1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationHand-held motor-operated electric tools SafetyPart 2-5: Particular requirements for circular sawsBS EN 60745-2-5:2010National forewordThis British Standard is the UK implementati
2、on of EN 60745-2-5:2010. It isderived from IEC 60745-2-5:2010. It supersedes BS EN 60745-2-5:2007+A11:2009, which will be withdrawn on 1 October 2013.The CENELEC common modifications have been implemented at the appropriate places in the text and are indicated by tags (e.g. ).The UK participation in
3、 its preparation was entrusted to Technical CommitteeCPL/116, Portable motor-operated tools.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible f
4、or its correct application. BSI 2011 ISBN 978 0 580 59001 6 ICS 25.140.20; 25.140.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2011.Amendments/c
5、orrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60745-2-5:2010EUROPEAN STANDARD EN 60745-2-5 NORME EUROPENNE EUROPISCHE NORM October 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr E
6、lektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60745-2-5:2010 E ICS 25.140.20; 25.140.30 Supersedes EN 60745-2-5:2007 + A11:2009English version
7、Hand-held motor-operated electric tools - Safety - Part 2-5: Particular requirements for circular saws (IEC 60745-2-5:2010, modified) Outils lectroportatifs moteur - Scurit - Partie 2-5: Rgles particulires pour les scies circulaires (CEI 60745-2-5:2010, modifie) Handgefhrte motorbetriebene Elektrowe
8、rkzeuge - Sicherheit - Teil 2-5: Besondere Anforderungen fr Kreissgen (IEC 60745-2-5:2010, modifiziert) This European Standard was approved by CENELEC on 2010-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
9、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,
10、 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, Belg
11、ium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. -
12、 2 - Foreword The text of document 116/41/FDIS, future edition 5 of IEC 60745-2-5, prepared by TC 116, Safety of hand-held motor-operated electric tools, was submitted to the IEC-CENELEC parallel vote. A draft amendment, which covers common modifications towards future IEC 60745-2-5 (116/41/FDIS), w
13、as prepared by CENELEC Technical committee TC 116, Safety of hand-held motor operated electric tools. It was submitted to the formal vote. The combined texts were approved by CENELEC as EN 60745-2-5 on 2010-10-01. This European Standard supersedes EN 60745-2-5:2007 + A11:2009. Main changes include:
14、in Clause 17, Endurance: introduction of endurance tests in practical use for the guards of all types of saws; in Clause 19, Mechanical hazards: clarifications and editorial improvement in respect to the guarding; and in Annex M, Safety of working stands for operation with hand-held motor-operated e
15、lectric tools: editorial improvements. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by whi
16、ch the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-10-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2013-10-01 This European Standard is divided into two par
17、ts: 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) which could come within the scope of this standard; Part 2: Requirements for particular types of tools which either supplement or modify th
18、e requirements given in Part 1 to account for the particular hazards and characteristics of these specific tools. This European Standard has been prepared under Mandate M/396 given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC D
19、irective 2006/42/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 circular saws (EN 792-12). Warning: Oth
20、er 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. BS EN 60745-2-5:2010EN 60745-2-5:2010 (E)- 3 - This Part 2-5 is to be used in conjunction with EN
21、60745-1:2009. 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; additional annexes are lettered AA, BB, etc. Subclause
22、s, tables and figures which are additional to those in IEC 60745-2-5:2010 are prefixed “Z”. Annex ZZ has been added by CENELEC. NOTE In this standard the following print types are used: - requirements proper; in roman type - test specifications: in italic type;- explanatory matter: in smaller roman
23、type. _ Endorsement notice The text of the International Standard IEC 60745-2-5:2010 was approved by CENELEC as a European Standard with agreed common modifications. BS EN 60745-2-5:2010EN 60745-2-5:2010 (E) 4 CONTENTS 1 Scope.2 Normative references .3 Terms and definitions .64 General requirements.
24、5 General conditions for the tests 6 7 Classification8 Marking and instructions.9 Protection against access to live parts9H110 Starting 10H111 Input and current 11H112 Heating 12H113 Leakage current . 13H114 Moisture resistance 14H115 Electric strength . 15H116 Overload protection of transformers an
25、d associated circuits . 16H117 Endurance118 Abnormal operation 119 Mechanical hazards 19H120 Mechanical strength . 20H21 Construction. 21H22 Internal wiring.23 Components .24 Supply connection and external flexible cords 25 Terminals for external conductors.26 Provision for earthing .27 Screws and c
26、onnections.28 Creepage distances, clearances and distances through insulation29 Resistance to heat, fire and tracking.2130 Resistance to rusting31 Radiation, toxicity and similar hazards 31HAnnexes .Annex K (normative) Battery tools and battery packs .Annex L (normative) Battery tools and battery pa
27、cks provided with mains connection or non-isolated sources.Annex M (normative) Safety of working stands for operation with hand-held motor-operated electric tools 35H3Annex AA (normative) Additional requirements for saws with a riving knife 36H4Annex BB (normative) Additional requirements for lower
28、guards for saws without a riving knife BibliographyEnvironmental requirements 51 Annex ZZ (informative) Coverage of Essential Requirements of Directive 2006/42/EC .52BS EN 60745-2-5:2010EN 60745-2-5:2010 (E)6 6 7 7 7 9 9 2 2 2 2 2 2 2 2 3 5 20 20 21 21 21 21 21 21 21 21 22 31 31 31 2 7 50 5 5 Figure
29、 101 Circular saw with outer pendulum guard. 39H2Figure 102 Circular saw with inner pendulum guard . 40H2Figure 103 Circular saw with tow guard 41H2Figure 104 Plunge type saw. 42H2Figure 105 Test probe a 43H2Figure 106 Use of test probe a on circular saw guards . 44H2Figure 107 Distance from the gri
30、pping surface to the blades cutting zone . 45H2Figure 108 Height restriction of the viewing aperture (see 19.101.2.1) . 46H25Figure 109 Distance from the edge of the lateral side of the upper guard to the base plate . 47H2Figure 110 Test probe b . 48H2Figure 111 Accessibility to the front cutting ed
31、ge zone. 49H27Figure 112 Blade exposure angle of the lower guard 50H2Figure 113 Principal dimensions of the base plate . 51H2Figure 114 Flange characteristics 52H2Figure M.301 Saw table fitted with hand-held circular saw .Figure M.302 Testing the stability of the guard support 54H4Figure M.303 Saw t
32、able dimensions.55H4Figure M.304 Position of the outfeed end of the rip fence.56H4Figure M.305 Rip fence in low position.57H 4Figure M.306 Examples of shapes of slot for locating cross-cut fence on saw tables58H4Figure M.307 Examples of push stick and push blocks.59H4Figure AA.101 Riving knife stabi
33、lity test .60H4Figure AA.102 Riving knife adjustment.61H4Table M.301 Riving knife testing strength of riving knife62H3Figure Z101 Positions of transducers for circular saws .BS EN 60745-2-5:2010EN 60745-2-5:2010 (E)2 2 2 2 4 6 6 8 8 9 30 41 2 3 5 6 9 9 6 4 43 3 6 HAND-HELD MOTOR-OPERATED ELECTRIC TO
34、OLS SAFETY Part 2-5: Particular requirements for circular saws 1 Scope This clause of Part 1 is applicable, except as follows: Addition: This standard applies to circular saws, which hereinafter will be referred to as saws. This standard does not apply to saws designed for use with abrasive wheels.
35、NOTE Saws designed for use with abrasive wheels as cut-off machines are covered by IEC 60745-2-22. 2 Normative references 3 Terms and 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 rota
36、ting toothed blade 3.102 cutting edge zone the outer 20 % of the blades radius 3.103 base plate the part supporting the saw on the material being cut (see Figure 113) 3.104 lower guard movable blade-covering device which, in the closed or rest position, is mainly situated below the base plate 3.105
37、upper guard fixed and/or movable cover of the blade situated above the base 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 This clause of Part 1 is applicable, except as follows: Addi
38、tion: EN 847-1:1997 1), Tools for woodworking Safety requirements Part 1: Milling tools and circular saw blades 1)Superseded by EN 847-1:2005, Tools for woodworking Safety requirements Part 1: Milling tools and circular saw blades. BS EN 60745-2-5:2010EN 60745-2-5:2010 (E) 7 3.107 saw with outer pen
39、dulum 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 the upper guard (see Figur
40、e 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 General requirements This claus
41、e 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 suspended in such a way as to correspond to normal use. 6.1.2.5 Modification
42、: Circular saws are tested at no-load. 6.2 Vibration 6.2.4.2 Location of measurement Addition: Figure Z101 shows the positions on the main handle and the auxiliary handle, if applicable. 6.2.6.3 Operating conditions Addition: Circular saws intended to cut wood are tested under load observing the con
43、ditions shown in Table Z101. NOTE The values for sawing wood are also representative for sawing plastics. Circular saws intended to cut metal are tested under load observing the conditions shown in Table Z102. Circular saws with speed setting devices shall be adjusted to the settings to cut the work
44、 piece material required in the test. BS EN 60745-2-5:2010EN 60745-2-5:2010 (E)Table Z101 Operating conditions for circular saws cutting wood Orientation Cutting a horizontal piece of chipboard with minimum dimensions 800 mm x 600 mm and a thickness depending on maximum cutting depth of the circular
45、 saw: - maximum cutting depth 40 mm: chipboard thickness 19 mm; - maximum cutting depth 40 mm: chipboard thickness 38 mm. The board shall be firmly fixed by screws, clamps air cylinders or the like to a test bench using resilient material. It shall be mounted so that it does not have any significant
46、 resonance in the frequency range that can influence the test result. The board excess end shall be 250 mm from the clamped area and shall be readjusted at the beginning of each series of tests. Tool bit New blade as recommended by the manufacturer for cutting chipboard. Feed force Just sufficient t
47、o cut at a brisk pace. Equal force shall be applied to both handles, if applicable. Excessive grip forces shall be avoided. Test cycle One test cycle is given by cutting off one approximately 10 mm wide strip (set by rip fence if available) across the 600 mm width of the chipboard. The measurement s
48、tarts when the blade enters the wood and finishes when the blade leaves the wood. Table Z102 Operating conditions for circular saws cutting metal Orientation Cutting a horizontal piece of sheet aluminium with the minimum length of 600 mm, a width of 300 mm and a thickness of 3 mm. The work piece sha
49、ll be supported on resilient material and firmly fixed by screws, clamps, air cylinders or the like to a test rig. The metal sheet excess shall be at least 100 mm from the clamped area and shall be readjusted at the beginning of each series of tests, which consists of five test cycles. Tool bit New saw blade as specified for sawing aluminium. Feed force Just sufficient to cut at a brisk pace. Equal force shall be applied to both handles, i
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