Amendment 1 - Miniature fuses - Part 3: Sub-miniature fuse-links

Amendement 1 - Coupe-circuit miniatures - Partie 3: Éléments de remplacement subminiatures

General Information

Status
Published
Publication Date
21-Jul-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
22-Jul-2020
Ref Project

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IEC 60127-3
Edition 3.0 2020-07
INTERNATIONAL
STANDARD
AMENDMENT 1
Miniature fuses –
Part 3: Sub-miniature fuse-links
IEC 60127-3:2015-01/AMD1:2020-07(en)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2020 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

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3, rue de Varembé info@iec.ch
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About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

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---------------------- Page: 2 ----------------------
IEC 60127-3
Edition 3.0 2020-07
INTERNATIONAL
STANDARD
AMENDMENT 1
Miniature fuses –
Part 3: Sub-miniature fuse-links
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.50 ISBN 978-2-8322-8652-4

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

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 60127-3:2015/AMD1:2020
© IEC 2020
FOREWORD

This amendment has been prepared by subcommittee 32C: Miniature fuses, of IEC technical

committee 32: Fuses.
The text of this amendment is based on the following documents:
FDIS Report on voting
32C/586/FDIS 32C/589/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.
_____________
Add, at the end of Clause 10, the following new text:
Addition of the following new Annex A:
---------------------- Page: 4 ----------------------
IEC 60127-3:2015/AMD1:2020 – 3 –
© IEC 2020
Annex A
(normative)
Sub-miniature fuse-links according to standard sheet 3 and 4
with optional DC ratings
A.1 General

This annex supplements the requirements of this standard and is to be applied to already tested

and approved sub-miniature fuse-links.

This annex relates to requirements applicable to sub-miniature fuse-links adapted to printed

circuits and used for the protection of electric appliances, electronic equipment and component

parts thereof, normally intended to be used indoors.

The object of this annex is to define additional test methods for sub-miniature fuse-links

according to standard sheet 3 and 4 with optional DC ratings.
A.2 General notes on tests

In addition to the requirements of Clause 7 of IEC 60127-1:2006, the following criteria shall be

observed.
A.2.1 Type tests
Replacement of 7.2.1:
15 addition
...

IEC 60127-3
Edition 3.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Miniature fuses –
Part 3: Sub-miniature fuse-links
Coupe-circuit miniatures –
Partie 3: Éléments de remplacement subminiatures
IEC 60127-3:2015-01/AMD1:2020-07(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2020 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite

ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez

les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch

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details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
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need further assistance, please contact the Customer Service
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---------------------- Page: 2 ----------------------
IEC 60127-3
Edition 3.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Miniature fuses –
Part 3: Sub-miniature fuse-links
Coupe-circuit miniatures –
Partie 3: Éléments de remplacement subminiatures
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-9509-0

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60127-3:2015/AMD1:2020
© IEC 2020
FOREWORD

This amendment has been prepared by subcommittee 32C: Miniature fuses, of IEC technical

committee 32: Fuses.
The text of this amendment is based on the following documents:
FDIS Report on voting
32C/586/FDIS 32C/589/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.
_____________
Add, at the end of Clause 10, the following new text:
Addition of the following new Annex A:
---------------------- Page: 4 ----------------------
IEC 60127-3:2015/AMD1:2020 – 3 –
© IEC 2020
Annex A
(normative)
Sub-miniature fuse-links according to standard sheet 3 and 4
with optional DC ratings
A.1 General

This annex supplements the requirements of this standard and is to be applied to already tested

and approved sub-miniature fuse-links.

This annex relates to requirements applicable to sub-miniature fuse-links adapted to printed

circuits and used for the protection of electric appliances, electronic equipment and component

parts thereof, normally intended to be used indoors.

The object of this annex is to define additional test methods for sub-miniature fuse-links

according to standard sheet 3 and 4 with optional DC ratings.
A.2 General notes on tests

In addition to the requirements of Clause 7 of IEC 60127-1:2006, the following criteria shall be

observed.
A.2.1 Type tests
Replacement of 7.2.1:
15 additional samples chosen at random are required.

The schedule for testing sub-miniature fuse-links with DC ratings shall be according to

Table A.1.
The requirements of 7.2.3 of IEC 60127-1:2006 are not applicable.
No failure is allowed in any of the additional tests specified in this annex.
Table A.1 – Testing schedule
Fuse-link number
Sub-
DC1 DC4 DC7 DC10 DC13
Description
clause
DC2 DC5 DC8 DC11 DC14
DC3 DC6 DC9 DC12 DC15
A.4.1 Rated breaking capacity X
A.4.1 5 times the rated current 5 I X
A.4.1 10 times the rated current 10 I X
A.4.1 50 times the rated current 50 I X
A.4.1 250 times the rated current 250 I X
A.4.1 Insulation resistance X X X X X
NOTE Applicable only when the defined rated breaking capacity is not exceeded.
---------------------- Page: 5 ----------------------
– 4 – IEC 60127-3:2015/AMD1:2020
© IEC 2020
A.2.2 Test bases for tests

Sub-miniature fuse-links shall be tested in a test board as shown in Figure 1. The test board

shall then be mounted on the test base of Figure 2.
A.3 Marking
Clause 6 of IEC 60127-1:2006 applies except as follows.
6.3
Addition after first paragraph:

Furthermore the DC rated breaking capacity in amperes (A) or in kilo amperes (kA) as well as

the DC rated voltage (VDC) shall be marked on the package label.
A.4 Electrical requirements
A.4.1 Breaking capacity
Replacement of 9.3.1:

Fuse-links shall operate satisfactorily without endangering the surroundings when breaking

prospective currents between the conventional non-fusing current and rated breaking capacity.

The recovery voltage shall be between 1,02 and 1,05 times the rated voltage of the fuse-links

(the upper tolerance may be exceeded with the manufacturer's consent) and shall be maintained

for 30 s after the fuse has operated.

Typical test circuits for DC are given in Figure A.1. The cross-sectional area of copper wire

shall be approximately 6 mm .

For tests at lower prospective currents (5 I , 10 I , 50 I , 250 I ), the inductance of the circuit

N N N N

shall remain constant and the current shall be adjusted by changing the resistance only.

In the case of fuse-links in which any component is organic (such as with a moulded body), the

recovery voltage shall be maintained for 5 min after the fuse has operated.

In principle, the DC rated voltage, rated breaking capacity and associated time constant,

respectively, shall be specified by the manufacturer.

Unless otherwise stated by the manufacturer, the time constant of the test circuit shall be

chosen from Table
...

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