EN IEC 60282-4:2020

SLOVENSKI STANDARD
01-december-2020
Visokonapetostne varovalke - 4. del: Dodatne zahteve za preskušanje
visokonapetostnih izklopnih varovalk s polimernimi izolatorji (IEC 60282-4:2020)
High-voltage fuses - Part 4: Additional testing requirements for high-voltage expulsion
fuses utilizing polymeric insulators (IEC 60282-4:2020)
Hochspannungssicherungen - Teil 4: Zusätzliche Prüfanforderungen an Hochspannungs-
Ausblassicherungen mit Polymerisolatoren (IEC 60282-4:2020)
Fusibles à haute tension - Partie 4: Exigences d'essai supplémentaires pour les fusibles
à expulsion à haute tension utilisant des isolateurs polymériques (IEC 60282-4:2020)
Ta slovenski standard je istoveten z: EN IEC 60282-4:2020
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60282-4

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2020
ICS 29.120.50
English Version
High-voltage fuses - Part 4: Additional testing requirements for
high-voltage expulsion fuses utilizing polymeric insulators
(IEC 60282-4:2020)
Fusibles à haute tension - Partie 4: Exigences d'essai Hochspannungssicherungen - Teil 4: Zusätzliche
supplémentaires pour les fusibles à expulsion à haute Prüfanforderungen an Hochspannungs-Ausblassicherungen
tension utilisant des isolateurs polymériques mit Polymerisolatoren
(IEC 60282-4:2020) (IEC 60282-4:2020)
This European Standard was approved by CENELEC on 2020-05-21. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60282-4:2020 E

European foreword
The text of document 32A/346/FDIS, future edition 1 of IEC 60282-4, prepared by SC 32A "High-
voltage fuses" of IEC/TC 32 "Fuses" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN IEC 60282-4:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-02-21
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-05-21
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60282-4:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 62217:2012 NOTE Harmonized as EN 62217:2013 (not modified)

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where 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 60060-1 2010 High-voltage test techniques - Part 1: EN 60060-1 2010
General definitions and test requirements
IEC 60282-2 2008 High-voltage fuses - Part 2: Expulsion fuses - -
ISO 4287 - Geometrical Product Specifications (GPS) - EN ISO 4287 -
Surface texture: Profile method - Terms,
definitions and surface texture parameters
ISO 4892-2 - Plastics - Methods of exposure to laboratory EN ISO 4892-2 -
light sources - Part 2: Xenon-arc lamps
ISO 868 - Plastics and ebonite - Determination of EN ISO 868 -
indentation hardness by means of a
durometer (Shore hardness)
IEC 60282-4 ®
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage fuses –
Part 4: Additional testing requirements for high-voltage expulsion fuses utilizing

polymeric insulators
Fusibles à haute tension –
Partie 4: Exigences d'essai supplémentaires pour les fusibles à expulsion à

haute tension utilisant des isolateurs polymériques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-8089-8

– 2 – IEC 60282-4:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Type tests . 8
4.1 General requirements . 8
4.2 Mechanical tests . 8
4.2.1 Mechanical stressing at temperature extremes . 8
4.2.2 Long term deformation/creep testing . 10
4.3 Environmental tests . 11
4.3.1 General . 11
4.3.2 Accelerated weathering test . 11
4.3.3 Tracking and erosion test . 12
4.3.4 Flammability test . 13
4.4 Tests on interfaces and connections of end fittings . 13
4.4.1 General . 13
4.4.2 Water immersion pre-stressing procedure . 14
4.4.3 Verification tests . 14
4.5 Breaking tests with dye penetration. 15
4.5.1 General . 15
4.5.2 Description of tests to be made . 15
4.6 Acceptance criteria . 15
Bibliography . 16

Figure 1 – Test sequence . 9
Figure 2 – Dye penetration test arrangement . 10
Figure 3 – Tracking wheel test arrangement . 13

IEC 60282-4:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE FUSES –
Part 4: Additional testing requirements for high-voltage
expulsion fuses utilizing polymeric insulators

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 60282-4 has been prepared by subcommittee 32A: High-voltage
fuses, of IEC technical committee 32: Fuses.
The text of this International Standard is based on the following documents:
FDIS Report on voting
32A/346/FDIS 32A/348/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 60282-4:2020 © IEC 2020
A list of all parts in the IEC 60282 series, published under the general title High-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 "http://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.
IEC 60282-4:2020 © IEC 2020 – 5 –
INTRODUCTION
High-voltage expulsion fuses are tested according to IEC 60282-2 which recognizes that fuse-
bases may use polymer (non-ceramic) insulators. However, very little additional testing is
specified for fuses using such insulators. In the case of polymer post insulators and
suspension insulators, only artificial pollution tests are required in accordance with IEC 61592
and IEC 61109, respectively. However, for fuses that use insulators not covered by these
International Standards, such as certain fuse-cutouts, the additional testing required is by
agreement between manufacturer and user. Fuses that need such "additional testing" are
expulsion fuses that utilize polymer insulators in which a single mounting bracket is used,
either at the centre of an insulator or connected to two insulators (a "cutout fuse-base"). As
the market for expulsion fuses using polymer insulators has grown, manufacturers have
introduced many tests in addition to artificial pollution tests, covering other aspects of a fuse's
performance. This document formalises such testing and provides standardisation and
consistency. It should be noted that the document focusses on product testing as opposed to
material testing. In addition to drawing on test procedures covered by IEC 62217:2012,
Polymeric HV insulators for indoor and outdoor use – General definitions, test methods and
acceptance criteria, material from IEEE Std C37.41™:2016 (primarily 18.1.2 Long-term
deformation/creep testing) is also used, with the permission of IEEE.

– 6 – IEC 60282-4:2020 © IEC 2020
HIGH-VOLTAGE FUSES –
Part 4: Additional testing requirements for high-voltage
expulsion fuses utilizing polymeric insulators

1 Scope
This part of IEC 60282 applies to expulsion fuses complying with IEC 60282-2 and specifies
additional testing requirements for fuses employing a cutout fuse-base that utilizes polymeric
insulators.
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 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60282-2:2008, High-voltage fuses – Part 2: Expulsion fuses
ISO 4287, Geometrical Product Specifications (GPS) – Surface Texture: Profile method –
Terms, definitions and surface texture parameters
ISO 4892-2, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc
lamps
ISO 868, Plastics and ebonite – Determination of indentation hardness by means of a
durometer (Shore hardness)
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.1
polymeric insulator
insulator whose insulating body consists of at least one organic based material
Note 1 to entry: Polymeric insulators are also known as non-ceramic insulators.
Note 2 to entry: Coupling devices may be attached to the ends of the insulating body.
[SOURCE: IEC 60050-471:2007, 471-01-13]

IEC 60282-4:2020 © IEC 2020 – 7 –
3.2
composite polymeric insulator
polymeric insulator made of at least two polymeric insulating parts, namely a core and a
housing equipped with end fittings
[SOURCE: IEC 60050-471:2007, 471-01-02, modified – the term "polymeric" added and the
note to entry deleted.]
3.3
core (of a composite polymeric insulator)
central insulating part of a composite polymeric insulator which provides the primary
mechanical characteristics of the insulator
[SOURCE: IEC 60050-471:2007, 471-01-03, modified – addition of "composite polymeric";
addition of "primary" and "of the insulator"; note to entry deleted.]
3.4
housing
external insulating part(s) of a composite polymeric insulator that provides the necessary
creepage distance, other dielectric characteristics of the insulator, and protects the core from
the environment
[SOURCE: IEC 60050-471:2007, 471-01-09, modified – "of a composite polymeric insulator"
and "other dielectric characteristics of the insulator" added.]
3.5
insulating body
insulating assembly that contains the insulator and permanent fittings
3.6
insulator trunk
central insulating part of an insulator from which the sheds project
Note 1 to entry: Also known as shank on smaller insulators.
[SOURCE: IEC 60050-471:2007, 471-01-11]
3.7
shed (of an insulator)
insulating part, projecting from the insulator trunk, intended to increase the creepage distance
Note 1 to entry: The shed can be with or without ribs.
[SOURCE: IEC 60050-471:2007, 471-01-15]
3.8
cutout fuse-base
fuse-base that uses an insulator or insulators having a single point mounting bracket
Note 1 to entry: The mounting bracket is generally located centrally between the terminals that are mounted at
the outer ends of the insulator(s).
3.9
resin insulator
polymeric insulator whose insulating body consists of a solid shank and sheds protruding from
the shank made from only one organic based housing material (e.g. cycloaliphatic epoxy)

– 8 – IEC 60282-4:2020 © IEC 2020
3.10
interface
surface between the different materials
Note 1 to entry: Various interfaces occur in most composite insulators, for example:
– between housing an
...