1、 IEC 60335-2-91 Edition 3.0 2008-02 INTERNATIONAL STANDARD NORME INTERNATIONALE 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
2、particulires pour les coupe-gazon et les coupe-bordures portatifs et conducteur pied IEC 60335-2-91:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any f
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16、nner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60335-2-91 Edition 3.0 2008-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Household and similar electrical
17、 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 les coupe-gazon et les coupe-bordures portatifs et conducteur pied INTERNATIONAL ELECTROTECHNI
18、CAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE X ICS 65.060.70 PRICE CODE CODE PRIX ISBN 2-8318-9999-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60335-2-91 IEC:2008 CONTENTS FOREWORD.4 INTRODUCTION
19、.6 1 Scope.7 2 Normative references .7 3 Definitions 8 4 General requirement.9 5 General conditions for the tests 9 6 Classification9 7 Marking and instructions.10 8 Protection against access to live parts11 9 Starting of motor-operated appliances 11 10 Power input and current .11 11 Heating 11 12 V
20、oid11 13 Leakage current and electric strength at operating temperature11 14 Transient overvoltages .11 15 Moisture resistance 11 16 Leakage current and electric strength.12 17 Overload protection of transformers and associated circuits .12 18 Endurance12 19 Abnormal operation 12 20 Stability and me
21、chanical hazards .12 21 Mechanical strength .14 22 Construction.15 23 Internal wiring.17 24 Components .17 25 Supply connection and external flexible cords 17 26 Terminals for external conductors.18 27 Provision for earthing .18 28 Screws and connections.18 29 Clearances, creepage distances and soli
22、d insulation18 30 Resistance to heat and fire.18 31 Resistance to rusting18 32 Radiation, toxicity and similar hazards19 Annexes .24 Annex B (normative) Appliances powered by rechargeable batteries24 Annex D (normative) Thermal motor protectors26 Annex I (normative) Motors having basic insulation th
23、at is inadequate for the rated voltage of the appliance26 Annex AA (informative) Safety signs and symbols which may be used on lawn trimmers and lawn edge trimmers .27 Annex BB (informative) Vibration .29 60335-2-91 IEC:2008 3 Annex CC (informative) Noise test code Engineering method (grade 2) .34 A
24、nnex DD (informative) Example of a material and construction fulfilling the requirements for an artificial surface.40 Annex EE (informative) Safety instructions 42 Bibliography44 Figure 101 Guard, lawn trimmer (see 20.101.1) .20 Figure 102 Guard, lawn edge trimmer (see 20.101.2).21 Figure 103 Guard
25、strength test (hand-held appliances)22 Figure 104 Cutting head strength test (see 21.102)22 Figure 105 Cutting means measurement (see 22.103) .23 Figure BB.1 Examples of transducer location/orientation (hand-held trimmers) 32 Figure BB.2 Examples of transducer location/orientation (walk-behind machi
26、nes)33 Figure CC.1 Microphone positions on the hemisphere (see Table CC.1) 35 Figure DD.1 Sketch of the measurement surface covered with an artificial surface (not to scale) 41 Table CC.1 Co-ordinates of microphone positions36 Table CC.2 Absorption coefficients 37 4 60335-2-91 IEC:2008 INTERNATIONAL
27、 ELECTROTECHNICAL COMMISSION _ HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comp
28、rising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Stan
29、dards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this prep
30、aratory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organ
31、izations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form
32、of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretati
33、on by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regi
34、onal publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this pub
35、lication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect
36、, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the co
37、rrect application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60335-2-91 has been prepa
38、red by IEC subcommittee 61F: Safety of hand-held motor-operated electric tools, of IEC technical committee 61: Safety of household and similar electrical appliances. This third edition cancels and replaces the second edition published in 2002. It constitutes a technical revision. Main changes in thi
39、s edition include the revised endurance test in Clause 18; Annex B, which allows for battery-powered trimmers; and addition of informative Annexes BB, CC and EE on vibration, noise and safety instructions. This bilingual version, published in 2008-09, corresponds to the English version. 60335-2-91 I
40、EC:2008 5 The text of this standard is based on the following documents: FDIS Report on voting 61F/710/FDIS 61F/713/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. The French version of this standard has not been
41、 voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of the fourth edition (2001) of that standard. NOTE 1 When “Part 1” is
42、 mentioned in this standard, it refers to IEC 60335-1. This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to convert that publication into the IEC standard: Safety requirements for walk-behind and hand- held lawn trimmers and lawn edge trimmers. When a particular sub
43、clause of Part 1 is not mentioned in this part 2, that subclause applies as far as is reasonable. When this standard states “addition”, “modification” or “replacement”, the relevant text in Part 1 is to be adapted accordingly. NOTE 2 The following numbering system is used: subclauses, tables and fig
44、ures that are numbered starting from 101 are additional to those in Part 1; unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including those in a replaced clause or subclause; additional annexes are lettered AA, BB, etc. NOTE 3 The following print
45、types are used: requirements proper: in roman type; test specifications: in italic type; notes: in small 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. A list of all parts of the IEC 6033
46、5 series, under the general title: Household and similar electrical appliances Safety, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“
47、in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 60335-2-91 IEC:2008 INTRODUCTION It has been assumed in the drafting of this international standard that the execution of its provisions is entr
48、usted to appropriately qualified and experienced persons. This standard recognizes the internationally accepted level of protection against hazards such as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal use taking into account the manufacturers instructi
49、ons. It also covers abnormal situations that can be expected in practice and takes into account the way in which electromagnetic phenomena can affect the safe operation of appliances. This standard takes into account the requirements of IEC 60364 as far as possible so that there is compatibility with the wiring rules when the appliance is connected to the supply mains. However
