1、CAN/CSA-C22.2 No. 60950-1-07 (IEC 60950-1:2005, MOD)A National Standard of Canada(reaffirmed 2016)Information Technology Equipment Safety Part 1: General RequirementsLegal Notice for StandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development proce
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18、s Update ServiceCAN/CSA-C22.2 No. 60950-1-07March 2007Title:Information Technology Equipment Sa fety Part 1: Ge neral RequirementsPagination:504 pages, each dated March 2007To register for e-mail notification about any updates to this publication go on-line to shop.csa.caclick on E-mail Services und
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33、sts with theStandards Council of Canada270 Albert Street, Suite 200Ottawa, Ontario, K1P 6N7CanadaCette Norme nationale du Canada est offerte en anglais et en franais.Although the intended primary application of this Standard is stated in its Scope, it is importantto note that it remains the responsi
34、bility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationBlank pageInformation Technology Equipment Safety Part 1:General RequirementsMarch 27, 2007This national standard is based on publication IEC 60950-1, Second Edition(2005)
35、.Canadian Standards AssociationCAN/CSA-C22.2 No. 60950-1-07Second Edition(IEC 60950-1:2005, MOD)Underwriters Laboratories Inc.UL 60950-1Second EditionANSI/UL 60950-1-2007Commitment for AmendmentsThis Standard is issued jointly by the Canadian Standards Association andUnderwriters Laboratories Incorp
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38、950-1 as an American NationalStandard (ANSI) occurred on March 27, 2007.This ANSI/UL Standard for Safety, which consists of the Second Edition, is undercontinuous maintenance, whereby each revision is ANSI approved uponpublication.The U.S. Department of Defense (DoD) has adopted UL 1950 on December
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40、ssue. A UL Standard is current only if it incorporates themost recently adopted revisions, all of which are itemized on the transmittal noticethat accompanies the latest set of revised requirements. Comments or proposalsfor revisions on any part of the Standard may be submitted to UL at any time.Pro
41、posals should be submitted via a Proposal Request in ULs On-LineCollaborative Standards Development System (CSDS) at http:/.ISBN 1-55436-415-9Copyright 2007Canadian Standards AssociationAll rights reserved. No part of thispublication may be reproduced in anyform whatsoever without the priorpermissio
42、n of the publisher.ISBN 0-7629-1238-3Copyright 2007Underwriters Laboratories Inc.CONTENTSPREFACE 9FOREWORD 12INTRODUCTION .150 Principles of safety 150.1 General principles of safety 150.2 Hazards .160.3 Materials and components .201 General 211.1 Scope .211.2 Definitions .231.3 General requirements
43、 .381.4 General conditions for tests 401.5 Components .461.6 Power interface .541.7 Markings and instructions 562 Protection from hazards 652.1 Protection from electric shock and energy hazards 652.2 SELV circuits .762.3 TNV circuits 792.4 Limited current circuits 852.5 Limited power sources 872.6 P
44、rovisions for earthing and bonding .882.7 Overcurrent and earth fault protection in primary circuits .982.8 Safety interlocks .1012.9 Electrical insulation 1052.10 Clearances, creepage distances and distances through insulation 1123 Wiring, connections and supply 1453.1 General 1453.2 Connection to
45、a mains supply .1513.3 Wiring terminals for connection of external conductors .1593.4 Disconnection from the mains supply 1643.5 Interconnection of equipment 1674 Physical requirements 1684.1 Stability .1684.2 Mechanical strength 1694.3 Design and construction 1784.4 Protection against hazardous mov
46、ing parts .1894.5 Thermal requirements 1914.6 Openings in enclosures 1944.7 Resistance to fire 2055 Electrical requirements and simulated abnormal conditions 2155.1 Touch current and protective conductor current .2155.2 Electric strength .2275.3 Abnormal operating and fault conditions 2316 Connectio
47、n to telecommunication networks 2366.1 Protection of telecommunication network service persons, and users of otherequipment connected to the network, from hazards in the equipment 236MARCH 27, 2007 CAN/CSA-C22.2 NO. 60950-1-07 UL 60950-1 3DE6.2 Protection of equipment users from overvoltages on tele
48、communicationnetworks 2396.3 Protection of the telecommunication wiring system from overheating .2426.4 Protection against overvoltage from power line crosses 2437 Connection to cable distribution systems 2467.1 General 2467.2 Protection of cable distribution system service persons, and users of oth
49、erequipment connected to the system, from hazardous voltages in theequipment 2467.3 Protection of equipment users from overvoltages on the cable distributionsystem .2477.4 Insulation between primary circuits and cable distribution systems .247Annex A (normative) Tests for resistance to heat and fireA.1 Flammability test for fire enclosures of movable equipment having a total massexceeding 18 kg and of stationary equipment (see 4.7.3.2) .250A.2 Fla
