1、 IEC 60269-2 Edition 5.0 2013-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage fuses Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) Examples of standardized systems of fuses A to K Fusibles basse tension Partie 2: Exigen
2、ces supplmentaires pour les fusibles destins tre utiliss par des personnes habilites (fusibles pour usages essentiellement industriels) Exemples de systmes de fusibles normaliss A K IEC60269-2:2013 colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights
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16、 Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60269-2 Edition 5.0 2013-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage fuses Part 2: Supplementary requirements for fuses for use
17、 by authorized persons (fuses mainly for industrial application) Examples of standardized systems of fuses A to K Fusibles basse tension Partie 2: Exigences supplmentaires pour les fusibles destins tre utiliss par des personnes habilites (fusibles pour usages essentiellement industriels) Exemples de
18、 systmes de fusibles normaliss A K INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XH ICS 29.120.50 PRICE CODE CODE PRIX ISBN 978-2-8322-0898-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique In
19、ternationale 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 agr. colourinside 2 60269-2 IEC:2013 CONTENTS FOREWORD . 16 INTRODUCTION . 18 1 General scope 19 1.1 Scope 19
20、 1.2 Normative references 20 Fuse system A Fuses with fuse-links with blade contacts (NH fuse system) 21 1 General 21 1.1 Scope 21 2 Terms and definitions . 21 3 Conditions for operation in service 22 4 Classification 22 5 Characteristics of fuses 22 5.2 Rated voltage 22 5.3.1 Rated current of the f
21、use-link. 22 5.3.2 Rated current of the fuse-holder 22 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder . 22 5.6 Limits of time-current characteristics . 22 5.6.1 Time-current characteristics, time-current zones and overload curves . 22 5.6.2 Convent
22、ional times and currents 22 5.6.3 Gates 23 5.7.2 Rated breaking capacity 23 6 Markings 23 6.1 Markings of fuse-holders . 23 6.2 Markings of fuse-links 24 7 Standard conditions for construction . 24 7.1 Mechanical design . 24 7.1.2 Connections, including terminals . 24 7.1.3 Fuse-contacts 25 7.1.6 Co
23、nstruction of fuse-bases 25 7.1.7 Construction of a fuse-link . 25 7.2 Insulating properties and suitability for insulation 26 7.7 I2t characteristics 26 7.8 Overcurrent discrimination of fuse-links . 27 7.9 Protection against electric shock . 27 8 Tests 28 8.1.4 Arrangement of the fuse and dimensio
24、ns . 28 8.1.6 Testing of fuse-holders 28 8.2.4 Acceptability of test results 29 8.2.5 Resistance to tracking . 29 8.3 Verification of temperature rise and power dissipation . 29 8.3.1 Arrangement of the fuse 29 8.3.2 Measurement of the temperature rise 29 8.5.5 Test method 30 60269-2 IEC:2013 3 8.5.
25、8 Acceptability of test results 31 8.7.4 Verification of overcurrent discrimination . 31 8.9 Verification of resistance to heat . 32 8.9.1 Fuse-base . 33 8.9.2 Fuse-links with gripping-lugs of moulded material or of metal fixed in moulded material . 33 8.10 Verification of non-deterioration of conta
26、cts . 34 8.10.1 Arrangement of the fuse 34 8.10.2 Test method 36 8.10.3 Acceptability of test results 37 8.11 Mechanical and miscellaneous tests 39 FIGURES 42 Annex AA (informative) Special test for cable overload protection 61 AA.1 Arrangement of the fuse 61 AA.2 Test method and acceptability of te
27、st results . 61 Fuse system B Fuses with striker fuse-links with blade contacts (NH fuse system) . 62 1 General 62 1.1 Scope 62 2 Terms and definitions . 62 3 Conditions for operation in service 62 4 Classification 62 5 Characteristics of fuses 62 5.2 Rated voltage 62 5.3.1 Rated current of the fuse
28、-link. 63 5.3.2 Rated current of the fuse-holder 63 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder . 63 5.6 Limits of time-current characteristics . 63 5.7.2 Rated breaking capacity 63 6 Markings 63 7 Standard conditions for construction . 63 7.1 M
29、echanical design . 63 7.1.2 Connections, including terminals . 63 7.1.3 Fuse-contacts 63 7.1.7 Construction of a fuse-link . 64 7.2 Insulating properties and suitability for insulation 64 7.7 I2t characteristics 64 7.8 Overcurrent discrimination of “gG“ fuse-links . 64 7.9 Protection against electri
30、c shock . 64 8 Tests 64 8.1.6 Testing of fuse-holders 64 8.3 Verification of temperature rise and power dissipation . 64 8.7.4 Verification of overcurrent discrimination . 65 8.9 Verification of resistance to heat . 65 8.9.1 Fuse-base . 65 4 60269-2 IEC:2013 FIGURES 67 Fuse system C Fuse-rails (NH f
31、use system) . 74 1 General 74 1.1 Scope 74 2 Terms and definitions . 74 3 Conditions for operation in service 74 4 Classification 74 5 Characteristics of fuses 74 5.2 Rated voltage 74 5.3.2 Rated current 74 5.5.1 Rated acceptable power dissipation . 74 6 Markings 75 7 Standard conditions for constru
32、ction . 75 7.1 Mechanical design . 75 7.1.2 Connections, including terminals . 75 7.2 Insulating properties 75 8 Tests 75 8.1.6 Testing of fuse-holders 75 8.3 Verification of temperature rise and power dissipation . 76 8.3.1 Arrangement of the fuse 76 8.9 Verification of resistance to heat . 77 8.9.
33、1 Fuse-base . 77 8.10 Verification of non-deterioration of contacts . 77 8.10.1 Arrangement of the fuse 77 FIGURES 79 Fuse system D Fuse-bases for busbar mounting (40 mm system) (NH fuse system) . 84 1 General 84 1.1 Scope 84 2 Terms and definitions . 84 3 Conditions for operation in service 84 4 Cl
34、assification 84 5 Characteristics of fuses 84 5.2 Rated voltage 84 5.3.2 Rated current 85 5.5.2 Rated acceptable power dissipation of tandem fuse-bases 85 6 Markings 85 7 Standard conditions for construction . 85 7.1 Mechanical design . 85 7.1.2 Connections, including terminals . 85 7.1.5 Constructi
35、on of a fuse-base for busbar mounting . 86 7.2 Insulating properties and suitability for insulation 86 8 Tests 86 60269-2 IEC:2013 5 8.3 Verification of temperature rise and power dissipation . 86 8.3.1 Arrangement of the fuse 86 8.9.1 Fuse-base . 87 8.10 Verification of non-deterioration of contact
36、s . 87 8.10.1 Arrangement of the fuse 87 8.10.2 Test method 88 8.11 Mechanical and miscellaneous tests 88 FIGURES 89 Fuse system E Fuses with fuse-links for bolted connections (BS bolted fuse system) . 96 1 General 96 1.1 Scope 96 2 Terms and definitions . 96 3 Conditions for operation in service 96
37、 4 Classification 96 5 Characteristics of fuses 96 5.3.1 Rated current of the fuse-link. 96 5.3.2 Rated current of the fuse-holder 96 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder . 97 5.6 Limits of time-current characteristics . 97 5.6.1 Time-cur
38、rent characteristics, time-current zones and overload curves . 97 5.6.2 Conventional times and currents 97 5.6.3 Gates 97 5.7.2 Rated breaking capacity 97 6 Markings 97 6.1 Markings of fuse-holders . 98 6.2 Markings of fuse-links 98 7 Standard conditions for construction . 98 7.1 Mechanical design .
39、 98 7.1.2 Connections including terminals 98 7.2 Insulating properties and suitability for insulation 98 7.9 Protection against electric shock . 98 8 Tests 98 8.3 Verification of temperature rise and power dissipation . 98 8.3.1 Arrangement of the fuse 98 8.3.3 Measurement of the power dissipation o
40、f the fuse-link . 98 8.4 Verification of operation 99 8.4.1 Arrangement of the fuse 99 8.5 Verification of breaking capacity 99 8.5.1 Arrangement of the fuse 99 8.5.8 Acceptability of test results 99 8.9 Verification of resistance to heat . 99 8.10 Verification of non-deterioration of contacts . 99
41、8.10.1 Arrangement of the fuse 99 8.10.2 Test method 99 6 60269-2 IEC:2013 8.10.3 Acceptability of the results . 100 8.11 Mechanical and miscellaneous tests 100 FIGURES 101 Fuse system F Fuses with fuse-links having cylindrical contact caps (NF cylindrical fuse system) . 110 1 General 110 1.1 Scope
42、110 2 Terms and definitions . 110 3 Conditions for operation in service 110 4 Classification 110 5 Characteristics of fuses 110 5.2 Rated voltage 110 5.3.1 Rated current of the fuse-link. 111 5.3.2 Rated current of the fuse-holder 111 5.5 Rated power dissipation of a fuse-link and rated acceptable p
43、ower dissipation of a fuse-holder . 111 5.6 Limits of time-current characteristics . 112 5.6.1 Time-current characteristics, time-current zones and overload curves . 112 5.6.2 Conventional times and currents 112 5.6.3 Gates 113 5.7.2 Rated breaking capacity 113 6 Markings 113 6.1 Markings of fuse-ho
44、lders . 113 6.2 Markings of fuse-links 114 7 Standard conditions for construction . 114 7.1 Mechanical design . 114 7.1.2 Connections including terminals 114 7.2 Insulating properties and suitability for insulation 114 7.7 I2t characteristics 115 7.8 Overcurrent discrimination of “gG“ fuse-links . 1
45、15 7.9 Protection against electric shock . 115 8 Tests 115 8.1.6 Testing of fuse-holders 116 8.3.1 Arrangement of the fuse 116 8.7.4 Verification of overcurrent discrimination . 118 8.9 Verification of resistance to heat . 119 8.10 Verification of non-deterioration of contacts . 119 8.10.1 Arrangeme
46、nt of the fuse 119 8.10.2 Test method 119 8.10.3 Acceptability of test results 120 FIGURES 121 Fuse system G Fuses with fuse-links with offset blade contacts (BS clip-in fuse system) . 125 1 General 125 1.1 Scope 125 60269-2 IEC:2013 7 2 Terms and definitions . 125 3 Conditions for operation in serv
47、ice 125 4 Classification 125 5 Characteristics of fuses 125 5.2 Rated voltage 126 5.3.1 Rated current of the fuse-link. 126 5.3.2 Rated current of the fuse-holder 126 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder . 126 5.6.1 Time-current character
48、istics, time-current zones . 126 5.6.2 Conventional times and currents 126 5.6.3 Gates 126 5.7.2 Rated breaking capacity 127 6 Markings 127 6.1 Markings of fuse-holders . 127 6.2 Markings of fuse-links 127 7 Standard conditions for construction . 127 7.1 Mechanical design . 127 7.1.2 Connections inc
49、luding terminals 127 7.2 Insulating properties and suitability for insulation 128 7.7 I2t characteristics 128 7.9 Protection against electric shock . 128 8 Tests 128 8.3.3 Measurement of the power dissipation of the fuse-link . 128 8.4.1 Arrangement of the fuse 129 8.5.1 Arrangement of the fuse 129 8.7.4 Verification of overcurrent discrimination . 129 8.9 Verification of resistance to heat . 129 8.10 Verification of non-deterioration
