in the case of frequency converters and traction applications.
275
276 3.6 Frequency, power factor and time constant
277 3.6.1 Frequency
278 The rated frequency refers to the frequency of the sinusoidal current and voltage that form the
279 basis of the type tests.
280
NOTE In particular, where service frequency deviates significantly from rated frequency the manufacturer should
281 be consulted.
282 3.6.3 Time constant (τ)
283 For DC., the time constants expected in practice are considered to correspond to those in
284 Table 105.
285
NOTE 1 Some service conditions may be found which exceed the specified performance shown in the table as regards
286
time constant. In such a case, a design of fuse-link which has been tested and marked accordingly should be used
287
or the suitability of such a fuse-link be subject to agreement between manufacturer and user. In some service conditions,
288 the time constant is significantly lower than the values stated in the table. In such a case, the applied voltage can be
289 higher than the rated voltage defined according to Table 105. The manufacturer should be consulted for validation.
290 For VSI fuse-links, equivalent time constants expected in practice are considered to correspond
291 to those in Table 106.
292
NOTE 2 The high rate of rise of short circuit current is due to the low inductance, which is considered to be
293 equivalent to a low time constant.
294 NOTE 3 Instead of time constant di/dt can be used in case of short circuit condition
295 di/dt = E/L.
296 E= voltage value of the DC power source,
297
L = total inductance of the capacitor discharge circuit.
298
3.10 Temperature inside an enclosure
299 Since the rated values of the fuse-links are based on specified conditions that do not always
300 correspond to those prevailing at the point of installation, including the local air conditions,
301 the user may have to consult the manufacturer concerning the allowable current-carrying capacity
under specific conditions.
302 4 Classification
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303 IEC 60269-1 applies.
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304 5 Characteristics of fuses
305 IEC 60269-1 applies with the following supplementary requirements.
306 5.1 Summary of characteristics
307 5.1.2 Fuse-links
308 a) Rated voltage (see 5.2)
309 b) Rated current (see 5.3 of IEC 60269-1)
310 c) Kind of current and frequency (see 5.4 of IEC 60269-1)
311 d) Rated power dissipation (see 5.5 of IEC 60269-1)
312 e) Time-current characteristics (see 5.6)
313 f) Breaking range (see 5.7.1 of IEC 60269-1)
314 g) Rated breaking capacity (see 5.7.2 of IEC 60269-1)
315 h) Cut-off current characteristics (see 5.8.1)
2
316 i) I t characteristics (see 5.8.2)
317 j) Dimensions or size (if applicable)
318 k) Arc voltage characteristics (see 5.9)
319 5.2 Rated voltage
320 For rated AC. voltages up to 690 V and DC. voltages up to 750 V, IEC 60269-1 applies; for
321 higher voltages, the values shall be selected from the R 5 series or, where not possible, from
322 the R 10 series of ISO 3.
323 A fuse-link shall have an AC. voltage rating or a DC. voltage rating or a VSI voltage rating. It
324 may have one or more of these voltage ratings.
325 5.4 Rated frequency
326 The rated frequency is that frequency to which the performance data are related.
327 5.5 Rated power dissipation of the fuse-link
328 In addition to the requirements of IEC 60269-1, the manufacturer shall indicate the power
329 dissipation as a function of current for the range 50 % to 100 % of the rated current or for
330 50 %, 63 %, 80 % and 100 % of the rated current.
331
NOTE In cases where the resistance of the fuse-link is of interest, this resistance should be determined from the
332 functional relation between the power dissipation and the associated value of current.
333 5.6 Limits of time-current characteristics
334 5.6.1 Time-current characteristics, time-current zones
335 5.6.1.1 General requirements
336 T
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