UL 60745-2-20-2005 UL Standard for Safety Hand-Held Motor-Operated Electric Tools - Safety - Part 2-20 Particular Requirments for Band Saws (First Edition Reprint with Revisions Th_1.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 60745-2-20 Hand-Held Motor-Operated Electric Tools Safety Part 2-20: Particular Requirements For Band SawsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITH

2、OUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Hand-Held Motor-Operated Electric Tools Safety Part 2-20: Particular Requirements For Band Saws, UL 60745-2-20 First Edition, Dated March 21, 20

3、05 Summary of Topics The revisions dated May 29, 2014 are being issued to reaffirm approval of UL 60745-2-20 as an American National Standard. No changes in requirements are involved. As noted in the Commitment for Amendments statement located on the back side of the title page, UL and CSA are commi

4、tted to updating this harmonized standard jointly. However, the revision pages dated May 29, 2014 will not be jointly issued by UL and CSA as these revision pages address UL ANSI approval dates only. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked w

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9、le purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the preface. The prior text

10、 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that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. MAY 29, 2014 UL 60745-2-20 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM U

11、L MAY 29, 2014 UL 60745-2-20 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA Group CAN/CSA-C22.2 No. 60745-2-2005 First Edition (IEC 60745-2-20:2003) Underwriters Laboratories Inc. UL 60745-2-20 First Edition Hand

12、-Held Motor-Operated Electric Tools Safety Part 2-20: Particular Requirements For Band Saws March 21, 2005 (Title Page Reprinted: May 29, 2014) This standard is based on IEC 60745-2-20, First Edition (2003). ANSI/UL 60745-2-20-2009 (R2014) Approved byUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE

13、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Association of Standardization and Certication (ANCE), the Canadian Standards Association (operating as “CSA Group”), and Underwriters Laboratories Inc. (UL). Comments or propos

14、als for revisions on any part of the standard may be submitted to ANCE, CSA Group, or UL at anytime. Revisions to this standard will be made only after processing according to the standards development procedures of ANCE, CSA Group, and UL. CSA Group and UL will issue revisions to this standard by m

15、eans of a new edition or revised or additional pages bearing their date of issue. ANCE will incorporate the same revisions into a new edition of the standard bearing the same date of issue as the CSA Group and UL pages. ISBN 1-55397-672-X 2005 CSA Group All rights reserved. No part of this publicati

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18、csa.ca or call toll-free 1-800-463-6727 or 416-747-4044. Copyright 2014 Underwriters Laboratories Inc. This ANSI/UL Standard for Safety consists of the First Edition including revisions through March 27, 2009. The most recent designation of ANSI/UL 60745-2-20 as an American National Standard (ANSI)

19、occurred on May 29, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. The National Difference Page and IEC Foreword are also excluded from the ANSI approval of IEC-based standards. Comments or proposals for revisions o

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21、AL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .4 FOREWORD 6 1 Scope .9 2 Normative references 9 3 Terms and Denitions .9 4 General requirements .9 5 General conditions for the tests .9 6 Void .9 7 Classication .9 8 Marking and instructions .9

22、9 Protection against access to live parts .9 10 Starting 10 11 Input and current .10 12 Heating 10 13 Leakage current 10 14 Moisture resistance .10 15 Electric strength 10 16 Overload protection of transformers and associated circuits 10 17 Endurance .10 18 Abnormal operation .10 19 Mechanical hazar

23、ds .10 20 Mechanical strength .10 21 Construction .10 22 Internal wiring 11 23 Components .11 24 Supply connection and external exible cords 11 25 Terminals for external conductors .11 26 Provision for earthing 11 27 Screws and connections .11 28 Creepage distances, clearances and distances through

24、insulation 11 29 Resistance to heat, re and tracking 11 30 Resistance to rusting 11 31 Radiation, toxicity and similar hazards .11 Annexes Annex K (normative) Battery Tools and Battery Packs Annex L (normative) Battery Tools and Battery Packs Provided with Mains Connection or Non-Isolated Sources Bi

25、bliography MARCH 13, 2009 CAN/CSA-C22.2 NO. 60745-2-2005 UL 60745-2-20 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the common CSA and UL standard for Hand-Held Motor-Operated Electric Tools Safety Part 2-20 Particular Re

26、quirements For Band Saws. It is the rst edition of CAN/CSA-C22.2 No. 60745-2-20 and the rst edition of UL 60745-2-20. This standard is an adoption of IEC 60745-2-20, rst edition. This Standard CAN/CSA-C22.2 No. 60745-2-20/UL 60745-2-20, rst edition, supersedes the rst edition of CAN/CSA-C22.2 No. 74

27、5-2-33/UL 745-2-33 published in 1995. The standard number has been aligned to correspond with the equivalent IEC 60745-2-20 standard. This common standard was prepared by the Canadian Standards Association (CSA) and Underwriters Laboratories Inc. (UL). This standard was reviewed by the CSA Subcommit

28、tee on Safety of Hand-Held Motor-Operated Electric Tools, under the jurisdiction of the CSA Technical Committee on Consumer and Commercial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This stan

29、dard has been approved as a National Standard of Canada by the Standards Council of Canada (SCC). This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. Note: Although the intended primary application of this Standard is stated in its sc

30、ope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose. Where reference is made to a specic number of samples to be tested, the specied number shall be considered a minimum quantity. Level of Harmonization Th

31、is standard adopts the IEC text with no national differences. This standard is published as an identical standard for CSA and UL. An identical standard is a standard that is exactly the same in technical content except for national differences resulting from conicts in codes and governmental regulat

32、ions. Presentation is word for word except for editorial changes. Interpretations The interpretation by the standards development organization of an identical or equivalent standard is based on the literal text to determine compliance with the standard in accordance with the procedural rules of the

33、standards development organization. If more than one literal interpretation has been identied, a revision is to be proposed as soon as possible to each of the standards development organizations to more accurately reect the intent. CSA Effective Date The effective date for CSA International will be

34、announced through CSA Informs or a CSA Certication notice. MARCH 21, 2005 CAN/CSA-C22.2 NO. 60745-2-2005 UL 60745-2-20 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Effective Date The effective date for UL 60745-2-20, First edition is

35、October 31, 2012. Between the present and October 31, 2012 new product submittals to UL must be evaluated under all requirements in this Standard or, if requested in writing, evaluated under presently effective requirements only. The presently effective requirements are contained in the edition of U

36、L 745-2-33. As of October 31, 2012, all products Listed or Recognized by UL shall comply with the requirements in this standard. A UL effective date is one established by Underwriters Laboratories Inc. and is not part of the ANSI approved standard. MARCH 13, 2009 CAN/CSA-C22.2 NO. 60745-2-2005 UL 60

37、745-2-20 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTERNATIONAL ELECTROTECHNICAL COMMISSION HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS SAFETY PART 2-20: PARTICULAR REQUIREMENTS FOR BAND SAWS FOREWORD 1) The International Electrotechnica

38、l Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic elds. To this end

39、and in addition to other activities, IEC publishes International Standards, Technical Specications, Technical Reports, Publicly Available Specications (PAS) and Guides (hereafter referred to as IEC Publication(s) ). Their preparation is entrusted to technical committees; any IEC National Committee i

40、nterested in the subject dealt with may participate in this preparatory work. International, governmental and nongovernmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance

41、 with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interest

42、ed IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible

43、 for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence betw

44、een any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All use

45、rs should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or oth

46、er damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication.

47、Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such paten

48、t rights. This part of International Standard IEC 60745 has been prepared by subcommittee 61F: Safety of hand-held motor-operated electric tools, of IEC technical committee 61: Safety of household and similar electrical appliances This consolidated version of IEC 60745-2-20 consists of the rst editi

49、on (2003) documents 61F/508/FDIS and 61F/519/RVD and its amendment 1 (2008) documents 61F/738/FDIS and 61F/758/RVD. MARCH 13, 2009 CAN/CSA-C22.2 NO. 60745-2-2005 UL 60745-2-20 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL The technical content is therefore identical to the base edition and its amendment and has been prepared for user convenience. It bears the edition number