1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 745-2-31ISBN 1-55989-777-5Particular Requirements forDiamond Core DrillsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED
2、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Particular Requirements for Diamond Core Drills,UL 745-2-31First Edition, Dated March 23, 1995Revisions:
3、This Standard contains revisions through and including May 5, 2006.SUMMARY OF TOPICSThe revisions dated May 5, 2006 were issued to reflect the May 5, 2006 ANSI recognition of thestandard.Please note that due to formatting issues, all of the pages of this standard have been assigned a May 5,2006 date
4、. However, no changes have been made to the requirements, and only the ANSI affirmation dateinformation has been changed.Text that has been changed in any manner is marked with a vertical line in the margin.The revisions dated May 5, 2006 include a reprinted title page (page1) for this Standard.As i
5、ndicated 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 followedto retain the approved text of this ANSI/UL Standard.The UL Foreword is no longer located with
6、in the UL Standard. For information concerning the use andapplication of the requirements contained in this Standard, the current version of the UL Foreword islocated on ULStandardsInfoNet at: http:/ master for this Standard at ULs Northbrook Office is the official document insofar as it relates to
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8、d-on-Diskette and the file for the Standard on the distribution diskette should bealtered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding thoseStandards shall remain the sole and exclusive property of UL.All rights reserved. No part of this publication may be re
9、produced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwisewithout prior 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
10、 most recently adopted revisions.UL provides this Standard as is without warranty of any kind, either expressed or implied, including butnot limited to, the implied warranties of merchantability or fitness for any purpose.MAY 5, 2006 UL 745-2-31 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
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21、r those paragraphs, sections, tables, figures,and/or other elements of the Standard having future effective dates as indicated in the preface. The priortext for requirements that have been revised and that have a future effective date are located after theStandard, and are preceded by a SUPERSEDED R
22、EQUIREMENTS notice.New 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 applicant specifically requests that the product be judged under the c
23、urrent 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 and Follow-Up Services after the effectivedate, and understanding of this should be signified in writing
24、.Copyright 2006 Underwriters Laboratories Inc.MAY 5, 2006 UL 745-2-31tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis Standard consists of pages dated as shown in the following checklist:Page Date1-12May5,2006A1-A2 May5,2006B1-B2 May5,2
25、006C1-C2 May5,2006D1-D2 May5,2006E1-E2 May5,2006F1-F2 May5,2006G1-G2May5,2006H1-H2 May5,2006MAY 5, 2006 UL 745-2-31 tr3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMAY 5, 2006 UL 745-2-31tr4No Text on This PageUL COPYRIGHTED MATERIAL NOT AU
26、THORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULParticular Requirements for Diamond Core DrillsMarch 23, 1995(Title Page Reprinted: May 5, 2006)Canadian Standards AssociationCAN/CSA-C22.2 No. 745-2-31First EditionUnderwriters Laboratories Inc.UL 745-2-31First EditionANSI/U
27、L 745-2-31-2006UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCommitment for AmendmentsThis Standard is issued jointly by Canadian Standards Association andUnderwriters Laboratories Incorporated. Amendments to this Standard will bemade only a
28、fter processing according to the Standards writing procedures byboth Canadian Standards Association and Underwriters LaboratoriesIncorporated.ISSN 0317-5669Copyright 1995Canadian Standards AssociationAll rights reserved. No part of thispublication may be reproduced in anyform whatsoever without the
29、priorpermission of the publisher.ISBN 1-55989-777-5Copyright 1995, 2006Underwriters Laboratories Inc.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSPreface .51 Scope .92 Definitions 93 General requirement 94 General notes on tests 95
30、Rating 106 Classification 107 Marking .108 Protection against electric shock .109 Starting .1010 Input and current .1011 Heating 1012 Leakage current 1013 Radio and television interference suppression 1014 Moisture resistance .1115 Insulation resistance and electric strength .1116 Endurance .1117 Ab
31、normal operation .1118 Mechanical hazards .1119 Mechanical strength .1120 Construction .1121 Internal wiring 1122 Components .1123 Supply connection and external flexible cables and cords 1224 Terminals for external conductors .1225 Provision for earthing 1226 Screws and connections .1227 Creepage d
32、istances, clearances and distances through insulation 1228 Resistance to heat, fire and tracking 1229 Resistance to rusting 1230 Tests by manufacturers 1231 Instructions 12MAY 5, 2006 CAN/CSA-C22.2 NO. 745-2-31 UL 745-2-31 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTI
33、ON WITHOUT PERMISSION FROM ULAppendix A Thermal cut-outs and overload releasesAppendix B Electronic circuitsAppendix C Construction of safety isolating transformersAppendix D Measurement of creepage distances and clearancesAppendix E Reference standardsAppendix F Attachments and accessoriesAppendix
34、G Sequence of testsAppendix H TranslationsMAY 5, 2006CAN/CSA-C22.2 NO. 745-2-31 UL 745-2-314UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis is the common CSA and UL Standard for portable electric diamond core drills. It is the firs
35、t edition ofCSA Standard C22.2 No. 745-2-31 Safety of portable electric tools Part 2: Particular requirements fordiamond core drills and UL 745-2-31 Safety of portable electric tools Part 2: Particular requirements fordiamond core drills. It is written in SI (metric) units.This Standard was prepared
36、 by Canadian Standards Association and Underwriters Laboratories Inc. andis based on IEC Publication 745-1 (1982) Safety of hand-held motor-operated electric tools Part 1:General requirements.Where a particular clause of the general requirements Standard is not mentioned in this Standard, theclause
37、applies as far as is reasonable. Where this edition states addition, modification,orreplacement,the relevant requirement, test specification, or explanatory matter in the general requirements Standardshould be adapted accordingly.If the functions of a tool are covered by different particular Standar
38、ds, the relevant particular requirementsStandard is applied to each function separately, so far as is reasonable. If applicable, the influence of onefunction on the other is taken into account.This Standard was reviewed by the CSA Subcommittee on Portable Electric Tools of the TechnicalCommittee on
39、Consumer and Commercial Products under the jurisdiction of the Standards SteeringCommittee on the Canadian Electrical Code, Part II, and was formally approved by these Committees.This Standard was processed and reviewed in accordance with the method of development, revision andimplementation of UL S
40、tandards for safety.This Standard has been approved by the Standards Council of Canada as a National Standard of Canadaand has been approved by the American National Standards Institute (ANSI) as an American NationalStandard.CSA Effective DateThe effective date for CSA will be announced through a CS
41、A Certification Notice.Note: Although the intended primary application of this Standard is stated in its Scope, it is important tonote that it remains the responsibility of the users of the Standard to judge its suitability for their particularpurpose.UL Effective DateAs of June 1, 2007, all product
42、s Listed or Recognized by UL must comply with the requirements in thisStandard.Between June 1, 2002 and June 1, 2007, new product submittals to UL must be evaluated under allrequirements in this standard.The most recent designation of ANSI/UL 745-2-31 as an American National Standard (ANSI) occurred
43、 onMay 5, 2006. The ANSI approval for this standard does not include the Cover Page, Transmittal Pages,Title Page, or Preface.MAY 5, 2006 CAN/CSA-C22.2 NO. 745-2-31 UL 745-2-31 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis ANSI/UL Stan
44、dard for Safety, which consists of the First edition with revisions through May 5, 2006,is under continuous maintenance, whereby each revision is ANSI approved upon publication. Commentsor proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposalsshould be subm
45、itted via a Proposal Request in ULs On-Line Collaborative Standards DevelopmentSystem (CSDS) at http:/.MAY 5, 2006CAN/CSA-C22.2 NO. 745-2-31 UL 745-2-316UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis page intentionally left blank.MAY 5,
46、2006 CAN/CSA-C22.2 NO. 745-2-31 UL 745-2-31 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis page intentionally left blank.MAY 5, 2006CAN/CSA-C22.2 NO. 745-2-31 UL 745-2-318UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O
47、RDISTRIBUTION WITHOUT PERMISSION FROM UL1 ScopeThis clause of Part 1 is applicable, except as follows:1.1 Replacement:This standard applies to diamond cord drills.2 DefinitionsThis clause of Part 1 is applicable, except as follows:2.2.23 Replacement:Normal load denotes the load obtained when the dri
48、ll, placed in its intended operating position, isoperated continuously, as recommended in the instruction manual to result in the highest load.Additional definitions:2.2.101 Diamond drill denotes a tool specifically designed to make holes in materials such as concretewith a diamond core bit.It is de
49、signed to rotate, normally in a clockwise direction, at one or more speeds.3 General requirementThis clause of Part 1 is applicable.4 General notes on testsThis clause of Part 1 is applicable, except as follows:4.9 Replacement:For diamond drills which have both a mechanical means of setting different ranges of speed and anelectronic means of setting the speed within a given range, the mechanical device is adjusted to thelowest range possible, and the electronic device
