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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 50144-2-6 : 1997 Th
2、e European Standard EN 50144-2-6 : 1996 has the status of a British Standard ICS 25.120.10; 25.140.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Safety of hand-held electric motor operated tools Part 2. Particular requirements Section 2.6 Specification for hammers License
3、d Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:41:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50144-2-6 : 1997 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into eff
4、ect on 15 April 1997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference CPL/61/6 Draft for comment 92/05036 DC ISBN 0 580 26434 3 Amendments issued since publication Amd. No.DateText affected Committees responsible for this British Standard The preparation
5、 of this British Standard was entrusted by Technical Committee CPL/61, Safety of electrical appliances, to Subcommittee CPL/61/6, Portable motor-operated tools, upon which the following bodies were represented: Agricultural Engineers Association Association of Control Manufacturers (TACMA (BEAMA Ltd
6、.) Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) Association of Manufacturers of Domestic Electrical Appliances Consumer Policy Committee of BSI Consumers Association Department of Trade and Industry (Consumer Safety Unit, CA Division) Electricity Associa
7、tion Health and Safety Executive Hire Association Europe Institution of Incorporated Executive Engineers Portable Electric Tool Manufacturers Association Rotating Electrical Machines Association (BEAMA Ltd.) Co-opted members Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:41:33 GMT+00:00 2
8、006, Uncontrolled Copy, (c) BSI BS EN 50144-2-6 : 1997 BSI 1997i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 50144-2-63 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:41:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BSI 1997 BS EN 501
9、44-2-6 : 1997 National foreword This British Standard has been prepared by Subcommittee CPL/61/6 and is the English language version of EN 50144-2-6 Safety of hand-held electric motor operated tools Part 2-6 : 1996 Particular requirements for hammers, published by the European Committee for Electrot
10、echnical Standardization (CENELEC). It is to be read in conjunction with BS EN 50144-1 : 1996 General requirements which it supplements or modifies. The many references to Part 1 should be read as references to BS EN 50144-1 : 1996 which is the English language version of EN 50144-1 : 1995. The fore
11、word of EN 50144-2-6 makes reference to the Date of withdrawal, dow, of the relevant national standard. In this case the relevant national standard is BS 2769 : Section 2.6 : 1995 which will be withdrawn on 1 December 1996 in accordance with the CENELEC Internal Regulations. Reference is also made t
12、o the application of CENELEC Memorandum No 6 with regard to certification. Attention is drawn to Note 7 to Memorandum No 6 which states: The use of the certificate or mark licence in the running production may not go on for more than 60 months after dow. This should allow necessary changes in the pr
13、oduction line and to use up supplies. Within the established period after dow the certificates and mark licences will have to be reconsidered and cancelled or reissued. For tools intended to be used in locations where special conditions prevail, as in ships and vehicles, and in hazardous locations,
14、for example, where explosions are liable to occur, requirements additional to those specified in the standard may be necessary. WARNING. This standard calls for test procedures that may be injurious to safety or health if adequate precautions are not taken when conducting tests. Product certificatio
15、n. Attention is drawn to the fact that products conforming with this British Standard may be approved by BSI Product Certification, and that such certification may be used for the purposes of participation in the CENELEC Certification Agreement. (Details of the BSI certification mark are given on th
16、e inside back cover). Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 12, an inside back cover and a back cover. Licensed Copy: s
17、heffieldun sheffieldun, na, Mon Nov 06 06:41:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CENELEC European Committee for Electrotechnical Standardization Comite Europe en de Normalisation Electrotechnique Europa isches Komitee fu r Elektrotechnische Normung Central Secretariat: rue de Stassart 35,
18、B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 50144-2-6 : 1996 E EUROPEAN STANDARDEN 50144-2-6 NORME EUROPE ENNE EUROPA ISCHE NORM February 1996 ICS 25.140.20;25.120.10Supersedes HD 400.2F S1 : 1980 Descriptors: Hand-held electric motor operated tools, hammers, safety requir
19、ements, protection against electric shocks, fire protection, protection against mechanical hazards English version Safety of hand-held electric motor operated tools Part2-6: Particular requirements for hammers Se curite des outils e lectroprotatifs a moteur Partie 2-6: Re gles particulie res pour le
20、s marteaux Sicherheit von handgefu hrten motorbetriebenen Elecktrowerkzeugen Teil 2-6: Besondere Anforderungen fu r Ha mmer This European Standard was approved by CENELEC on 1994-10-04. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for g
21、iving 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 officia
22、l 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 committ
23、ees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:41:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN
24、50144-2-6 : 1996 BSI 1997 Foreword This European Standard has been prepared by the Technical Committee 61F, Hand-held and transportable electric motor operated tools. The text of the draft was submitted to the Unique Acceptance Procedure (UAP) in December 1993 and was approved by CENELEC as EN 50144
25、-2-6 on 1994-10-04. A draft for an amendment was submitted to the Unique Acceptance Procedure in April 1994 and was approved by CENELEC on 1994-10-04 for inclusion into the European Standard. This European Standard replaces HD 400.2F S1 : 1980 + A1 : 1994. The following dates were fixed: latest date
26、 by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1996-12-01 As far as certification is concerned, CENELEC Memorandu
27、m 6 applies. This standard is divided into two Parts: Part 1: General Requirements, comprising clauses of a general character. Part 2: Particular Requirements, dealing with particular types of appliances. The clauses of these particular requirements supplement or modify the corresponding clauses in
28、Part 1. Where the text of Part 2 indicates an addition to, a modification or replacement of the relevant requirement, test specification or explanation of Part 1, these changes are made to the relevant text of Part 1, which then becomes part of the standard. Where no change is necessary, the words T
29、his clause of Part 1 is applicable are used in Part 2. Subclauses, tables and 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: in roman type; Test specification: in italic type; Explanatory
30、 matter: in smaller roman type. Contents Page Foreword2 1Scope3 2Definitions3 3General requirements3 4General conditions for the tests3 5Rating3 6Classification3 7Marking3 8Protection against electric shock3 9Starting3 10Input and current3 11Heating3 12Leakage current3 13Environmental requirements3
31、14Moisture resistance5 15Insulation resistance and electric strength5 16Endurance5 17Abnormal operation5 18Mechanical hazards5 19Mechanical strength8 20Construction8 21Components8 22Internal wiring8 23Supply connection and external flexible cables and cords8 24Terminals for external conductors8 25Pr
32、ovision for earthing8 26Screws and connections8 27Creepage distances, clearances and distances through insulation8 28Resistance to heat, fire and tracking8 29Resistance to rusting8 30Radiation8 Figures 101 Apparatus for testing impact drills and hammers9 102 Application of load11 103 Loading device1
33、2 Annexes12 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:41:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 50144-2-6 : 1996 BSI 1997 1 Scope This clause of Part 1 is applicable except as follows: 1.1 Addition: This standard applies to hammers including rotary hammers. 2 Definit
34、ions This clause of Part 1 is applicable except as follows: 2.2 Replacement: 18 normal load: The load obtained when the hammer, mounted in an apparatus as shown in figure 101, is operated intermittently, each cycle comprising a period of operation of 30 s and a rest period of 90 s with the hammer sw
35、itched off, an axial force just sufficient to ensure steady operation of the hammer mechanism being applied to the hammer through a resilient medium. 3 General requirements This clause of Part 1 is applicable. 4 General conditions for the tests This clause of Part 1 is applicable. 5 Rating This clau
36、se of Part 1 is applicable. 6 Classification This clause of Part 1 is applicable. 7 Marking This clause of Part 1 is applicable except as follows: 7.13.1 Addition: If the hammer is fitted with a device which allows the connection of external dust collection equipment, information shall be given in t
37、he instruction sheet as to how to connect such a device. 8 Protection against electric shock This clause of Part 1 is applicable. 9 Starting This clause of Part 1 is applicable. 10 Input and current This clause of Part 1 is applicable. 11 Heating This clause of Part 1 is applicable except as follows
38、: 11.2 Addition: If it is not possible to attain rated input when operating the hammer as specified for normal load, the hammer is loaded by means of a brake adjusted so as to attain rated input, the hammer mechanism being not engaged or removed. 11.6 Addition: The temperature rise limit specified f
39、or the external enclosure does not apply to the hammer mechanism. 12 Leakage current This clause of Part 1 is applicable. 13 Environmental requirements This clause of Part 1 is applicable except as follows: 13.1 Addition: If rotary hammers are fitted with integral collection devices or devices which
40、 allow the connection of external collection equipment, the tests under working conditions shall be in accordance with the following: MaterialConcrete block 800 mm 3 500 mm 3 200 mm Feed-speedJust sufficient force to ensure steady working Depth of cut80% of usable drill bit length or 180 mm, whichev
41、er is the shorter Width of cut-offNot applicable Tool bit/cutter/ abrasive Type as specified by the manufacturer which is as close as possible to table 101. A new or sharpened drill to be used at the start of the test period Integral collection (lf any) Emptied as required during a pause in the test
42、 cycle OrientationDrilling in a horizontal direction across the cabin with the airflow from left to right of the tool. Holes drilled to be within 90 cm to 150 cm of the floor Test cycle1 hole every 4 min Test period60 min total Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:41:33 GMT+00:0
43、0 2006, Uncontrolled Copy, (c) BSI Page 4 EN 50144-2-6 : 1996 BSI 1997 Table 101. Drill bit size Tool mass, kgUp to 3.5Over 3.5 up to 5 Over 5 up to 7 Over 7 up to 10 Over 10 up to 18 Over 18 Drill diameter, mm101620253240 Usable drill length, mm100100200200250250 Table 104. Drill bit size for rotar
44、y hammer test Mass of hammer, kgUp to 3.5Over 3.5 up to 5 Over 5 up to 7 Over 7 up to 10 Over 10 up to 18 Over 18 Nominal diameter of drill bit, mm 101620253240 Usable length of drill bit, mm 100100200200250250 13.2 Addition: Test requirements for hammers without rotary action are not covered by thi
45、s standard. NOTE. In EU countries test requirements are given in Directive 84/537/EEC. 13.2.2 Replacement of paragraph 2: For hammers with rotary action the speed setting shall be that recommended by the manufacturer for the drill bit size defined for the test for drilling into concrete. 13.2.3 Repl
46、acement of paragraphs 1, 2 and 3: Rotary hammers are tested under load as shown in figure 102 and in accordance with the conditions shown in tables 102, 103 and 104. Table 102. Test conditions for rotary hammers OrientationDrilling vertically downwards into a concrete block having the formulation sp
47、ecified in table 103, the dimensions 500 mm 3 500 mm 3 200 mm and supported on resilient material Tool bitDrill bit as recommended by the manufacturer for drilling in concrete and of the size defined in table 104 Feed force1,5 times the mass of the tool but not less than 80 N Test cycleMeasurement s
48、tarts when the drill has reached a depth equal to its diameter and stops when the depth has reached 80% of its usable length or 180 mm, whichever is the shorter Table 103. Concrete formulation (per cubic metre) CementWaterAggregate 1844 kg Particle sizeFraction (%) 330 kg99 kg0 to 2 mm383 0 to 8 mm5
49、05 0 to 16 mm805 0 to 32 mm100 Compressive strength after 28 days to be 40 N/mm2. 13.3.4 Replacement of paragraph 2: For hammers without rotary action all speed setting devices shall be adjusted to the highest value. For hammers with rotary action the speed setting shall be that recommended by the manufacturer for the drill bit size defined for the test for drilling into concrete. 13.3.7 Replacement of paragraph 1: Hammers with rotary action are tested under load as shown in figure 102 and in accordance with the conditions shown in tabl
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