1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationHand-held motor-operated electric tools Safety Part 2-12: Particular requirements for concrete vibratorsBS EN 60745-2-12:2009National forewordThis British Standard is the UK impl
2、ementation of EN 60745-2-12:2009. It was derived by CENELEC from IEC 60745-2-12:2003, incorporating amendment 1:2008. It supersedes BS EN 60745-2-12:2003+A1:2009, which will be withdrawn on 1 April 2012.The CENELEC common modifications have been implemented at the appropriate places in the text and
3、are indicated by tags (e.g. ).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 onrequest to its secretary.This publication does not purport to include all the neces
4、sary provisions of acontract. Users are responsible for its correct application. BSI 2010 ISBN 978 0 580 65765 8 ICS 25.140.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy
5、Committee on 28 February 2010Amendments/corrigenda issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60745-2-12:2009The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC
6、 amendment. For example, text altered by IEC amendment 1 is indicated by !“.EUROPEAN STANDARD EN 60745-2-12 NORME EUROPENNE EUROPISCHE NORM July 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnisc
7、he Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60745-2-12:2009 E ICS 25.140.20 Supersedes EN 60745-2-12:2003 + A1:2009English version Hand-held motor-operat
8、ed electric tools - Safety - Part 2-12: Particular requirements for concrete vibrators (IEC 60745-2-12:2003 + A1:2008, modified) Outils lectroportatifs moteur - Scurit - Partie 2-12: Rgles particulires pour les vibreurs bton (CEI 60745-2-12:2003 + A1:2008, modifis) Handgefhrte motorbetriebene Elektr
9、owerkzeuge - Sicherheit - Teil 2-12: Besondere Anforderungen fr Innenrttler (IEC 60745-2-12:2003 + A1:2008, modifiziert) This European Standard was approved by CENELEC on 2009-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givi
10、ng 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 official v
11、ersions (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 committees
12、 of Austria, Belgium, Bulgaria, 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 Ki
13、ngdom. Foreword The text of document 61F/511/FDIS, future edition 2 of IEC 60745-2-12, prepared by SC 61F (transformed into IEC TC 116, Safety of hand-held motor-operated electric tools) was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60745-2-12 on 2003-09-23. The te
14、xt of document 61F/737/FDIS, future amendment 1 to IEC 60745-2-12:2003, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 60745-2-12:2003 on 2009-04-01. A draft amendment (prAA), containing a number of common modifications prepared by the Technical Comm
15、ittee CENELEC TC 116, Safety of hand-held motor-operated electric tools, with the aim of having the standard listed in the OJEC as supporting the new MD 2006/42/EC, was submitted to the Unique Acceptance Procedure. The combined texts were approved by CENELEC as a new edition of EN 60745-2-12 on 2009
16、-07-01. This European Standard supersedes EN 60745-2-12:2003 + A1:2009. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-01-01 latest date by which the national standards
17、conflicting with the EN have to be withdrawn (dow) 2012-04-01 This standard is divided into two parts: 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 thi
18、s standard; 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 CENELEC by the Europe
19、an Commission and the European Free Trade Association and supports the essential requirements of EC 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 Directive
20、concerned. 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 of EN ISO 12100-1 and EN ISO 12100-2. This Part 2-12 is to be used in conjunction with EN 60745-1:2009. When this
21、 standard states “addition“, “modification“ or “replacement“, the relevant text of Part 1 is to be adapted accordingly. 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: in
22、 roman type; - test specifications: in italic type; - notes: in smaller roman type. _ BS EN 60745-2-12:2009EN 60745-2-12:2009 (E) 2 Endorsement notice The text of the International Standard IEC 60745-2-12:2003 +A1:2008 was approved by CENELEC as a European Standard with agreed common modifications.
23、BS EN 60745-2-12:2009EN 60745-2-12:2009 (E) 3This page deliberately set blankHAND-HELD MOTOR-OPERATED ELECTRIC TOOLSSAFETY Part 2-12: Particular requirements for concrete vibrators1ScopeThis clause of Part 1 is applicable except as follows:Addition:This standard applies to concrete vibrators.2 Norma
24、tive referencesThis clause of Part 1 is applicable.3 Terms and DefinitionsThis clause of Part 1 is applicable, except as follows:3.2.9 Replacement:normal loadload obtained when the tool is operated continuously, the hose and vibrator bottle beingattached to the tool as for normal use. During the ope
25、ration the vibrator bottle is immersedcentrally in a container filled with an amount of water corresponding to at least 50 timesthe volume of the vibrator bottle.The dimensions of the container are such that the diameter is about 50 % of the height of thewater inside the container.The height of the
26、container is such that no water can splash out during the testAddition:3.101concrete vibratortool intended for compacting concrete. The active part (vibrator bottle) of the vibrator performslow-amplitude vibrations and is immersed into the mass of concrete to be vibrated.Concrete vibrators may be of
27、 one of the following designs:!Text deleted“! “a) the motor and the vibrating mechanism are inside the vibrator bottle to which the part containing the mains switch or a power converter and switch handle assembly is connected by means of a long flexible hose containing the interconnecting cable. The
28、 long flexible hose may be used as the handle (see Figure 101); b) only the vibrator mechanism is inside the vibrator bottle to which a separate portable unit, comprising the motor, the handle and the mains switch, is connected by means of a long flexible hose containing a flexible shaft (see Figure
29、 102) !“BS EN 60745-2-12:2009EN 60745-2-12:2009 (E) 5 4 General requirementsThis clause of Part 1 is applicable.5 General conditions for the testsThis clause of Part 1 is applicable.6 Environmental requirements This clause of Part 1 is applicable except as follows: 6.1.2.4 Modification: Concrete vib
30、rators are held and used as specified in 6.1.2.5. 6.1.2.5 Modification: Concrete vibrators are tested at normal load as specified in 3.2.9. The container shall be placed on the ground and positioned such that the tool is located under the top microphone. 6.2 Vibration 6.2.6.3 Modification: Concrete
31、vibrators are tested under the operating conditions specified in 6.1.2.5. 7 ClassificationThis clause of Part 1 is applicable.8 Marking and instructionsThis clause of Part 1 is applicable.9 Protection against access to live partsThis clause of Part 1 is applicable.10 StartingThis clause of Part 1 is
32、 applicable, except as follows:10.1 Addition:The test is made at an ambient temperature of (10 1) C after the concrete vibrator hasbeen kept at this temperature for at least 2 h.BS EN 60745-2-12:2009EN 60745-2-12:2009 (E) 6 11 Input and currentThis clause of Part 1 is applicable.12 HeatingThis claus
33、e of Part 1 is applicable, except as follows:12.4 Replacement:The tool is operated at normal load for 30 min. The temperature rises are measured at theend of the 30 min.13 Leakage currentThis clause of Part 1 is applicable.14 Moisture resistanceThis clause of Part 1 is applicable, except as follows:
34、14.1 Replacement of the first paragraph: For design a) as defined in 3.101, the enclosure of all parts and the cable entry shall be IPX7. During the relevant test of this subclause, the part containing the switch or the power converter and switch handle assembly is placed in the normal position of u
35、se, the hose, if any, being attached correctly to it. For design b) as defined in 3.101, the motor unit shall be IPX4. During the relevant test of this subclause, the motor unit is placed in the most unfavourable position occurring during normal use. The isolating transformer or the motor-generator
36、shall be IPX4. !“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 follows:BS EN 60745-2-12:2009EN 60745-2-12:2009 (E) 7 17.2 Replacement
37、:The tool is operated under the conditions specified for normal load for two periods of 12 hat 1,1 times rated voltage and for two periods of 12 h at 0,9 times rated voltage. The restingtime between each of these periods of 12 h shall be at least 2 h.The tool may be switched on and off by means of a
38、 switch other than that incorporatedin the tool.During this test, replacement of the carbon brushes is allowed, and the tool is oiled andgreased as in normal use.If the temperature rise of any part of the tool exceeds the temperature rise determined duringthe test of 12.1, forced cooling or rest per
39、iods are applied, the rest periods being excludedfrom the specified operating time.During these tests, overload protection devices shall not operate.18 Abnormal operationThis clause of Part 1 is applicable, except as follows:18.12 This subclause is not applicable. Replace the last paragraph of 18.10
40、1 by the following: After the concrete vibrator has been allowed to cool down to approximately room temperature, it shall withstand an electric strength test as specified in 15.2. For concrete vibrators having the motor in the bottle, the test voltage across basic insulation is, however, reduced to
41、1 000 V for tools other than those of class III. !“18.101 The concrete vibrator is assembled as in normal use and is operated at rated voltageor the at the upper limit of the voltage range, starting from room temperature, the hose andthe vibrator bottle being held vertically in free air.The period o
42、f operation is:2 min for concrete vibrators provided with a mains switch such that the motor isswitched off automatically as soon the actuating member of the switch isreleased;15 min for other concrete vibrators, including those with an arrangement to lockthe mains switch in the ON position.The test
43、 is considered to be terminated when a protective device, if any, operates.After the concrete vibrator has been allowed to cool down to approximately room temperature,it shall withstand an electric strength test as specified in 15.3. For concrete vibrators havingthe motor in the bottle, the test vol
44、tage across basic insulation is, however, reduced to1 000 V for tools other than those of class III.19 Mechanical hazardsThis clause of Part 1 is applicable.BS EN 60745-2-12:2009EN 60745-2-12:2009 (E) 8 20 Mechanical strengthThis clause of Part 1 is applicable, except as follows:20.3 Addition:This t
45、est is done only with parts containing the motor or the mains switch which are held inthe hand or are operated by hand in normal use.20.101 The mechanical connections between the hose and the part containing the mainsswitch and those between the hose and the vibrator bottle shall be reliable.Complia
46、nce is checked by applying, on the concrete vibrator assembled as in normal use,between the vibrator bottle and the part containing the mains switch, for 1 min, a pull innewtons (N) equal to 200 times the mass of the vibrator bottle in kilograms, but not exceeding1 200 N.During the test, the electri
47、cal connections shall not be exposed to mechanical stress. After thetest, the hose shall not have moved noticeably at the places where it is fixed to the partcontaining the mains switch and to the vibrator bottle.Moreover, the concrete vibrator shall withstand an electric strength test as specified
48、in 15.2 .For concrete vibrators having the motor in the bottle, the test voltage across basic insulationis, however, reduced to 1 000 V for tools other than those of class III.20.5 This subclause is not applicable. ! “! “21 ConstructionThis clause of Part 1 is applicable, except as follows:21.16 Add
49、ition:The circuits supplying motors and other components inside parts which, in normal use, areeither immersed in the mixture to be vibrated or held in the hand or operated by hand, shallmeet the requirements for tools with water supply.Instead of an isolating transformer, a motor-generator providing the same degree of isolationfrom the electric mains as an isolating transformer may be used.The rated output voltage of an isolating transformer or a motor generator shall not exceed: 120 V at frequencies not exc
