UL-60745-2-4-2004(2009).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 60745-2-4 Hand-Held Motor-Operated Electric Tools Safety Part 2-4: Particular Requirements for Sanders and Polishers Other Than Disk Type UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R

2、EPRODUCTION 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 Hand-Held Motor-Operated Elec

3、tric Tools Safety Part 2-4: Particular Requirements for Sanders and Polishers Other Than Disk Type, UL 60745-2-4 Second Edition, Dated March 26, 2004 Revisions: This Standard contains revisions through and including January 23, 2009. Summary of Topics The revisions dated January 23, 2009 were issued

4、 to incorporate the following revised requirements to refl ect the January 23, 2009 ANSI recognition of the standard. 1. Revisions to align with IEC Amendment No. 1 for IEC 60745-2-4, second edition 2. Revisions to add superseded requirement pages that incorporate requirements to be applied to sande

5、rs and polishers other than disk type investigated to the requirements of the Third edition of the Standard for Hand-Held Motor-Operated Electric Tools Safety Part 1: General Requirements, UL 60745-1. UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language (S

6、GML). SGML - an international standard (ISO 8879-1986) - is a descriptive markup language that describes a documents structure and purpose, rather than its physical appearance on a page. Due to formatting differences resulting from the use of ULs new electronic publishing system, please note that ad

7、ditional 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. The revised requirements are substantially in acco

8、rdance with ULs Proposal(s) on this subject dated September 19, 2008. The revisions dated January 23, 2009 include a reprinted title page (page1) for this Standard. The following table lists the future effective dates with the corresponding reference. JANUARY 23, 2009 UL 60745-2-4tr1 UL COPYRIGHTED

9、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Future Effective DatesReferences October 31, 2012Entire 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

10、 title page of this Standard outlining the procedures to be followed to retain the approved text of this ANSI/UL Standard. The UL Foreword is no longer located within the UL Standard. For information concerning the use and application of the requirements contained in this Standard, the current versi

11、on of the UL Foreword is located on ULStandardsInfoNet at: http:/ The master for this Standard at ULs 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 questi

12、ons regarding the accuracy of this Standard. ULs 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 ULs Standards a

13、nd all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of 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, reco

14、rding, 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 im

15、plied, 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

16、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 ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. UL will attempt to

17、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 conditio

18、ns and operating systems for which it is intended. ULs 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 witho

19、ut prior notice. Purchasers of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgement (including reasonable attorneys fees) resulting from any error or deviation introduced while

20、purchaser is storing an electronic Standard on the purchasers computer system. JANUARY 23, 2009 UL 60745-2-4tr2 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL If a single-user version electronic Standard was purchased, one copy of this Stan

21、dard may be stored on the hard disk of a single personal computer, or on a single LAN fi le-server or the permanent storage device of a multiple-user computer in such a manner that this Standard may only be accessed by one user at a time and for which there is no possibility of multiple concurrent a

22、ccess. If a multiple-user version electronic Standard was purchased, one copy of the Standard may be stored on a single LAN fi le-server, or on the permanent storage device of a multiple-user computer, or on an Intranet server. The number of concurrent users shall not exceed the number of users auth

23、orized. 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 each single-user version of an electronic Standard. Only one copy of the Standard may be printed fo

24、r 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 printe

25、d 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

26、of the Standard having future effective dates as indicated in the preface. 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. New product submittals made prior to a specifi

27、 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 o

28、ption, it should be noted that compliance with all the requirements in this Standard will be required as a condition of continued Listing and Follow-Up Services after the effective date, and understanding of this should be signifi ed in writing. Copyright 2009 Underwriters Laboratories Inc. This Sta

29、ndard consists of pages dated as shown in the following checklist: PageDate 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . January 23, 2009 5. . . . . . . . . . . . . . . . . . . . . . . . . . .

30、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . March 26, 2004 6-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . January 23, 2009 SR1-SR2. . . .

31、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . January 23, 2009 JANUARY 23, 2009 UL 60745-2-4tr3 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 23, 2

32、009 UL 60745-2-4tr4 No Text on This Page UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Canadian Standards Association CAN/CSA-C22.2 No. 60745-2-4-04 Second Edition (IEC 60745-2-4:2002, MOD) Underwriters Laboratories Inc. UL 60745-2-4 Secon

33、d Edition Hand-Held Motor-Operated Electric Tools Safety Part 2-4: Particular Requirements for Sanders and Polishers Other Than Disk Type March 26, 2004 (Title Page Reprinted: January 23, 2009) This national standard is based on publication IEC 60745-2-4, Second Edition (2003). This amendment is an

34、adoption of IEC Amendment 1(2008) to publication IEC 60745-2-4, Second Edition (2005). ANSI/UL 60745-2-4-2009 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Canadian Standards

35、 Association (CSA) and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA or UL at any time. Revisions to this standard will be made only after processing according to the standards development procedures of CSA and UL. CSA an

36、d UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ISBN 1-55397-460-3 2004 Canadian Standards Association All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permissi

37、on of the publisher. Copyright 2009 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 transm

38、ittal notice that accompanies the latest set of revised requirements. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. T

39、he most recent designation of ANSI/UL 60745-2-4 as an American National Standard (ANSI) occurred on January 23, 2009. This ANSI/UL Standard for Safety, which consists of the second edition with revisions through January 23, 2009, is under continuous maintenance, whereby each revision is ANSI approve

40、d upon publication. UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41、. . . . . . .5 FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42、. . . . . . . . . . . . . . . . . . . . . . . .13 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 3 Terms and Defi nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43、. . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 4 General requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 5 General conditions for the tests . . . . . . . . . . . . . . . . . . . . . . . . . .

44、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 6 Void . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 7 Classifi cation . . . . . . . . . . . . . . . . . . . . . . . . . .

45、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 8 Marking and instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 9 Protection against access to live parts . . . . .

46、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 10 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 11 Input and current . . . . . . . . . . .

47、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 12 Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 13 Leakage current .

48、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 14 Moisture resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 15 Elect

49、ric strength . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 16 Overload protection of transformers and associated circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 17 Endurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 18 Abnormal operation . . . . . . . . . . .

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