1、 IEC 61558-1 Edition 3.0 2017-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Safety of transformers, reactors, power supply units and combinations thereof Part 1: General requirements and tests Scurit des transformateurs, bobines dinductance, blocs dalimentation et des combinaisons de ces lments Par
2、tie 1: Exigences gnrales et essais IEC 61558-1:2017-09(en-fr) GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utiliz
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20、, reactors, power supply units and combinations thereof Part 1: General requirements and tests Scurit des transformateurs, bobines dinductance, blocs dalimentation et des combinaisons de ces lments Partie 1: Exigences gnrales et essais INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECH
21、NIQUE INTERNATIONALE ICS 29.180 ISBN 978-2-8322-4750-1 GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from
22、an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 61558-1:2017 IEC 2017 CONTENTS FOREWORD . 9 INTRODUCTION . 11 1 Scope 14 2 Normative references 16 3 Terms and definitions 19 3.1 Transformers 20 3.2 General terms . 23 3
23、.3 Operations and protections . 24 3.4 Circuits and windings 26 3.5 Ratings . 27 3.6 No-load values 29 3.7 Insulation 29 3.8 Touch current and protective earthing conductor current . 33 4 General requirements 33 5 General notes on tests 34 6 Ratings 36 7 Classification . 36 8 Marking and other infor
24、mation . 37 9 Protection against electric shock . 43 9.1 General . 43 9.2 Protection against contact with hazardous-live-parts . 44 9.2.1 Determination of hazardous-live-parts . 44 9.2.2 Accessibility to hazardous-live-parts 44 9.2.3 Accessibility to non hazardous-live-part . 47 9.3 Protection again
25、st hazardous electrical discharge . 47 10 Change of input voltage setting . 47 11 Output voltage and output current under load 48 12 No-load output voltage 49 13 Short-circuit voltage . 49 14 Heating 49 14.1 General requirements . 49 14.1.1 Temperature-rise test 49 14.1.2 Alternative temperature-ris
26、e test 51 14.1.3 Determination of steady-state conditions . 54 14.2 Application of 14.1 or 14.3 according to the insulation system. 55 14.3 Accelerated ageing test for undeclared class of insulation system 56 14.3.1 General . 56 14.3.2 Heat run 56 14.3.3 Vibration 57 14.3.4 Moisture treatment . 57 1
27、4.3.5 Measurements . 57 15 Short circuit and overload protection 57 15.1 General requirements . 57 15.1.1 Short circuit and overload test method . 57 IEC 61558-1:2017 IEC 2017 3 15.1.2 Alternative short circuit and overload test method 60 15.2 Inherently short-circuit proof transformers . 60 15.3 No
28、n-inherently short-circuit proof transformers 60 15.4 Non-short-circuit proof transformers 61 15.5 Fail-safe transformers . 61 16 Mechanical strength 62 16.1 General . 62 16.2 Stationary transformers . 62 16.3 Portable transformers (except portable transformers with integral pins for introduction in
29、 socket-outlet in the fixed wiring) . 63 16.4 Portable transformers provided with integral pins for introduction in socket- outlets of the fixed wiring 63 16.4.1 General requirements 63 16.4.2 Portable transformers provided with integral pins according to EN 50075 (IEC plug type C) for introduction
30、in socket-outlets of the fixed wiring 64 16.5 Additional requirements for transformers to be used in vehicles and railway applications 65 16.5.1 Transformers to be used in vehicles and railway applications 65 16.5.2 Test requirements for the transportation of transformers 66 17 Protection against ha
31、rmful ingress of dust, solid objects and moisture . 67 17.1 Degrees of protection provided by enclosures (IP code) 67 17.1.1 General requirements 67 17.1.2 Tests on transformers with enclosure 68 17.2 Humidity treatment 70 18 Insulation resistance, dielectric strength and leakage current 71 18.1 Gen
32、eral . 71 18.2 Insulation resistance . 71 18.3 Dielectric strength test 72 18.4 Insulation between and within windings . 74 18.5 Touch current and protective earthing conductor current . 74 18.5.1 General . 74 18.5.2 Touch current 75 18.5.3 Protective earthing conductor current 76 19 Construction 77
33、 19.1 General construction . 77 19.1.1 General . 77 19.1.2 Auto-transformers 77 19.1.3 Separating transformers 78 19.1.4 Isolating transformers and safety isolating transformers 79 19.2 Flammability of materials 81 19.3 Short-circuit characteristics of portable transformers . 81 19.4 Class II transf
34、ormer contact prevention of accessible conductive parts . 81 19.5 Class II transformer insulation reassembling after service . 81 19.6 Loosening of wires, screws or similar parts . 82 19.7 Resistor or capacitor connection with accessible conductive parts 82 19.8 Bridging of separated conductive part
35、s by resistors or capacitors . 82 19.9 Insulating material separating input and output windings . 83 19.10 Accidental contact protection against hazardous-live-parts provided by isolating coating 83 4 IEC 61558-1:2017 IEC 2017 19.11 Insulating material of handles, operating levers, knobs and similar
36、 parts. 84 19.12 Winding construction . 84 19.13 Fixing of handles, operating levers and similar parts . 88 19.14 Fixing of covers providing protection against electric shock 88 19.15 Strain on fixed socket-outlets caused by pin-transformers connection . 89 19.16 Portable transformers for use in irr
37、egular or harsh conditions . 89 19.17 Drain hole of transformers protected against ingress of water . 89 19.18 Plug connected transformers protected against ingress of water . 89 19.19 Flexible cable or flexible cord connection for class I portable transformers . 89 19.20 SELV- and PELV-circuit sepa
38、ration of live parts 89 19.21 Protection against contact for FELV-circuit 90 19.22 Protective earthing regarding class II transformers . 90 19.23 Protective earthing regarding class III transformers 91 20 Components 91 21 Internal wiring 96 22 Supply connection and other external flexible cables or
39、cords . 96 23 Terminals for external conductors 103 24 Provisions for protective earthing. 104 25 Screws and connections 106 26 Creepage distances, clearances and distances through insulation . 108 26.1 General . 108 26.2 Creepage distances and clearances 109 26.2.1 General . 109 26.2.2 Windings cov
40、ered with adhesive tape 109 26.2.3 Uncemented insulationing parts . 109 26.2.4 Cemented insulating parts . 109 26.2.5 Enclosed parts (e.g. by impregnation or potting) 110 26.3 Distance through insulation . 111 27 Resistance to heat, fire and tracking 122 27.1 General . 122 27.2 Resistance to heat 12
41、2 27.2.1 General . 122 27.2.2 External accessible parts . 122 27.2.3 Internal parts . 123 27.3 Resistance to abnormal heat under fault conditions 123 27.4 Resistance to fire 124 27.4.1 General . 124 27.4.2 External accessible parts . 125 27.4.3 Internal parts . 125 27.5 Resistance to tracking . 126
42、28 Resistance to rusting . 126 Annex A (normative) Measurement of creepage distances and clearances. 127 Annex B (normative) Testing a series of transformers 131 B.1 General . 131 B.2 Requirements . 131 B.3 Constructional inspection 132 Annex C (void) 133 IEC 61558-1:2017 IEC 2017 5 Annex D (void) 1
43、34 Annex E (normative) Glow-wire test . 135 E.1 General . 135 E.2 Severity 135 E.3 Conditioning 135 E.4 Test procedure 135 Annex F (normative) Requirements for manually operated switches which are parts of transformers assembly 136 F.1 General . 136 F.2 Switches tested as a separate component 136 F.
44、3 Switches tested as part of the transformer 136 Annex G (normative) Tracking test . 139 G.1 General . 139 G.2 Test specimen 139 G.3 Test apparatus 139 G.4 Procedure . 139 Annex H (normative) Electronic circuits 140 H.1 General . 140 H.2 General notes on tests (addition to Clause 5) 140 H.3 Short ci
45、rcuit and overload protection (addition to Clause 15) . 140 H.4 Creepage distances, clearances and distances through insulation (addition to Clause 26) 142 Annex I (informative) Dimensions for rectangular cross-section connectors of transformers, basic dimensions and coordination 144 Annex J (normat
46、ive) Measuring network for touch-currents 146 Annex K (normative) Insulated winding wires . 147 K.1 General . 147 K.2 Type tests . 147 K.2.1 General . 147 K.2.2 Dielectric strength test . 147 K.2.3 Flexibility and adherence . 147 K.2.4 Heat shock 148 K.2.5 Retention of dielectric strength after bend
47、ing . 148 K.3 Testing during manufacturing 149 K.3.1 General . 149 K.3.2 Routine test . 149 K.3.3 Sampling test . 149 Annex L (normative) Routine tests (production tests) . 150 L.1 General . 150 L.2 Protective earthing continuity test . 150 L.3 Checking of no-load output voltage . 150 L.4 Dielectric
48、 strength test 150 L.5 Checking of protective devices mounting 151 L.6 Visual inspection . 151 L.7 Repetition test after routine dielectric strength test . 151 Annex M (informative) Examples to be used as a guide for 19.1 152 M.1 General . 152 M.2 Coil-former 152 6 IEC 61558-1:2017 IEC 2017 M.2.1 Co
49、ncentric type . 152 M.2.2 Side-by-side type . 153 M.3 Windings . 153 M.3.1 Without screen 153 M.3.2 With screen . 154 Annex N (informative) Examples for checking points of dielectric strength test voltages . 155 Annex O (void) 157 Annex P (informative) Examples for measurement points of creepage distances and clearances 158 Annex Q (informative) Explanation of IP numbers for degrees of protection . 161 Q.1 General . 161 Q.2 Degrees of protection
