1、 IEC 60335-2-94 Edition 3.0 2008-01 INTERNATIONAL STANDARD Household and similar electrical appliances Safety Part 2-94: Particular requirements for scissors type grass shears IEC 60335-2-94:2008(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved.
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9、ARD Household and similar electrical appliances Safety Part 2-94: Particular requirements for scissors type grass shears INTERNATIONAL ELECTROTECHNICAL COMMISSION X ICS 65.060.70 PRICE CODE ISBN 2-8318-9531-6 2 60335-2-94 IEC:2008(E) CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative reference
10、s .7 3 Definitions 8 4 General requirement.9 5 General conditions for the tests 9 6 Classification9 7 Marking and instructions.9 8 Protection against access to live parts10 9 Starting of motor-operated appliances 10 10 Power input and current .10 11 Heating 10 12 Void11 13 Leakage current and electr
11、ic strength at operating temperature11 14 Transient overvoltages .11 15 Moisture resistance 11 16 Leakage current and electric strength.11 17 Overload protection of transformers and associated circuits .11 18 Endurance11 19 Abnormal operation 12 20 Stability and mechanical hazards .12 21 Mechanical
12、strength .13 22 Construction.14 23 Internal wiring.15 24 Components .15 25 Supply connection and external flexible cords 16 26 Terminals for external conductors.16 27 Provision for earthing .16 28 Screws and connections.16 29 Clearances, creepage distances and solid insulation16 30 Resistance to hea
13、t and fire.17 31 Resistance to rusting17 32 Radiation, toxicity and similar hazards17 Annexes .24 Bibliography42 60335-2-94 IEC:2008(E) 3 Figure 101 Parts of cutting means (see 3.103, 3.104) Cutting width (see 3.101) 18 Figure 102 Examples of grass shears (see 3.102)18 Figure 103 Cutter blade extens
14、ion (see 20.103).19 Figure 104 Examples of compliance/non-compliance and measurement method for hand protection (see 20.104) 20 Figure 105 Example showing the layout for the strength test and a possible orientation for the grass shear (see 21.101.1).21 Figure 106 Cutting means strength test (see 21.
15、102) .22 Figure 107 Device for impact test (see 22.35)23 Figure BB.1 Examples of transducer location/orientation (handle)31 Figure CC.1 Microphone positions on the hemisphere (see Table CC.1) 33 Figure DD.1 Sketch of the measurement surface covered with an artificial surface (not to scale) 39 Table
16、CC.1 Coordinates of microphone-positions.34 Table CC.2 Absorption coefficients 35 4 60335-2-94 IEC:2008(E) INTERNATIONAL ELECTROTECNICAL COMMISSION _ HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-94: Particular requirements for scissors type grass shears FOREWORD 1) The International Ele
17、ctrotechnical Commission (IEC) is a worldwide organization for standardization comprising 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
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23、. Any divergence between any IEC Publication and the corresponding national or regional 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 Pu
24、blication. 6) All users should ensure that they have the latest edition of this publication. 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, p
25、roperty damage or other damage of any nature whatsoever, whether direct or indirect, 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
26、in this publication. Use of the referenced publications is indispensable for the correct 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
27、any or all such patent rights. International Standard IEC 60335-2-94 has been prepared by subcommittee 61F: Safety of hand-held motor-operated electric tools, of IEC technical committee 61: Safety of household and similar electrical appliances. The text of this standard is based on the following doc
28、uments: FDIS Report on voting 61F/704/FDIS 61F/712/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. This third edition cancels and replaces the second edition, published in 2002. Is constitutes a technical revisio
29、n. The main updates concern mechanical hazards, construction, endurance and resistance to rusting. 60335-2-94 IEC:2008(E) 5 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 ame
30、ndments. It was established on the basis of the fourth edition (2001) of that standard. NOTE 1 When “Part 1” is 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:
31、 Safety requirements for scissors type grass shears. When a particular subclause 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
32、. NOTE 2 The following numbering system is used: subclauses, tables and figures 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 subclaus
33、e; additional annexes are lettered AA, BB, etc. NOTE 3 The following print types are used: requirements: 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 a
34、ssociated noun are also in bold. 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“ in the data related to the specific publication. At this date, the publication will be
35、reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 6 60335-2-94 IEC:2008(E) INTRODUCTION It has been assumed in the drafting of this International Standard that the execution of its provisions is entrusted to appr
36、opriately 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 instructions. It also
37、covers abnormal situations that can be expected in practice. 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, national wiring rules may differ. If an ap
38、pliance within the scope of this standard also incorporates functions that are covered by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as far as is reasonable. If applicable, the influence of one function on the other is taken into account. This standard i
39、s a product family standard dealing with the safety of appliances and takes precedence over horizontal and generic standards covering the same subject. An appliance that complies with the text of this standard will not necessarily be considered to comply with the safety principles of the standard if
40、, when examined and tested, it is found to have other features that impair the level of safety covered by these requirements. An appliance employing materials or having forms of construction differing from those detailed in the requirements of this standard may be examined and tested according to th
41、e intent of the requirements and, if found to be substantially equivalent, may be considered to comply with the standard. 60335-2-94 IEC:2008(E) 7 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-94: Particular requirements for scissors type grass shears 1 Scope This clause of Part 1 is rep
42、laced by the following. This standard deals with the safety of electric powered hand-held scissors type grass shears with a maximum cutting width of 200 mm designed primarily for cutting grass, their rated voltage being not more than 250 V for a.c. or 50 V d.c. The term “grass shear” within this sta
43、ndard means “electric powered scissors type grass shear”. So far as is practicable, this standard deals with the common hazards presented by grass shears which are encountered by all persons in the normal use and reasonably foreseeable misuse. NOTE 101 Attention is drawn to the fact that in many cou
44、ntries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities. Requirements for chargers are covered by IEC 60335-2-29. EMC and environmental aspects e
45、xcept for noise have not been considered in this standard. 2 Normative references This clause of Part 1 is applicable except as follows. Addition: IEC 60320, Appliance couplers for household and similar general purposes ISO 354:2003, Acoustics Measurement of sound absorption in a reverberation room
46、ISO 3744:1994, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering method in an essentially free field over a reflecting plane ISO 3767-1:1998, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Symbols for operator control
47、s and other displays Part 1: Common symbols ISO 3767-3: 1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Symbols for operator controls and other displays Part 3: Symbols for powered lawn and garden equipment ISO 8662-1:1988, Hand-held portable power tools Mea
48、surement of vibrations at the handle - Part 1: General 8 60335-2-94 IEC:2008(E) ISO 11201:1995, Acoustics Noise emitted by machinery and equipment Measurement of emission sound pressure levels at a work station and at other specified positions Engineering method in an essentially free field over a r
49、eflecting plane ISO 11684: 1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Safety signs and hazard pictorials General principles ISO/TR 11688-1:1995, Acoustics Recommended practice for the design of low-noise machinery and equipment Part 1: Planning ISO 12100-1, Safety of machinery Basic concepts and general principles for design Part 1: Basic terminology, methodology ISO 13852:1996
