SIST EN IEC 60282-4:2020
(Main)High-voltage fuses - Part 4: Additional testing requirements for high-voltage expulsion fuses utilizing polymeric insulators (IEC 60282-4:2020)
High-voltage fuses - Part 4: Additional testing requirements for high-voltage expulsion fuses utilizing polymeric insulators (IEC 60282-4:2020)
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.
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)
IEC 60282-4:2020 s'applique aux fusibles à expulsion conformes à l'IEC 60282.2 et spécifie les exigences d'essai supplémentaires pour les fusibles qui comprennent un socle de déconnecteur à isolateurs polymériques.
Visokonapetostne varovalke - 4. del: Dodatne zahteve za preskušanje visokonapetostnih izklopnih varovalk s polimernimi izolatorji (IEC 60282-4:2020)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 60282-4:2020
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
SIST EN IEC 60282-4:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 60282-4:2020
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SIST EN IEC 60282-4:2020
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
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SIST EN IEC 60282-4:2020
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)
2
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SIST EN IEC 60282-4:2020
EN IEC 60282-4:2020 (E)
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)
3
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SIST EN IEC 60282-4:2020
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SIST EN IEC 60282-4:2020
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
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: 7 ----------------------
SIST EN IEC 60282-4:2020
– 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
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SIST EN IEC 60282-4:2020
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.
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SIST EN IEC 60282-4:2020
– 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.
---------------------- Page: 10 ----------------------
SIST EN IEC 60282-4:2020
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.
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SIST EN IEC 60282-4:2020
– 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]
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SIST EN IEC 60282-4:2020
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)
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SIST EN IEC 60282-4:2020
– 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
...
SLOVENSKI STANDARD
oSIST prEN IEC 60282-4:2018
01-december-2018
Dodatne zahteve za preskušanje visokonapetostnih izklopnih varovalk s
polimernimi izolatorji
Additional testing requirements for high-voltage expulsion fuses utilizing polymeric
insulators
Ta slovenski standard je istoveten z: prEN IEC 60282-4:2018
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
oSIST prEN IEC 60282-4:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN IEC 60282-4:2018
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oSIST prEN IEC 60282-4:2018
32A/342/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60282-4 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2018-10-26 2019-01-18
SUPERSEDES DOCUMENTS:
32A/333/CD,32A/337/CC
IEC SC 32A : HIGH-VOLTAGE FUSES
SECRETARIAT: SECRETARY:
France Mr Raphaël Buisson
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 36
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:
Additional testing requirements for high-voltage expulsion fuses utilizing polymeric insulators
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
Copyright © 2018 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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oSIST prEN IEC 60282-4:2018
IEC CDV 60282-4/ED1 IEC:2018 – 2 – 32A/342/CDV
1 CONTENTS
2 FOREWORD . 3
3 INTRODUCTION . 5
4 1 Scope . 6
5 2 Normative references . 6
6 3 Terms and definitions . 6
7 4 Type tests . 7
8 4.1 General requirements . 7
9 4.2 Mechanical tests . 7
10 4.2.1 Mechanical stressing at temperature extremes . 7
11 4.2.2 Long term deformation/creep testing . 10
12 4.3 Environmental tests . 10
13 4.3.1 General . 10
14 4.3.2 Accelerated weathering test . 10
15 4.3.3 Tracking and erosion test . 11
16 4.3.4 Flammability test . 13
17 4.4 Tests on interfaces and connections of end fittings . 13
18 4.4.1 General . 13
19 4.4.2 Water immersion pre-stressing procedure . 13
20 4.4.3 Verification Tests . 13
21 4.5 Breaking tests with dye penetration . 14
22 4.5.1 General . 14
23 4.5.2 Description of tests to be made . 14
24 4.6 Acceptance criteria . 14
25 Bibliography . 15
26
27 Figure 1 – Test sequence . 8
28 Figure 2 – Dye penetration test arrangement . 9
29 Figure 3 – Tracking wheel test arrangement . 12
30
31
32
33
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oSIST prEN IEC 60282-4:2018
IEC CDV 60282-4/ED1 IEC:2018 – 3 – 32A/342/CDV
34 INTERNATIONAL ELECTROTECHNICAL COMMISSION
35 ____________
36
37 ADDITIONAL TESTING REQUIREMENTS FOR HIGH-VOLTAGE EXPULSION
38 FUSES UTILIZING POLYMERIC INSULATORS
39
40
41 FOREWORD
42 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
43 national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-
44 operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to
45 other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available
46 Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical
47 committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work.
48 International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation.
49 IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions
50 determined by agreement between the two organizations.
51 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
52 consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC
53 National Committees.
54 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees
55 in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate,
56 IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.
57 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently
58 to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication
59 and the corresponding national or regional publication shall be clearly indicated in the latter.
60 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment
61 services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by
62 independent certification bodies.
63 6) All users should ensure that they have the latest edition of this publication.
64 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of
65 its technical committees and IEC National Committees for any personal injury, property damage or other damage of any
66 nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the
67 publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
68 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
69 indispensable for the correct application of this publication.
70 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights.
71 IEC shall not be held responsible for identifying any or all such patent rights.
72 International Standard IEC 60282-4 has been prepared by subcommittee SC32A: High-voltage fuses,
73 of IEC technical committee TC32: Fuses.
74 The text of this International Standard is based on the following documents:
FDIS Report on voting
32A/XX/FDIS 32A/XX/RVD
75
76 Full information on the voting for the approval of this International Standard can be found in the report
77 on voting indicated in the above table.
78 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
79 Acknowledgments:
80 The Working Group thanks the Institute of Electrical and Electronics Engineers, Incorporated, (IEEE) for
81 permission to reproduce information from its global Standards IEEE C37.41-2016. All such extracts are
82 copyright of IEEE, Piscataway, New Jersey. All rights reserved. Further information on the IEEE is available
83 from www.standards.ieee.org. IEEE has no responsibility for the placement and context in which the extracts
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oSIST prEN IEC 60282-4:2018
IEC CDV 60282-4/ED1 IEC:2018 – 4 – 32A/342/CDV
84 and contents are reproduced by the author, nor is IEEE in any way responsible for the other content or
85 accuracy therein. Note that any comments or interpretations of the Material are those of the author, and do not
86 represent the views of IEEE, its members or affiliates.
87 The committee has decided that the contents of this document will remain unchanged until the stability
88 date indicated on the IEC website under "http://webstore.iec.ch" in the data related to the specific
89 document. At this date, the document will be
90 • reconfirmed,
91 • withdrawn,
92 • replaced by a revised edition, or
93 • amended.
94
95
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oSIST prEN IEC 60282-4:2018
IEC CDV 60282-4/ED1 IEC:2018 – 5 – 32A/342/CDV
96 INTRODUCTION
97 High-voltage expulsion fuses are tested to IEC 60282-2 which recognizes that fuse-bases may use
98 polymer (non-ceramic) insulators. However, very little additional testing is specified for fuses using
99 such insulators. In the case of polymer post insulators and suspension insulators, only artificial
100 pollution tests are required according to IEC 61592 and IEC 61109, respectively. However, for fuses
101 that use insulators not covered by these standards, such as certain fuse-cutouts, the additional testing
102 required is to be by agreement between manufacturer and user. Fuses that need such “additional
103 testing” are expulsion fuses that utilize polymer insulators in which a single mounting bracket is used,
104 either at the centre of an insulator or connected to two insulators (a “cutout fuse-base”). As the market
105 for expulsion fuses using polymer insulators has grown, manufacturers have introduced many tests in
106 addition to artificial pollution tests, covering other aspects of a fuse’s performance. This standard
107 formalises such testing and provides standardisation and consistency. It should be noted that the
108 document focusses on product testing as opposed to material testing. In addition to drawing on test
109 procedures covered by IEC 62217:2012, “Polymeric HV insulators for indoor and outdoor use -
110 General definitions, test methods and acceptance criteria”, material from IEEE Std C37.41:2016
111 (primarily 18.1.2 “Long-term deformation/creep testing”) is also used, by permission from IEEE.
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oSIST prEN IEC 60282-4:2018
IEC CDV 60282-4/ED1 IEC:2018 – 6 – 32A/342/CDV
112 ADDITIONAL TESTING REQUIREMENTS FOR HIGH-VOLTAGE EXPULSION
113 FUSES UTILIZING POLYMERIC INSULATORS
114
115
116 1 Scope
117 This part of IEC 60282 applies to expulsion fuses complying with IEC 60282-2 and specifies additional
118 testing requirements for fuses employing a cutout fuse-base that utilizes polymeric insulators.
119 2 Normative references
120 The following documents are referred to in the text in such a way that some or all of their content
121 constitutes requirements of this document. For dated references, only the edition cited applies. For
122 undated references, the latest edition of the referenced document (including any amendments) applies.
123 IEC 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test requirements
124 IEC 60282-2:2008, High-voltage fuses - Part 2: Expulsion fuses
125 IEC 62217:2012, Polymeric HV insulators for indoor and outdoor use - General definitions, test
126 methods and acceptance criteria
127 ISO 4287, Geometrical Product Specifications (GPS) – Surface Texture: Profile method – Terms,
128 definitions and surface texture parameters
129 ISO 4892-2, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc sources
130 ISO 868:2003, Plastics and ebonite – Determination of indentation hardness by means of a durometer
131 (Shore hardness)
132 3 Terms and definitions
133 For the purposes of this document, the following terms and definitions apply.
134 ISO and IEC maintain terminological databases for use in standardization at the following addresses:
135 • IEC Electropedia: available at http://www.electropedia.org/
136 • ISO Online browsing platform: available at http://www.iso.org/obp
137 3.1
138 polymeric Insulator
139 insulator whose insulating body consists of at least one organic based material
140 Note 1 to entry: Polymeric insulators are also known as non-ceramic insulators.
141 Note 2 to entry: Coupling devices may be attached to the ends of the insulating body.
142 [SOURCE: IEC 60050-471:2007, 471-01-13]
143 3.2
144 composite polymeric insulator
145 polymeric insulator consisting of at least two separate polymeric insulating parts, namely a core and a
146 housing, equipped with end fittings
147 [SOURCE: IEC 60050-471:2007, 471-01-02, modified to include the term “polymeric"]
148 3.3
149 core (of a composite polymeric insulator)
150 central insulating part of a composite polymeric insulator that provides the primary
151 mechanical/strength characteristics of the insulator
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oSIST prEN IEC 60282-4:2018
IEC CDV 60282-4/ED1 IEC:2018 – 7 – 32A/342/CDV
152 [SOURCE: IEC 60050-471:2007, 471-01-03 modified: addition of “composite polymeric”; addition of
153 “primary”, “strength” and “of the insulator”; note deleted]
154 3.4
155 housing (of a composite polymeric insulator)
156 external insulating part(s) of a composite insulator that provides the necessary leakage distance,
157 other dielectric characteristics of the insulator, and protects the core from the environment
158 [SOURCE: IEC 60050-471:2007, 471-01-09, modified]
159 3.5
160 insulator body
161 insulating assembly that contains the insulator and permanent fittings
162 3.6
163 insulator trunk
164 central insulating part of an insulator from which the sheds project
165 Note 1 to entry: Also known as shank on smaller insulators.
166 [SOURCE: IEC 60050-471:2007, 471-01-11]
167 3.7
168 Shed (of an insulator)
169 insulating part, projecting from the insulator trunk, intended to increase the creepage distance
170 Note 1 to entry: The shed can be with or without ribs.
171 [SOURCE: IEC 60050-471:2007, 471-01-15]
172 3.8
173 cutout fuse-base
174 fuse-base that uses an insulator or insulators having a single point mounting bracket, generally
175 located centrally between the terminals that are mounted at the outer ends of the insulator(s)
176 3.9
177 Resin insulator
178 polymeric insulator whose insulating body is made from only one insulating part and which is equipped
179 with end fittings
180 polymeric insulator whose insulating body consists of a solid shank and sheds protruding from the
181 shank made from only one organic based housing material (e.g. cycloaliphatic epoxy)
182
183 4 Type tests
184 4.1 General requirements
185 Fuses according to this standard shall comply with the requirements of IEC 60282-2, except for those
186 that are specifically replaced with requirements specified in this standard for the following type tests.
187 4.2 Mechanical tests
188 4.2.1 Mechanical stressing at temperature extremes
189 4.2.1.1 General
190 When conducting this test with a fuse using a polymeric insulator(s), it is not necessary to also
191 perform the mechanical tests outlined in 8.8.1 of IEC 60282-2:2008. The testing covered in 4.2.1 only
192 applies to disconnecting devices that can be opened and closed manually.
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oSIST prEN IEC 60282-4:2018
IEC CDV 60282-4/ED1 IEC:2018 – 8 – 32A/342/CDV
193 4.2.1.2 Test procedure
194 Three new fuses shall be used for this test. The test samples shall consist of the fuse-base, fuse-
195 carrier, and end fittings. The fuse carriers should contain fuse-links of sufficiently high current rating,
196 or dummy links, so that the fuse-links are not subjected to the same endurance test as the fuse-bases
197 and fuse-carriers.
198 All samples shall be cycled between -30 °C (+0 ºC, −5 ºC) and +40 °C (+5 ºC, −0 ºC). The samples
199 shall remain at each temperature extreme for a minimum of 8 h per cycle. The cycle time from one
200 temperature extreme to the other shall be any convenient value, however the sample rate of
201 temperature change should be no more than 0.5 ºC/min and steps should be taken to avoid thermal
202 shock. All samples shall complete 4 cycles (a cycle includes both temperature extremes) resulting in a
203 minimum total test time of approximately 83 h. See Figure 1 for a representation of the preferred test
204 sequence. If the specified minimum ambient air tempe
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