Miniature fuses - Part 7: Miniature fuse-links for special applications

IEC 60127-7:2015(E) covers requirements for miniature fuse-links for special applications. This part of IEC 60127 is applicable to fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA. It does not apply to fuses completely covered by the subsequent parts of IEC 60269-1. It does not apply to miniature fuse-links for appliances intended to be used under special conditions, such as in corrosive or explosive atmospheres. This part of IEC 60127 applies in addition to the requirements of IEC 60127-1. Miniature fuse-links for special applications are not intended to be replaced by the end-user of an electrical/electronic appliance. The object of this part of IEC 60127 is to establish uniform test methods for miniature fuse-links for special applications, so as to allow verification of the values (for example melting time and breaking capacity values) specified by the manufacturer. This second edition cancels and replaces the first edition published in 2013. This edition includes the following significant technical changes with respect to the previous edition: - defining a test board for surface mount fuse-links, Figure 2; - defining test schedules for homogenous series. This publication is to be read in conjunction with IEC 60127-1:2006. Keywords: fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA.

Geräteschutzsicherungen - Teil 7: G-Sicherungseinsätze für besondere Anwendungen

Coupe-circuit miniatures - Partie 7: Eléments de remplacement miniatures pour applications spéciales

IEC 60127-7:2015 couvre des exigences pour des éléments de remplacement miniatures pour applications spéciales. La présente partie de l'IEC 60127 est applicable aux éléments de remplacement de tension assignée ne dépassant pas 1 000 V, de courant assigné ne dépassant pas 20 A et de pouvoir de coupure assigné ne dépassant pas 50 kA. Elle ne s'applique pas aux coupe-circuit complètement couverts par les autres parties de l'IEC 60269-1. Elle n'est pas applicable aux éléments de remplacement miniatures placés dans des appareils destinés à être employés dans des conditions particulières, comme dans des atmosphères corrosives ou explosives. La présente partie de l'IEC 60127 s'applique en complément des exigences de l'IEC 60127-1. Les éléments de remplacement miniatures pour applications spéciales ne sont pas destinés à être remplacés par l'utilisateur final d'un appareil électronique ou électrique. L’objet de la présente partie de l'IEC 60127 est d'établir des méthodes d'essai uniformes pour des éléments de remplacement miniatures pour applications spéciales, pour permettre de vérifier les valeurs (par exemple la durée de fusion et le pouvoir de coupure) spécifiées par le fabricant. Cette deuxième édition annule et remplace la première édition, parue en 2013. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - définition d'une carte d'essai pour éléments de remplacement à montage en surface, Figure 2; - définition des programmes d'essai pour les séries homogènes. La présente Norme internationale doit être utilisée conjointement avec l'IEC 60127-1:2006 Mots clés: éléments de remplacement de tension assignée ne dépassant pas 1 000 V, courant assigné ne dépassant pas 20 A et de pouvoir de coupure assigné ne dépassant pas 50 kA.

Miniaturne varovalke - 7. del: Miniaturni taljivi vložki za posebne namene (IEC 60127-7:2015)

Ta del standarda IEC 60127 zajema zahteve za miniaturne taljive vložke za posebno uporabo. Ta del standarda IEC 60127 se uporablja za taljive vložke z nazivno napetostjo, ki ne presega 1000 V, nazivnim tokom, ki ne presega 20 A, in nazivno zmogljivostjo prekinitve, ki ne presega 50 kA. Ne uporablja se za varovalke, ki so v celoti obravnavane v nadaljnjih delih standarda IEC 60269-1. Ne uporablja se za miniaturne taljive vložke za aparate, namenjene za uporabo pod posebnimi pogoji, npr. v korozivni ali eksplozivni atmosferi.
Ta del standarda IEC 60127 se poleg tega uporablja za zahteve iz standarda IEC 60127-1. Za miniaturne taljive vložke za posebno uporabo ni predvideno, da jih zamenja končni uporabnik električnega/elektronskega aparata.
Namen tega dela standarda IEC 60127 je vzpostaviti enotne preskusne metode za miniaturne taljive vložke za posebno uporabo, tako da se omogoči preverjanje vrednosti (na primer čas taljenja in vrednosti zmogljivosti prekinitve), ki jih določi proizvajalec.

General Information

Status
Published
Publication Date
21-Jan-2016
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available
Due Date
11-Oct-2016

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 60127-7:2016
01-julij-2016
1DGRPHãþD
SIST EN 60127-7:2013
Miniaturne varovalke - 7. del: Miniaturni taljivi vložki za posebne namene (IEC
60127-7:2015)

Miniature fuses - Part 7: Miniature fuse-links for special applications (IEC 60127-7:2015)

Geräteschutzsicherungen - Teil 7: G-Sicherungseinsätze für besondere Anwendungen
(IEC 60127-7:2015)
Coupe-circuit miniatures - Partie 7: Eléments de remplacement miniatures pour
applications spéciales (IEC 60127-7:2015)
Ta slovenski standard je istoveten z: EN 60127-7:2016
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
SIST EN 60127-7:2016 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60127-7:2016
---------------------- Page: 2 ----------------------
SIST EN 60127-7:2016
EUROPEAN STANDARD EN 60127-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2016
ICS 29.120.50 Supersedes EN 60127-7:2013
English Version
Miniature fuses - Part 7: Miniature fuse-links for special
applications
(IEC 60127-7:2015)

Coupe-circuit miniatures - Partie 7: Eléments de Geräteschutzsicherungen - Teil 7: G-Sicherungseinsätze für

remplacement miniatures pour applications spéciales besondere Anwendungen
(IEC 60127-7:2015) (IEC 60127-7:2015)

This European Standard was approved by CENELEC on 2015-10-27. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels

© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60127-7:2016 E
---------------------- Page: 3 ----------------------
SIST EN 60127-7:2016
EN 60127-7:2016
European foreword

The text of document 32C/507/CDV, future edition 2 of IEC 60127-7, prepared by SC 32C "Miniature

fuses" of IEC/TC 32 "Fuses" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN 60127-7:2016.
The following dates are fixed:
(dop) 2016-07-27
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-10-27
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60127-7:2013.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.

This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment

Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
Endorsement notice

The text of the International Standard IEC 60127-7:2015 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 6269-1:2006 NOTE Harmonized as EN 6269-1:2006.
IEC 6269-1:2006/AMD1:2009 NOTE Harmonized as EN 6269-1:2006/AMD1:2009.
IEC 6269-1:2006/AMD2:2014 NOTE Harmonized as EN 6269-1:2006/AMD1:2014.
---------------------- Page: 4 ----------------------
SIST EN 60127-7:2016
EN 60127-7:2016
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When 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.cenelec.eu.
Publication Year Title EN/HD Year

IEC 60068-2-21 2006 Environmental testing -- Part 2-21: Tests - EN 60068-2-21 2006

Test U: Robustness of terminations and
integral mounting devices
IEC 60127-1 2006 Miniature fuses -- Part 1: Definitions for EN 60127-1 2006
miniature fuses and general requirements
for miniature fuse-links
+ A1 2011 + A1 2011
+ A2 2015 + A2 2015
IEC 60127-4 2005 Miniature fuses -- Part 4: Universal EN 60127-4 2005
modular fuse-links (UMF) - Through-hole
and surface mount types
+ A1 2008 + A1 2009
+ A2 2012 + A2 2013
IEC 60127-6 2014 Miniature fuses - Part 6: Fuse-holders for EN 60127-6 2014
miniature fuse-links
IEC 60664-1 2007 Insulation coordination for equipment EN 60664-1 2007
within low-voltage systems -- Part 1:
Principles, requirements and tests
IEC 60695-2-12 2010 Fire hazard testing -- Part 2-12: EN 60695-2-12 2010
Glowing/hot-wire based test methods -
Glow-wire flammability index (GWFI) test
method for materials
+ A1 2014 + A1 2014
IEC 60695-2-13 2010 Fire hazard testing -- Part 2-13: EN 60695-2-13 2010
Glowing/hot-wire based test methods -
Glow-wire ignition temperature (GWIT) test
method for materials
+ A1 2014 + A1 2014
IEC 60695-4 2012 Fire hazard testing -- Part 4: Terminology EN 60695-4 2012
concerning fire tests for electrotechnical
products
IEC 61249-2-7 2002 Materials for printed boards and other EN 61249-2-7 2002
interconnecting structures -- Part 2-7:
Reinforced base materials, clad and unclad
- Epoxide woven E-glass laminated sheet
of defined flammability (vertical burning
test), copper-clad
- - + corrigendum Sep. 2005
ISO 3 1973 Preferred numbers; Series of preferred - -
numbers
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SIST EN 60127-7:2016
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SIST EN 60127-7:2016
IEC 60127-7
Edition 2.0 2015-09
INTERNATIONAL
STANDARD
Miniature fuses –
Part 7: Miniature fuse-links for special applications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.50 ISBN 978-2-8322-2913-2

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN 60127-7:2016
– 2 – IEC 60127-7:2015 © IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 7

4 General requirements ...................................................................................................... 8

5 Standard ratings .............................................................................................................. 8

6 Marking ........................................................................................................................... 8

7 General notes on tests .................................................................................................... 9

8 Dimensions and construction ......................................................................................... 14

9 Electrical requirements .................................................................................................. 15

10 Standard sheets ............................................................................................................ 25

Annex A (informative) Guidance on ratings to be specified by the manufacturer or to

be agreed upon with the testing house .................................................................................. 28

Bibliography .......................................................................................................................... 29

Figure 1 – Standard test board for fuse-links with wire terminations ...................................... 11

Figure 2 – Test board for surface mount fuse-links ............................................................... 12

Figure 3 – Test fuse base ..................................................................................................... 13

Figure 4 – Test circuits for breaking capacity tests ................................................................ 16

Table 1 – Power factor and time constant ............................................................................. 17

Table 2 – Testing schedule for individual ampere ratings for a.c. or d.c. breaking

capacity fuse-links ................................................................................................................ 20

Table 3 – Testing schedule for individual ampere ratings for a.c. and d.c. breaking

capacity fuse-links ................................................................................................................ 21

Table 4 – Testing schedule for maximum ampere rating of a homogeneous series (a.c.

or d.c. breaking capacity fuse-links) ...................................................................................... 22

Table 5 – Testing schedule for maximum ampere rating of a homogeneous series (a.c.

and d.c. breaking capacity fuse-links) ................................................................................... 23

Table 6 – Testing schedule for minimum ampere rating of a homogeneous series................ 24

Table 7 – Testing schedule for all intermediate ampere ratings of a homogeneous

series.................................................................................................................................... 24

Table A.1 – Guidance on ratings to be specified by the manufacturer or to be agreed

upon with the testing house .................................................................................................. 28

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SIST EN 60127-7:2016
IEC 60127-7:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MINIATURE FUSES –
Part 7: Miniature fuse-links for special applications
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

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

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 of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

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.

International Standard IEC 60127-7 has been prepared by subcommittee 32C: Miniature fuses,

of IEC technical committee 32: Fuses.
This second edition cancels and replaces the first edition published in 2013.

This edition includes the following significant technical changes with respect to the previous

edition:
a) defining a test board for surface mount fuse-links, Figure 2;
b) defining test schedules for homogenous series.
---------------------- Page: 9 ----------------------
SIST EN 60127-7:2016
– 4 – IEC 60127-7:2015 © IEC 2015
The text of this standard is based on the following documents:
CDV Report on voting
32C/507/CDV 32C/513/RVC

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 60127 series, published under the general title Miniature fuses,

can be found on the IEC website.

This International Standard is to be used in conjunction with IEC 60127-1:2006, Miniature

fuses – Part 1: Definitions for miniature fuses and general requirements for miniature fuse-

links and its Amendment 1 (2011).

The clauses of this standard supplement, modify or replace the corresponding clauses in

IEC 60127-1.

Where there is no corresponding clause or subclause in this standard, the clause or

subclause of IEC 60127-1 applies without modification as far as is reasonable. When this

standard states “addition” or “replacement”, the relevant text in IEC 60127-1 is to be adapted

accordingly.

Subclauses which are additional to those in Part 1 are numbered starting from 101. Additional

annexes are numbered AA, BB, etc.

The committee has decided that the contents of this 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.
A bilingual version of this publication may be issued at a later date.
---------------------- Page: 10 ----------------------
SIST EN 60127-7:2016
IEC 60127-7:2015 © IEC 2015 – 5 –
INTRODUCTION
According to the wish expressed by the users of miniature fuses, all standards,

recommendations and other documents relating to miniature fuses should have the same

publication number in order to facilitate reference to fuses in other specifications, for example,

equipment specifications.

Furthermore, a single publication number and subdivision into parts would facilitate the

establishment of new standards, because clauses containing general requirements need not

be repeated.

The IEC 60127 series, under the general heading Miniature fuses, is thus subdivided as

follows:

IEC 60127-1, Miniature fuses – Part 1: Definitions for miniature fuses and general

requirements for miniature fuse-links
IEC 60127-2, Miniature fuses – Part 2: Cartridge fuse-links
IEC 60127-3, Miniature fuses – Part 3: Sub-miniature fuse-links

IEC 60127-4, Miniature fuses – Part 4: Universal modular fuse-links (UMF) – Through-hole

and surface mount types

IEC 60127-5, Miniature fuses – Part 5: Guidelines for quality assessment of miniature fuse-

links
IEC 60127-6, Miniature fuses – Part 6: Fuse-holders for miniature fuse-links

IEC 60127-7, Miniature fuses – Part 7: Miniature fuse-links for special applications

IEC 60127-8, (Free for further documents)
IEC 60127-9, (Free for further documents)
IEC 60127-10, Miniature fuses – Part 10: User guide for miniature fuses
---------------------- Page: 11 ----------------------
SIST EN 60127-7:2016
– 6 – IEC 60127-7:2015 © IEC 2015
MINIATURE FUSES –
Part 7: Miniature fuse-links for special applications
1 Scope

This part of IEC 60127 covers requirements for miniature fuse-links for special applications.

This part of IEC 60127 is applicable to fuse-links with a rated voltage not exceeding 1 000 V,

a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA.

It does not apply to fuses completely covered by the subsequent parts of IEC 60269-1.

It does not apply to miniature fuse-links for appliances intended to be used under special

conditions, such as in corrosive or explosive atmospheres.
This part of IEC 60127 applies in addition to the requirements of IEC 60127-1.

Miniature fuse-links for special applications are not intended to be replaced by the end-user of

an electrical / electronic appliance.

The object of this part of IEC 60127 is to establish uniform test methods for miniature fuse-

links for special applications, so as to allow verification of the values (for example melting

time and breaking capacity values) specified by the manufacturer.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.

IEC 60068-2-21:2006, Environmental testing – Part 2-21: Tests – Test U: Robustness of

terminations and integral mounting devices

IEC 60127-1:2006, Miniature fuses – Part 1: Definitions for miniature fuses and general

requirements for miniature fuse-links
IEC 60127-1:2006/AMD1:2011
IEC 60127-1:2006/AMD2:2015

IEC 60127-4:2005, Miniature fuses – Part 4: Universal modular fuse-links (UMF) – Through-

hole and surface mount types
IEC 60127-4:2005/AMD1:2008
IEC 60127-4:2005/AMD2:2012

IEC 60127-6:2014, Miniature fuses – Part 6: Fuse-holders for miniature fuse-links

IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:

Principles, requirements and tests
---------------------- Page: 12 ----------------------
SIST EN 60127-7:2016
IEC 60127-7:2015 © IEC 2015 – 7 –

IEC 60695-2-12:2010, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –

Glow-wire flammability index (GWFI) test method for materials
IEC 60695-2-12:2010/AMD1:2014

IEC 60695-2-13:2010, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods –

Glow-wire ignition temperature (GWIT) test method for materials
IEC 60695-2-13:2010/AMD1:2014

IEC 60695-4:2012, Fire hazard testing – Part 4: Terminology concerning fire tests for

electrotechnical products

IEC 61249-2-7:2002, Materials for printed boards and other interconnecting structures – Part

2-7: Reinforced base materials clad and unclad – Epoxide woven E-glass laminated sheet of

defined flammability (vertical burning test), copper-clad
ISO 3:1973, Preferred numbers – Series of preferred numbers
3 Terms and definitions

For the purposes of this document, the terms and definitions given in Clause 3 of IEC 60127-

1:2006, except 3.5, as well as the following apply.
3.1
miniature fuse-link for special applications

enclosed fuse-link which is not covered in IEC 60127-2, IEC 60127-3 or IEC 60127-4 and of

rated breaking capacity not exceeding 50 kA, with a width and height not exceeding 12 mm

and a length not exceeding 50 mm

Note 1 to entry: Special precautions may be necessary to ensure that the fuse-links will be replaced by a fuse-link

with the same technical parameters.

Note 2 to entry: For fuse-links having a metallic cap at each end, any member of terminals or terminations other

than the metallic cap such as wire terminations, pins and bolt-in contacts may not be included in the total length of

50 mm and the width and height of 12 mm.
3.2
t to t
1 8
limit values for time/current characteristic
3.3
test current for testing at elevated temperature of 70 °C
Note 1 to entry: Preferred values are 0,8 I or 1,0 I or 1,1 I .
N N N
3.4
I (A)
test
test current for endurance testing according to method A
Note 1 to entry: Preferred values are 1,0 I or 1,05 I or 1,2 I .
N N N
3.5
I (B)
test
test current for endurance testing according to method B
Note 1 to entry: Preferred values are 0,8 I or 1,0 I .
N N
3.6
I (A)
OVL

test current for measuring the maximum sustained dissipation according to method A

---------------------- Page: 13 ----------------------
SIST EN 60127-7:2016
– 8 – IEC 60127-7:2015 © IEC 2015
Note 1 to entry: Preferred values are 1,25 I or 1,35 I or 1,5 I .
N N N
3.7
I (B)
OVL

test current for measuring the maximum sustained dissipation according to method B

Note 1 to entry: Preferred values are 1,0 I or 1,25 I .
N N
4 General requirements
Clause 4 of IEC 60127-1:2006 applies.
5 Standard ratings
Clause 5 of IEC 60127-1:2006 does not apply.
Replacement:

The following ratings shall be agreed upon between the testing house and the manufacturer:

– rated voltage;
– rated current (see standard sheet 1 for preferred ratings);
– rated breaking capacity (a.c. and/or d.c.);
– time/current characteristic (at least at 2,0 I or 2,1 I and 10 I ).
N N N
The following may be agreed upon on an optional basis:
– test at elevated temperature;
– time/current characteristic (additionally at 2,75 I and 4 I ).
N N
Any additional specified values are given in standard sheet 1.
6 Marking
Clause 6 of IEC 60127-1:2006 applies except as follows.
6.1
Replacement:
d) Not applicable.

NOTE A symbol denoting the time/current characteristic cannot be stated, because this part of IEC 60127 does

not specify any values for this parameter.
Addition:
e) Type designation.
f) Rated breaking capacity in amperes (A) or in kilo amperes (kA).
6.2
Deletion of NOTE 2.
6.3
Addition after first paragraph:
---------------------- Page: 14 ----------------------
SIST EN 60127-7:2016
IEC 60127-7:2015 © IEC 2015 – 9 –

Furthermore the rated breaking capacity in amperes (A) or in kilo amperes (kA) shall be

marked on the package label.
6.4
Addition of heading title and replacement of text:
6.4 Colour coding for miniature fuse-links for special applications

Marking of fuse-links by means of colour bands according to IEC 60127-1:2006, Annex A, is

not permitted. It is, however, possible to use colour markings that clearly differ from this

colour band system. In this case, the manufacturer shall provide the relevant information, for

example colour key.
Additional subclause:

6.101 Where marking is impracticable due to space limitations, the relevant information

should appear on the smallest package and in the manufacturer’s technical literature.

7 General notes on tests
Clause 7 of IEC 60127-1:2006 applies except as follows.
7.2 Type tests
7.2.1
Replacement:

For testing the individual current ratings of fuses with a.c. or d.c. breaking capacity, the

number of fuse-links required is 51, of which 12 are kept as spares. For fuse-links with wire

terminations six extra samples (E1 to E6) have to be taken by random and not sorted

according to voltage drop. If necessary, these samples can be used as additional spares after

performing the tests according to 8.3.
The testing schedule is shown in Table 2.

For testing the individual current ratings of fuses with a.c. and d.c. breaking capacity, the

number of fuse-links required is 63, of which 9 are kept as spares. For fuse-links with wire

terminations six extra samples (E1 to E6) have to be taken by random and not sorted

according to voltage drop. If necessary, these samples can be used as additional spares after

performing the tests according to 8.3.The testing schedule is shown in Table 3.

For testing the maximum ampere rating of a homogenous series with a.c. or d.c. breaking

capacity the number of fuse-links required is 51, of which 22 are kept as spares. For fuse-

links with wire terminations six extra samples (E1 to E6) have to be taken by random and not

sorted according to voltage drop. If necessary, these samples can be used as additional

spares after performing the tests according to 8.3.
The testing schedule is shown in Table 4.

For testing the maximum ampere rating of a homogenous series with a.c. and d.c. breaking

capacity the number of fuse-links required is 66, of which 32 are kept as spares. For fuse-

links with wire terminations six extra samples (E1 to E6) have to be taken by random and not

sorted according to voltage drop. If necessary, these samples can be used as additional

spares after performing the tests according to 8.3.
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SIST EN 60127-7:2016
– 10 – IEC 60127-7:2015 © IEC 2015
The testing schedule is shown in Table 5.

For testing the minimum ampere rating of a homogenous series with a.c. and / or d.c.

breaking capacity the number of fuse-links required is 38, of which 16 are kept as spares.

The testing schedule is shown in Table 6.

For testing all of the intermediate ampere rating of a homogenous series with a.c. and / or d.c.

breaking capacity the number of fuse-links required is 38, of which 16 are kept as spares.

The testing schedule is shown in Table 7.
7.3 Fuse-bases for tests
Addition after first paragraph:

For fuse-links designed for use in a special type of fuse-holder, testing shall be performed in

that fuse-holder.

For tests that require a printed circuit board for mounting and connection of the fuse-links, a

test board according to Figure 1 or Figure 2 shall be used.

The test board according to Figure 1 shall be used for fuse links with wire terminations

intended for insertion in suitably designed holes or sockets.
The test board according to Figure 2 shall be used for surface mount fuse-links.

When two or more fuse-links are tested in series, the fuse-bases shall be located so that

there will be a spacing of not less than 50 mm between any two fuse-links under testing. The

conductor connecting the fuse-bases together, and connecting the fuse-bases to the ammeter

and the source of supply shall be insulated copper wire. The length of each conductor shall be

500 mm and the cross-sectional area of the wire shall be approximately 1 mm for fuse-links

with rated currents up to and including 6,3 A, and 6 mm for rated currents exceeding 6,3 A.

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SIST EN 60127-7:2016
IEC 60127-7:2015 © IEC 2015 – 11 –
Dimensions in millimetres
∅4,2
n × e
100
Figure 1A
∅ D
n × e
Radius =
IEC
Key
O copper layer; thickness 0,035 mm or 0,070 mm
U connection for voltage drop measurement
D diameter of 1 mm for rated currents up to and including 6,3 A;
diameter of 1,5 mm for rated currents exceeding 6,3 A.
e 2,5 mm
n 1, 2, 3, 4
n 1, 2, 3 … (to b
...

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