1、 IEC 60269-3Edition 4.0 2010-05INTERNATIONAL STANDARD NORME INTERNATIONALELow-voltage fuses Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications) Examples of standardized systems of fuses A to F Fusibles basse tension Partie 3
2、: Exigences supplmentaires pour les fusibles destins tre utiliss par des personnes non qualifies (fusibles pour usages essentiellement domestiques et analogues) Exemples de systmes de fusibles normaliss A F IEC60269-3:2010 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerla
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17、 03 00 IEC 60269-3Edition 4.0 2010-05INTERNATIONAL STANDARD NORME INTERNATIONALELow-voltage fuses Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications) Examples of standardized systems of fuses A to F Fusibles basse tension Pa
18、rtie 3: Exigences supplmentaires pour les fusibles destins tre utiliss par des personnes non qualifies (fusibles pour usages essentiellement domestiques et analogues) Exemples de systmes de fusibles normaliss A F INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XG
19、ICS 29.120.50 PRICE CODECODE PRIXISBN 978-2-88910-088-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60269-3 IEC:2010 CONTENTS FOREWORD.12 INTRODUCTION.14 1 General scope 15 1.2 Normative references 15 Fuse syst
20、em A D type fuse system .16 1 General 16 1.1 Scope16 2 Terms and definitions .16 3 Conditions for operation in service16 4 Classification16 5 Characteristics of fuses 16 5.2 Rated voltage16 5.3.1 Rated current of the fuse-link.17 5.3.2 Rated current of the fuse-holder 17 5.3.3 Rated current of the g
21、auge-piece.17 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder .17 5.6 Limits of time-current characteristics .17 5.6.1 Time-current characteristics, time-current zones and overload curves .17 5.6.2 Conventional times and currents17 5.6.3 Gates 18 5.
22、7 Breaking range and breaking capacity.18 5.7.2 Rated breaking capacity 18 6 Markings 18 6.4 Marking of the gauge-pieces .18 7 Standard conditions for construction.19 7.1 Mechanical design.19 7.1.2 Connections including terminals 19 7.1.3 Fuse-contacts19 7.1.4 Construction of a gauge-piece .19 7.1.6
23、 Construction of a fuse-carrier 20 7.1.7 Construction of a fuse-link .20 7.1.8 Non-interchangeability.20 7.1.9 Construction of a fuse-base.21 7.2 Insulating properties and suitability for isolation 21 7.3 Temperature rise, power dissipation of the fuse-link and acceptable power dissipation of the fu
24、se-holder.22 7.7 I2t characteristics 22 7.7.1 Pre-arcing I2t values22 7.7.2 Operating I2t values.23 7.8 Overcurrent discrimination of “gG“ fuse-links.23 7.9 Protection against electric shock .23 8 Tests 23 8.1.4 Arrangement of the fuse and dimensions .24 8.2 Verification of the insulating properties
25、 and the suitability for isolation 25 60269-3 IEC:2010 3 8.2.1 Arrangement of the fuse-holder .25 8.2.6 Creepage distances, clearances and distances through sealing compound25 8.3 Verification of temperature rise and power dissipation.25 8.3.1 Arrangement of the fuse 25 8.3.3 Measurement of the powe
26、r dissipation of the fuse-link.26 8.3.5 Acceptability of test results26 8.5.1 Arrangement of the fuse 27 8.5.2 Characteristics of the test circuit27 8.5.5 Test method 27 8.5.8 Acceptability of test results27 8.7.4 Verification of overcurrent discrimination .27 8.9 Verification of resistance to heat
27、.28 8.9.1 Fuse-base .28 8.9.2 Fuse-carrier.29 8.10 Verification of non-deterioration of contacts.30 8.10.1 Arrangement of the fuse 30 8.10.2 Test method 30 8.10.3 Acceptability of test results31 8.11 Mechanical and miscellaneous tests31 8.11.1 Mechanical strength 31 Annex AA (informative) Special te
28、st for cable overload protection(for fuse system A)66 Fuse system B Cylindrical fuses (NF cylindrical fuse system)67 1 General 67 1.1 Scope67 2 Terms and definitions .67 3 Conditions for operation in service67 4 Classification68 5 Characteristics of fuses 68 5.2 Rated voltage68 5.3.1 Rated current o
29、f the fuse-link.68 5.3.2 Rated current of the fuse-holder 68 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder .68 5.6.2 Conventional times and currents68 5.6.3 Gates 69 5.7.2 Rated breaking capacity 69 6 Markings 69 7 Standard conditions for construc
30、tion.69 7.1 Mechanical design.69 7.1.2 Connections including terminals 69 7.1.6 Construction of a fuse-carrier 70 7.1.7 Construction of a fuse-link .70 7.1.8 Non-interchangeability.70 7.1.9 Construction of a fuse-base.70 7.2 Insulating properties and suitability for isolation 71 4 60269-3 IEC:2010 7
31、.3 Temperature rise, power dissipation of the fuse-link and acceptable power dissipation of the fuse-holder.72 7.7 I2t characteristics 72 7.7.1 Pre-arcing I2t values72 7.7.2 Operating I2t values.72 7.8 Overcurrent discrimination of “gG“ fuse-links.72 7.9 Protection against electric shock .72 8 Tests
32、 73 8.1.6 Testing of fuse-holders 73 8.3.1 Arrangement of the fuse 73 8.3.3 Measurement of the power dissipation of the fuse-link.74 8.4 Verification of operation 75 8.4.1 Arrangement of the fuse 75 8.5 Verification of the breaking capacity75 8.5.1 Arrangement of the fuse 75 8.5.5 Test method 76 8.5
33、.8 Acceptability of test results76 8.7.4 Verification of overcurrent discrimination .76 8.8 Verification of the degree of protection of enclosures 76 8.8.1 Verification of protection against electric shock .76 8.9 Verification of resistance to heat .76 8.10 Verification of non-deterioration of conta
34、cts.77 8.10.1 Arrangement of the fuse 77 8.10.2 Test method 77 8.10.3 Acceptability of test results77 8.12 Verification of the reliability of terminals 81 Fuse system C Cylindrical fuses (BS cylindrical fuse system) .90 1 General 90 1.1 Scope90 2 Terms and definitions .90 3 Conditions for operation
35、in service90 4 Classification90 5 Characteristics of fuses 91 5.2 Rated Voltage .91 5.3 Rated current 91 5.3.1 Rated current of the fuse-link.91 5.3.2 Rated current of the fuse-holder 91 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder .91 5.6 Limits
36、 of time-current characteristics .91 5.6.1 Time-current characteristics, time-current curves and overload curves .91 5.6.2 Conventional times and currents91 5.7 Breaking range and breaking capacity.91 5.7.2 Rated breaking capacity 91 6 Markings 92 7 Standard conditions for construction.92 60269-3 IE
37、C:2010 5 7.1 Mechanical design.92 7.1.2 Connections including terminals 92 7.1.6 Construction of a fuse-carrier 92 7.1.7 Construction of a fuse-link .92 7.1.8 Non-interchangeability.92 7.1.9 Construction of a fuse-base.92 7.2 Insulating properties and suitability for isolation 92 7.3 Temperature ris
38、e, power dissipation of the fuse-link and acceptable power dissipation of the fuse-holder.93 7.7 I2t characteristics 93 7.9 Protection against electric shock .93 8 Tests 93 8.1 General .93 8.1.4 Arrangement of the fuse 93 8.3 Verification of temperature rise and power dissipation.93 8.3.1 Arrangemen
39、t of the fuse 93 8.3.3 Measurement of the power dissipation of the fuse-link.93 8.4 Verification of operation 93 8.4.1 Arrangement of fuse 93 8.5 Verification of breaking capacity93 8.5.1 Arrangement of the fuse 93 8.5.2 Characteristics of the test circuit93 8.5.5 Test method 94 8.5.8 Acceptability
40、of test results94 8.10 Verification of non-deterioration of contacts.94 8.10.1 Arrangement of the fuse 94 8.10.2 Test method 94 8.10.3 Acceptability of test results94 Fuse system D Cylindrical fuses (Italian cylindrical fuse system) 104 1 General 104 1.1 Scope104 2 Terms and definitions .104 3 Condi
41、tions for operation in service104 4 Classification104 5 Characteristics of fuses 104 5.3.1 Rated current of the fuse-link.104 5.3.2 Rated current of the fuse-holder 105 5.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder .105 5.6 Limits of time-current
42、characteristics .106 5.6.1 Time-current characteristics, time-current zones and overload curves .106 5.6.2 Conventional times and currents106 5.6.3 Gates 106 5.7.2 Rated breaking capacity 106 6 Markings 107 7 Standard conditions for construction.107 7.1 Mechanical design.107 6 60269-3 IEC:2010 7.1.2
43、 Connections including terminals 107 7.1.6 Construction of a fuse-carrier 107 7.1.7 Construction of a fuse-link .107 7.1.8 Non-interchangeability.108 7.1.9 Construction of a fuse-base.108 7.2 Insulating properties and suitability for isolation 108 7.3 Temperature rise, power dissipation of the fuse-
44、link and acceptable power dissipation of the fuse-holder.109 7.7 I2t characteristics 109 7.7.1 Minimum pre-arcing I2t values at 0,01 s.109 7.7.2 Maximum operating I2t values at 0,01 s .110 7.9 Protection against electric shock .110 8 Tests 110 8.1.6 Testing of the fuse-holder110 8.3 Verification of
45、temperature rise and power dissipation.111 8.3.1 Arrangement of the fuse 111 8.3.3 Measurement of the power dissipation of the fuse-link.111 8.4 Verification of operation 112 8.4.1 Arrangement of the fuse 112 8.5 Verification of the breaking capacity112 8.5.1 Arrangement of the fuse 112 8.5.5 Test m
46、ethod 112 8.5.8 Acceptability of test results112 8.7.4 Verification of discrimination112 8.9 Verification of resistance to heat .112 8.9.1 Test in heating cabinet 112 8.9.2 Ball-pressure test 113 8.10 Verification of non-deterioration of contacts.113 8.10.1 Arrangement of the fuse 113 8.10.2 Test me
47、thod 113 8.10.3 Acceptability of test results114 8.11 Mechanical and miscellaneous tests114 Fuse system E Pin-type fuses .124 1 General 124 1.1 Scope124 2 Terms and definitions .124 2.3 Characteristic quantities124 3 Conditions for operation in service125 4 Classification125 5 Characteristics of fus
48、es 125 5.3.3 Rated current of the gauge-piece.125 5.5 Rated power dissipation of the fuse-link 125 5.6 Limits of time-current characteristics .125 5.6.2 Conventional times and currents125 5.6.3 Gates 125 5.7.2 Rated breaking capacity 126 6 Markings 126 60269-3 IEC:2010 7 6.1 Markings of fuse-holders
49、 .126 6.2 Markings of fuse-links126 6.4 Markings of the gauge-pieces126 7 Standard conditions for construction.126 7.1.4 Construction of the gauge-piece 126 7.1.6 Construction of a fuse-carrier 126 7.1.7 Construction of a fuse-link .127 7.1.8 Non-interchangeability.127 7.1.9 Construction of a fuse-base.127 7.3 Temperature rise, power dissipation of the fuse-link and acceptable power dissipation of the fuse-holder.1
