1、BSI Standards PublicationHousehold and similar electrical appliances SafetyPart 2-94: Particular requirements for scissors type grass shearsBS EN 50636-2-94:2014National forewordThis British Standard is the UK implementation of EN 50636-2-94:2014. Itsupersedes BS 2769-2.14:1992, which will be withdr
2、awn on 30 September2016.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 be obtained onrequest to its secretary.This publication does not purport to include all the n
3、ecessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 61731 7ICS 25.140.20; 65.060.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This Britis
4、h Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 50636-2-94:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50636-2-94 June 2014 ICS 65.060.70 Engl
5、ish Version Household and similar electrical appliances - Safety - Part 2-94: Particular requirements for scissors type grass shears Appareils lectrodomestiques et analogues - Scurit - Partie 2-94: Rgles particulires pour les coupe-gazon de type ciseaux Sicherheit elektrischer Gerte fr den Hausgebra
6、uch und hnliche Zwecke - Teil 2-94: Besondere Anforderungen fr Grasscheren mit Scherblttern This European Standard was approved by CENELEC on 2013-09-30. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the
7、 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 CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, F
8、rench, 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 Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austr
9、ia, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain
10、, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of e
11、xploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50636-2-94:2014 E BS EN 50636-2-94:2014EN 50636-2-94:2014 2 Contents Foreword.4 Introduction .6 1 Scope 7 2 Normative references 7 3 Terms and definitions 8 4 General requirement .9 5 General conditions for
12、the tests 9 6 Classification .9 7 Marking and instructions 10 8 Protection against access to live parts . 12 9 Starting of motor-operated appliances . 13 10 Power input and current . 13 11 Heating . 13 12 Void 13 13 Leakage current and electric strength at operating temperature . 13 14 Transient ove
13、rvoltages . 13 15 Moisture resistance 13 16 Leakage current and electric strength 13 17 Overload protection of transformers and associated circuits . 13 18 Endurance 14 19 Abnormal operation 14 20 Stability and mechanical hazards . 14 21 Mechanical strength . 16 22 Construction . 17 23 Internal wiri
14、ng . 19 24 Components . 19 25 Supply connection and external flexible cords . 19 26 Terminals for external conductors 20 27 Provision for earthing . 20 28 Screws and connections 20 29 Clearances, creepage distances and solid insulation 20 30 Resistance to heat and fire . 21 31 Resistance to rusting
15、21 32 Radiation, toxicity and similar hazards . 21 Annexes . 28 Annex B (normative) Appliances powered by rechargeable batteries . 28 Annex AA (normative) Safety signs and symbols which may be used on scissors type grass shears . 30 Annex BB (normative) Vibration . 32 Annex CC (normative) Noise test
16、 code engineering method (grade 2) . 36 BS EN 50636-2-94:2014 3 EN 50636-2-94:2014 Annex DD (informative) Example of a material and construction fulfilling the requirements for an artificial surface (see CC.4.1) 42 Annex EE (informative) Safety instructions 44 Annex FF (normative) Test enclosure Bas
17、e 46 Annex ZZ (informative) Coverage of Essential Requirements of EU Directives . 49 Bibliography . 50 Figures Figure 101 Parts of cutting means (see 3.103, 3.104) Cutting width (see 3.101) 22 Figure 102 Examples of grass shears (see 3.102) 22 Figure 103 Cutter blade extension (see 20.101) 23 Figure
18、 104 Examples of compliance/non-compliance and measurement method for hand protection (see 20.102). 24 Figure 105 Example showing the layout for the strength test and a possible orientation for the machine (see 21.102) . 25 Figure 106 Cutting means strength test (see 21.103) 26 Figure 107 Device for
19、 impact test (see 22.35) . 27 Figure AA.1 “Read operators manual” . 30 Figure AA.2 “Do not expose to rain” . 30 Figure AA.3 “Warning: cutting means continues to run after the motor is switched off” 31 Figure AA.4 Mains operated machines “Disconnect the mains plug if the cord becomes damaged or entan
20、gled” 31 Figure AA.5 “Keep bystanders away” . 31 Figure BB.1 Examples of transducer location/orientation (handle) 35 Figure CC.1 Microphone positions on the hemisphere (see Table CC.1) . 37 Figure DD.1 Sketch of the measurement surface covered with an artificial surface (not to scale) 43 Figure FF.1
21、 Nail plan of base . 47 Figure FF.2 Base detail 48 Tables Table CC.1 Coordinates of microphone-positions . 38 Table CC.2 Absorption coefficients 39 BS EN 50636-2-94:2014EN 50636-2-94:2014 4 Foreword This document (EN 50636-2-94:2014) has been prepared by CLC/TC 116 “Safety of motor-operated electric
22、 tools“. The following dates are fixed: latest date by which this document has to be implemented at national 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)
23、 2016-09-30 EN 50636-2-94:2014 includes the following significant technical changes: alignment to the European Machinery Directive 2006/42/EC; alignment to EN 60335-1:2012. This document is to be used in conjunction with EN 60335-1:2012 “Household and similar electrical appliances - Safety Part 1: G
24、eneral requirements”. When “Part 1” is mentioned in this standard, 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 scissors type grass shears”. Where a parti
25、cular subclause of Part 1 is not mentioned in this 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 th
26、is Part 2 provides one means of conforming to the specified essential health and safety requirements of the Directive. This European Standard follows the overall requirements of EN ISO 12100. Other harmonised standards referred to in this European Standard are listed in Annex ZC of Part 1 and this d
27、ocument. The annex lists the valid edition of those documents at the time of issue of this EN. All references are however to be understood as references to the latest edition. The following numbering system is used: subclauses that are numbered starting from 101 are additional to those in Part 1; ad
28、ditional annexes are lettered AA, BB, etc.; NOTE In this European Standard the following print types are used: - requirements proper: in roman type; - test specifications: in italic type; - explanatory matter: in smaller roman type. Words in bold in the text are defined in Clause 3. When a definitio
29、n concerns an adjective, the adjective and the associated noun are also in bold. BS EN 50636-2-94:2014 5 EN 50636-2-94:2014 Attention is drawn to the possibility 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 ident
30、ifying 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 Association, and supports essential requirements of EU Directive. For the relationship with EU Directive 2006/42/EC, see informative Annex ZZ,
31、 which is an integral part of this document. Warning: Other requirements arising from other EU Directives can be applicable to the products falling within the scope of this European Standard. BS EN 50636-2-94:2014EN 50636-2-94:2014 6 Introduction This document is a type C standard as stated in EN IS
32、O 12100:2010. 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
33、standard take precedence over the other standards, for machines which have been built and designed to the provisions of this type C standard. BS EN 50636-2-94:2014 7 EN 50636-2-94:2014 1 Scope This clause of Part 1 is replaced by the following. This European Standard specifies safety requirements an
34、d their verification for the design and construction 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 75 V d.c. In this European Standard the term “machine”
35、means “electric powered scissors type grass shear”. This European Standard does not apply to hedge trimmers as covered by EN 60745215. Requirements for chargers are covered by EN 60335-2-29:2004. Requirements for batteries are covered by EN 62133:2003. EMC and environmental aspects except for noise
36、have not been considered in this European Standard. This European Standard deals with all the significant hazards presented by hand-held scissors type grass shears when they are used as intended and under conditions of misuse which are reasonably foreseeable. 2 Normative references This clause of Pa
37、rt 1 is applicable except as follows. Addition: EN 12449:1999 1), Copper and copper alloys Seamless, round tubes for general purposes EN 28662-1:1992, Hand-held portable power tools Measurement of vibrations at the handle - Part 1: General (ISO 8662-1:1988) EN 60320 (all parts), Appliance couplers f
38、or household and similar general purposes (IEC 60320 (all parts) EN 60335-1:2012, Household and similar electrical appliances Safety Part 1: General requirements (IEC 60335-1:2010, mod.) EN 62233:2008, Measurement methods for electromagnetic fields of household appliances and similar apparatus with
39、regard to human exposure (IEC 62233:2005, mod.) EN ISO 354:2003, Acoustics Measurement of sound absorption in a reverberation room (ISO 354:2003) EN ISO 3744:2010, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering method for an es
40、sentially free field over a reflecting plane (ISO 3744:2010) EN ISO 4871:2009, Acoustics Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) 1)Superseded by EN 12449:2012. BS EN 50636-2-94:2014EN 50636-2-94:2014 8 EN ISO 11201:2010, Acoustics - Noise emit
41、ted 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
42、the 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 3767-1:1998, Tractors, machinery for agriculture and forestry, powered lawn and garden e
43、quipment Symbols for operator controls 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 7000, Graph
44、ical symbols for use on equipment Registered symbols EN ISO 7010, Graphical symbols - Safety colours and safety signs - Registered safety signs (ISO 7010) ISO 11684:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Safety signs and hazard pictorials General pr
45、inciples 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 under the following conditions: the machine is operated at rated voltage with the load necessary to attain rated power input 3.5.2 Replacement: 3
46、.5.2 hand-held machine portable machine intended to be held in the hand during normal use, including machines which will not maintain their operating position unless supported, possibly with an extension shaft and/or assisted by wheel(s), skid(s) or similar Addition: 3.101 width of cut the effective
47、 cutting width of the cutting device measured from the inside edge of the first blade tooth or shear plate tooth to the inside edge of the last blade tooth or shear plate tooth, whichever is the greater (see Figure 101) 3.102 scissors type grass shears grass-cutting machine with two blades where the
48、 one cutter blade reciprocates along a straight or curved path (see Figure 102) 3.103 blade tooth part of the cutter blade which is sharpened to perform the shearing action (see Figure 101) BS EN 50636-2-94:2014 9 EN 50636-2-94:2014 3.104 cutter blade part of the cutting means having blade teeth whi
49、ch cut by shearing action against the teeth of the shear plate (see Figure 101) 3.105 cutting means cutter blade and shear plate together with any supporting part(s), which together perform the cutting action 3.106 cutting means control device, activated by the operators hand or finger, for controlling the operation of the cutting means 3.107 no load operation of the machine at rated voltage with the cutting means attached 3.108 ex
