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1、BRITISH STANDARD BS EN 60745-2-5:2003 Hand-held motor-operated electric tools Safety Part 2-5: Particular requirements for circular saws The European Standard EN 60745-2-5:2003 has the status of a British Standard ICS 25.100.40 ? Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00
2、:00 2006, Uncontrolled Copy, (c) BSI BS EN 60745-2-5:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 8 August 2003 BSI 8 August 2003 ISBN 0 580 42414 6 National foreword This British Standard is the official English language version of E
3、N 60745-2-5:2003. It was derived by CENELEC from IEC 60745-2-5:2003. It supersedes BS EN 50144-2-5:2000 and BS EN 50260-2-5:2002 which will be withdrawn on 2006-04-01. The CENELEC common modifications have been implemented at the appropriate places in the text and are indicated by tags (e.g. ). WARN
4、ING: This standard allows the manufacture of circular saws with and without a riving knife. Therefore care should always be taken in selecting the appropriate style of saw depending on the working environment of the application. The attention of users of this standard is drawn to clause 8.12.101 whi
5、ch contains additional safety instructions to be provided with the product. The UK participation in its preparation was entrusted by Technical Committee CPL/61, Safety of household electrical appliances, to Subcommittee CPL/61/6, Portable motor operated tools, which has the responsibility to: A list
6、 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 Stand
7、ards 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
8、 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 d
9、evelopments 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 30, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendmen
10、ts issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 60745-2-5 NORME EUROPENNE EUROPISCHE NORM June 2003 CENELEC European Committee for Electrotechnical Standardization Comit
11、Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60745-2-5:2003 E ICS 25.100
12、.40 Supersedes EN 50144-2-5:1999 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
13、CEN and CENELEC by the 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 2-5 provides one means of conforming with the essential health and sa
14、fety requirements of the Directive concerned. CEN/TC 255 is producing standards for non-electric circular saws (EN 792-12). 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
15、of EN 292-1 and EN 292-2. This Part 2-5 is to be used in conjunction with EN 60745-1:2003. When this standard states “addition“, “modification“ or “replacement“, the relevant text in Part 1 is to be adapted accordingly. Subclauses and figures which are additional to those in Part 1 are numbered star
16、ting from 101; additional annexes are lettered AA, BB, etc. Subclauses, tables and figures which are additional to those in IEC 60745-2-5 are prefixed “Z”. NOTE In this standard, the following print types are used: - Requirements: in roman type; - Test specification: in italic type; - Notes: in smal
17、ler roman type. Page 2 EN 6074525:2003 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Endorsement notice The text of the International Standard IEC 60745-2-5:2003 was approved by CENELEC as a European Standard with agreed common modificatio
18、ns as given below. TACIFIDOM NOMMOCISNO tamroN 2ive feresecner calpeRe xet ehtt yb: Thsi clsuafo e raPt si 1 cilppaxe ,elbacsa tpe fowolls: ron lanoitiddAvitame rerefcne:e -748 NE,7991:1 Tsloo rof rowdoowki- gn ytefaS rriuqeestnem - raPt M :1sloot gnilli c dnaircralu saw sedalb ioV 6d calpeRyb e: vn
19、E 6itnemnoral iuqertnemers Thsi clsuafo e raPt si 1 cilppaxe elbacsa tpe fowolls: 4.2.1.6 Mcifidoa:noit riCcralu saws rasu dna dleh esa de scepfi.5.2.1.6 ni dei 5.2.1.6 Mcifidoa:noit riCcralu saws raset etrednu de sbo daolreivc eht gnsnoitidno swohT ni nZ elba.101 Tawas ralucric rof snoitidnoc gnita
20、repO 101Z elbs Ornoitatnei roh a gnittuCziceip latnoe fo chraobpim 008 dm x m 004m x m 91m. Tw ehorkceip,e rapaf trmo s ehttrisp c eb otufo tf, si sroppur no detesm tneiliaretif dna laixot de a cnebh Ttib loo weN sa edalb recommyb dedne m ehtfunacaruter for cuc gnitthraobpid Ff deeorce Just sufficic
21、 ot tneurb a ta tsik cape Test cycle Oset ent cyclsi e yb nevig cufo gnittf rppa enoxomiyleta m 01m wis edtri( psyb te rip fcne)e caross m 004 ehtm wifo htd c ehthraobpid 4.2.2.6 Mcifidoa:noit riCcralu saws raset etrednu de c ehtsnoitidno scepfi.5.2.1.6 ni dei Page 3 EN 6074525:2003 Licensed Copy: s
22、heffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CONTENTS 1 Scope5 2 Normative references 5 3 Definitions .5 4 General requirements 6 5 General conditions for the tests .6 6 Void.6 7 Classification.7 8 Marking and instructions7 9 Protection against access to
23、 live parts.10 10 Starting .10 11 Input and current.10 12 Heating .10 13 Leakage current 10 14 Moisture resistance.10 15 Electric strength 10 16 Overload protection of transformers and associated circuits10 17 Endurance.10 18 Abnormal operation.11 19 Mechanical hazards 11 20 Mechanical strength 15 2
24、1 Construction16 22 Internal wiring .16 23 Components16 24 Supply connection and external flexible cords .16 25 Terminals for external conductors .16 26 Provision for earthing 16 27 Screws and connections16 28 Creepage distances, clearances and distances through insulation 17 29 Resistance to heat,
25、fire and tracking .17 30 Resistance to rusting.17 31 Radiation, toxicity and similar hazards 17 Annexes .26 Annex AA (normative) Additional requirements for saws with a riving knife 26 Annex BB (normative) Additional requirements for lower guards for saws without a riving knife29 Bibliography30 Page
26、 4 EN 6074525:2003 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS SAFETY Part 2-5: Particular requirements for circular saws 1 Scope This clause of Part 1 is applicable, except as follows: 1.1 Additio
27、n: This standard applies to all types of circular saws. Circular saws hereinafter will be referred to as saws. This standard does not apply to saws used with abrasive wheels. 2 Normative references This clause of Part 1 is applicable, except as follows: EN 847-1:1997, Tools for woodworking Safety re
28、quirements Part 1: Milling tools and circular saw blades 3 Definitions This clause of Part 1 is applicable, except as follows: Additional definitions: 3.101 circular saw tool intended for cutting various materials with a rotating toothed blade 3.102 cutting edge zone the outer 20 % of the blades rad
29、ius 3.103 guide plate the part of the saw resting on the material to be cut (see Figure 113) 3.104 lower guard movable blade-covering device which, in the closed or rest position, is generally situated below the guide plate 3.105 upper guard fixed and/or movable cover of the blade situated above the
30、 guide plate 3.106 riving knife metal part placed in the plane of the saw blade with the intent of preventing the workpiece from closing on the rear part of the saw blade Page 5 EN 6074525:2003 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
31、 3.107 saw with outer pendulum guard saw having a lower guard which swings outside the upper guard (see Figure 101) 3.108 saw with inner pendulum guard saw having a lower guard which swings inside the upper guard (see Figure 102) 3.109 saw with tow guard saw having a lower guard which slides along t
32、he upper guard (see Figure 103) 3.110 kickback sudden reaction to a pinched, bound or misaligned saw blade, causing an uncontrolled saw to lift up and out of the workpiece 3.111 plunge type saw saw having only an upper guard into which the saw blade retracts when not in use (see Figure 104) 4 Genera
33、l requirements This clause of Part 1 is applicable. 5 General conditions for the tests This clause of Part 1 is applicable. 6 Environmental requirements This clause of Part 1 is applicable except as follows: 6.1.2.4 Modification: Circular saws are held and used as specified in 6.1.2.5. 6.1.2.5 Modif
34、ication: Circular saws are tested under load observing the conditions shown in Table Z101. Page 6 EN 6074525:2003 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Table Z101 Operating conditions for circular saws Orientation Cutting a horizon
35、tal piece of chipboard 800 mm 3 400 mm 3 19 mm. The workpiece, apart from the strips to be cut off, is supported on resilient material and fixed to a bench Tool bit New blade as recommended by the manufacturer for cutting chipboard Feed force Just sufficient to cut at a brisk pace Test cycle One tes
36、t cycle is given by cutting off one approximately 10 mm wide strip (set by rip fence) across the 400 mm width of the chipboard 6.2.2.4 Modification: Circular saws are tested under the conditions specified in 6.1.2.5. 7 Classification This clause of Part 1 is applicable. 8 Marking and instructions Th
37、is clause of Part 1 is applicable, except as follows: 8.1 Addition: Saws shall be marked with: direction of rotation, indicated on the tool by an arrow, raised or recessed or by any other means no less visible and indelible; rated no-load speed of the output spindle; recommended blade diameter. 8.12
38、.2 a) Addition: 101) Instructions not to use any abrasive wheels 102) For saws with riving knife the instruction shall include the following: Instructions to ensure that the riving knife is adjusted so that the distance between the riving knife and the rim of the blade is not more than 5 mm, and the
39、 rim of the blade does not extend more than 5 mm beyond the lowest edge of the riving knife. Z101) Information on the correct use of the dust collection system Z102) Advice to wear a dust mask Z103) Instruction to only use saw blades recommended Z104) Instruction to always wear hearing protection Pa
40、ge 7 EN 6074525:2003 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:07:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8.12.2 b) Addition 101) Instructions for the blade changing procedure Additional subclause: 8.12.101 The following additional safety instructions shall be given. If in Engl
41、ish they shall be verbatim and in the following order as applicable and equivalent in any other language. This part may be printed separately from the General Safety Instructions. All notes are not to be printed, they are information for the designer of the manual. 8.12.101.1 Safety instructions for
42、 all saws DANGER: a) Keep hands away from cutting area and the blade. Keep your second hand on auxiliary handle, or motor housing. If both hands are holding the saw, they cannot be cut by the blade. NOTE For circular saws with 140 mm or smaller diameter blades, the “Keep your second hand on auxiliar
43、y handle, or motor housing“ may be omitted. b) Do not reach underneath the workpiece. The guard cannot protect you from the blade below the workpiece. c) Adjust the cutting depth to the thickness of the workpiece. Less than a full tooth of the blade teeth should be visible below the workpiece. d) Ne
44、ver hold piece being cut in your hands or across your leg. Secure the workpiece to a stable platform. It is important to support the work properly to minimize body exposure, blade binding, or loss of control. e) Hold power tool by insulated gripping surfaces when performing an operation where the cu
45、tting tool may contact hidden wiring or its own cord. Contact with a “live“ wire will also make exposed metal parts of the power tool “live“ and shock the operator. f) When ripping always use a rip fence or straight edge guide. This improves the accuracy of cut and reduces the chance of blade bindin
46、g. g) Always use blades with correct size and shape (diamond versus round) of arbour holes. Blades that do not match the mounting hardware of the saw will run eccentrically, causing loss of control. h) Never use damaged or incorrect blade washers or bolt. The blade washers and bolt were specially de
47、signed for your saw, for optimum performance and safety of operation. 8.12.101.2 Further safety instructions for all saws Causes and operator prevention of kickback: kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an uncontrolled saw to lift up and out of the workp
48、iece toward the operator; when the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motor reaction drives the unit rapidly back toward the operator; if the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top
49、 surface of the wood causing the blade to climb out of the kerf and jump back toward the operator. Kickback is the result of saw misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below. a) Maintain a firm grip with both hands on the saw and position your arms to resist kickback forces. Position your body to either side of the blade, but not in line with the blade. Kickbac