EN 50636-2-91-2014 en Household and similar electrical appliances - Safety - Part 2-91 Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers.pdf

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1、BSI Standards PublicationBS EN 50636-2-91:2014Household and similarelectrical appliances SafetyPart 2-91: Particular requirements for walk-behind and hand-held lawn trimmers andlawn edge trimmersBS EN 50636-2-91:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of

2、EN50636-2-91:2014. It supersedes BS EN 60335-2-91:2003 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee CPL/116, Safety of motor-operated electric tools.A list of organizations represented on this committee can beobtained on request to its secretary.This

3、publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 54821 5ICS 65.060.70Compliance with a British Standard cannot confer immun

4、ity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2014.Amendments issued since publicationDate Text affectedBS EN 50636-2-91:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50636-2-91 June 2014 ICS 65.0

5、60.70 Supersedes EN 60335-2-91:2003 English Version Household and similar electrical appliances - Safety - Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers Appareils lectrodomestiques et analogues - Scurit - Partie 2-91: Rgles particulires pour le

6、s coupe-gazon et les coupe-bordures portatifs et conducteur pied Sicherheit elektrischer Gerte fr den Hausgebrauch und hnliche Zwecke - Teil 2-91: Besondere Anforderungen fr handgefhrte Rasentrimmer und Rasenkantenschneider This European Standard was approved by CENELEC on 2013-09-02. CENELEC member

7、s 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 application

8、 to the CEN-CENELEC Management Centre 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 CEN-CENELEC M

9、anagement Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland,

10、 Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europische

11、s Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50636-2-91:2014 E BS EN 50636-2-91:2014EN 50636-2-91:2014 - 2 - Contents Pa

12、ge Foreword . 4 Introduction . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions 8 4 General requirement 9 5 General conditions for the tests . 9 6 Classification 9 7 Marking and instructions .10 8 Protection against access to live parts 13 9 Starting of motor-operated appliances 13 1

13、0 Power input and current 13 11 Heating .13 12 Void 13 13 Leakage current and electric strength at operating temperature 13 14 Transient overvoltages 13 15 Moisture resistance 14 16 Leakage current and electric strength .14 17 Overload protection of transformers and associated circuits .14 18 Endura

14、nce .14 19 Abnormal operation 14 20 Stability and mechanical hazards .14 21 Mechanical strength .17 22 Construction18 23 Internal wiring .20 24 Components 20 25 Supply connection and external flexible cords .20 26 Terminals for external conductors .21 27 Provision for earthing 21 28 Screws and conne

15、ctions 21 29 Clearances, creepage distances and solid insulation 21 30 Resistance to heat and fire 21 31 Resistance to rusting .21 32 Radiation, toxicity and similar hazards 22 Annexes .27 Annex B (normative) Appliances powered by rechargeable batteries 27 BS EN 50636-2-91:2014- 3 - EN 50636-2-91:20

16、14 Annex AA (normative) Safety signs and symbols which may be used on lawn trimmers and lawn edge trimmers 29 Annex BB (normative) Vibration .32 Annex CC (normative) Noise test code Engineering method (grade 2) .37 Annex DD (informative) Example of a material and construction fulfilling the requirem

17、ents for an artificial surface .43 Annex EE (informative) Safety instructions .45 Annex FF (normative) Test enclosure - Base.47 Annex ZZ (informative) Coverage of Essential Requirements of EU Directives 49 Bibliography 50 Figures Figure 101 Guard, lawn trimmer (see Clause 20.101.1) 23 Figure 103 Gua

18、rd strength test (hand-held trimmers) 25 Figure 104 Cutting head strength test (see Clause 21.102) 25 Figure 105 Cutting means measurement (see Clause 22.103) . 26 Figure AA.1 “Read operators manual” 29 Figure AA.2 “Keep bystanders away” 29 Figure AA.3 “Wear eye protection” . 30 Figure AA.4 “Do not

19、expose to rain” 30 Figure AA.5 “Disconnect the mains plug if the cord becomes damaged or entangled” 30 Figure AA.6 “Wear hearing protection” 31 Figure BB.1 Examples of transducer location/orientation (hand-held trimmers) 35 Figure BB.2 Examples of transducer location/orientation (walk-behind machine

20、s) . 36 Figure CC.1 Microphone positions on the hemisphere (see Table CC.1) . 38 Figure DD.1 Sketch of the measurement surface covered with an artificial surface (not to scale) . 44 Figure FF.1 Nail plan of base . 47 Figure FF.2 Base detail. 48 Tables Table CC.1 Co-ordinates of microphone positions

21、. 39 Table CC.2 Absorption coefficients 40 BS EN 50636-2-91:2014EN 50636-2-91:2014 - 4 - Foreword This document (EN 50636-2-91:2014) has been prepared by CLC/TC 116 “Safety of motor-operated electric tools“. The following dates are fixed: latest date by which this document has to be implemented at n

22、ational level by publication of an identical national standard or by endorsement (dop) 2014-12-20 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-09-02 This document supersedes EN 60335-2-91:2003. EN 60335-2-91:2013 includes the following si

23、gnificant technical changes: rewording of some clauses; alignment to EN 60335-1:2012; improvement of Clause 20.102. This document is to be used in conjunction with EN 60335-1:2012, “Household and similar electrical appliances Safety Part 1: General requirements”. When “Part 1” is mentioned in this s

24、tandard, it refers to EN 60335-1:2012. This document supplements or modifies the corresponding clauses in Part 1, so as to convert that publication into the European Standard “Safety requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers”. Where a particular subclause of Par

25、t 1 is not mentioned in document, that subclause applies as far as is relevant. Where this standard states “addition”, “modification” or “replacement”, the relevant text in Part 1 is to be adapted accordingly. Compliance with the relevant clauses of Part 1 together with this document provides one me

26、ans of conforming to the specified essential health and safety requirements of the Directive. This European Standard follows the overall requirements of EN ISO 12100. Warning: Other requirements arising from other EU Directives can be applicable to the products falling within the scope of this Europ

27、ean Standard. The following numbering system is used: subclauses that are numbered starting from 101 are additional to those in Part 1; additional annexes are lettered AA, BB, etc.; NOTE In this European Standard the following print types are used: - requirements proper: in roman type; - test specif

28、ications: in italic type; - explanatory matter: in smaller roman type. Words in bold in the text are defined in clause 3. When a definition concerns an adjective, the adjective and the associated noun are also in bold. BS EN 50636-2-91:2014- 5 - EN 50636-2-91:2014 Attention is drawn to the possibili

29、ty that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade A

30、ssociation, and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. BS EN 50636-2-91:2014EN 50636-2-91:2014 - 6 - Introduction This document is a type C standard as stated in EN ISO 12100.

31、 The machinery concerned and the extent to which hazards, hazardous situations and events are covered is as indicated in the scope of this document. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take

32、 precedence over the other standards, for machines which have been built and designed to the provisions of this type C standard. BS EN 50636-2-91:2014- 7 - EN 50636-2-91:2014 1 Scope This clause of Part 1 is replaced by the following. This European Standard specifies safety requirements and their ve

33、rification for the design and construction of electric powered walk-behind and hand-held lawn trimmers and lawn edge trimmers, with cutting element(s) of non-metallic filament line or freely pivoting non-metallic cutter(s), with a kinetic energy of not more than 10 J each, used by a standing operato

34、r for cutting grass, their rated voltage being not more than 250 V for a.c. or 75 V d.c NOTE 101 The method of calculating the kinetic energy for the purposes of this standard is given in 22.103. In this European Standard, hand-held and walk-behind lawn trimmers and lawn edge trimmers are referred t

35、o collectively as machine(s). This European Standard does not apply to scissor type or lawn trimmers and lawn edge trimmers with cutting means other than those described above; lawn trimmers and lawn edge trimmers with collecting devices; self-propelled lawn trimmers or lawn edge trimmers; EMC and e

36、nvironmental aspects, except noise, have not been considered in this European Standard. This European Standard does not apply to chargers as covered by EN 60335-2-29. This European Standard does not apply to batteries as covered by EN 62133. This European Standard deals with all the significant haza

37、rds presented by hand-held and walk-behind lawn trimmers and lawn edge trimmers when they are used as intended and under conditions of misuse which are reasonably foreseeable. 2 Normative references This clause of Part 1 is applicable except as follows. Addition: EN 28662-1:1992, Hand-held portable

38、power tools Measurement of vibrations at the handle Part 1: General (ISO 8662-1:1988) EN 60068-2-75, Environmental testing Part 2-75: Tests Test Eh: Hammer tests (IEC 60068-2-75) EN 60320 (all parts), Appliance couplers for household and similar general purposes (IEC 60320) EN 60335-1:2012, Househol

39、d and similar electrical appliances Safety Part 1: General requirements (IEC 60335-1:2010, modified) EN 62233:2008, Measurement methods for electromagnetic fields of household appliances and similar apparatus with regard to human exposure (IEC 62233:2005, modified) EN ISO 354:2003, Acoustics Measure

40、ment of sound absorption in a reverberation room (ISO 354:2003) BS EN 50636-2-91:2014EN 50636-2-91:2014 - 8 - EN ISO 3744:2010, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflect

41、ing plane (ISO 3744:2010) EN ISO 3767-1:2000, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Symbols for operator controls and other displays Part 1: Common symbols (ISO 3767-1:1998) EN ISO 3767-3, Tractors, machinery for agriculture and forestry, powered lawn an

42、d garden equipment Symbols for operator controls and other displays Part 3: Symbols for powered lawn and garden equipment (ISO 3767-3) EN ISO 4871:2009, Acoustics Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 11201:2010, Acoustics Noise emitt

43、ed by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections (ISO 11201:2010) EN ISO 11688-1:2009, Acoustics Recommended practice for the

44、 design of low-noise machinery and equipment Part 1: Planning (ISO/TR 11688-1:1995) EN ISO 12100:2010, Safety of machinery General principles for design Risk assessment and risk reduction (ISO 12100:2010) ISO 11684:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equip

45、ment Safety signs and hazard pictorials General principles 3 Terms and definitions This clause of Part 1 is applicable except as follows. 3.1.9 Replacement: 3.1.9 normal operation operation of the machine at rated voltage with the load necessary to attain rated power input 3.5.2 Replacement: 3.5.2 h

46、and-held trimmer machine which is supported by hand, possibly assisted by wheel(s), skids or harness etc. and constructed such that it cannot maintain its operating position without being held by an operator Addition: 3.101 walk-behind trimmer machine which is ground supported, controlled by an oper

47、ator walking behind and constructed such that it maintains its operating position without being held by an operator BS EN 50636-2-91:2014- 9 - EN 50636-2-91:2014 3.102 lawn trimmer grass trimming machine where the cutting means operates in a plane approximately parallel to the ground 3.103 lawn edge

48、 trimmer grass trimming machine where the cutting means operates in a plane approximately perpendicular to the ground 3.104 cutting means mechanism used to provide the cutting action in which one or more cutting elements, cutting by impact, rotate about an axis normal to the cutting plane 3.105 cutt

49、ing element single non-metallic filament line or freely pivoting non-metallic cutter 3.106 cutting head support system for the cutting element 3.107 cutting means control device activated by the operators hand or finger, for controlling the cutting means movement 3.108 power switch switch that controls the primary operating means of the machine 3.109 no-load operation of the machine at rated voltage with new cutting means, extendable non-metallic filament