High-voltage fuses - Part 1: Current-limiting fuses (IEC 60282-1:2020)

This part of IEC 60282 applies to all types of high-voltage current-limiting fuses designed for
use outdoors or indoors on alternating current systems of 50 Hz and 60 Hz and of rated
voltages exceeding 1 000 V.

Hochspannungssicherungen - Teil 1: Strombegrenzende Sicherungen (IEC 60282-1:2020)

Fusibles à haute tension - Partie 1: Fusibles limiteurs de courant (IEC 60282-1:2020)

IEC 60282-1:2020 s'applique à tous les types de fusibles à haute tension limiteurs de courant destinés à être utilisés à l'extérieur ou à l'intérieur sur des réseaux à courant alternatif 50 Hz et 60 Hz et dont les tensions assignées sont supérieures à 1 000 V. Cette huitième édition annule et remplace la septième édition parue en 2009. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: – des informations supplémentaires concernant les percuteurs thermiques; – la division des valeurs assignées, des caractéristiques et des essais de type en un groupe qui s'applique à tous les fusibles et en un groupe qui s'applique à des types particuliers d'éléments de remplacement et des applications; – le réglage des tensions de la Série II et les essais pour satisfaire aux tensions réseaux normalisées actuelles et aux applications d'Amérique du Nord; – la clarification des exigences pour les éléments de remplacement utilisés avec des températures environnantes supérieures à 40 °C; – et la clarification d'exigences homogènes pour les éléments de remplacement contenant un élément.

Visokonapetostne varovalke - 1. del: Tokovno omejilne varovalke (IEC 60282-1:2020)

General Information

Status
Published
Public Enquiry End Date
30-Dec-2018
Publication Date
10-Nov-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Jun-2020
Due Date
09-Aug-2020
Completion Date
11-Nov-2020

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SLOVENSKI STANDARD
SIST EN IEC 60282-1:2020
01-december-2020
Nadomešča:
SIST EN 60282-1:2010
SIST EN 60282-1:2010/A1:2014
Visokonapetostne varovalke - 1. del: Tokovno omejilne varovalke (IEC 60282-
1:2020)
High-voltage fuses - Part 1: Current-limiting fuses (IEC 60282-1:2020)
Hochspannungssicherungen - Teil 1: Strombegrenzende Sicherungen (IEC 60282-
1:2020)

Fusibles à haute tension - Partie 1: Fusibles limiteurs de courant (IEC 60282-1:2020)

Ta slovenski standard je istoveten z: EN IEC 60282-1:2020
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
SIST EN IEC 60282-1:2020 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN IEC 60282-1:2020
---------------------- Page: 2 ----------------------
SIST EN IEC 60282-1:2020
EUROPEAN STANDARD EN IEC 60282-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2020
ICS 29.120.50 Supersedes EN 60282-1:2009 and all of its amendments
and corrigenda (if any)
English Version
High-voltage fuses - Part 1: Current-limiting fuses
(IEC 60282-1:2020)

Fusibles à haute tension - Partie 1: Fusibles limiteurs de Hochspannungssicherungen - Teil 1: Strombegrenzende

courant Sicherungen
(IEC 60282-1:2020) (IEC 60282-1:2020)

This European Standard was approved by CENELEC on 2020-05-19. 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 60282-1:2020 E
---------------------- Page: 3 ----------------------
SIST EN IEC 60282-1:2020
EN IEC 60282-1:2020 (E)
European foreword

The text of document 32A/347/FDIS, future edition 8 of IEC 60282-1, 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 60282-1:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-02-19

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-05-19

document have to be withdrawn

This document supersedes EN 60282-1:2009 and all of its amendments and corrigenda (if any).

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 60282-1:2020 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 60085:2007 NOTE Harmonized as EN 60085:2008 (not modified)
IEC 62271-100:2008 NOTE Harmonized as EN 62271-100:2009 (not modified)

IEC 62271-100:2008/A1:2012 NOTE Harmonized as EN 62271-100:2009/A1:2012 (not modified)

IEC 62271-100:2008/A2:2017 NOTE Harmonized as EN 62271-100:2009/A2:2017 (not modified)

IEC 62271-103 NOTE Harmonized as EN 62271-103
ISO 179 (series) NOTE Harmonized as EN ISO 179 (series)
---------------------- Page: 4 ----------------------
SIST EN IEC 60282-1:2020
EN IEC 60282-1:2020 (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: General EN 60060-1 2010
definitions and test requirements
IEC 60071-1 - Insulation co-ordination - Part 1: Definitions, EN IEC 60071-1 -
principles and rules
IEC 60549 - High-voltage fuses for the external protection EN 60549 -
of shunt capacitors
IEC 60644 - Specification for high-voltage fuse-links for EN 60644 -
motor circuit applications
IEC 62271-105 - High-voltage switchgear and controlgear - - -
Part 105: Alternating current switch-fuse
combinations for rated voltages above 1 kV
up to and including 52 kV
---------------------- Page: 5 ----------------------
SIST EN IEC 60282-1:2020
---------------------- Page: 6 ----------------------
SIST EN IEC 60282-1:2020
IEC 60282-1
Edition 8.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage fuses –
Part 1: Current-limiting fuses
Fusibles à haute tension –
Partie 1: Fusibles limiteurs de courant
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-8088-1

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 60282-1:2020
– 2 – IEC 60282-1:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 6

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 8

3.1 Electrical characteristics ......................................................................................... 8

3.2 Fuses and their component parts .......................................................................... 12

3.3 Additional terms .................................................................................................... 14

4 Normal and special service conditions ........................................................................... 16

4.1 Normal service conditions ..................................................................................... 16

4.2 Special service conditions ..................................................................................... 17

4.2.1 General ......................................................................................................... 17

4.2.2 Altitude .......................................................................................................... 17

4.3 Environmental behaviour ...................................................................................... 18

5 Ratings and characteristics ............................................................................................ 18

5.1 General ................................................................................................................. 18

5.2 Ratings and characteristics that are applicable to all fuses ................................... 18

5.2.1 Rated voltage (U ) ......................................................................................... 18

5.2.2 Rated current of a fuse-base ......................................................................... 19

5.2.3 Rated current of a fuse-link (I ) ...................................................................... 19

5.2.4 Rated insulation level (of a fuse-base) ........................................................... 19

5.2.5 Rated breaking capacity ................................................................................ 21

5.2.6 Rated frequency ............................................................................................ 21

5.2.7 Temperature limits ......................................................................................... 21

5.2.8 Limits of switching voltage ............................................................................. 22

5.2.9 Time-current characteristics .......................................................................... 24

5.2.10 Cut-off characteristic ..................................................................................... 25

5.2.11 I t characteristics .......................................................................................... 25

5.2.12 Power dissipation .......................................................................................... 25

5.3 Ratings and characteristics of particular fuse-link types and applications .............. 25

5.3.1 Fuse-links for transformer applications .......................................................... 25

5.3.2 Fuse-links for motor circuit applications ......................................................... 26

5.3.3 Fuse-links for capacitor protection ................................................................. 26

5.3.4 Fuses fitted with indicating devices ................................................................ 26

5.3.5 Back-Up fuses intended for use in a switch-fuse combination according

to IEC 62271-105 .......................................................................................... 28

5.3.6 Allowable continuous current of a fuse-link (I ) .............................................. 28

5.3.7 Maximum enclosure current (I ) ................................................................. 28

fep

6 Design, construction and performance ........................................................................... 29

6.1 General requirements with respect to fuse operation ............................................. 29

6.1.1 General ......................................................................................................... 29

6.1.2 Standard conditions of use ............................................................................ 29

6.1.3 Standard conditions of behaviour ................................................................... 30

6.2 Identifying markings .............................................................................................. 30

6.3 Dimensions ........................................................................................................... 31

7 Type tests performed on all fuses .................................................................................. 31

7.1 Conditions for making the tests ............................................................................. 31

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SIST EN IEC 60282-1:2020
IEC 60282-1:2020 © IEC 2020 – 3 –

7.2 List of type tests ................................................................................................... 32

7.3 Common test practices for all type tests ................................................................ 32

7.3.1 General ......................................................................................................... 32

7.3.2 Mounting of fuse-link ..................................................................................... 32

7.3.3 Condition of device to be tested ..................................................................... 32

7.3.4 Mounting of fuses .......................................................................................... 32

7.4 Dielectric tests ...................................................................................................... 32

7.4.1 Test practices ................................................................................................ 32

7.4.2 Application of test voltage for impulse and power-frequency test ................... 33

7.4.3 Atmospheric conditions during test ................................................................ 33

7.4.4 Lightning impulse voltage dry tests ................................................................ 33

7.4.5 Power-frequency voltage dry tests ................................................................. 34

7.4.6 Power-frequency wet tests ............................................................................. 34

7.5 Temperature-rise tests and power-dissipation measurement ................................. 34

7.5.1 Test practices ................................................................................................ 34

7.5.2 Measurement of temperature ......................................................................... 35

7.5.3 Measurement of power dissipation ................................................................. 36

7.6 Breaking tests ....................................................................................................... 36

7.6.1 Test practices ................................................................................................ 36

7.6.2 Test procedure .............................................................................................. 46

7.6.3 Alternative test methods for Test Duty 3 ........................................................ 48

7.6.4 Breaking tests for fuse-links of a homogeneous series ................................... 51

7.6.5 Acceptance of a homogeneous series of Back-Up fuse-links by

interpolation................................................................................................... 53

7.6.6 Acceptance of a homogeneous series of fuse-links of different lengths .......... 53

7.7 Tests for time-current characteristics .................................................................... 54

7.7.1 Test practices ................................................................................................ 54

7.7.2 Test procedures ............................................................................................. 54

7.8 Electromagnetic compatibility (EMC) ..................................................................... 54

8 Type tests for particular fuse-link types and applications ............................................... 55

8.1 General ................................................................................................................. 55

8.2 List of type tests ................................................................................................... 55

8.3 Tests required for a particular type of fuse or application ...................................... 55

8.3.1 Indicator tests (for fuses fitted with indicators) ............................................... 55

8.3.2 Striker tests (for fuses fitted with strikers) ...................................................... 56

8.3.3 Tests for Back-Up fuses for use in switch-fuse combination of

IEC 62271-105 .............................................................................................. 58

8.3.4 Liquid-tightness tests ..................................................................................... 59

8.4 Tests performed at the request of a user ............................................................... 64

8.4.1 Thermal shock tests for outdoor fuses ........................................................... 64

8.4.2 Waterproof test (ingress of moisture) for outdoor fuses .................................. 65

9 Routine tests ................................................................................................................. 65

Annex A (normative) Method of drawing the envelope of the prospective and transient

recovery voltage of a circuit and determining the representative parameters ......................... 66

A.1 Introduction ........................................................................................................... 66

A.2 Drawing the envelope ........................................................................................... 66

A.3 Determination of parameters ................................................................................. 66

Annex B (informative) Reasons which led to the choice of TRV values for Test Duties

1, 2 and 3 ............................................................................................................................. 68

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SIST EN IEC 60282-1:2020
– 4 – IEC 60282-1:2020 © IEC 2020

Annex C (informative) Preferred arrangements for temperature-rise tests of liquid-

tight fuse-links ...................................................................................................................... 70

Annex D (informative) Types and dimensions of current-limiting fuse-links specified in

existing national standards ................................................................................................... 71

Annex E (normative) Requirements for certain types of fuse-links intended for use at

surrounding temperatures above 40 °C ................................................................................. 74

E.1 Types of fuse-link covered by this annex ............................................................... 74

E.1.1 General ......................................................................................................... 74

E.1.2 Covered fuse-link types ................................................................................. 74

E.1.3 Exempted fuse-links ...................................................................................... 74

E.1.4 Introduction ................................................................................................... 74

E.2 Definitions............................................................................................................. 75

E.3 Preferred MAT ratings ........................................................................................... 75

E.4 Specific service conditions .................................................................................... 75

E.5 Additional breaking test requirements ................................................................... 75

E.5.1 Test practices ................................................................................................ 75

E.5.2 Test procedure .............................................................................................. 76

E.5.3 Full-Range fuse Test Duty 3 tests .................................................................. 76

E.6 Full-Range fuse: determination of I current ......................................................... 77

Annex F (informative) Criteria for determining I testing validity ........................................... 78

F.1 Introduction ........................................................................................................... 78

F.2 Breaking processes .............................................................................................. 78

Bibliography .......................................................................................................................... 79

Figure 1 – Terminology ......................................................................................................... 13

Figure 2 – Permissible switching voltages for fuse-links of small current ratings

(Table 8) ............................................................................................................................... 24

Figure 3 – Various stages of the striker travel ....................................................................... 27

Figure 4 – Representation of a specified TRV by a two-parameter reference line and a

delay line .............................................................................................................................. 41

Figure 5 – Example of a two-parameter reference line for a TRV complying with the

conditions of the type test ..................................................................................................... 42

Figure 6 – Breaking tests – Arrangement of the equipment ................................................... 46

Figure 7 – Breaking tests – Typical circuit diagram for Test Duties 1 and 2 ........................... 46

Figure 8 – Breaking tests – Typical circuit diagram for Test Duty 3 ....................................... 47

Figure 9 – Breaking tests – Interpretation of oscillograms for Test Duty 1 ............................. 49

Figure 10 – Breaking tests – Interpretation of oscillograms for Test Duty 2 (calibration

traces as in a) of Figure 9) .................................................................................................... 50

Figure 11 – Breaking tests – Interpretation of oscillograms for Test Duty 3 ........................... 50

Figure 12 – Test sequence for switchgear type applications .................................................. 61

Figure 13 – Test sequence for transformer type applications ................................................ 62

Figure 14 – Test sequence for series a) test for transformer type applications ...................... 63

Figure 15 – Test sequence for series b) test for transformer type applications ...................... 64

Figure A.1 – Example of a two-parameter reference line for a TRV whose initial portion

is concave towards the left .................................................................................................... 67

Figure A.2 – Example of a two-parameter reference line for an exponential TRV .................. 67

Figure C.1 – Test tank for temperature-rise tests of liquid-tight fuses .................................... 70

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SIST EN IEC 60282-1:2020
IEC 60282-1:2020 © IEC 2020 – 5 –

Figure C.2 – Details of clamping arrangement for fuse-link in the tank .................................. 70

Table 1 – Altitude correction factors – Dielectric withstand.................................................... 17

Table 2 – Altitude correction factors – Current-carrying capability ......................................... 17

Table 3 – Rated voltages ...................................................................................................... 19

Table 4 – Fuse-base rated insulation levels – Series I .......................................................... 20

Table 5 – Fuse-base rated insulation levels – Series II ......................................................... 20

Table 6 – Limits of temperature and temperature rise for components and materials............. 22

Table 7 – Maximum permissible switching voltages............................................................... 23

Table 8 – Maximum permissible switching voltages for certain fuse-links of small

current ratings ...................................................................................................................... 23

Table 9 – Striker mechanical characteristics ......................................................................... 27

Table 10 – Electrical connection to the test circuit – Conductor sizes .................................... 35

Table 11 – Breaking tests – Parameters ............................................................................... 39

Table 12 – Standard values of rated TRV for I – Series I rated voltages.............................. 43

Table 13 – Standard values of rated TRV for I – Series II rated voltages............................. 43

Table 14 – TRV for Test Duty 2 – Series I rated voltages ...................................................... 44

Table 15 – TRV for Test Duty 2 – Series II rated voltages ..................................................... 45

Table 16 – Breaking test requirements for fuse-links of a homogeneous series ..................... 52

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SIST EN IEC 60282-1:2020
– 6 – IEC 60282-1:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE FUSES –
Part 1: Current-limiting fuses
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

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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 60282-1 has been prepared by subcommittee 32A: High-voltage

fuses, of IEC technical committee 32: Fuses.
This eighth edition cancels and replaces the seventh edition published in 2009.

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

edition:
– additional information concerning thermally operated strikers;

– the division of ratings, characteristics and type tests into those applicable to all fuses and

those applicable to particular fuse-link types and applications;

– adjustment of Series II voltages and tests to meet present North American standard

system voltages and applications;

– clarification of requirements for fuse-links used in surrounding temperatures above 40 °C;

and
-----------------
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Visokonapetostne varovalke - 1. del: Tokovno omejilne varovalkeHochspannungssicherungen - Teil 1: Strombegrenzende SicherungenFusibles à haute tension - Partie 1: Fusibles limiteurs de courantHigh-voltage fuses - Part 1: Current-limiting fuses29.120.50Fuses and other overcurrent protection devicesICS:Ta slovenski standard je istoveten z:prEN IEC 60282-1:2018oSIST prEN IEC 60282-1:2018en,fr,de01-december-2018oSIST prEN IEC 60282-1:2018SLOVENSKI

STANDARD
oSIST prEN IEC 60282-1:2018
32A/341/CDV COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER: IEC 60282-1 ED8
DATE OF CIRCULATION: CLOSING DATE FOR VOTING: 2018-10-19 2019-01-11
SUPERSEDES DOCUMENTS: 32A/326/CD,32A/331A/CC

IEC SC 32A : HIGH-VOLTAGE FUSES SECRETARIAT: SECRETARY: France Mr Raphaël Buisson OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD: SC 17A,SC 17C

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 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.

NOT SUBMITTED FOR CENELEC PARALLEL VOTING

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: High-voltage fuses - Part 1: Current-limiting fuses
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.

oSIST prEN IEC 60282-1:2018
2 IEC CDV 60282-1/ED8  IEC:2018

32A/341/CDV CONTENTS 1 FOREWORD ........................................................................................................................... 5 2 1 General ........................................................................................................................... 7 3 1.1 Scope ..................................................................................................................... 7 4 1.2 Normative references .............................................................................................. 7 5 2 Normal and special service conditions ............................................................................. 7 6 2.1 Normal service conditions ....................................................................................... 7 7 2.2 Special service conditions ....................................................................................... 8 8 2.3 Environmental behaviour ........................................................................................ 9 9 3 Definitions ....................................................................................................................... 9 10 3.1 Electrical characteristics ......................................................................................... 9 11 3.2 Fuses and their component parts .......................................................................... 13 12 3.3 Additional terms .................................................................................................... 15 13 4 Ratings and characteristics ............................................................................................ 16 14 4.1 General ................................................................................................................. 16 15 4.2 Ratings and characteristics that are applicable to all fuses ................................... 17 16 4.3 Characteristics of particular fuse-link types and applications ................................. 24 17 5 Design, construction and performance ........................................................................... 27 18 5.1 General requirements with respect to fuse operation ............................................. 27 19 5.2 Identifying markings .............................................................................................. 28 20 5.3 Dimensions ........................................................................................................... 29 21 6 Type tests performed on all fuses .................................................................................. 29 22 6.1 Conditions for making the tests ............................................................................. 29 23 6.2 List of type tests ................................................................................................... 29 24 6.3 Common test practices for all type tests ................................................................ 30 25 6.4 Dielectric tests ...................................................................................................... 30 26 6.5 Temperature-rise tests and power-dissipation measurement ................................. 32 27 6.6 Breaking tests ....................................................................................................... 33 28 6.7 Tests for time-current characteristics .................................................................... 49 29 6.8 Electromagnetic compatibility (EMC) ..................................................................... 49 30 7 Type tests for particular fuse-link types and applications ............................................... 49 31 7.1 General ................................................................................................................. 49 32 7.2 List of type tests ................................................................................................... 50 33 7.3 Tests required for a particular type of fuse or application ...................................... 50 34 7.4 Tests performed at the request of a user ............................................................... 58 35 8 Routine tests ................................................................................................................. 59 36 Annex A (normative)

Method of drawing the envelope of the prospective and transient 37 recovery voltage of a circuit and determining the representative parameters ................. 60 38 A.1 Introduction ........................................................................................................... 60 39 A.2 Drawing the envelope ........................................................................................... 60 40 A.3 Determination of parameters ................................................................................. 60 41 Annex B (informative)

Reasons which led to the choice of TRV values

for Test Duties 42 1, 2 and 3 ...................................................................................................................... 62 43 Annex C (informative)

Preferred arrangements for temperature-rise tests of

liquid-44 tight fuse-links ............................................................................................................... 64 45 Annex D (informative)

Types and dimensions of current-limiting fuse-links specified in

46 existing national standards ............................................................................................ 65 47 Annex E (normative)

Requirements for certain types of fuse-links intended for use at 48 surrounding temperatures above 40 °C .......................................................................... 68 49 oSIST prEN IEC 60282-1:2018

3 IEC CDV 60282-1/ED8  IEC:2018

32A/341/CDV E.1 Types of fuse-link covered by this annex............................................................... 68 50 E.2 Definitions ............................................................................................................ 68 51 E.3 Preferred MAT ratings ........................................................................................... 69 52 E.4 Specific service conditions .................................................................................... 69 53 E.5 Additional breaking test requirements ................................................................... 69 54 E.6 Full-Range fuse: determination of I3 current ......................................................... 70 55 Annex F (informative)

Criteria for determining It testing validity ............................................ 72 56 F.1 Introduction ........................................................................................................... 72 57 F.2 Breaking processes .............................................................................................. 72 58

59 Figure 1 – Terminology ......................................................................................................... 14 60 Figure 2 – Permissible switching voltages for fuse-links

of small current ratings 61 (Table 8) ............................................................................................................................... 23 62 Figure 3 – Various stages of the striker travel ....................................................................... 25 63 Figure 4 – Representation of a specified TRV by a two-parameters reference line

and 64 a delay line ........................................................................................................................... 37 65 Figure 5 – Example of a two-parameters reference line for a TRV complying with

the 66 conditions of the type test ..................................................................................................... 38 67 Figure 6 – Breaking tests – Arrangement of the equipment ................................................... 41 68 Figure 7 – Breaking tests – Typical circuit diagram for Test Duties 1 and 2 ........................... 42 69 Figure 8 – Breaking tests – Typical circuit diagram for Test Duty 3 ....................................... 42 70 Figure 9 – Breaking tests – Interpretation of oscillograms for Test Duty 1 ............................. 44 71 Figure 10 – Breaking tests – Interpretation of oscillograms for Test Duty 2 (calibration 72 traces as in a) of Figure 9) .................................................................................................... 45 73 Figure 11 – Breaking tests – Interpretation of oscillograms for Test Duty 3 ........................... 45 74 Figure 12 – Test sequence for switchgear type applications .................................................. 55 75 Figure 13 – Test sequence for transformer type applications ................................................ 56 76 Figure 14 – Test sequence for series a) test for transformer type applications ...................... 57 77 Figure 15 – Test sequence for series b) test for transformer type applications ...................... 58 78 Figure A.1 – Example of a two-parameters reference line for a TRV whose initial 79 portion is concave towards the left ........................................................................................ 61 80 Figure A.2 – Example of a two-parameters reference line for an exponential TRV ................. 61 81 Figure C.1 – Test tank for temperature-rise tests of liquid-tight fuses .................................... 64 82 Figure C.2 – Details of clamping arrangement for fuse-link in the tank .................................. 64 83

84 Table 1 – Altitude correction factors – Dielectric withstand ..................................................... 9 85 Table 2 – Altitude correction factors – Current-carrying capability ........................................... 9 86 Table 3 – Rated voltages ...................................................................................................... 17 87 Table 4 – Fuse-base rated insulation levels – Series I .......................................................... 19 88 Table 5 – Fuse-base rated insulation levels – Series II ......................................................... 19 89 Table 6 – Limits of temperature and temperature rise for components and materials ............ 21 90 Table 7 – Maximum permissible switching voltages .............................................................. 22 91 Table 8 – Maximum permissible switching voltages for

certain fuse-links of small 92 current ratings ...................................................................................................................... 22 93 Table 9 – Striker mechanical characteristics ......................................................................... 26 94 Table 10 – Electrical connection to the test circuit – Conductor sizes .................................... 32 95 oSIST prEN IEC 60282-1:2018

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32A/341/CDV Table 11 – Breaking tests – Parameters ............................................................................... 36 96 Table 12 – Standard values of rated TRV for I1 – Series I rated voltages .............................. 39 97 Table 13 – Standard values of rated TRV for I1 – Series II rated voltages ............................. 39 98 Table 14 – TRV for Test Duty 2 – Series I rated voltages ...................................................... 40 99 Table 15 – TRV for Test Duty 2 – Series II rated voltages ..................................................... 40 100 Table 16 – Breaking test requirements for fuse-links of a homogeneous series ..................... 47 101 102 oSIST prEN IEC 60282-1:2018

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32A/341/CDV INTERNATIONAL ELECTROTECHNICAL COMMISSION 103 ____________ 104
105 HIGH-VOLTAGE FUSES – 106
107 Part 1: Current-limiting fuses 108
109

110 FOREWORD 111 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising 112 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote 113 international co-operation on all questions concerning standardization in the electrical and electronic fields. To 114 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, 115 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC 116 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested 117 in the subject dealt with may participate in this preparatory work. International, governmental and non-118 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely 119 with the International Organization for Standardization (ISO) in accordance with conditions determined by 120 agreement between the two organizations. 121 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international 122 consensus of opinion on the relevant subjects since each technical committee has representation from all 123 interested IEC National Committees.

124 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National 125 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC 126 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any 127 misinterpretation by any end user. 128 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications 129 transparently to the maximum extent possible in their national and regional publications. Any divergence 130 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in 131 the latter. 132 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity 133 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any 134 services carried out by independent certification bodies. 135 6) All users should ensure that they have the latest edition of this publication. 136 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and 137 members of its technical committees and IEC National Committees for any personal injury, property damage or 138 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and 139 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC 140 Publications.

141 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is 142 indispensable for the correct application of this publication. 143 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of 144 patent rights. IEC shall not be held responsible for identifying any or all such patent rights. 145 International Standard IEC 60282-1 has been prepared by subcommittee 32A: High-voltage 146 fuses, of IEC technical committee 32: Fuses. 147 This eighth edition cancels and replaces the seventh edition published in 2009. The content of 148 the amendment (2013) has been considered for this revision.

149 The main changes introduced by this new edition are: 150 Additional information concerning thermally operated strikers, the division of ratings, 151 characteristics and type tests into those applicable to all fuses and those applicable to 152 particular fuse-link types and applications, adjustment of Series II voltages and tests to meet 153 present North American standard system voltages and applications, clarification of 154 requirements for fuse-links used in surrounding temperatures above 40 °C, and clarification of 155 homogeneous requirements for fuse-links containing one element.

156 The text of this standard is based on the following documents: 157 FDIS Report on voting 32A/XX/FDIS 32A/XX/RVD oSIST prEN IEC 60282-1:2018

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32A/341/CDV Full information on the voting for the approval of this standard can be found in the report on 158 voting indicated in the above table. 159 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 160 The IEC 60282 series consists of the following parts, under the general title High-voltage 161 fuses: 162 – Part 1: Current-limiting fuses 163 – Part 2: Expulsion fuses 164 The committee has decided that the contents of this document will remain unchanged until the 165 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to 166 the specific document. At this date, the document will be

167 • reconfirmed, 168 • withdrawn, 169 • replaced by a revised edition, or 170 • amended. 171

172 173 oSIST prEN IEC 60282-1:2018
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32A/341/CDV HIGH-VOLTAGE FUSES – 174
175 Part 1: Current-limiting fuses 176

177 1 General 178 1.1 Scope 179 This part of IEC 60282 applies to all types of high-voltage current-limiting fuses designed for 180 use outdoors or indoors on alternating current systems of 50 Hz and 60 Hz and of rated 181 voltages exceeding 1 000 V. 182 1.2 Normative references 183 The following documents are referred to in the text in such a way that some or all of their 184 content constitutes requirements of this document. For dated references, only the edition 185 cited applies. For undated references, the latest edition of the referenced document (including 186 any amendments) applies. 187 IEC 60050-441:1984 + AMD1:2000, International Electrotechnical Vocabulary (IEV) – Chapter 188 441: Switchgear, controlgear and fuses

189 IEC 60050-614:2016, International Electrotechnical Vocabulary (IEV) – Chapter 614: Generation, 190 transmission and distribution of electricity – Operation 191 IEC 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test 192 requirements 193 IEC 60071-1:1993, Insulation coordination – Part 1: Definitions, principles and rules

194 IEC 60085:1984, Thermal evaluation and classification of electrical insulation 195 IEC 60549, High-voltage fuses for the external protection of shunt capacitors 196 IEC 60644, Specification for high-voltage fuse-links for motor circuit applications

197 IEC 62271-100:2008+AMD1:2012+AMD2:2017, High-voltage switchgear and controlgear – 198 Part 100: High-voltage alternating-current circuit-breakers 199 IEC 62271-105, High-voltage switchgear and controlgear – Part 105: Alternating current 200 switch-fuse combinations for rated voltages above 1 kV up to and including 52 kV

201 IEC/TR 62655:2013, Tutorial and application guide for high-voltage fuses 202 ISO 148-2:1998, Metallic materials – Charpy pendulum impact test – Part 2: Verification of 203 test machines 204 ISO 179 (all parts), Plastics – Determination of Charpy impact properties 205 2 Normal and special service conditions

206 2.1 Normal service conditions 207 Fuses complying with this standard are designed to be used under the following conditions. 208 a) The maximum ambient air temperature is 40 °C and its mean measured over a period of 209 24 h does not exceed 35 °C. 210 The minimum ambient air temperature is –25 °C. 211 NOTE 1 The time-current characteristics of fuses will be modified at the minimum and maximum 212 temperatures. 213 b) The altitude does not exceed 1 000 m.

214 c) The ambient air is not excessively (or abnormally) polluted by dust, smoke, corrosive or 215 flammable gases, vapour or salt. 216 oSIST prEN IEC 60282-1:2018

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32A/341/CDV d) For indoor installations, the conditions of humidity are under consideration but, in the 217 meantime, the following figures can be used as a guide: 218 – the average value of the relative humidity, measured during a period of 24 h, does not 219 exceed 95 %; 220 – the average value of the vapour pressure, for a period of 24 h, does not exceed 221 22 hPa; 222 – the average value of the relative humidity, for a period of one month, does not exceed 223 90 %; 224 – the average value of the water vapour pressure, for a period of one month, does not 225 exceed 18 hPa. 226 For these conditions, condensation may occasionally occur. 227 NOTE 2 Condensation can be expected where sudden temperature changes occur in periods of high 228 humidity. 229 NOTE 3 To withstand the effects of high humidity and occasional condensation, such as breakdown of in-230 sulation or corrosion of metallic parts, indoor fuses designed for such conditions and tested accordingly or 231 outdoor fuses are an alternative. 232 NOTE 4 Condensation is prevented by special design of the building or housing, by suitable ventilation and 233 heating of the station or by the use of dehumidifying equipment. 234 e) Vibrations due to causes external to fuses or earth tremors are negligible. 235 In addition, for outdoor installations, 236 f) account should be taken of the presence of condensation or rain and rapid temperature 237 changes; 238 g) the wind pressure does not exceed 700 Pa (corresponding to 34 m/s wind speed); 239 h) the solar radiation does not exceed 1,0 kW/m2. 240 Applications involving fuse-links in enclosures (fuse enclosure packages) typically satisfy the 241 requirements of “normal service conditions” because the ambient temperature (the 242 temperature outside the enclosure) meets the temperatures in a) of this subclause. However, 243 in an enclosure, surrounding temperatures (see 3.3.11) above 40 °C are to be expected and 244 additional considerations may apply regarding assigning a current carrying capability to the 245 device (see 4.2.4, 4.2.5, 4.2.9.2 and IEC/TR 62655:2013). 246 For certain fuse-links and applications in enclosures additional tests may be required as 247 covered in this standard in Annex E.

248 2.2 Special service conditions 249 2.2.1 General 250 By agreement between the manufacturer and the user, high-voltage fuses may be used under 251 conditions different from the normal service conditions given in 2.1. For any special service 252 condition, the manufacturer shall be consulted. 253 2.2.2 Altitude 254 For installations at an altitude higher than 1 000 m, the required rated insulation withstand 255 level of external insulation shall be determined by multiplying the needed insulation levels at 256 the service location by an altitude correction factor, Ka (> 1) given in column (2) of Table 1. 257 The dielectric withstand voltages of a fuse at a particular altitude may be determined by 258 multiplying its rated insulation withstand levels by 1/Ka (< 1), given in column (3) of Table 1. 259 For altitudes between 1 000 m and 1 500 m and between 1 500 m and 3 000 m, the correction 260 factors may be obtained by linear interpolation between the values in Table 1. 261 oSIST prEN IEC 60282-1:2018

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32A/341/CDV Table 1 – Altitude correction factors – Dielectric withstand
262 Maximum altitude m

(1) Correction factor for withstand voltages (Ka) (2) Correction factor applied to rated withstand voltages (1/Ka)

(3)
1 000
1 500
3 000
1,0
1,05
1,25
1,0
0,95

0,80 Where the dielectric characteristics are identical at any altitude, no special precautions need 263 to be taken. 264 The current-carrying capability of a fuse may be determined for altitudes exceeding 1 000 m 265 by applying the appropriate factors given in Table 2, column (2) to the rated current or 266 allowable continuous current of the fuse.

267 For altitudes between 1 000 m and 1 500 m and between 1 500 m and 3 000 m, the correction 268 factors may be obtained by linear interpolation between the values in Table 2. 269 Table 2 – Altitude correction factors – Current-carrying capability

270 Maximum altitude m (1) Correction factor for current-carrying capability (2) 1 000 1 500 3 000

1,0
0,99
0,96

271 2.3 Environmental behaviour 272 Fuses complying with this standard are inert devices during normal service. It is also a 273 requirement of 5.1.3 that no significant external emission takes place. Therefore, they are 274 regarded as environmentally safe devices in service and operation. 275 3 Definitions 276 For the purposes of this document, the following terms and definitions apply. 277 ISO and IEC maintain terminological databases for use in standardization at the following 278 addresses:

279 • IEC Electropedia: available at http://www.electropedia.org/ 280 • ISO Online browsing platform: available at http://www.iso.org/obp

281
282 3.1 Electrical characteristics 283 3.1.1

284 rated value 285 value of a quantity used for specification purposes, established for a specified set of operating 286 conditions of a component, device, equipment, or system

287 NOTE 1 to entry: Examples of rated values usually stated for fuses include, voltage, current and breaking current. 288 [SOURCE: IEC 60050-441:2000, 441-18-35, modified

s “used for specification purposes” and 289 “system” added] 290 oSIST prEN IEC 60282-1:2018

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32A/341/CDV 3.1.2
291 rating 292 set of rated values and operating conditions
293 [SOURCE: IEC 60050-441:2000, 441-18-36] 294 3.1.3

295 prospective current (of a circuit and with respect to a fuse) 296 current that would flow in the circuit if the fuse were replaced by a conductor of negligible 297 impedance

298 NOTE 1 to entry:

For the method to evaluate and to express the prospective current, see 6.6.2.1 and 6.6.2.2. 299 [SOURCE: IEC 60050-441:2000, 441-17-01, modified

s “each pole of the switching device or” 300 has been deleted and “is to be specified in the relevant publications” has been deleted and 301 “see 6.6.2.1 and 6.6.2.2” has been added.] 302 3.1.4

303 prospective peak current 304 peak value of a prospective current during the transient period following initiation 305 NOTE 1 to entry:

The definition assumes that the current is made by an ideal switching device, i.e. with instan-306 taneous transition from infinite to zero impedance. For circuits where the current can follow several different paths, 307 for example polyphase circuits, it further assumes that the current is made simultaneously in all poles, even if only 308 the current in one pole is considered. 309 [SOURCE: IEC 60050-441:2000, 441-17-02] 310 3.1.5

311 prospective breaking current 312 the RMS value of the AC component of the prospective current, evaluated at a specified time

313 NOTE 1 to entry:
This specified time is given in 6.6.2.3.
314 3.1.6

315 breaking capacity 316 value of prospective current that a fuse-link is capable of breaking at a stated voltage under 317 prescribed conditions of use and behaviour 318 [SOURCE: IEC 60050-441:2000, 441-17-08, modified − “switching device or a fuse” replaced 319 with “fuse-link” and Notes removed] 320 3.1.7

321 cut-off current; 322 let-through current

323 maximum instantaneous value of current attained during the breaking operation of a fuse

324 NOTE 1 to entry: This concept is of particular importance when the fuse operates in such a manner that the 325 prospective peak current of the circuit is not reached. 326 [SOURCE: IEC 60050-441:2000, 441-17-12, modified − “a switching device or” deleted] 327

328 3.1.8

329 pre-arcing time; 330 melting time 331 interval of time between the beginning of a current large enough to cause a break in the fuse 332 element(s) and the instant when an arc is initiated

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