1、UL 45ISBN 0-7629-0155-1Portable Electric ToolsUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Portable Electric Tools, UL 45Eighth Edition, Dated May 6, 1997Revisions: This Standard contains revisions through and including January 5, 2000.Anno
2、uncement Bulletin(s): This Standard contains the announcement bulletin(s) dated October 13, 1997. The announcement bulletin is located at the end of the Standard (after the adoption bulletin(s).UL is in the process of converting its Standards for Safety to the Standard Generalized Markup Language(SG
3、ML), and implementing an SGML compliant document management and publishing system. SGML -an international standard (ISO 8879-1986) - is a descriptive markup language that describes a documentsstructure and purpose, rather than its physical appearance on a page. Significant benefits that will resultf
4、rom ULs use of SGML and these new systems include increased productivity, reduced turnaround times,and data and information consistency, reusability, shareability, and portability. However, the fonts,pagination, and general formatting of ULs new electronic publishing system differ from that of ULspr
5、evious publishing system. Consequently, when revision pages are issued for a Standard with the newpublishing system, these differences may result in the printing of pages on which no requirements havebeen changed - these additional pages result from relocation of text due to repagination and reforma
6、ttingof the Standard with the new publishing system.Text that has been changed in any manner is marked with a vertical line in the margin. Changes inrequirements are marked with a vertical line in the margin and are followed by an effective date noteindicating the date of publication or the date on
7、which the changed requirement becomes effective.The revisions dated January 5, 2000 include a reprinted title page (page1) for this Standard.The revisions dated January 5, 2000 were issued for editorial corrections. These corrections include anycombination of the following: Updated Foreword (item D)
8、; Updated Scope; title changes to UL 489 and/orUL 1950; Withdrawn standards, UL 519 and UL 547, being replaced by UL 2111; Removal of the 94flammability classification. These revisions may also include other miscellaneous editorial corrections.As indicated on the title page (page 1), this UL Standar
9、d 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 followedto retain the approved text of this ANSI/UL Standard.As indicated on the title page (page1), this UL Standard for Safety has been adopted by the D
10、epartmentof Defense.The master for this Standard at ULs Northbrook Office is the official document insofar as it relates to aUL 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.ULs
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12、thoseStandards shall remain the sole and exclusive property of UL.JANUARY 5, 2000 UL 45 tr1All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwisewithout pri
13、or permission of UL.Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is currentonly if it incorporates the most recently adopted revisions.UL provides this Standard as is without warranty of any kind, either expressed or implied, including butnot limited to
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21、r on an Intranetserver. The number of concurrent users shall not exceed the number of users authorized.Electronic Standards are intended for on-line use, such as for viewing the requirements of a Standard,conducting a word search, and the like. Only one copy of the Standard may be printed from eachs
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23、py 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 beingviewed for their own fair and/or practical internal use.The requirements in this Standard are now in
24、effect, except for those paragraphs, sections, tables, figures,and/or other elements of the Standard having future effective dates as indicated in the note following theaffected item. The prior text for requirements that have been revised and that have a future effective dateare located after the St
25、andard, and are preceded by a SUPERSEDED REQUIREMENTS notice.JANUARY 5, 2000 UL 45tr2New product submittals made prior to a specified future effective date will be judged under all of therequirements in this Standard including those requirements with a specified future effective date, unlessthe appl
26、icant specifically requests that the product be judged under the current requirements. However, ifthe applicant elects this option, it should be noted that compliance with all the requirements in thisStandard will be required as a condition of continued Listing, Recognition, and Follow-Up Services a
27、fterthe effective date, and understanding of this should be signified in writing.Copyright 2000 Underwriters Laboratories Inc.This Standard consists of pages dated as shown in the following checklist:Page Date1-6.January 5, 20007-13.May6,199714-14B .August 7, 199815-23.May6,199724.June 2, 199725-35.
28、May6,199736-37 .August 7, 199838.January 5, 200038A-38B.August 7, 199839-51.May6,199752-52B .August 7, 199853-67.May6,199768.June 2, 199769-70.May6,199771.June 2, 199772-74.May6,199775.June 2, 199776-77.May6,199778-78B .January 5, 200079-93.May6,199794.June 2, 199795.May6,199796-97 .June 2, 199798-1
29、03.May6,1997104-106B.August 7, 1998107-108 .May6,1997109-110 .August 7, 1998111-113 .May6,1997114-114B.August 7, 1998115-118 .May6,1997119-120B.August 7, 1998121-133 .May6,1997134-134B.August 7, 1998135-139 .May6,1997140-142 .January 5, 2000142A.June 2, 1997142B.June 2, 1998143-144 .May6,1997A1-A2 .
30、May6,1997CRG1-CRG6 .May6,1997JANUARY 5, 2000 UL 45 tr3JANUARY 5, 2000 UL 45tr4No Text on This PageMAY 6, 1997(Title Page Reprinted: January 5, 2000)1UL 45Standard for Portable Electric ToolsFirst Edition October, 1960Second Edition March, 1969Third Edition July, 1972Fourth Edition April, 1974Fifth E
31、dition July, 1981Sixth Edition January, 1985Seventh Edition October, 1991Eighth EditionMay 6, 1997Approval as an American National Standard (ANSI) covers the numberedparagraphs on pages dated May 6, 1997 . These pages should not be discardedwhen revised or additional pages are issued if it is desire
32、d to retain the ANSIapproved text.An effective date included as a note immediately following certain requirementsis one established by Underwriters Laboratories Inc.Approved as ANSI C33.49-1969, January, 1969Approved as ANSI/UL 45-1984, August 20, 1984Approved as ANSI/UL 45-1990, December 3, 1990App
33、roved as ANSI/UL 45-1997, January 6, 1997The Department of Defense (DoD) has adopted UL 45 on March 11, 1991 . Thepublication of revised pages or a new edition of this Standard will not invalidatethe DoD adoption.Revisions of this Standard will be made by issuing revised or additional pagesbearing t
34、heir date of issue. 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.Figures 27.4 and 27.9 are reproduced with permission from Safety Code for theUse, Care a
35、nd Protection of Abrasive Wheels, ANSI B7.1-1978, which may beobtained from American National Standards Institute, Inc., 1430 Broadway, NewYork, NY 10018ISBN 0-7629-0155-1COPYRIGHT 1974, 2000 UNDERWRITERS LABORATORIES INC.ANSI/UL 45-1997JANUARY 5, 2000PORTABLE ELECTRIC TOOLS - UL 452No Text on This
36、PageCONTENTSFOREWORD .6INTRODUCTION1 Scope .72 Terminology .83 Components .84 General .8CONSTRUCTION5 General .96 Frame and Enclosure .97 Mechanical Assembly .128 Protection Against Corrosion .139 Power Supply Cords .139.1 Cords and plugs .139.2 Strain relief .169.3 Bushings .1610 Live Parts .1711 Internal Wiring .1712 Insulating Material .
