1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationHand-held motor-operated electric tools SafetyPart 2-2: Particular requirements for screwdrivers and impact wrenchesBS EN 60745-2-2:2010BRITISH STANDARDBS EN 60745-2-2:2010Nation
2、al forewordThis British Standard is the UK implementation of EN 60745-2-2:2010. Itis derived from IEC 60745-2-2:2003, incorporating amendment 1:2008. It supersedes BS EN 60745-2-2:2003+A1:2009, which will be withdrawn on 1 February 2013.The CENELEC common modifications have been implemented at the a
3、ppropriate places in the text. The start and finish of each common modificationis indicated in the text by tags .The UK participation in its preparation was entrusted to Technical CommitteeCPL/116, Portable motor-operated tools.A list of organizations represented on this committee can be obtained on
4、request to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 20 0ISBN 978 0 580 67735 9ICS 25.140.20; 25.140.30Compliance with a British Standard cannot confer immunity fromlegal obligations.Th
5、is British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 June 2010.Amendments/corrigenda issued since publicationDate Text affectedThe start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating change
6、s to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by !“.1EUROPEAN STANDARD EN 60745-2-2 NORME EUROPENNE EUROPISCHE NORM March 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechni
7、que Europisches Komitee fr Elektrotechnische Normung Central Secretariat: 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 60745-2-2:2010 E ICS 25.140.20; 25.140.30 Supersedes EN 60745-2-2:2
8、003 + A1:2009 + A11:2007 + A12:2009English version Hand-held motor-operated electric tools - Safety - Part 2-2: Particular requirements for screwdrivers and impact wrenches (IEC 60745-2-2:2003, modified + A1:2008) Outils lectroportatifs moteur - Scurit - Partie 2-2: Rgles particulires pour les visse
9、uses et les cls chocs (CEI 60745-2-2:2003, modifie + A1:2008)Handgefhrte motorbetriebene Elektrowerkzeuge - Sicherheit - Teil 2-2: Besondere Anforderungen fr Schrauber und Schlagschrauber (IEC 60745-2-2:2003, modifiziert + A1:2008) This European Standard was approved by CENELEC on 2010-02-01. CENELE
10、C 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 obtained on app
11、lication 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 Central Secreta
12、riat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Mal
13、ta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 2 Foreword The text of the International Standard IEC 60745-2-2:2003, prepared by SC 61F (transformed into IEC TC 116, Safety of hand-held motor-operated electric tools), to
14、gether with the common modifications prepared by the Technical Committee CENELEC TC 61F (transformed into TC 116) was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 60745-2-2 on 2002-12-01. A number of amendments to EN 60745-2-2 have since been voted on and published
15、as amendments A11, A1 and A12. A further draft amendment (FprAD) including improvements to the vibration test code was submitted to the Unique Acceptance Procedure. The combined texts were approved by CENELEC as a new edition of EN 60745-2-2 on 2010-02-01. This European Standard supersedes EN 60745-
16、2-2:2003 + A11:2007 + A1:2009 + A12:2009. 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
17、which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-02-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-02-01 This standard is divided into two parts: Part 1: General
18、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 the requirements given
19、 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 CEN and CENELEC by the European Commission and the European Free Trade Association and supports the essential health and safety requirements
20、 of the Machinery Directive 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 Directives concerned. CEN/TC 255 is producing standards for non-electric screwdrivers and im
21、pact wrenches (EN 792-6). Warning: Other requirements and other EC Directives can be applicable to the products falling within the scope of this standard. The standard follows the overall requirements of EN ISO 12100-1 and EN ISO 12100-2. This Part 2-2 is to be used in conjunction with EN 60745-1:20
22、09. 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 starting from 101. Annexes, subclauses, tables and figures which are additional to those in
23、 IEC 60745-2-2 are prefixed “Z”. BS EN 60745-2-2:2010EN 60745-2-2:2010 (E)- 3 - NOTE In this standard, the following print types are used: - requirements: in roman type; - test specifications: in italic type; - notes: in smaller roman type. _ Endorsement notice The text of the International Standard
24、 IEC 60745-2-2:2003 + A1:2008 was approved by CENELEC as a European Standard with agreed common modifications.BS EN 60745-2-2:2010EN 60745-2-2:2010 (E) 4 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS SAFETY Part 2-2: Particular requirements for screwdriversand impact wrenches1 ScopeThis clause of Part 1 i
25、s applicable, except as follows:1.1 Addition:This standard applies to screwdrivers and impact wrenches.2 Normative referencesThis clause of Part 1 is applicable, except as follows:Additional definitions:3.101screwdrivertool intended for tightening and loosening screws, nuts, and the like and not equ
26、ipped with animpact mechanism but which may have a device for depth setting or setting the torque ormeans for switching off the rotation3.102 impact wrenchtool intended for tightening and loosening screws, nuts, and the like and equipped with arotary impact mechanism. Some impact wrenches are equipp
27、ed with a means for depthsetting and may have a means for setting the torque or switching off the rotation4 General requirementsThis clause of Part 1 is applicable.5 General conditions for the testsThis clause of Part 1 is applicable.Addition: This standard applies to screwdrivers and impact wrenche
28、s. !“3 Terms and definitions ! “This clause of Part 1 is applicable, except as follows : Additional normative reference: EN ISO 28927-2:200X 1), Hand-held portable power tools Test methods for evaluation of vibration emission Part 2: Wrenches, nut runners and screwdrivers (ISO 28927-2:200X 1) 6 Envi
29、ronmental requirements This clause of Part 1 is applicable except as follows: 1)At draft stage. BS EN 60745-2-2:2010EN 60745-2-2:2010 (E)6.1.2.4 Modification: Screwdrivers are suspended. The bit holder shall be horizontal. Impact wrenches are held and used as specified in 6.1.2.5. 6.1.2.5 Modificati
30、on: Screwdrivers are tested at no-load. Impact wrenches are tested under load. The load is applied by means of a brake system, so that the socket driving the brake rotates at a test speed of (45 5) min-1and the impact mechanism is caused to operate continuously. The brake as shown in Figure Z101 is
31、supported on a resilient material and mounted on a bench such that the geometric centre of the tool is 1 m above the reflecting plane. The details of the brake system are given in EN ISO 28927-2:200X, Annex C. To prevent chattering noise from items 2, 3 and 5 of the brake shown in EN ISO 28927-2:200
32、X, Figures C.1 and C.2, these parts may be insulated between each other by material such as rubber. The feed force shall be just sufficient to obtain a stable operation. The measurement time shall be approximately 10 s. 6.2 Vibration 6.2.4.2 Location of measurement Addition: Figures Z102 and Z103 sh
33、ow the positions for different screwdrivers and impact wrenches 6.2.6.3 Operating conditions Modification: Table Z101 Operating conditions for screwdrivers without impact mechanism Orientation Screwdrivers are tested at no-load. The screwdriver is hold horizontally during the test. Tool bit Tool bit
34、 of medium length and size. Grip force Hold the machine with normal gripping force, avoiding excessive gripping force. Test cycle One test cycle is given when the tool is switched on for no load at max. speed for more than 10 s and then switched off again. The measurement is conducted during 10 s wi
35、thin this period. NOTE As it is difficult to measure load applications of screwdrivers in laboratories and results have shown that the load has no influence on the vibration results, the measurements are conducted with no-load only. 5 BS EN 60745-2-2:2010EN 60745-2-2:2010 (E)Table Z102 Operating con
36、ditions for screwdrivers with impact mechanism and impact wrenches Orientation The tools are tested under load. Either a hexagon head bolt is screwed into a nut or a hexagon nut is screwed onto a bolt using a steel plate as part of a test fixture according to Figure Z104. The test fixture shall be e
37、ither mounted on the floor or on a concrete block at least the size of the test fixture with a minimum thickness of 200 mm. NOTE Figure Z104 shows an example for mounting the test fixture. The bolts or nuts are of the biggest capacities of the tool under test. The screw case is a hard joint with one
38、 steel washer under the head. The initial setting of the bolt or nut shall provide 10 mm of exposed length from the steel plate to provide the run up. The test fixture shall not turn or move during the test. The steel plate shall be long enough to accept 5 fixings with a clearance between each fixin
39、g of at least the dimension of the head of the bolt or nut or a dimension distance which does not cause interference with the adjacent fixing. Tool bit Hex head sockets of the size and depth needed for the bolts or nuts defined above. Feed force Provide sufficient grip and feed force to maintain saf
40、e control. Avoid excessive grip and feed force. Test cycle The test cycle will be one fixing for the specified bolt or nut for a period of run down and 5 s from first impact (one test series contains five cycles). The measurement starts from switch on of the tool with the socket / bit engaged with t
41、he bolts or nuts to the end of 5 s of impact with continuous operation. This includes the time to cover run up of 10 mm. 6.2.7.2 Declaration of the vibration total value Addition: The vibration total value ahof the handle with the highest emission and the uncertainty K shall be declared and: for scr
42、ewdrivers usable without impact the work mode description “screw driving without impact”; for screwdrivers with impact mechanism and impact wrenches the work mode description “impact tightening of fasteners of the maximum capacity of the tool”. 6 BS EN 60745-2-2:2010EN 60745-2-2:2010 (E) 7 8 Marking
43、 and instructions9 Protection against access to live partsThis clause of Part 1 is applicable.10 StartingThis clause of Part 1 is applicable.11 Input and currentThis clause of Part 1 is applicable.12 HeatingThis clause of Part 1 is applicable, except as follows:12.4 Replacement:The tool is operated
44、intermittently for 30 cycles or until temperatures stabilise, whichever isachieved first, each cycle comprising a period of continuous operation of 30 s and a restperiod of 90 s with the tool switched off, the tool loaded during the periods of operation bymeans of a brake adjusted so as to attain ra
45、ted input or rated current. The temperature risesare measured at the end of the “on” period. At the manufacturers option the tool may beoperated continuously until thermal stabilisation.The impact mechanism may be disabled during the test to prevent damage to the brake.13 Leakage currentThis clause
46、of Part 1 is applicable.14 Moisture resistanceThis clause of Part 1 is applicable.15 Electric strengthThis clause of Part 1 is applicable.16 Overload protection of transformers and associated circuitsThis clause of Part 1 is applicable.17 EnduranceThis clause of Part 1 is applicable, except as follo
47、ws:17.2 Replacement:For screwdrivers, the test of Part 1 is applicable.8.12.1.1 Addition Hold power tool by insulated gripping surfaces, when performing an operation where the fastener may contact hidden wiring or its own cord. Fasteners contacting a “live“ wire may make exposed metal parts of the p
48、ower tool “live“ and could give the operator an electric shock. This clause of Part 1 is applicable, except as follows: !“7 ClassificationThis clause of Part 1 is applicable.BS EN 60745-2-2:2010EN 60745-2-2:2010 (E) 8 For impact wrenches, replace the test of Part 1 as follows:Impact wrenches are ope
49、rated intermittently for 12 h at a supply voltage equal to 1,1 timesrated voltage and then for 12 h at a supply voltage equal to 0,9 times rated voltage.The tool may be switched on and off by means of a switch other than that incorporated in thetool.Each cycle of operation comprises an “on” period of 100 s at no load and a resting period of20 s with the tool switched “off”, the “off” periods being included in the specified operatingtime.During the tests above, the tool is placed in three dif
