BS EN 50144-2-3-2002 手持电动工具的安全性.对研磨机、圆盘砂轮和抛光机的特殊要求.pdf

BRITISH STANDARD BS EN 50144-2-3:2002 Incorporating Amendments Nos. 1 and 2 Safety of hand-held electric motor operated tools Part 2-3: Particular requirements for grinders, disk type sanders and polishers The European Standard EN 50144-2-3:2002, with the incorporation of amendments A1:2002 and A2:2003, has the status of a British Standard ICS 25.080.50; 25.140.20 ? Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 50144-2-3:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 9 October 2002 © BSI 5 September 2003 ISBN 0 580 40540 0 National foreword This British Standard is the official English language version of EN 50144-2-3:2002, including amendments A1:2002 and A2:2003. It supersedes BS 2769-2-3:1984 which will be withdrawn on 2005-03-01. The start and finish of text introduced or altered by CEN amendment A1 is indicated in the text by tags ?. Tags indicating changes to text carry the number of the amendment. For example, text altered by CEN amendment A1 is indicated by ?. The UK participation in its preparation was entrusted by Technical Committee CPL/61, Safety of household and similar electrical appliances, to Subcommittee CPL/61/6, Portable motor operated tools, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “ International Standards Correspondence Index” , or by using the “ Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 31 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 1434711 March 2003See national foreword 145615 September 2003See national foreword Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 50144-2-3 NORME EUROPÉENNE July 2002 EUROPÄISCHE NORM + A1 December 2002 + A2 April 2003 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50144-2-3:2002 + A1:2002 + A2:2003 E ICS 25.080.50; 25.140.20 Supersedes HD 400.2C S1:1980 + A1:1991 English version Safety of hand-held electric motor operated tools ? Part 2-3: Particular requirements for grinders, disk type sanders and polishers (includes amendments A1:2002 and A2:2003) Sécurité des outils électroportatifs à moteur ? Partie 2-3: Règles particulières pour les meuleuses, ponceuses du type à disque et lustreuses (inclut les amendements A1:2002 et A2:2003) Sicherheit handgeführter motorbetriebener Elektrowerkzeuge ? Teil 2-3: Besondere Anforderungen an Schleifer, Polierer und Schleifer mit Schleifblatt (enthält Änderungen A1:2002 und A2:2003) This European Standard was approved by CENELEC on 2002-03-05. Amendment A1 was approved by CENELEC on 2002-11-01 and amendment A2 was approved by CENELEC on 2003-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 50144-2-3:2002 - 2 - Foreword This European Standard has been prepared by Technical Committee CENELEC TC 61F, Safety of hand-held and transportable motor-operated electric tools. The text of the draft was submitted to the formal vote in August 2001 and was approved by CENELEC as EN 50144-2-3 on 2001-03-05. This European Standard supersedes HD 400.2C S1:1980 + A1:1991. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-03-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-03-01 This standard is divided into two parts: Part 1: General requirements which are common to most hand-held electric motor operated tools (for the purpose of this standard referred to simply as tools). Part 2: Requirements for particular types of tools which either supplement or modify the requirements given in Part 1 to account for the particular hazards and characteristics of these specific tools. This European Standard has been prepared under a mandate given to CEN/CENELEC by European Commission and the European Free Trade Association and supports the essential health and safety requirements of the Machinery Directive. Compliance with the clauses of Part 1 together with this part 2 provides one means of conforming with the specified essential health and safety requirements of the Directive. For noise and vibration, this standard covers the requirements for their measurement, the provisions of information arising from these measurements and the provisions of information about the personal protective equipment required. Specific requirements for the reduction of the risks arising from noise and vibration through the design of the tool are not given as this reflects the current state of the art. As with any standards technical progress will be kept under review so that any developments can be taken into account. CEN TC/255 has produced standards for non electrically driven grinders (EN 792-7 and EN 792-8). Warning: Other requirements and other EC Directives can be applicable to the products falling within the scope of this standard. This standard follows the overall requirements of EN 292-1 and EN 292-2. Subclauses, tables and figures which are additional to those in Part 1 are numbered starting from 101. Additional annexes are labelled AA, BB, etc. NOTEIn this standard the following print types are used: - Requirements proper; - Test specifications; - Explanatory matter. Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ? - 3 -EN 50144-2-3:2002 Foreword to amendment A1 This amendment to the European Standard EN 50144-2-3:2002 was prepared by the Technical Committee CENELEC TC 61F, Safety of hand-held and transportable motor-operated electric tools. The text of the draft was submitted to the formal vote and was approved by CENELEC as amendment A1 to EN 50144-2-3:2002 on 2002-11-01. The following dates were fixed: latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-03-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2005-03-01 Foreword to amendment A2 This amendment was prepared by the Technical Committee CENELEC TC 61F, Safety of hand-held and transportable motor-operated electric tools. The text of the draft was submitted to the formal vote and was approved by CENELEC as amendment A2 to EN 50144-2-3:2002 on 2003-04-01. The following dates were fixed: latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-04-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2006-04-01 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ? EN 50144-2-3:2002 - 4 - Contents 1 Scope.6 2 Definitions 6 3 General requirements.7 4 General conditions for the tests7 5 Rating.7 6 Classification8 7 Marking and information for use.8 8 Protection against electric shock9 9 Starting 9 10 Input and current9 11 Heating.9 12 Leakage current .9 13 Environmental requirements 10 14 Moisture resistance13 15 Insulation resistance and electric strength .14 16 Endurance14 17 Abnormal operation14 18 Mechanical hazards .14 19 Mechanical strength.17 20 Construction.17 21 Components.18 22 Internal wiring.18 23 Supply connection and external flexible cables and cords.18 24 Terminals for external conductors18 25 Provision for earthing .18 26 Screws and connections 18 27 Creepage distances, clearances and distances through insulation18 28 Resistance to heat, fire and tracking18 29 Resistance to rusting18 30 Radiation18 Annex AA (normative) Design and construction of guards.22 Annex BB (normative) Flanges dimensional requirements.26 Figure 101 Test fixture for grinders.19 Figure 102 Artificial grinding wheel.20 Figure AA.1 Guard for plain grinding wheel with front curtain.23 Figure AA.2 Guard for reinforced plain grinding wheel without front curtain.23 Figure AA.3 Adjustable guard for straight cup wheels24 Figure AA.4 Guard with front lip24 Figure AA.5 Guard with curtain segment for reinforced depressed-centre and cutting-off wheels .25 Figure BB.1 Flanges for plain grinding wheels (type 1)29 Figure BB.2 Flanges for two-sided tapered wheels (type 4).29 Figure BB.3 Flange for cup wheels without threaded insert (type 6 and 11) 30 Figure BB.4 Unrecessed flange for cup wheels with threaded inserts (type 6 and 11).30 Figure BB.5 Unrecessed flange for cones and plugs with threaded inserts (type 16, 18, 18R and 19)31 Figure BB.6 Flanges for reinforced depressed-centre wheels (type 27, 28 and 42).31 Table 101 Test conditions for straight grinders.12 Table 102 Artificial wheel dimensions for straight grinders.12 Table 103 Test conditions for angle grinders13 Table 104 Artificial wheel dimensions for angle grinders13 Table 105 Test conditions for polishers13 Table 106 Test conditions for disc-type sanders 13 Table 107 Torques for testing of flanges16 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ? - 5 -EN 50144-2-3:2002 Table BB.1 Dimensions of flanges for plain grinding wheels type 1 .26 Table BB.2 Dimensions of flanges for grinding wheels type 426 Table BB.3 Dimensions of flanges for cup wheels type 6 and 11.27 Table BB.4 Dimensions of flanges for cup wheels type 6 and 11 with threaded inserts.27 Table BB.5 Dimensions of flanges for plugs and cones type 16, 18, 18R and 19 27 Table BB.6 Dimensions of flanges for type 27, 28 and 42 grinding wheels28 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ? EN 50144-2-3:2002 - 6 - 1 Scope This clause of Part 1 is applicable except as follows: Addition: This standard applies to grinders, with maximum rated rotational speed corresponding to a peripheral speed of 80 m/s, polishers and disc-type sanders. This standard does not give requirements for the reduction of the risks arising from noise and vibration. NOTE Random orbit sanders are covered by EN 50144-2-4. 2 Definitions This clause of Part 1 is applicable except as follows: 2.2.18Replacement: 2.2.18 normal load load obtained when the tool is operated continuously for a period of 30 min, the torque applied to the spindle being: 1,5 D1,5L?10-5 Nm for straight grinders and straight polishers with a wheel diameter not exceeding 55 mm in the new condition, 2,5 D1,5L?10-5 Nm for other straight grinders and straight polishers, 1,3 D3?10-7 Nm for angle grinders, angle polishers, disc-type sanders and vertical grinders, 1,5 D1,5?10-4 Nm for valve-seat grinders, where D is the diameter, in millimeters, of the grinding wheel or disc, and L the width, in millimeters, of the grinding or polishing wheel in the new condition. The normal load is based on the rated voltage or on the upper limit of the rated voltage range. Additional subclauses: 2.2.101 grinder abrading tool driving a rotating spindle on which a bonded abrasive product is mounted NOTE A grinder equipped with a cutting-off wheel is often called a cutting-off machine. 2.2.102 straight grinder tool, with the driving spindle in the direction of the motor shaft, usually equipped with a rotating abrasive wheel, which is intended for peripheral grinding. A straight grinder with collet or chuck is intended for use with mounted wheels, points or burrs 2.2.103 vertical grinder tool with the driving spindle in the direction of motor-shaft, equipped with a rotating abrasive wheel or disc, which is intended for peripheral (cut-off) and lateral grinding Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Tue May 08 12:20:39 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ? - 7 -EN 50144-2-3:2002 2.2.104 angle grinder tool, with the driving spindle at a right angle to the motor shaft, equipped with a rotating abrasive wheel or disc, which is intended for peripheral (cut-off) and lateral grinding 2.2.105 disc-type sander tool, constructed like an angle or vertical grinder, intended for lateral sandi