UL 498A美国插头插座新标准(PDF 82页).pdf

UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 498A ISBN 0 7629 0483 6 Current Taps and Adapters UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Underwriters Laboratories Inc UL 333 Pfi ngsten Road Northbrook IL 60062 2096 UL Standard for Safety for Current Taps and Adapters UL 498A First Edition Dated December 17 1999 Revisions This Standard contains revisions through and including April 30 2003 SUMMARY OF TOPICS Revision of Noninterchangeability Obstruction Requirements UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language SGML SGML an international standard ISO 8879 1986 is a descriptive markup language that describes a document s structure and purpose rather than its physical appearance on a page Due to formatting differences resulting from the use of UL s new electronic publishing system please note that additional pages on which no requirements have been changed may be included in revision pages due to relocation of existing text and reformatting of the Standard Text that has been changed in any manner is marked with a vertical line in the margin Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective The following table lists the future effective dates with the corresponding item Future Effective DatesReferences April 1 2009Section 37 Sub sections 7 8 7 9 8 3 15 6 15 7 Paragraphs 7 1 1 7 6 1 8 1 1 8 2 1 8 2 2 8 2 3 8 2 4 9 1 9 2 9 3 9 4 9 5 9 6 9 7 9 8 9 9 9 10 9 11 9 12 9 14 9 15 9 16 11 3 1 11 4 1 30 14 31 8 33 4 Tables 9 1 18 1 Figures 9 1 11 3 The new requirements are substantially in accordance with UL s Bulletin s on this subject dated December 16 2002 The bulletin s is now obsolete and may be discarded The revisions dated April 30 2003 include a reprinted title page page1 for this Standard As indicated on the title page page 1 this UL Standard for Safety is an American National Standard Attention is directed to the note on the title page of this Standard outlining the procedures to be followed to retain the approved text of this ANSI UL Standard The master for this Standard at UL s Northbrook Office is the official document insofar as it relates to a UL service and the compliance of a product with respect to the requirements for that product and service or if there are questions regarding the accuracy of this Standard UL s Standards for Safety are copyrighted by UL Neither a printed copy of a Standard nor the distribution diskette for a Standard on Diskette and the fi le for the Standard on the distribution diskette should be altered in any way All of UL s Standards and all copyrights ownerships and rights regarding those Standards shall remain the sole and exclusive property of UL APRIL 30 2003 UL 498Atr1 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical photocopying recording or otherwise without prior permission of UL Revisions of UL Standards for Safety are issued from time to time A UL Standard for Safety is current only if it incorporates the most recently adopted revisions UL provides this Standard as is without warranty of any kind either expressed or implied including but not limited to the implied warranties of merchantability or fi tness for any purpose In no event will UL be liable for any special incidental consequential indirect or similar damages including loss of profi ts lost savings loss of data or any other damages arising out of the use of or the inability to use this Standard even if UL or an authorized UL representative has been advised of the possibility of such damage In no event shall UL s liability for any damage ever exceed the price paid for this Standard regardless of the form of the claim UL will attempt to answer support requests concerning electronic versions of its Standards However this support service is offered on a reasonable efforts basis only and UL may not be able to resolve every support request UL supports the electronic versions of its Standards only if they are used under the conditions and operating systems for which it is intended UL s support policies may change from time to time without notifi cation UL reserves the right to change the format presentation fi le types and formats delivery methods and formats and the like of both its printed and electronic Standards without prior notice Purchasers of the electronic versions of UL s Standards for Safety agree to defend indemnify and hold UL harmless from and 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of a Standard conducting a word search and the like Only one copy of the Standard may be printed from each single user version of an electronic Standard Only one copy of the Standard may be printed for each authorized user of a multiple user version of an electronic Standard Because of differences in the computer software printer setup used by UL and those of electronic Standards purchasers the printed copy obtained by a purchaser may not look exactly like the on line screen view or the printed Standard An employee of an organization purchasing a UL Standard can make a copy of the page or pages being viewed for their own fair and or practical internal use The requirements in this Standard are now in effect except for those paragraphs sections tables fi gures and or other elements of the Standard having future effective dates as indicated in the note following the affected item The prior text for requirements that have been revised and that have a future effective date are located after the Standard and are preceded by a SUPERSEDED REQUIREMENTS notice APRIL 30 2003 UL 498Atr2 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL New product submittals made prior to a specifi ed future effective date will be judged under all of the requirements in this Standard including those requirements with a specifi ed future effective date unless the applicant specifi cally requests that the product be judged under the current requirements However if the applicant elects this option it should be noted that compliance with all the requirements in this Standard will be required as a condition of continued Listing Recognition and Follow Up Services after the effective date and understanding of this should be signifi ed in writing Copyright 2003 Underwriters Laboratories Inc This Standard consists of pages dated as shown in the following checklist PageDate 1 6 April 30 2003 7 9 October 26 2001 10 12 April 30 2003 13 18F October 26 2001 19 April 30 2003 20 October 26 2001 21 December 17 1999 22 April 30 2003 23 25 December 17 1999 26 32 October 26 2001 33 34 April 30 2003 35 37 December 17 1999 38 38B October 26 2001 39 December 17 1999 40 44B October 26 2001 45 48 December 17 1999 49 October 26 2001 50 December 17 1999 51 52 October 26 2001 A1 A2 October 26 2001 SR1 SR2B April 30 2003 SR3 SR4 October 26 2001 APRIL 30 2003 UL 498Atr3 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 30 2003 UL 498Atr4 No Text on This Page UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 17 1999 Title Page Reprinted April 30 2003 1 UL 498A Current Taps and Adapters First Edition December 17 1999 The most recent designation of ANSI UL 498A as an American National Standard ANSI occurred on March 6 2003 This ANSI UL Standard for Safety which consists of the First Edition with revisions through April 30 2003 is under continuous maintenance whereby each revision is ANSI approved upon publication Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time Written comments are to be sent to the UL MEL Standards Department 1285 Walt Whitman Road Melville NY 11747 An effective date included as a note immediately following certain requirements is one established by Underwriters Laboratories Inc Revisions of this Standard will be made by issuing revised or additional pages bearing their date of issue A UL Standard is current only if it incorporates the most recently adopted revisions all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements ISBN 0 7629 0483 6 COPYRIGHT 2003 UNDERWRITERS LABORATORIES INC ANSI UL 498A 2003 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 30 2003CURRENT TAPS AND ADAPTERS UL 498A2 No Text on This Page UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS FOREWORD 6 1 Scope 7 2 References 8 3 Glossary 9 4 Components 10 5 Units of Measurement 10 6 Ratings 10 7 Markings 10B 7 1 Company name catalog designation electrical rating 10B 7 2 Multiple factories 10B 7 3 AC only devices 11 7 4 Circuit limitations 11 7 5 Disconnecting use only 13 7 6 Adapters 13 7 7 Travel adapters 13 7 8 Devices with two sets of line blades 14 7 9 Devices with supplementary overcurrent protection 14 8 Installation Instructions 14 8 1 General 14 8 2 Current taps 15 8 3 Grounding adapters 15 8 4 Travel adapters 15 9 General 17 10 Insulating Materials 18C 10 1 General 18C 10 2 Flammability 18C 10 3 Electrical properties 18D 10 4 Thermal properties 18E 10 5 Vulcanized fi ber 18F 10 6 Sealing compounds 18F 10 7 Fuse enclosures 18F 11 Enclosure 18F 11 1 General 18F 11 2 Male face size 19 11 3 Noninterchangeability obstructions 19 11 4 Female face size 19 12 Current Carrying Parts 21 12 1 General 21 12 2 Blades 21 12 3 Contacts 24 13 Grounding and Dead Metal Parts 25 13 1 General 25 13 2 Blades 26 13 3 Contacts 26 14 Spacings 26 15 Assembly 28 15 1 General 28 15 2 Outlet separation 29 15 3 Grounding and polarization 29 APRIL 30 2003CURRENT TAPS AND ADAPTERS UL 498A3 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 15 4 Mating and interchangeability 29 15 5 Fuseholders 30A 15 6 Supplementary circuitry 30A 15 7 Supplementary overcurrent protectors 30B 16 Adapters 30C 17 Travel Adapters 30D 18 Representative Devices 30D 19 Comparative Tracking Index Test 32 20 Glow Wire Test 32 21 High Current Arc Resistance to Ignition Test 32 22 Mold Stress Relief Test 34 23 Moisture Absorption Resistance Test 34 24 Dielectric Withstand Test 35 25 Accelerated Aging Tests 36 25 1 General 36 25 2 Rubber EPDM and TEE compounds 36 25 3 PVC compounds and copolymers 36 26 Insulation Resistance Test 36 27 Security of Blades Test 37 28 Contact Security Test 37 29 Retention of Plugs Test 38 30 Overload Test 38A 31 Temperature Test 41 32 Retention of Plugs Test Repeated 42 32 1 General 42 32 2 Plug retention 42 32 3 Plug withdrawal 43 33 Resistance to Arcing Test 43 34 Fuseholder Temperature Test 44 35 Improper Insertion Test 44A 36 Grounding Contact Tests 46 36 1 General 46 36 2 Conditioning 46 36 3 Continuity 46 36 4 Retention 47 37 Supplementary Overcurrent Protector Temperature Test 51 APPENDIX A Standards for Components A1 APRIL 30 2003CURRENT TAPS AND ADAPTERS UL 498A4 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 30 2003CURRENT TAPS AND ADAPTERS UL 498A5 No Text on This Page UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FOREWORD A This Standard contains basic requirements for products covered by Underwriters Laboratories Inc UL under its Follow Up Service for this category within the limitations given below and in the Scope section of this Standard These requirements are based upon sound engineering principles research records of tests and fi eld experience and an appreciation of the problems of manufacture installation and use derived from consultation with and information obtained from manufacturers users inspection authorities and others having specialized experience They are subject to revision as further experience and investigation may show is necessary or desirable B The observance of the requirements of this Standard by a manufacturer is one of the conditions of the continued coverage of the manufacturer s product C A product which complies with the text of this Standard will not necessarily be judged to comply with the Standard if when examined and tested it is found to have other features which impair the level of safety contemplated by these requirements D A product that contains features characteristics components materials or systems new or different from those covered by the requirements in this Standard and that involves a risk of fi re or of electric shock or injury to persons shall be evaluated using appropriate additional component and end product requirements to maintain the level of safety as originally anticipated by the intent of this Standard A product whose features characteristics components materials or systems confl ict with specifi c requirements or provisions of this Standard does not comply with this Standard Revision of requirements shall be proposed and adopted in conformance with the methods employed for development revision and implementation of this Standard E UL in performing its functions in accordance with its objectives does not assume or undertake to discharge any responsibility of the manufacturer or any other party The opinions and fi ndings of UL represent its professional judgment given with due consideration to the necessary limitations of practical operation and state of the art at the time the Standard is processed UL shall not be responsible to anyone for the use of or reliance upon this Standard by anyone UL shall not incur any obligation or liability for damages including consequential damages arising out of or in connection with the use interpretation of or reliance upon this Standard F Many tests required by the Standards of UL are inherently hazardous and adequate safeguards for personnel and property shall be employed in conducting such tests APRIL 30 2003CURRENT TAPS AND ADAPTERS UL 498A6 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1 Scope 1 1 These requirements cover current taps and adapters for use in accordance with the National Electrical Code ANSI NFPA 70 1 2 These requirements do not cover current taps or adapters rated at more than 200 A or for more than 600 V See 6 1 1 3 These requirements do not directly apply to current taps wired to fl exible cord or lampholder adapters but supplement the applicable standards Lampholder adapters are covered in the Standard for Edison Base Lampholders UL 496 Current taps wired to fl exible cord are covered in the Standard for Attachment Plugs and Receptacles UL 498 1 4 These requirements do not cover cord connected relocatable power taps intended only for indoor use as a temporary extension of a grounding alternating current branch circuit for general use and which are covered by the Standard for Relocatable Power Taps UL 1363 1 5 These requirements do not cover the current or voltage conversion circuitry capable of being used in travel adapters 1 6 As used in this Standard the term device is intended to refer to both current taps and adapters unless specifi cally stated otherwise 1 7Deleted October 26 2001 OCTOBER 26 2001CURRENT TAPS AND ADAPTERS UL 498A7 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 References 2 1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard 2 2 The referenced standards include the following UL Standards UL 94 Tests for Flammability of Plastic Materials for Parts in Devices and Appliances UL 248 14 Low Voltage Fuses Part 14 Supplemental Fuses UL 489 Molded Case Circuit Breakers Molded Case Switches and Circuit Breaker Enclosures UL 497A Secondary Protectors for Communications Circuits UL 512 Fuseholders UL 746A Polymeric Materials Short Term Property Evaluations UL 746B Polymeric Materials Long Term Property Evaluations UL 746C Polymeric Materials Use in Electrical Equipment Evaluations UL 746D Polymeric Materials Fabricated Parts UL 1077 Supplementary Protectors for Use in Electrical Equipment UL 1283 Electromagnetic Interference Filters UL 1449 Transient Voltage Surge Suppressors UL 1659 Attachment Plug Blades for Use in Cord Sets and Power Supply Cords UL 1681 Wiring Device Confi gurations ANSI Standards ANSI NEMA