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1、 AS/NZS 60950.1:2003 (Incorporating Amendment Nos 1, 2 and 3) Australian/New Zealand Standard Information technology equipment Safety Part 1: General requirements (IEC 60950-1:2001, MOD) AS/NZS 60950.1:2003 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 AS/NZS 60950.1:2003 This Joint Austr
2、alian/New Zealand Standard was prepared by Joint Technical Committee TE-001, Safety of Electronic Equipment. It was approved on behalf of the Council of Standards Australia on 25 November 2002 and on behalf of the Council of Standards New Zealand on 24 July 2003. This Standard was published on 15 Se
3、ptember 2003. The following are represented on Committee TE-001: Australian Chamber of Commerce and Industry Australian Communications Authority Australian Electrical and Electronic Manufacturers Association Australian Information Industry Association Consumer Electronics Association of New Zealand
4、Consumer Electronics Suppliers Association Department of Defence, Australia Electrical Compliance Testing Association Electrical Regulatory Authorities Electricity Supply Association of Australia Federation of Australian Commercial Television Stations International Accreditation, New Zealand Institu
5、tion of Radio and Electronics Engineers, Australia Ministry of Economic Development, New Zealand Singtel Optus Telstra Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically rev
6、iewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. De
7、tailed information about joint Australian/New Zealand Standards can be found by visiting the Standards Web Shop at .au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue. Alternatively, both organizations publish an annual printed C
8、atalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective nation
9、al Standards organization. We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand a
10、t the address shown on the back cover. This Standard was issued in draft form for comment as DR 02508. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 AS/NZS 60950.1:2003 (Incorporating Amendment Nos 1, 2 and 3) Australian/New Zealand Standard Information technology equipment Safety Part 1:
11、 General requirements (IEC 60950-1:2001, MOD) COPYRIGHT Standards Australia/Standards New Zealand All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.
12、Jointly published by Standards Australia, GPO Box 476, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439, Wellington 6020 ISBN 0 7337 5454 6 Originated in Australia as AS 32601988. Originated in New Zealand as NZS 6600:1989. Previous edition AS/NZS 60950:2000. AS/NZS 60950:2000 jointly re
13、vised and redesignated as AS/NZS 60950.1:2003. Reissued incorporating Amendment No. 1 (May 2006). Reissued incorporating Amendment No. 2 (February 2008). Reissued incorporating Amendment No. 3 (February 2008). Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 ii PREFACE This Standard was prep
14、ared by the Joint Standards Australia/Standards New Zealand Committee TE-001, Safety of Electronic Equipment, to supersede AS/NZS 60950:2000, Safety of information technology equipment from 1 July 2006. During this time it is anticipated that regulatory authorities will approve information technolog
15、y equipment to either Standard. This Standard incorporates Amendment No. 1 (May 2006), Amendment No. 2 (February 2008) and Amendment No. 3 (February 2008). The changes required by the Amendment are indicated in the text by a marginal bar and amendment number against the clause, note, table, figure o
16、r part thereof affected. The objective of this Standard is to establish minimum safety requirements for the design, construction and operation of mains-powered or battery-powered information technology equipment. It sets out requirements intended to ensure the safety of the operator and other people
17、 who may come into contact with the equipment and, where specifically stated, for service personnel and which may be used as the basis for approval for Australia and New Zealand. This Standard forms the first edition of AS/NZS 60950.1 Information technology equipment Safety Part 1: General requireme
18、nts. This Standard is an adoption with national variations and contains the full text of IEC 60950-1:2001, Information technology equipmentSafety - Part 1: General requirements, including Corrigendum 1 (October 2002) and has been varied as indicated to take account of Australian/New Zealand conditio
19、ns. Variations to IEC 60950-1:2001 are indicated at the appropriate places throughout this standard. Strikethrough (example) identifies IEC text, tables and figures which, for the purposes of this Australian/New Zealand Standard, are deleted. Where text, tables or figures are added, each is set in i
20、ts proper place and identified by shading (example). Added figures are not themselves shaded, but are identified by a shaded border. The variations to Clauses 6.2.2, 6.2.2.1 and 6.2.2.2 apply only in Australia and are marked by A in the right hand margin. For New Zealand, the text of the IEC Standar
21、d applies and is marked by NZ in the right hand margin. Variations made to IEC 60950-1:2001 form the Australian/New Zealand variations for the purposes of the CB scheme for recognition of testing to standards for safety of electrical equipment. These variations have been incorporated in the body of
22、the standard. They are listed in Annex ZZ for easy reference. In this Standard, the following print types are used: requirements proper: in arial type; test specifications: in italic type; explanatory matter: in smaller arial type. terms in SMALL CAPITALS are defined in Clause 1.2. The terms normati
23、ve and informative are used to define the application of the annex to which they apply. A normative annex is an integral part of a standard, whereas an informative annex is only for information and guidance. As this Joint Standard is reproduced from an International Standard, the following applies:
24、(a) The AS/NZS number is shown only on the cover and title page. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 iii (b) The source text this International Standard should read this Australian/New Zealand Standard, and references to relevant IEC Standard should read relevant IEC, Australian
25、 or New Zealand Standard. (c) A full point should be substituted for a comma when referring to a decimal marker. (d) References to International Standards in Annex P and Annex Q should be replaced by references to equivalent Australian or Australian/New Zealand Standards as listed. Australian or Aus
26、tralian/New Zealand Standards that are identical to the International Standard they replace, are appropriately identified. Where no relevant New Zealand or Australian/New Zealand Standard is listed, the referenced Australian Standard is deemed to be appropriate for the purpose in New Zealand. Access
27、ed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 iv CONTENTS Page 0 Principles of safety.xvi 0.1 General principles of safety xvi 0.2 Hazards .xvii 0.2.1 Electric shock.xvii 0.2.2 Energy related hazards . xviii 0.2.3 Fire . xviii 0.2.4 Heat related hazards.xix 0.2.5 Mechanical hazards xix 0.2.6 Ra
28、diation xix 0.2.7 Chemical hazards xx 0.3 Materials and components .xx 1 General 1 1.1 Scope . 1 1.1.1 Equipment covered by this standard 1 1.1.2 Additional requirements 2 1.1.3 Exclusions 2 1.2 Definitions. 3 1.2.1 Equipment electrical ratings 4 1.2.2 Operating conditions . 5 1.2.3 Equipment mobili
29、ty 5 1.2.4 Classes of equipment Protection against electric shock 5 1.2.5 Connection to the supply. 6 1.2.6 Enclosures 7 1.2.7 Accessibility 7 1.2.8 Circuits and circuit characteristics. 8 1.2.9 Insulation 9 1.2.10 Clearance and creepage distances . 10 1.2.11 Components 10 1.2.12 Flammability 11 1.2
30、.13 Miscellaneous . 12 1.3 General requirements . 14 1.3.1 Application of requirements. 14 1.3.2 Equipment design and construction. 14 1.3.3 Supply voltage 14 1.3.4 Constructions not specifically covered. 14 1.3.5 Equivalent materials 14 1.3.6 Orientation during transport and use . 15 1.3.7 Choice o
31、f criteria. 15 1.3.8 Examples mentioned in the standard. 15 1.3.9 Conductive liquids. 15 1.4 General conditions for tests 15 1.4.1 Application of tests 15 1.4.2 Type tests . 15 1.4.3 Test samples 15 1.4.4 Operating parameters for tests 16 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 v Pa
32、ge 1.4.5 Supply voltage for tests. 16 1.4.6 Supply frequency for tests. 17 1.4.7 Electrical measuring instruments. 17 1.4.8 Normal operating voltages 17 1.4.9 Measurement of voltage to earth. 17 1.4.10 Loading configuration of the EUT 18 1.4.11 Power from a telecommunication network . 18 1.4.12 Temp
33、erature measurement conditions. 18 1.4.13 Temperature measurement methods . 19 1.4.14 Simulated faults and abnormal conditions . 19 1.4.15 Compliance by inspection of relevant data 19 1.5 Components . 19 1.5.1 General. 19 1.5.2 Evaluation and testing of components . 20 1.5.3 Thermal controls . 20 1.
34、5.4 Transformers. 20 1.5.5 Interconnecting cables 20 1.5.6 Capacitors in primary circuits 20 1.5.7 Double insulation or reinforced insulation bridged by components. 21 1.5.8 Components in equipment for IT power distribution systems . 21 1.6 Power interface. 22 1.6.1 AC power distribution systems 22
35、1.6.2 Input current . 22 1.6.3 Voltage limit of hand-held equipment 22 1.6.4 Neutral conductor 22 1.7 Markings and instructions . 22 1.7.1 Power rating 23 1.7.2 Safety instructions 24 1.7.3 Short duty cycles. 25 1.7.4 Supply voltage adjustment 25 1.7.5 Power outlets on the equipment 25 1.7.6 Fuse id
36、entification. 26 1.7.7 Wiring terminals 26 1.7.8 Controls and indicators . 27 1.7.9 Isolation of multiple power sources . 28 1.7.10 IT power distribution systems 28 1.7.11 Thermostats and other regulating devices. 28 1.7.12 Language 28 1.7.13 Durability 28 1.7.14 Removable parts. 28 1.7.15 Replaceab
37、le batteries . 28 1.7.16 Operator access with a tool. 29 1.7.17 Equipment for restricted access locations . 29 2 Protection from hazards . 30 2.1 Protection from electric shock and energy hazards . 30 2.1.1 Protection in operator access areas 30 2.1.2 Protection in service access areas 35 2.1.3 Prot
38、ection in restricted access locations 36 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 vi Page 2.2 SELV circuits 36 2.2.1 General requirements 36 2.2.2 Voltages under normal conditions . 36 2.2.3 Voltages under fault conditions . 36 2.2.4 Connection of SELV circuits to other circuits. 37
39、2.3 TNV circuits 38 2.3.1 Limits 38 2.3.2 Separation from other circuits and from accessible parts. 40 2.3.3 Separation from hazardous voltages . 41 2.3.4 Connection of TNV circuits to other circuits. 41 2.3.5 Test for operating voltages generated externally . 42 2.4 Limited current circuits 42 2.4.
40、1 General requirements 42 2.4.2 Limit values. 42 2.4.3 Connection of limited current circuits to other circuits 43 2.5 Limited power sources 43 2.6 Provisions for earthing and bonding 45 2.6.1 Protective earthing 45 2.6.2 Functional earthing . 45 2.6.3 Protective earthing and protective bonding cond
41、uctors 46 2.6.4 Terminals 49 2.6.5 Integrity of protective earthing. 50 2.7 Overcurrent and earth fault protection in primary circuits 51 2.7.1 Basic requirements . 51 2.7.2 Faults not covered in 5.3. 51 2.7.3 Short-circuit backup protection 52 2.7.4 Number and location of protective devices 52 2.7.
42、5 Protection by several devices 53 2.7.6 Warning to service persons. 53 2.8 Safety interlocks . 54 2.8.1 General principles. 54 2.8.2 Protection requirements 54 2.8.3 Inadvertent reactivation. 54 2.8.4 Fail-safe operation 55 2.8.5 Moving parts . 55 2.8.6 Overriding . 55 2.8.7 Switches and relays 55
43、2.8.8 Mechanical actuators 56 2.9 Electrical insulation. 56 2.9.1 Properties of insulating materials 56 2.9.2 Humidity conditioning 57 2.9.3 Grade of insulation 57 2.10 Clearances, creepage distances and distances through insulation 60 2.10.1 General. 60 2.10.2 Determination of working voltage 61 2.
44、10.3 Clearances 62 2.10.4 Creepage distances 68 2.10.5 Solid insulation . 70 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 vii Page 2.10.6 Coated printed boards. 73 2.10.7 Enclosed and sealed parts 76 2.10.8 Spacings filled by insulating compound. 77 2.10.9 Component external terminations
45、 77 2.10.10 Insulation with varying dimensions 78 3 Wiring, connections and supply 79 3.1 General. 79 3.1.1 Current rating and overcurrent protection 79 3.1.2 Protection against mechanical damage . 79 3.1.3 Securing of internal wiring. 79 3.1.4 Insulation of conductors 79 3.1.5 Beads and ceramic ins
46、ulators . 80 3.1.6 Screws for electrical contact pressure. 80 3.1.7 Insulating materials in electrical connections. 80 3.1.8 Self-tapping and spaced thread screws. 81 3.1.9 Termination of conductors. 81 3.1.10 Sleeving on wiring. 82 3.2 Connection to an a.c. mains supply or a d.c. mains supply 82 3.
47、2.1 Means of connection . 82 3.2.2 Multiple supply connections 83 3.2.3 Permanently connected equipment 83 3.2.4 Appliance inlets. 84 3.2.5 Power supply cords. 84 3.2.6 Cord anchorages and strain relief . 86 3.2.7 Protection against mechanical damage . 87 3.2.8 Cord guards 87 3.2.9 Supply wiring spa
48、ce 88 3.3 Wiring terminals for connection of external conductors 88 3.3.1 Wiring terminals 88 3.3.2 Connection of non-detachable power supply cords 88 3.3.3 Screw terminals 88 3.3.4 Conductor sizes to be connected 89 3.3.5 Wiring terminal sizes. 89 3.3.6 Wiring terminal design. 90 3.3.7 Grouping of
49、wiring terminals 90 3.3.8 Stranded wire 90 3.4 Disconnection from the mains supply 91 3.4.1 General requirement . 91 3.4.2 Disconnect devices . 91 3.4.3 Permanently connected equipment 91 3.4.4 Parts which remain energized . 92 3.4.5 Switches in flexible cords 92 3.4.6 Single-phase and d.c. equipment 92 3.4.7 Three-phase equipment 92 3.4.8 Switches as disconnect devices 92 3.4.9 Plugs as disconnect devices . 93 3.4.10 Interconnected equipment. 93 3.4.11 Multiple power sources . 93 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 02 Dec 2008 viii