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1、UL 60745-2-21Hand-Held Motor-OperatedElectric Tools Safety Part2-21: Particular RequirementsFor Drain CleanersMARCH 13, 2009 UL 60475-2-21tr3Underwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Hand-Held Motor-Operated Electric Tools Safety Part 2-
2、21: ParticularRequirements For Drain Cleaners, UL 60475-2-21First Edition, Dated March 21, 2005Revisions: This Standard contains revisions through and including March 13, 2009.Summary of Topics1. Revisions to align with IEC Amendment No. 1 for IEC 60745-2-21, first edition2. Revisions to add superse
3、ded requirement pages that incorporate requirements to be applied to drain cleaners investigated to the requirements of the Third edition of the Standard for Hand-Held Motor-Operated Electric Tools Safety Part 1: General Requirements, UL 60745-1UL Standards for Safety are developed and maintained in
4、 the Standard Generalized Markup Language (SGML). 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 elect
5、ronic 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. The fol
6、lowing table lists the future effective dates with the corresponding reference.Future Effective DatesReferencesOctober 31, 2012Entire StandardThe revised requirements are substantially in accordance with ULs Proposal(s) on this subject datedOctober 24, 2008.The revisions dated March 13, 2009 include
7、 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 AN
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22、e 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, figures
23、, and/or other elements 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
24、made prior to a specified future effective date will be judged under all of the requirements in this Standard including those requirements with a specified future effective date, unless the applicant specifically requests that the product be judged under the current requirements. However, if the app
25、licant 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 and Follow-Up Services after the effective date, and understanding of this should be signified in writing.Copyright 2009 Underwriters Laborato
26、ries Inc.This Standard consists of pages dated as shown in the following checklist:PageDate1-3 . March 13, 20094 . March 21, 20055-12 . March 13, 2009SR1-SR2 . March 13, 2009No Text on This PageCanadian Standards AssociationCAN/CSA-C22.2 No. 60745-2-21-05First Edition(IEC 60745-2-21:2002)Underwriter
27、s Laboratories Inc. UL 60745-2-21First EditionHand-Held Motor-Operated Electric Tools Safety Part 2-21: Particular Requirements For Drain CleanersMarch 21, 2005(Title Page Reprinted: March 13, 2009) This standard is based on IEC 60745-2-21, First Edition (2002).This amendment is an adoption of IEC A
28、mendment 1(2008), First Edition (2002).ANSI/UL 60745-2-21-2009Commitment for AmendmentsThis Standard is issued jointly by the Canadian Standards 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
29、 any time. Revisions to this standard will be made only after processing according to the standards development procedures of CSA and UL. CSA and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue.ISBN 1-55397-671-1 2005Canad
30、ian Standards AssociationAll rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.Copyright 2009 Underwriters Laboratories Inc.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Sta
31、ndard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL.This ANSI/UL Standard for Safety consists of the First edition including revisions through March 13,2009.The most recent de
32、signation of ANSI/UL 60745-2-21 as an American National Standard (ANSI) occurred on March 13, 2009. 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 A
33、NSI approval of IEC-based standards.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 .To purchase UL Standards, visit Comm 2000
34、at m- or call toll-free 1-888-853-3503.MARCH 13, 2009CAN/CSA-C22.2 NO. 60745-2-21-05UL 60745-2-215CONTENTSPreface . .4FOREWORD . .61 Scope . .92 Normative references . .93 Terms and definitions . .94 General requirements . .95 General conditions for the tests . .96 Void . .97 Classification . .98 Ma
35、rking and instructions . .99 Protection against access to live parts . .910 Starting . .911 Input and current . .1012 Heating . .1013 Leakage current . .1014 Moisture resistance . .1015 Electric strength . .1016 Overload protection of transformers and associated circuits . .1017 Endurance . .1018 Ab
36、normal operation . .1019 Mechanical hazards . .1020 Mechanical strength . .1021 Construction . .1022 Internal wiring . .1123 Components . .1124 Supply connection and external flexible cords . .1125 Terminals for external conductors . .1126 Provision for earthing . .1127 Screws and connections . .112
37、8 Creepage distances, clearances and distances through insulation . .1129 Resistance to heat, fire and tracking . .1130 Resistance to rusting . .1131 Radiation, toxicity and similar hazards . .11AnnexesAnnex K (normative) Battery Tools and Battery PacksAnnex L (normative) Battery Tools and Battery P
38、acks Provided with Mains Connection orNon-Isolated SourcesBibliographyPrefaceThis is the common CSA and UL standard for Hand-Held Motor-Operated Electric Tools Safety Part2-21: Particular Requirements For Drain Cleaners. It is the first edition of CAN/CSA-C22.2 No. 60745-2-21 and the first edition o
39、f UL 60745-2-21. This standard is an adoption of IEC 60745-2-21, first edition.This Standard CAN/CSA-C22.2 No. 60745-2-21/UL 60745-2-21, first edition, supersedes:a) the first edition of CAN/CSA-C22.2 No. 745-2-35/UL 745-2-35 published in 1995; andb) CAN/CSA-C22.2 No. 745-4-35/UL 745-4-35, published in 1995 (requirements for battery tools and battery packs are now incorporated into the requirements of CAN/CSA-C22.2 No.60745-2-21, first edition, and UL 60745-2-21, first edition).The standard number
