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1、BRITISH STANDARD BS EN 60745-2-3:2007 Hand-held motor-operated electric tools Safety Part 2-3: Particular requirements for grinders, polishers and disk-type sanders The European Standard EN 60745-2-3:2007 has the status of a British Standard ICS 25.080.50; 25.140.20 ? Licensed Copy: London South Ban
2、k University, London South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 60745-2-3:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007 ISBN 978 0 580 54027 1 National foreword Thi
3、s British Standard was published by BSI. It is the UK implementation of EN 60745-2-3:2007. It was derived by CENELEC from IEC 60745-2-3:2006. It supersedes BS EN 50144-2-3:2002, which will be withdrawn on 1 December 2009. The CENELEC common modifications have been implemented at the appropriate plac
4、es in the text and are indicated by tags (e.g. ). 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. A list of organizations represented on this committee
5、 can be obtained on request to its secretary. BSI, as a member of CENELEC, is obliged to publish EN 60745-2-3 as a British Standard. However, attention is drawn to the fact that during the development of this European Standard, the UK committee voted against its approval as a European Standard. The
6、UK committee does not support the use of lock-on switches for grinders above 155 mm and as a result submitted a negative vote. The vibration measured by this standard is for grinding applications only. Other applications are being considered and will be included in later amended versions of this sta
7、ndard. 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 cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy
8、: London South Bank University, London South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 60745-2-3 NORME EUROPENNE EUROPISCHE NORM March 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electr
9、otechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60745-2-3:2007 E ICS 25.140.20 Supersedes EN 50144-2-3:200
10、2 + A1:2002 + A2:2003 English version Hand-held motor-operated electric tools - Safety - Part 2-3: Particular requirements for grinders, polishers and disk-type sanders (IEC 60745-2-3:2006, modified) Outils lectroportatifs moteur - Scurit - Partie 2-3: Rgles particulires pour les meuleuses, lustreus
11、es et ponceuses du type disque (CEI 60745-2-3:2006, modifie) Handgefhrte motorbetriebene Elektrowerkzeuge - Sicherheit - Teil 2-3: Besondere Anforderungen fr Schleifer, Polierer und Schleifer mit Schleifblatt (IEC 60745-2-3:2006, modifiziert) This European Standard was approved by CENELEC on 2006-12
12、-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 obta
13、ined 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 Cent
14、ral Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, M
15、alta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 60745-2-3:2007 2 Foreword The
16、text of the International Standard IEC 60745-2-3:2006, prepared by SC 61F, Safety of hand-held motor-operated electric tools, of IEC TC 61, Safety of household and similar electrical appliances, together with the common modifications prepared by the Technical Committee CENELEC TC 61F, Safety of hand
17、-held and transportable motor-operated electric tools, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 60745-2-3 on 2006-12-01. This European Standard supersedes EN 50144-2-3:2002 + A1:2002 + A2:2003. The following dates were fixed: latest date by which the EN has
18、to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-12-01 This standard is divided into two parts: Part 1: General requirements whic
19、h are common to most hand-held electric motor operated tools (for the purpose of this standard referred to simply as tools) which could come within the scope of this standard; Part 2: Requirements for particular types of tools which either supplement or modify the requirements given in Part 1 to acc
20、ount for the particular hazards and characteristics of these specific tools. This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directive 98/37/EC (Machinery Directive),
21、amended by Directive 98/79/EC. See Annex ZZ. Compliance with the clauses of Part 1 together with this Part 2 provides one means of conforming with the essential health and safety requirements of the Directive concerned. CEN/TC 255 is producing standards for non-electric grinders (EN 792-7), polisher
22、s and sanders (EN 792-8) and die grinders (EN 792-9). 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 ISO 12100-1 and EN ISO 12100-2. This Part 2-3 is to be used in c
23、onjunction with EN 60745-1:2006. When this standard states “addition“, “modification“ or “replacement“, the relevant text in Part 1 is to be adapted accordingly. Subclauses, tables and figures which are additional to those in Part 1 are numbered starting from 101. Licensed Copy: London South Bank Un
24、iversity, London South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 EN 60745-2-3:2007 Subclauses, tables and figures which are additional to those in IEC 60745-2-3:2006 are prefixed “Z”. Annexes ZA and ZZ have been added by CENELEC. NOTE In this standard the foll
25、owing print types are used: - Requirements proper; - Test specifications; - Explanatory matter. Endorsement notice The text of the International Standard IEC 60745-2-3:2006 was approved by CENELEC as a European Standard with agreed common modifications. Licensed Copy: London South Bank University, L
26、ondon South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 60745-2-3:2007 4 CONTENTS 1 Scope 6 2 Normative references .6 3 Definitions6 4 General requirements .8 5 General conditions for the tests 9 6 Environmental requirements .9 7 Classification13 8 Marking and
27、instructions.13 9 Protection against access to live parts 18 10 Starting 18 11 Input and current 18 12 Heating 18 13 Leakage current .18 14 Moisture resistance 18 15 Electric strength .18 16 Overload protection of transformers and associated circuits 19 17 Endurance19 18 Abnormal operation 19 19 Mec
28、hanical hazards19 20 Mechanical strength .23 21 Construction.25 22 Internal wiring.26 23 Components.26 24 Supply connection and external flexible cords .26 25 Terminals for external conductors .26 26 Provision for earthing26 27 Screws and connections .26 28 Creepage distances, clearances and distanc
29、es through insulation .27 29 Resistance to heat, fire and tracking .27 30 Resistance to rusting27 31 Radiation, toxicity and similar hazards 27 Annexes .42 Annex K (normative) Battery tools and battery packs 42 Annex L (normative) Battery tools and battery packs provided with mains connection or non
30、-isolated sources.42 Annex AA (informative) Material and thickness of guards42 Annex ZA (normative) Normative references to international publications with their corresponding European publications44 Annex ZZ (informative) Coverage of Essential Requirements of EC Directives 45 Licensed Copy: London
31、South Bank University, London South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 EN 60745-2-3:2007 Bibliography .43 Figure 101 Typical guard designs a) and b) for wheel Types 1, 41 and 42 .28 Figure 102 Typical guard design with front lip for wheel Types 27, 28 a
32、nd 2929 Figure 103 Adjustable guard for cup wheel Types 6 and 11.30 Figure 104 Principal dimensions of flanges.31 Figure 105 Dimensions of an adaptor backing flange 31 Figure 106 Guard strength test: explanation of guard positions .33 Figure 107 Guard strength test: preparation of the grinder 34 Fig
33、ure 108 Guard strength test: preparation of cup wheel Types 6 and 11.34 Figure 109 Guard strength test: straight grinder with additional masses 35 Figure 110 Guard strength test box 37 Figure Z101 Working positions of operator and application of force.38 Figure Z102 Artificial grinding wheel for ang
34、le grinding .39 Figure Z103 Artificial grinding wheel for straight grinding 40 Figure Z104 Positions of transducers for straight grinders.41 Figure Z105 Positions of transducers for angle grinders41 Figure Z106 Positions of transducers for polishers and disk-type sanders .41 Table 101 Torques for te
35、sting flanges.22 Table 102 Typical pre-cut length ranges for standard wheel dimensions24 Table Z101 Test conditions for angle grinding.10 Table Z102 Dimensions of the artificial wheel of Figure Z102 for angle grinding 10 Table Z103 Feed force.11 Table Z104 Test conditions for straight grinding11 Tab
36、le Z105 Dimensions of the artificial wheel of Figure Z103 for straight grinding .11 Table Z106 Test conditions for polishing.12 Table Z107 Test conditions for disc-type sanding .12 Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontro
37、lled Copy, (c) BSI EN 60745-2-3:2007 6 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS SAFETY Part 2-3: Particular requirements for grinders, polishers and disk-type sanders 1 Scope This clause of Part 1 is applicable, except as follows: 1.1 Addition: This standard applies to grinders, with a rated speed no
38、t exceeding a peripheral speed of the accessory of 80 m/s at rated capacity, polishers and disk-type sanders, including angle, straight and vertical. This standard applies to tools with a rated capacity not exceeding 230 mm. This standard does not apply to random-orbit polishers and random-orbit san
39、ders. These are covered by IEC 60745-2-4. 2 Normative references This clause of Part 1 is applicable except as follows: Addition: ISO 603-12:1999, Bonded abrasive products Dimensions Part 12: Grinding wheels for deburring and fettling on a straight grinder ISO 603-14:1999, Bonded abrasive products D
40、imensions Part 14: Grinding wheels for deburring and fettling/snagging on an angle grinder ISO 603-16:1999, Bonded abrasive products Dimensions Part 16: Grinding wheels for cutting-off on hand held power tools ANSI B7.1:2000, Safety Requirements for the Use, Care and Protection of Abrasive Wheels 3
41、Definitions This clause of Part 1 is applicable, except as follows: 3.101 blotter thin piece of an easily compressible material, between the abrasive product and flange 3.102 disk-type sander tool, constructed like a grinder, intended for sanding Licensed Copy: London South Bank University, London S
42、outh Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 7 EN 60745-2-3:2007 3.102.1 angle disk-type sander tool with the rotating spindle at a right angle to the motor shaft, intended for lateral sanding 3.102.2 straight disk-type sander tool with the rotating spindle in
43、-line with the motor shaft, intended for peripheral or lateral sanding 3.102.3 vertical disk-type sander tool with the rotating spindle in-line with the motor shaft, intended for lateral sanding 3.103 flange collar, disc or plate between or against which wheels are mounted 3.103.1 unrecessed flange
44、flange fixed to the machine spindle having an unrecessed flat surface against which a threaded hole abrasive product is screwed, e.g. a cup wheel, a cone or a plug 3.103.2 recessed flange flange fixed to the machine spindle having a recessed flat surface 3.103.3 flange outside diameter outside diame
45、ter of the contact surface of a flange 3.103.4 backing flange contacts and provides support to the back side of the wheel and is located on the spindle between wheel and tool 3.103.5 locking flange supports the front side of the wheel and secures and clamps the wheel to the spindle and the backing f
46、lange 3.104 grinder tool driving a rotating spindle on which a bonded abrasive product is mounted 3.104.1 angle grinder tool with the rotating spindle at a right angle to the motor shaft, intended for peripheral and lateral grinding 3.104.2 straight grinder tool with the rotating spindle in-line wit
47、h the motor shaft, either equipped with an abrasive wheel intended for peripheral grinding or equipped with a collet or chuck intended for use with mounted wheels, points or burrs Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:09:31 GMT+00:00 2007, Uncontrol
48、led Copy, (c) BSI EN 60745-2-3:2007 8 3.104.3 vertical grinder tool with the rotating spindle in-line with the motor shaft, intended for lateral grinding 3.105 mounted wheels various shapes and sizes that may be either organic or inorganic bonded abrasives and are mounted on a mandrel or threaded on
49、to a mandrel 3.106 polisher tool equipped with a rotating disk or pad intended for polishing 3.106.1 angle polisher tool with the rotating spindle at a right angle to the motor shaft, intended for peripheral and lateral polishing 3.106.2 straight polisher tool with the rotating spindle in-line with the motor shaft, intended for peripheral polishing 3.106.3 vertical polisher