HD 60269-2:2007

SLOVENSKI STANDARD
01-februar-2008
1DGRPHãþD
SIST EN 60269-2:1995
SIST EN 60269-2:1995/A1:1999
SIST EN 60269-2:1995/A2:2003
SIST HD 60269-2-1:2006
Nizkonapetostne varovalke - 2. del: Dodatne zahteve za varovalke, ki jih
uporabljajo strokovne osebe (uporaba varovalk zlasti v industriji) - Primeri tipov
standardiziranih varovalk od A do I (IEC 60269-2:2006)
Low-voltage fuses - Part 2: Supplementary requirements for fuses for use by authorized
persons (fuses mainly for industrial application) - Examples of standardized systems of
fuses A to I (IEC 60269-2:2006)
Niederspannungssicherungen -Teil 2: Zusätzliche Anforderungen an Sicherungen zum
Gebrauch durch Elektrofachkräfte bzw. elektrotechnisch unterwiesene Personen
(Sicherungen überwiegend für den industriellen Gebrauch) - Beispiele für genormte
Sicherungssysteme A bis I (IEC 60269-2:2006)
Fusibles basse tension - Partie 2: Exigences supplémentaires pour les fusibles destinés
a etre utilisés par des personnes habilitées (fusibles pour usages essentiellement
industriels) - Exemples de systemes de fusibles normalisés A a I (IEC 60269-2:2006)
Ta slovenski standard je istoveten z: HD 60269-2:2007
ICS:
29.120.50
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT
HD 60269-2
DOCUMENT D'HARMONISATION
May 2007
HARMONISIERUNGSDOKUMENT
ICS 29.120.50 Partially supersedes EN 60269-2:1995 + A1:1998 + A2:2002
and supersedes HD 60269-2-1:2005

English version
Low-voltage fuses -
Part 2: Supplementary requirements for fuses for use
by authorized persons (fuses mainly for industrial application) -
Examples of standardized systems of fuses A to I
(IEC 60269-2:2006, modified)
Fusibles basse tension -  Niederspannungssicherungen -
Partie 2: Exigences supplémentaires Teil 2: Zusätzliche Anforderungen
pour les fusibles destinés à être utilisés an Sicherungen zum Gebrauch durch
par des personnes habilitées (fusibles Elektrofachkräfte bzw. elektronisch
pour usages essentiellement industriels) - unterwiesene Personen (Sicherungen
Exemples de systèmes de fusibles überwiegend für den industriellen
normalisés A à I Gebrauch) -
(CEI 60269-2:2006, modifiée) Beispiele für genormte
Sicherungssysteme A bis I
(IEC 60269-2:2006, modifiziert)

This Harmonization Document was approved by CENELEC on 2007-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this
Harmonization Document at national level.

Up-to-date lists and bibliographical references concerning such national implementations may be obtained on
application to the Central Secretariat or to any CENELEC member.

This Harmonization Document exists in three official versions (English, French, German).

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. HD 60269-2:2007 E
Foreword
The text of document 32B/487/FDIS, future edition 3 of IEC 60269-2, prepared by SC 32B, Low-voltage
fuses, of IEC TC 32, Fuses, was submitted to the IEC-CENELEC parallel vote.
A draft amendment, containing common modifications to document 32B/487/FDIS that are technically
identical to the common modifications in HD 60269-2-1:2005, was prepared by Reporting Secretariat
CLC/SR 32B, Low-voltage fuses, and was submitted to the formal vote.
The combined texts were approved by CENELEC as HD 60269-2 on 2007-03-01.
This Harmonization Document partially supersedes EN 60269-2:1995 + A1:1998 + A2:2002 and also
supersedes HD 60269-2-1:2005.
This document is to be used in conjunction with EN 60269-1:2007.
This Part 2 supplements or modifies the corresponding clauses or subclauses of Part 1.
Where no change is necessary, this Part 2 indicates that the relevant clause or subclause applies.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-03-01
Tables and figures which are additional to those in Part 1 are numbered starting from 101.
Annex ZA has been added by CENELEC.
__________
- 3 - HD 60269-2:2007
Endorsement notice
The text of the International Standard IEC 60269-2:2006 was approved by CENELEC as a Harmonization
Document with agreed common modifications as given below.
COMMON MODIFICATIONS
1 General scope
Replace the note by:
NOTE The following fuse systems are standardized systems in respect to their safety aspects. The National Committees shall
select at least one complete fuse system of this standard for their national standards. The time current characteristics "gD" and "gN"
are only relevant for the fuse system H.

Fuse system A – Fuses with fuse-links with blade contacts (NH fuse system)
6.2 Marking of fuse-links
Replace the first sentence after the table by the following:
Fuse-links with isolated gripping-lugs shall be marked in a place visible at the front with the graphical
symbol of a gripping-lug in a square.

7.2 Insulating properties
Add:
Insulating parts of the fuse-base supporting live parts have to pass the test at PTI 500 M according to
EN 60112 on five specimens.
8.2.6 Resistance to tracking
Replace the paragraph by the following:
The test of the fuse-links and -bases is carried out according to EN 60112 using test solution B.
Five specimens shall be tested and shall pass at PTI 500 M. Ceramic isolators need not to be tested.

8.5.5.1 Verification of the peak withstand current of a fuse-base
Add at the end of the first sentence:
... or if the minimum withdrawal forces according to 8.11 are exceeded.

Bibliography
Add the following notes for the standards indicated:
IEC 60060-2 NOTE Harmonized as EN 60060-2 1994 (not modified).
IEC 60060-3 NOTE Harmonized as EN 60060-3:2006 (not modified).
IEC 60529 NOTE Harmonized as EN 60529:1991 (not modified).
ISO 1207 NOTE Harmonized as EN ISO 1207:1994 (not modified).
__________
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1) 2)
IEC 60060-1 - High-voltage test techniques - HD 588.1 S1 1991
Part 1: General definitions and test
requirements
1) 2)
IEC 60112 - Method for the determination of the proof EN 60112 2003
and the comparative tracking indices of solid
insulating materials
1) 2)
IEC 60269-1 - Low-voltage fuses - EN 60269-1 2007
Part 1: General requirements
1) 2)
IEC 60664-1 - Insulation coordination for equipment within EN 60664-1 2003
low-voltage systems -
Part 1: Principles, requirements and tests

IEC 60999 Series Connecting devices - Electrical copper EN 60999 Series
conductors - Safety requirements for screw-
type and screwless-type clamping units

1) 2)
ISO 6988 - Metallic and other non organic coatings - EN ISO 6988 1994
Sulfur dioxide test with general condensation
of moisture
1)
Undated reference.
2)
Valid edition at date of issue.

INTERNATIONAL IEC
STANDARD 60269-2
Third edition
2006-11
Low-voltage fuses –
Part 2:
Supplementary requirements for fuses
for use by authorized persons
(fuses mainly for industrial application) –
Examples of standardized systems of fuses A to I
” IEC 2006 Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
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60269-2 © IEC:2006 – 3 –
CONTENTS
FOREWORD.25
INTRODUCTION.29
1 General scope.31
2 Normative references.33
Fuse system A – Fuses with fuse-links with blade contacts
(NH fuse system)
1 General .35
1.1 Scope.35
2 Terms and definitions .35
3 Conditions for operation in service.37
4 Classification.37
5 Characteristics of fuses .37
5.2 Rated voltage.37
5.3.1 Rated current of the fuse-link.37
5.3.2 Rated current of the fuse-holder .37
5.5 Rated power dissipation of a fuse-link and rated acceptable power
dissipation of a fuse-holder .37
5.6 Limits of time-current characteristics .39
5.6.1 Time-current characteristics, time-current zones and overload curves .39
5.6.2 Conventional times and currents.39
5.6.3 Gates .39
5.7.2 Rated breaking capacity .39
6 Marking .41
6.1 Markings of fuse-holders .41
6.2 Markings of fuse-links.41
7 Standard conditions for construction.43
7.1 Mechanical design.43
7.1.2 Connections, including terminals .43
7.1.3 Fuse-contacts.43
7.1.5 Construction of fuse-bases .45
7.1.7 Construction of a fuse-link .45
7.2 Insulating properties.45
7.7 I t characteristics .45
7.8 Overcurrent discrimination of "gG" fuse-links.47
7.9 Protection against electric shock .47
8 Tests .49
8.1.4 Arrangement of the fuse and dimensions .49
8.1.6 Testing of fuse-holders .49
8.2.2.1   Points of application of the test voltage.49
8.2.3.2   Value of test voltage .49
8.2.3.3   Test method .51
8.2.4 Acceptability of test results.51
8.2.5 Resistance to tracking .51

60269-2 © IEC:2006 – 5 –
8.3 Verification of temperature rise and power dissipation.51
8.3.1 Arrangement of the fuse .51
8.3.2 Measurement of the temperature rise .53
8.5.8 Acceptability of test results.
...