1、 IEC 61204-7 Edition 2.0 2016-11 EXTENDED VERSION Low-voltage switch mode power supplies Part 7:Safety requirements IEC 61204-7:2016-11 EXV(en)This Extended version of IEC 61204-7:2016 includes the provisions of the general rules of IEC 62477-1:2012 colourinside THIS PUBLICATION IS COPYRIGHT PROTECT
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11、HNICAL COMMISSION ICS 29.200 ISBN 978-2-8322-3751-9 This Extended version of IEC 61204-7:2016 includes the provisions of the general rules of IEC 62477-1:2012 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized
12、 distributor.colourinside 2 IEC 61204-7:2016 EXV IEC 2016 CONTENTS FOREWORD.9 INTRODUCTION.12 0 Principles of safety.13 0.1 General.13 0.2 Hazards.14 0.2.1 General.14 0.2.2 Electric shock.14 0.2.3 Energy related hazards.15 0.2.4 Fire.15 0.2.5 Heat related hazards.16 0.2.6 Mechanical hazards.16 0.2.7
13、 Chemical hazards.16 0.3 Materials and components.16 1 Scope.17 1.1 Equipment covered by this document.17 1.2 Exclusions.17 1.3 Additional requirements.18 2 Normative references.18 3 Terms and definitions.19 4 Protection against hazards.29 4.1 General.29 4.1.100 Constructions not specifically covere
14、d.30 4.1.101 Orientation during transport and use.30 4.2 Fault and abnormal conditions.30 4.2.100 Application of faults and abnormal conditions.31 4.3 Short circuit and overload protection.32 4.3.1 General.32 4.3.2 Specification of input short-circuit withstand strength and output short circuit curr
15、ent ability.33 4.3.3 Short-circuit coordination(backup protection).34 4.3.4 Protection by several devices.34 4.4 Protection against electric shock.34 4.4.1 General.34 4.4.2 Decisive voltage class.34 4.4.3 Provision for basic protection.37 4.4.4 Provision for fault protection.38 4.4.5 Enhanced protec
16、tion.44 4.4.6 Protective measures.47 4.4.7 Insulation.49 4.4.8 Compatibility with residual current-operated protective devices(RCD).67 4.4.9 Capacitor discharge.67 4.5 Protection against electrical energy hazards.68 4.5.1 Operator access areas.68 4.5.2 Service access areas.69 4.6 Protection against fire and thermal hazards.69 4.6.1 Circuits representing a fire hazard.69 IEC 61204-7:2016 EXV IEC 2016 3 4.6.2 Components representing a fire hazard.69 4.6.3 Fire enclosures.70 4.6.4 Temperature limit
