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 Saws STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
2、OR DISTRIBUTION WITHOUT 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
3、, Dated March 21, 2005 Summary of Topics The revisions dated November 28, 2016 are being issued to update outdated references and UL effective date information in the Preface Page. No changes in requirements are involved. As noted in the Commitment for Amendments statement located on the back side o
4、f the title page, UL and CSA are committed to updating this harmonized standard jointly. However, the revision pages dated November 28, 2016 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 U
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9、 from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. NOVEMBER 28, 2016 UL 60745-2-20 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 28, 2016 UL 60745-2-20 t
10、r2 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-Held Motor-Operated Electric
11、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 FURTHER REPRODUCTION OR DISTRIBUTION
12、 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 proposals for revisions on any part
13、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 means of a new edition or revis
14、ed 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 publication may be reproduced in any fo
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17、-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) occurred on May 29, 2014. ANSI
18、 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 on any part of the Standard may
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20、 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 9 Protection against access
21、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 hazards .10 20 Mechanical strength
22、.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 insulation .11 29 Resistance t
23、o 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 Bibliography MARCH 13, 2009 CA
24、N/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 Requirements For Band Saws. It
25、 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 common standard was prepared by the Canadian Standards Association (CSA) and Underwriters Laboratories Inc. (UL). This standard was reviewed by
26、the CSA Subcommittee 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 Com
27、mittee. This standard 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
28、 stated in its scope, 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
29、 Harmonization This 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 gov
30、ernmental regulations. 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 procedu
31、ral rules of the 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 Inter
32、national will be announced through CSA Informs or a CSA Certication notice. NOVEMBER 28, 2016 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 NOVEMBER 28, 2016 CAN/CSA-C22.2 NO. 60745-2-2005 UL 6
33、0745-2-20 5 No Text on This PageUL 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 Interna
34、tional Electrotechnical 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 electro
35、nic elds. To this end 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 IE
36、C National Committee interested 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 Standardizati
37、on (ISO) in accordance 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 representa
38、tion from all interested 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 cann
39、ot be held responsible 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 publication
40、s. Any divergence between 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 P
41、ublication. 6) All users 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,
42、property damage or other 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
43、 in this publication. 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
44、 any or all such patent 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 con
45、sists of the rst edition (2003) documents 61F/508/FDIS and 61F/519/RVD and its amendment 1 (2008) documents 61F/738/FDIS and 61F/758/RVD. NOVEMBER 28, 2016 CAN/CSA-C22.2 NO. 60745-2-2005 UL 60745-2-20 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION
46、 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 1.1. A vertical line in the margin shows where the base publication has been modied by amendment 1. The French version of this standard
47、has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This part 2 is to be used in conjunction with the latest edition of IEC 60745-1, Hand-held motor-operated electric tools Safety Part 1: General requirements, and its amendments. It was estab
48、lished on the basis of the third edition (2001) of that standard. NOTE 1 When Part 1 is mentioned in this standard, it refers to IEC 60745-1. This part 2 supplements or modies the corresponding clauses of IEC 60745-1, so as to convert that publication into the IEC standard: Safety requirements for b
49、and saws. When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies as far as is reasonable. When this standard states addition , modication or replacement , the relevant text in Part 1 is to be adapted accordingly. NOTE 2 The following numbering system is used: subclauses, tables and gures that are numbered starting from 101 are additional to those in Part 1; additional annexes are lette
