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1、BRITISH STANDARD BS EN 50260-2-5:2002 Safety of hand-held battery-powered motor-operated tools and battery packs Part 2-5: Particular requirements for circular saws and circular knives The European Standard EN 50260-2-5:2002 has the status of a British Standard ICS 25.140.20 NO COPYING WITHOUT BSI P
2、ERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50260-2-5:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee,
3、 was published under the authority of the Standards Policy and Strategy Committee on 5 July 2002 BSI 5 July 2002 ISBN 0 580 40021 2 National foreword This British Standard is the official English language version of EN 50260-2-5:2002. The UK participation in its preparation was entrusted by Technica
4、l 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 Stan
5、dards 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. Thi
6、s publication does not purport to include all the necessary provisions of a contract. Users are responsible for their 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 in
7、ternational/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 E
8、N title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006,
9、 Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 50260-2-5 NORME EUROPENNE EUROPISCHE NORMMay 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35,
10、B - 1050 Brussels 2002 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50260-2-5:2002 E ICS 25.140.20 English version Safety of hand-held battery-powered motor-operated tools and battery packs Part 2-5: Particular requirements for
11、circular saws and circular knives Scurit des outils lectroportatifs aliments par batteries et des blocs de batteries Partie 2-5: Rgles particulires pour les scies circulaires et les couteaux circulaires Sicherheit fr handgefhrte akkubetriebene Elektrowerkzeuge und Akkublcke Teil 2-5: Besondere Anfor
12、derungen fr Kreissgen und Kreismesser This European Standard was approved by CENELEC on 2001-01-01. 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.
13、 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 translat
14、ion 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, Ic
15、eland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50260-2-5:2002- 2 - Foreword This European Standard has been prepared
16、by the Technical Committee CENELEC TC 61F, Hand- held and transportable electric motor-operated tools. A first draft was submitted to the unique acceptance procedure in August 1996 with positive result. A second draft incorporating the editorial comments received during the UAP and the modifications
17、 necessary to incorporate the mechanical requirements which have been agreed for hand held tools was submitted to the formal vote in September 2000 and was approved by CENELEC as EN 50260-2-5 on 2001-01-01. The following dates were fixed: -latest date by the EN has to be implemented at national leve
18、l 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 European Standard is divided into two parts: Part 1: General requirements which are common to most hand-he
19、ld battery powered motor operated tools (for the purpose of this European Standard referred to simply as tools). Part 2: Requirements for particular types of tool which either supplement or modify the requirements given in Part 1 to account for the particular hazards and characteristics of these spe
20、cific tools. This European Standard has been prepared under a mandate (M/083) given to CEN and CENELEC by the European Commission and the European Free Trade Association and supports the essential safety requirements of the Machinery Directive. Compliance with the clauses of Part 1 of this European
21、Standard together with this Part 2 provides one means of conforming with the specified essential requirements of the Directive concerned. For noise and vibration, this European Standard covers the requirements for their measurement, the provision of information arising from these measurements and th
22、e provision of information about the personal protective equipment required. Specific requirements for the reduction of the risk arising from noise and vibration through design of the tool are not given as this reflects the current state of the art. As with any standard, technical progress will be k
23、ept under review so that any developments can be taken into account. Warning: Other requirements and other EC Directives can be applicable to the products falling within the scope of this European Standard. Hand held motor-operated tools are covered by the EN 50144 series. In order to be consistent
24、with the EN 50144 series, the same order of clauses has been kept; the missing clauses are considered void. CEN/TC 255 is producing standards for non electrically driven circular saws (EN 792-12). This European Standard follows the overall requirements of EN 292-1 and EN 292-2. Subclauses, tables an
25、d figures which are additional to those in Part 1 are numbered starting from 101. NOTE: In this standard the following print types are used: -Requirements proper; -Test specifications; -Explanatory matter. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006, Uncontrolled C
26、opy, (c) BSI - 3 -EN 50260-2-5:2002 Contents 1Scope .4 2Definitions.4 3General requirements.5 4General conditions for the tests5 5Rating.5 6(void) 7Marking and information for use.5 8Protection against electric shock6 9(void) 10(void) 11(void) 12(void) 13Environmental requirements 6 14Moisture resis
27、tance 7 15Insulation resistance and electric strength.7 16(void) 17Abnormal operation7 18Mechanical hazards7 19Mechanical strength .11 20Construction .11 21Components.11 22Internal wiring.11 23(void) 24(void) 25(void) 26Screws and connections 12 27Creepage distances, clearances and distances through
28、 insulation .12 28Resistance to heat, fire and tracking .12 29Resistance to rusting12 Figures13 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50260-2-5:2002- 4 - 1Scope This clause of Part 1 is applicable except as follows: Addition: Th
29、is European Standard applies to all types of circular saws for cutting wood and similar materials and circular knives. These requirements do not cover circular saws and circular knives when mounted in a support for use as fixed tools. This European Standard does not give requirements for the design
30、of the tool to reduce the risks arising from noise and vibration. 2Definitions This clause of Part 1 is applicable except as follows: Additional definitions: 2.101 circular saw with outer pendulum guard tool the movable guard of which, for operation, swings around the upper fixed guard (see Figure 1
31、01) 2.102 circular saw with inner pendulum guard tool the movable guard of which, for operation, swings inside the upper fixed guard (see Figure 102) 2.103 circular saw with tow guard tool the movable guard of which, for operation, slides along the upper fixed guard (see Figure 103) 2.104 plunge typ
32、e circular saw tool having only a fixed upper guard into which the saw blade retracts when not in use (see Figure 104) 2.105 guide plate part constituting the plane of reference on the material to be cut 2.106 fixed guard cover linked to the motor unit which prevents access to the part of the blade
33、situated above the guide plate 2.107 movable guard cover which, in the rest position, prevents access to the part of the blade which is not covered by the fixed guard and which, in most cases, is situated below the guide plate. Plunge type circular saws have only one guard into which the saw blade r
34、etracts at the end of the sawing operation 2.108 riving knife metal part placed in the plane of the saw blade which prevents the wood from tightening onto the rear part of the saw blade and thus prevents the backward movement of the tool or jamming of the saw blade Licensed Copy: sheffieldun sheffie
35、ldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI - 5 -EN 50260-2-5:2002 3General requirements This clause of Part 1 is applicable. 4General conditions for the tests This clause of Part 1 is applicable. 5Rating This clause of Part 1 is applicable. 6Void 7Marking and informatio
36、n for use This clause of Part 1 is applicable except as follows: 7.1Addition: Circular saws and circular knives shall be marked with: -direction of rotation. This shall be clearly marked by an arrow, raised or sunk on the fixed guard, or by any other means no less visible and indelible. 7.8.1Additio
37、n: The instruction sheet shall contain also the following information: - the maximum and minimum diameter, the thickness range of the saw blades, and other characteristics of the blades which can be fitted to the tool; - the rated no-load speed of the working spindle. 7.8.2Addition: Instructions sha
38、ll also include the substance of the following: - do not use blades which are deformed or cracked; - do not use saw blades made of high speed steel; - do not use blades which do not comply with the characteristics specified in these instructions; - do not stop the blade by lateral pressure on the di
39、sc; - ensure that movable guards operate freely without jamming; - do not lock the movable guard in the open position; - ensure that any retraction mechanism of the guard system operates correctly; - for circular saws: do not use saw blades the body of which is thicker or the set of which is smaller
40、 than the thickness of the riving knife; Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50260-2-5:2002- 6 - - ensure that the riving knife is adjusted so that -the distance between the riving knife and the toothed rim of the saw blade is
41、 not more than 5 mm, -the toothed rim does not extend more than 5 mm beyond the lower edge of the riving knife. - the riving knife should always be used except when plunging in the middle of the work piece; - for circular saws for woodworking, the advice that if used in confined areas (e.g. indoors)
42、, to either use a dust protection or a dust collection equipment. 8Protection against electric shock This clause of Part 1 is applicable. 9Void 10Void 11Void 12Void 13Environmental requirements This clause of Part 1 is applicable except as follows: 13.1Void 13.2.2.4 Addition: For circular knives, th
43、e blade shall be vertical. 13.2.2.5 Replacement of paragraphs 3 and 4: Circular saws are tested under load under the conditions shown in Table 101: Table 101 Test conditions for circular saws OrientationCutting a horizontal piece of chipboard 800 mm x 400 mm x 19 mm supported on resilient material a
44、nd fixed to a bench Tool bit/cutter/abrasiveNew blade as recommended by the manufacturer for cutting chipboard Feed forceJust sufficient to cut at a brisk pace Test cycleCutting off approximately 10 mm wide strips (set by rip fence) across the 400 mm width of the chipboard Circular knives are tested
45、 at no load. 13.3.6Replacement of paragraph 1: Circular saws and circular knives are tested under the conditions specified in 13.2.2.4 and 13.2.2.5. Paragraph 3 is not applicable. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:52:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI - 7 -EN 50260
46、-2-5:2002 14Moisture resistance This clause of Part 1 is applicable. 15Insulation resistance and electric strength This clause of Part 1 is applicable. 16Void 17Abnormal operation This clause of Part 1 is applicable. 18Mechanical hazards This clause of Part 1 is applicable except as follows: 18.1Rep
47、lacement: Circular saws and circular knives shall be equipped with an adequate guarding system which cannot be removed without the aid of a tool. The guarding system for circular saws designed for cutting wood and the like shall comply with the requirements of 18.101, 18.102, 18.103 and 18.104. Comp
48、liance is checked by inspection. This requirement does not apply to tools with a peripheral speed of the blade of less than 5 m/s. For these tools, the relevant requirements are under consideration. Other means of achieving the necessary degree of mechanical safety are allowed provided these are equ
49、ally effective and reliable as those specified. Additional subclauses: 18.101 Guarding above the guide plate 18.101.1 In order to prevent inadvertent contact of the operators hand or fingers with the toothed rim of the saw blade, or with rotating parts on the handle side of the saw above the guide plate, these parts shall be screened by means of a guard or guards. 18.101.1.1 For saws of the types shown in Figures 101, 102 and 103, a fixed guard shall screen the toothed rim of the saw blade radially, at least down to the root of the saw teeth. Fo
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