UL 745-2-3-1995 磨床 磨光机和沙园盘特殊要求.pdf

UL Underwriters Laboratories lnc. A not-for-profit organizaiion dedicated to public safety t, and committed lo quality service O February 18, 1997 Revision pages for Standard for Particular Requirements for Grinders, Polishers, and Disk-Type Sanders UL 745-2-3, First Edition Attached to this distribution notice is a reprinted title page for the First edition of UL 745-23. As indicated on the title page (page 1 and 2), 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 text of this ANSI/UL Standard. Revised and/or additional pages may be issued from time to time. With the inclusion of the accompanying material, the standard consists o f pages dated as shown in the fdlowing checklist: Page Date 1,2 . March 23, 1995 (Reprinted: February 18, 1997) 3,4 . March23,1995 5.6 . February18,1997 7-18 . March23,1995 COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services S T D * U L 7q5-2-3-ENGL 1775 W 9275775 Ob77b38 553 Canadian Standards Association First Edition CANICSA-C22.2 NO. 745-2-3 Underwriters Laboratories Inc. First Edition UL 745-2-3 Particular Requirements for Grinders, Polishers and Disk-Type Sanders March 23, 1995 (Title Page Reprinted: February 18, 1997) Approved by Standards Council o f canada American Nalional Standard ANSI/UL 7452-3-1996 COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services This PDF Standard downloaded from e Commitment for Amendments This Standard is issued jointly by Canadian Standards Association and Underwriters Laboratories Incorporated. Amendments to this Standard will be made only after processing according to the Standards writing procedures by both Canadian Standards Association and Underwriters Laboratories Incorporated. Approval as an American National Standard (ANSI) covers the numbered paragraphs on pages dated March 23, 1995. These pages should not be discarded when revised or additional pages are issued if it is desired to retain the ANSI approved text. ISSN 031 7-5669 ISBN 1-55989-766-X Copyright * 1995 Canadian Standards Association Laboratories Incorporated All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior permission of the publisher. Copyright * 1995, 1997 Underwriters COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services February 18,1997 CSA422.2 NO. 745-2-3 UL 745-2-3 5 Preface This is the common CSA and UL Standard for portable electric grinders, polishers and disk-type sanders. It is the first edition of CSA Standard C22.2 No. 745-2-3 Safety of portable electric tools Part 2: Particular requirements for grinders, polishers and disk-type sanders and UL 745-2-3 Safety of portable electric tools Part 2: Particular requirements for grinders, polishers and disk-type sanders. It is written in SI (metric) tinkc. This Standard was prepared by Canadian Standards Association and Underwriters Laboratories Inc. This common CSA and UL Standard is based on IEC Publication 745-2-3 (1984) Part 2 : Particular requirements for grinders, polishers and disk-fype sanders. Where Canadian and US deviations have necessitated the deletion of IEC Publication 745-2-3 text, the IEC text has been retained but has been over-stricken to indicate it as nonmandatory. Text added to IEC Publication 745-2-3 as mandatory has been redlined (shaded) including, where feasible, Tables and Figures. Where a particular clause of the general requirements Standard is not mentioned in this Standard, the clause applies as far as is reasonable. Where this edition states addition, modification, or replacement, the relevant requirement, test specification, or explanatory matter in the general requirements Standard should be adapted accordingly. If the functions of a tool are covered by different particular Standards, the relevant particular requirements Standard is applied to each function separately, so far as is reasonable. If applicable, the influence of one function on the other is taken into account. This Standard was reviewed by the CSA Subcommittee on Portable Electric Tools of the Technical Committee on Consumer and Commercial Products under the jurisdiction of the Standards Steering Committee 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 and implementation of UL Standards for safety. This Standard has been approved by the Standards Council of Canada as a National Standard of Canada and has been approved by the American National Standards Institute (ANSI) as an American National Standard. March 23, 1995 UL Effective Date As of June 1, 2007, all products Listed or Recognized by UL must comply with the requirements in this Standard. Between June 1,2002 and June 1,2007, new product submittals to UL must be evaluated under all requirements in this standard. Between March 23, 1995 and June 1,2002, new product submittals to UL may 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 seventh edition of UL 45. COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services This PDF Standard downloaded from 6 CSA-Cz29 NO. 745-2-3 UL 745-2-3 February 18,1997 CSA Effective Date The effective date for CSA will be announced through a CSA Certification Notice. Note: Although the intended primaw application of this Standard is stated in ifs Scope, if is important to note that if remains the responsibility of the users of the Standard to judge ifs suitability for their particular purpose. COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services UL 745-2-3 95 S 9275795 0606783 536 UL 745-2-3 Particular Requirements for Grinders, Polishers and Disk- ISBN 1658897SX Type Sanders a centuiy of public safety est. 1894 COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services This PDF Standard downloaded from UL 745-2-3 95 H 9275795 Ob06782 472 H Underwriters Laboratories Inc., Northbrook, Illinois e [phone] Melville, New York. (516) 2716200 Santa Clara, California. [phone] Research Triangle Park, North Carolina. [phone] Underwriters Laboratories Inc., founded in 1894, is chartered as a not-for-profit organization without capital stock, under the laws of the State of Delaware, to establish, maintain, and operate laboratories for the examination and testing of devices, systems and materials to determine their relation to hazards to life and property, and to ascertain, define and publish standards, classifications and specifications for materials, devices, products, equipment, constructions, methods, and systems affecting such hazards. IrL Standards for Safety are developed under a procedure which provides for participation and comment from the affected public as well as industry. The procedure takes into consideration a survey of known existing standards and the needs and opinions of a wide variety of interests concerned with the subject matter of the standard. Thus manufacturers, consumers, individuals associated with consumer-oriented organizations, academicians, government officials, industrial and commercial users, inspection authorities, insurance interests and others provide input to UL in the formulating of UL Standards for Safety, to keep them consonant with social and technological advances. A not-for-profit organization dedicated to public safety and committed to quality service COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services UL 745-2-3 75 I 9275775 Ob06783 307 Underwriters Laboratories 1nc.B A not-for-profit organization dedicated to public safety and committed to quality service March 23, 1995 Standard for Particular Requirements for Grinders, Polishers, and Disk-Type Sanders UL 745-2-3, First Edition Accompanying this transmittal notice is a copy of the First edition of UL 745-2-3. THIS EDITION OF THE STANDARD BECOMES EFFECTIVE JUNE 1, 2002 FOR NEW PRODUCT SUBMITTALS AND JUNE 1,2007 FOR ALL PRODUCTS LISTED OR RECOGNIZED BY UL. New product submittals made prior to a specified future effective date will be judged under all of the requirements in this standard unless the applicant specifically requests that the product be judged under the current requirements. However, should the applicant elect this option, it should be noted that compliance with all the requirements in this standard will be required as a condition of continued Listing, Recognition, and Follow-Up Services after the effective date and understanding of this should be signified in writing. The requirements in this standard are substantially in accordance with ULs bulletin on this subject dated July 25, 1994. This bulletin is now obsolete and may be discarded. Revised and/or additional pages may be issued from time to time. COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services This PDF Standard downloaded from Canadian Standards Association First Edition First Edition Underwriters Laboratories Inc. CAN/CSA-C22.2 NO. 745-2-3 UL 745-2-3 Particular Requirements for Grinders, Polishers and Disk-Type Sanders March 23, 1995 Approved Standards Councii of canada by COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services UL 745-2-3 95 9275795 0606785 LL Commitment for Amendments This Standard is issued jointly by Canadian Standards Association and Underwriters Laboratories Incorporated. Amendments to this Standard will be made only after processing according to the Standards writing procedures by both Canadian Standards Association and Underwriters Laboratories Incorporated. ISSN 031 7-5669 ISBN 1-55989-766-X Copyright 1995 Canadian Standards Copyright 1995 Undentfriters Association Laboratories Incorporated Inc. All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior permission of the publisher. COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services This PDF Standard downloaded from UL 745-2-3 95 7275795 060b78h O18 March 23. 1995 CSA-C22.2 NO . 745-2-3 + UL 745-2-3 3 Contents Preface . 5 Foreword (CSA) . 7 Foreword (UL) . 9 1 . Scope . 11 2 . Definitions . 11 3 . General requirement . 11 4 . General notes on tests . 11 5 . Rating . 11 6 . Classification . 12 7 . Marking . 12 8 . Protection against electric shock . 13 9 . Starting . 13 10 . Inputand current . 13 11 . Heating . 13 12 . Leakagecurrent . 13 13 . Radio and television interference suppression . 13 14 . Moisture resistance . 13 15 . Insulation resistance and electric strength . 13 16 . Endurance . 13 17 . Abnormal operation . 13 18 . Mechanicalhazards . 14 19 . Mechanicalstrength . 14 20 . Construction . 14 COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services UL 745-2-3 95 9275795 0606787 T54 m 4 CSA-C222 NO . 745-2-3 + UL 745-2-3 March 2 3 . 1995 21 . Internalwiring . 14 22 . Components . 14 23 . Supply connection and external flexible cables and cords . 15 24 . Terminals for external conductors . 15 25 . Provision for earthing . 15 26 . Screwsandconnections . 15 27 . Creepage distances. clearances and distances through insulation . 15 28 . Resistance to heat. fire and tracking . 15 29 . Resistancetorusting . 15 . 15 . 15 17 . Appendix A - Thermal cut-outs and overload releases . Appendix B . Electronic circuits . 17 Appendix C . Construction of safety isolating transformers . 17 Appendix D . Measurement of creepage distances and clearances . 17 . 17 . 17 . 17 . 18 COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services COPYRIGHT Underwriters Laboratories Inc. Licensed by Information Handling Services This PDF Standard downloaded from UL 745-2-3 95 = 9275795 0606788 990 March 23,1995 CSA-C22.2 NO. 745-2-3 UL 745-2-3 5 Preface This is the common CSA and UL Standard for portable electric grinders, polishers and disk-type sanders. It is the first edition of CSA Standard C22.2 No. 745-23 Safety of portable electric tools Part 2: Particular requirements for grinders, polishers and disk-type sanders and UL 745-2-3 Safety of portable electric tools Part 2: Particular requirements for grinders, polishers and disk-type sanders. It is written in SI (metric) units. This Standard was prepared by Canadian Standards Association and Underwriters Laboratories Inc. This common CSA and UL Standard is based on IEC Publication 745-2-3 (1984) Part 2: Particular requirements for grinders, polishers and disk-type sanders. Where Canadian and US deviations have necessitated the deletion of IEC Publication 745-2-3 text, the IEC text has been retained but has been over-stricken to indicate it as nonmandatory. Text added to IEC Publication 745-2-3 as mandatory has been redlined (shaded) including, where feasible Tables and Figures. Where a particular clause of the general requirements Standard is not mentioned in this Standard, the clause applies as far as is reasonable. Where this edition states addition, modification, or replacement, the relevant requirement, test specification, or explanatory matter in the general requirements Standard should be adapted accordingly. If the functions of a tool are covered by different particular Standards, the relevant particular requirements Standard is applied to each function separately, so far as is reasonable. If applicable, the influence of one function on the other is taken into account. This Standard was reviewed by the CSA Subcommittee on Portable Electric Tools of the Technical Committee on Consumer and Commercial Products under the jurisdiction of the Standards Steering Committee on the Canadian Electrical Code, Part II, and was formally approved