Bsi bs en 50636 2 94 2014

3.104 cutter blade part of the cutting means having blade teeth which cut by shearing action against the teeth of the shear plate see Figure 101 cutting means control device, activate

BSI Standards Publication

Household and similar electrical appliances — Safety

Part 2-94: Particular requirements for scissors type grass shears

This British Standard is the UK implementation of EN 50636-2-94:2014 Itsupersedes BS 2769-2.14:1992, which will be withdrawn on 30 September2016.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 necessary provisions of

a contract Users are responsible for its correct application

© The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 61731 7

Amendments/corrigenda issued since publication

Date Text affected

NORME EUROPÉENNE

English Version

Household and similar electrical appliances - Safety - Part 2-94:

Particular requirements for scissors type grass shears

Appareils électrodomestiques et analogues - Sécurité -

Partie 2-94: Règles particulières pour les coupe-gazon de

type ciseaux

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-94: Besondere Anforderungen für

Grasscheren mit Scherblättern

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 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, 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 Management 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, 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 Comité Européen de Normalisation Electrotechnique Europäisches Komitee für 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 50636-2-94:2014 E

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 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 overvoltages 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 wiring 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 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 code engineering method (grade 2) 36

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 – Base 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 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 impact test (see 22.35) 27

Figure AA.1 – “Read operator’s 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 entangled” 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 – 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

Foreword

This document (EN 50636-2-94:2014) 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 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) 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: General 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 particular 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 this 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 document 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;

– additional 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 definition concerns an adjective, the adjective and the associated

noun are also in bold

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 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 Association, and supports essential requirements of EU Directive For the relationship with EU Directive 2006/42/EC, see informative Annex ZZ, 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

Introduction

This document is a type C standard as stated in EN ISO 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 standard take precedence over the other standards, for machines which have been built and designed to the provisions of this type C standard

1 Scope

This clause of Part 1 is replaced by the following

This European Standard specifies safety requirements and 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” means “electric powered scissors type grass shear” This European Standard does not apply to hedge trimmers as covered by EN 60745–2–15

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 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

This clause of Part 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 for 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 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 essentially 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

EN ISO 11201:2010, Acoustics - Noise emitted 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 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

equipment – 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, Graphical 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 principles

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

the effective 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 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)

3.104

cutter blade

part of the cutting means having blade teeth which cut by shearing action against the teeth of the

shear plate (see Figure 101)

cutting means control

device, activated by the operator’s 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

extension shaft

optional shaft which is designed to be fitted to a hand-held machine to enable the operator to cut

grass while in a standing position

3.109

power switch

switch that controls the primary operating means of the machine

This clause of Part 1 is applicable

This clause of Part 1 is applicable except as follows

− class II or class III

Battery powered machines incorporating battery chargers shall be class II Other battery-powered machines shall be class III

Compliance is checked by inspection and by the relevant tests

6.2 Addition:

Class II machines shall be at least IPX4 Class III machines shall be at least IPX1

This clause of Part 1 is applicable except as follows

7.1 Addition:

Add the following indents:

− business name and full address of the manufacturer and, where applicable his authorized representative;

− year of construction;

− designation of the machine,

designation of machine may be achieved by a combination of letters and/or numbers providing that this code is explained by giving the explicit designation such as “scissors type grass shear” etc in the instructions supplied with the machine;

NOTE 1 An example of such code is “A123B”.

− designation of series or type,

allowing the technical identification of the product This may be achieved by a combination of letters and/or numbers and may be combined with the designation of machine;

NOTE 2 The term “designation of series or type” is also known as model number.

Add the following new paragraphs:

The following warnings shall be located in easily visible positions, indicating:

− Warning: Read instruction manual

− Warning: Do not expose to rain

− Warning: Cutting means continues to run after the motor is switched off

− Warning: Keep bystanders away

Mains-operated machines shall also be marked with the substance of the following:

− Disconnect the mains plug if the cord becomes damaged or entangled

Marking giving cautionary information shall be located as close as practicable to the relevant hazard Such marking shall either be in one of the official languages of the country in which the machine is to

be sold or the safety signs and symbols according to Annex AA shall be used Symbols according to ISO 3767-1, ISO 3767-3 and/or ISO 11684 may also be used, as appropriate Colours shall be in accordance with ISO 3767-1 and ISO 3767-3 and/or ISO 11684 as appropriate unless the symbols are

cast, embossed or stamped when colours are not required If symbols and/or safety signs are used, their significance shall be described in the instruction manual

7.9 Not applicable

7.12 Replacement:

An instruction manual shall be supplied with the machine, giving operating, servicing, maintenance and safety instructions that comply as appropriate with EN ISO 12100:2010, 6.4 The words ‘Original instructions’ shall appear on the language version(s) verified by the manufacturer or his authorised representative Where no ‘Original instructions’ exist in the official language(s) of the country where the machine is to be used, a translation into that/those language(s) shall be provided by the manufacturer or his authorised representative or by the person bringing the machine into the language area in question The translations shall bear the words ‘Translation of the original instructions’, and they shall be accompanied by a copy of the ‘Original instructions’

This instruction manual shall include

a) a repeat of those warnings required to be marked on the machine together with further explanation, where appropriate Where safety signs are used in the marking on the machine, their function shall be explained,

b) a warning to never allow children, persons with reduced physical, sensory or mental capabilities

or lack of experience and knowledge or people unfamiliar with these instructions to use the machine, local regulations may restrict the age of the operator,

c) a warning to never operate the machine while people, especially children, or pets are nearby,

d) a general description of the machine, the intended use, instructions for the proper use of the machine including advice on what the machine should be used for, how to use it for the intended purpose(s) and any reasonably foreseeable misuse thereof,

e) warnings concerning ways - that experience has shown might occur - in which the machinery shall not be used,

f) instructions for the proper assembly and disassembly of the machine for use, if the machine is not supplied in a completely assembled form,

g) instructions for proper adjustment and any necessary user maintenance of the machine, including timescales and a warning of the danger of moving hazardous parts,

h) instructions for the recommended replacement or repair of, or service attention to critical components Where parts are consumable, the part number of the spare part shall be specified, i) instructions on the operation of all controls,

j) information how to start the machine safely,

k) instructions for the operating position and the correct and safe operation of the machine such as moving, safe positioning, handling, clearing blockages for use, preparation, maintenance and storage of the machine,

l) an advice not to overreach and to keep balance at all times, to always be sure of footing on slopes and to walk, never run,

m) a warning not to touch moving hazardous parts before the machine is disconnected from the mains and the moving hazardous parts have come to a complete stop,

n) an advice on the use, length and type of extension cords to be used (not lighter than required by 25.7),

o) information about the residual risks that remain despite the inherent safe design measures, safeguarding and complementary protective measures adopted,

p) instructions to always wear substantial footwear and long trousers while operating the machine, q) instructions to disconnect the supply (e.g remove the plug from the mains or remove the disabling device)

- whenever the machine is left by the user,

- before clearing a blockage,

- before checking, cleaning or working on the machine,

- after striking a foreign object to inspect the machine for damage,

- if the machine starts to vibrate abnormally, for immediately check,

r) instructions when, where and how to inspect the machine, the supply and extension cord for signs

of damage or ageing and, if permitted, how to make repairs,

s) a warning never to operate the machine with defective guards or shields, or without safety

devices, or if the cord is damaged or worn,

t) an advice not to connect a damaged cord to the supply or touch a damaged cord before it is disconnected from the supply for the reason that damaged cords can lead to contact with live parts,

u) an advice to keep extension cords away from moving hazardous parts to avoid damages to the cords which can lead to contact with live parts,

v) the operating method to be followed in the event of accident or breakdown,

w) instructions how to disconnect the machine from the mains, if the cord becomes damaged or entangled during use,

y) information about airborne noise emissions of the machine according to Annex CC, this includes

- the A- weighted emission sound pressure level emitted by the machinery, where this exceeds

70 dB(A), where this level does not exceed 70 dB(A), this fact shall be indicated,

- the peak C-weighted instantaneous sound pressure value at machinery, where this exceeds

- the uncertainty of measurement for vibration value;

- instructions how to proceed in case of abnormal vibrations;

- mass in kilograms

NOTE Examples of safety instructions are given Annex EE

Compliance shall be checked by inspection

7.12.1 This clause of Part 1 is applicable

7.12.5 to 7.12.6 These clauses of Part 1 are applicable

This clause of Part 1 is applicable

9 Starting of motor-operated appliances

This clause of Part 1 is not applicable

This clause of Part 1 is not applicable

This clause of Part 1 is applicable except as follows

11.4 Not applicable

11.5 Replacement:

The machine is operated in still air under normal operation conditions until a steady state is reached,

the torque being applied is measured While the torque is maintained, the voltage is then adjusted to 0,94 times the rated voltage or 1,06 times the rated voltage, or the mean of the rated voltage range, whichever is the most unfavourable

11.6 Not applicable

11.7 Replacement:

Machines are operated until steady conditions are established

This clause of Part 1 is applicable for class II machines

This clause of Part 1 is applicable

This clause of Part 1 is applicable

This clause of Part 1 is applicable for class II machines

This clause of Part 1 is applicable

18 Endurance

This clause of Part 1 is not applicable to battery powered machines

For mains operated machines this clause of Part 1 is applicable except as follows

18.101 Machines shall be so constructed that, in normal use, there will be no electrical or mechanical

failure that might impair compliance with this European Standard The insulation shall not be damaged and contacts and connections shall not work loose as a result of heating, vibrations, etc

Moreover, overload protection devices shall not operate under normal running conditions

Compliance is checked by the test of Clause 18.102

Immediately after the test, the machine shall withstand an electric strength test as specified

in Clause 16 Connections shall not have worked loose, and there shall be no deterioration impairing safety in normal use

18.102 The machine is operated with the plane of the cutting means horizontal and at no load for

15 h of operation at a voltage equal to 1,1 times rated voltage, and then for 15 h at a supply voltage

equal to 0,9 times rated voltage The machine may be operated for a number of periods, each period

being not less than 7 h

During this test, the machine is maintained according to the instruction manual and replacement of the carbon brushes is allowed

During these tests, overload protection devices shall not operate

For mains operated machines this clause of Part 1 is applicable except as follows:

19.7 Not applicable

19.9 Not applicable

This clause of Part 1 is applicable except as follows

20.1 Not applicable

20.2 Replacement:

All power driven transmission parts (other than the cutting means) shall be guarded to prevent the

operator's contact with these parts

All guards shall be either permanently attached, or secured by screws, nuts or snap fits to prevent removal

Fixed guards that the user is instructed to remove for regular maintenance shall have their fixing means retained on either the guard or the body of the machine

Compliance to be checked by inspection

20.101 Cutting means configuration

Cutting means shall be so constructed, that the shear plate teeth extend at least 2 mm beyond the

moving cutter teeth The extension shall be measured for each cutter blade/shear plate tooth

combination (see Figure 103)

20.102 Hand protection

The housing shall be so constructed, that inadvertent contact of the hand holding the machine with the

cutter blade(s) shall be prevented

This shall be achieved if the handle is so constructed that it is attached to the machine at the front of the handle grip and the shortest distance between the front of the handle grip and the nearest root of a

cutter blade tooth is at least 120 mm (see Figure 104)

The distances shall be measured along the shortest path from the front of the handle grip to the nearest cutting edge of a cutter blade

Compliance shall be checked by inspection and measurement

20.103 Noise reduction

20.103.1 Reduction at source by design and protective measures

Noise reduction shall be an integral part of the design process thus specifically taking into account measures at source The success of the applied noise reduction measures is assessed on the bases

of the actual noise emission values in relation to other machines of the same family If required to be declared, the noise test code of Annex CC shall be used for the determination of the sound power level and of the emission sound pressure level at the operator's position The main sources causing noise are:

− air intake system;

− recommends the use of low-noise operating modes, and/or limited time of operation,

− gives a warning of the noise level and recommends the use of ear protection

20.104 Vibration reduction

20.104.1 Reduction by design and protective measures

The machine shall be designed to generate a vibration level as low as practicable If required to be declared, the vibration test code of Annex BB shall be used for the measurement of hand-arm vibration The main sources causing vibration are the

− oscillating forces from the motor,

− cutting means,

− unbalanced moving parts,

− impact in gears, bearings and other mechanisms,

− interaction between operator, machine and material being worked,

− machine design related to mobility,

− travelling surface, speed, tyre pressure

NOTE 1 CR 1030-1:1995 gives general technical information on widely recognized technical rules and means to be followed in the design of machines for low hand-arm vibration solutions

NOTE 2 Besides the vibration reduction of the source, technical measures to isolate the vibration source from the handle may

be used, when appropriate, such as isolators and resonating masses

20.104.2 Reduction by information

If required, after taking possible technical measures for vibration reduction, it is still recommended that, when appropriate, the instruction manual recommends

− the use of low-vibration operating modes, and/or limited time of operation,

− the wearing of personal protection equipment (PPE)

This clause of Part 1 is applicable except as follows

21.1 Replacement of the third paragraph:

The machine is rigidly supported and three blows are applied to every point of the enclosure that is likely to be weak

The impact energy will be 1,0 ± 0,05 J and blows shall also be applied to handles, levers, knobs, handle shafts and cutting elements

21.101 General

The mechanical strength of the machine shall be adequate for normal use

Compliance shall be checked by the tests given in Clause 21.102 and 21.103

21.102 Strength and rigidity

One sample of the complete machine shall be dropped three times so that it falls through a vertical distance of (900 ± 10) mm onto a smooth horizontal concrete surface in such a manner as to test the

strength of the machine most severely (see Figure 105) Each of the three drops shall be so conducted that the machine receives an impact in a location different from the other two

A string can be used to suspend the machine so that the desired orientation of the machine can be achieved Cutting the string will allow the machine to fall in the correct orientation to test the relevant part

No parts of the machine that are necessary for safe operation shall become detached and no visible cracks shall have developed

It is not necessary for the machine to be operable after the test but, if it is operable, then immediately following this test, it shall be run at its maximum speed for 30 s and again, no parts of the machine that are necessary for safe operation shall become detached and no visible cracks shall have developed

21.103 Cutting means strength and rigidity

The rigidity and mounting of the cutting means of the machine shall be capable of safely withstanding

impact with a hard object This shall be tested by fixing the machine on a steel plate or a smooth concrete surface in such a manner that a test piece can be easily introduced into the cutting means

The test piece shall be a nominal 15 mm diameter copper tube, having a nominal wall thickness of

1 mm as specified in EN 12449:1999 (see Figure 106) or of other material with comparable characteristics The tube shall be fixed into a suitable carrying device

The machine shall be run at maximum speed, then the tube shall be introduced into the cutting means at a speed of 1 m/s The machine shall continue to be run for 15 s or until the blades stop or

the tube is cut

No part of a cutter blade or the cutting means shall become detached Any breakage of a cutter blade shall be considered failure of the test Breakage of a drive shearing device or chipping of the

blade cutting edge shall not be deemed to be a test failure

It is not necessary for the machine to be operable after the test

This clause of Part 1 is applicable except as follows

22.12 Addition:

Machines shall have at least one handle The handle(s) shall be designed in such a way that each

one can be grasped with one hand

The gripping length of handles shall be at least 100 mm long On bail or closed handles (U-shaped handles), this dimension is related to the inner width of the gripping surface On straight handles, it is the complete length between the housing and the end of the handle

The gripping length of a bail or closed handle shall comprise any length that is straight or curved at a radius of greater than 100 mm together with any blend radius but not more than 10 mm at either or both ends of the gripping surface

There shall be a minimum radial clearance of 25 mm around the gripping length

If a part containing the motor complies with the dimensions above, it may be considered as a handle

If a straight handle is supported centrally (i.e ‘T’ type) the gripping length shall be calculated as follows:

a) for handles with a periphery (not including the support) less than 80 mm, the gripping length is the sum of two parts on either side of the support;

b) for handles with a periphery (not including the support) of 80 mm or more, the gripping length is the complete length from end to end

Where appropriate, the part of the handle containing the cutting means control shall be counted as

part of the handle gripping length Finger grip or similar superimposed profiles shall not affect the method of calculating handle gripping length

Handles shall be positively locked in position If they are adjustable in different positions, it shall not be possible to lock them in a position which contravenes other provisions of this European Standard

22.30 Addition:

Machines shall be constructed so as to prevent bridging of supplementary insulation and reinforced insulation by grass cuttings or other debris

22.35 Addition:

For class II machines, handles and operator controls which are held when operating the machine shall

either be of insulating material or covered by insulating material having a thickness of at least 1 mm, or separated by insulation equivalent to supplementary insulation from other accessible metal parts

Compliance is checked by inspection, by measurement and for the insulating material covering on handles, operator controls and handle shafts, by the following tests

A sample of the covered part is conditioned at a temperature of 70 °C ± 2 °C for seven days (168 h) After conditioning, the sample is allowed to attain approximately room temperature

Inspection shall show that the covering has not shrunk to such an extent that the required length or the required insulation is no longer provided or that the covering has not peeled off, so that it can move longitudinally

After this, the sample is maintained for 4 h at a temperature of -10 °C ± 2 °C

While still at this temperature, the sample is then subjected to impact by means of the apparatus shown in Figure 107 The weight A having a mass of 300 g is dropped from a height of 350 mm onto the chisel B of hardened steel, the tip of which is placed on the sample

One impact is applied to each place where the covering is likely to be weak or damaged in intended use, the distance between the points of impact being at least 10 mm

After this test, inspection shall show that the covering has not peeled off and an electric strength test is made between metal parts and metal foil wrapped around the covering in the area required to be insulated

The test voltage of 2 500 V is applied for 1 min

During this test, no flashover or breakdown shall occur

22.40 Addition:

A cutting means control shall be provided and either this shall require two separate and dissimilar

actions before the cutting means can be driven, or the control shall be guarded to prevent inadvertent

operation There shall be no means of locking this control in the ‘On’ position The cutting means

shall come to rest after the control is released

Compliance shall be checked by inspection and for a guarded cutting means control, it shall not be

possible to operate the control by means of a (100 ± 1) mm diameter sphere

22.101 Control on extension shaft

If an extension shaft is used, the control on the extension shaft shall override or duplicate the

original switch

Compliance is checked by inspection and by practical test

22.102 Cutting means protective cover

A protective cover for the cutting means shall be provided It shall be suitable for covering the cutting means during transportation or when the machine is stored

The cover shall stay in its protective position when holding the machine with the covered cutting means pointing vertically downwards

Compliance is checked by inspection and by practical test

Switches operated by the cutting means control to energise the motor shall have a total contact

separation of at least 3 mm This shall be achieved either by single or double pole disconnection Switches shall have been satisfactorily tested for at least 10 000 operations

This clause of Part 1 is applicable except as follows

25.5 Replacement:

Machines shall be provided with one of the following:

− a supply cord not less than 6 m in length with the type X attachment, or

− a supply cord of length not exceeding 0,3 m , measuring the visible cable between the two cable

protectors, with type X or Y attachment and terminating in a cable coupler, or

− an appliance inlet

Compliance is checked by inspection and measuring the visible cord length

25.7 Replacement of the first paragraph:

Supply cords shall not be lighter than

− if rubber insulated, ordinary tough rubber sheathed flexible cord (code designation

25.101 If the machine is delivered with an extension cord, which can also be used with other

machines, the extension cord shall be marked with the maximum rated current or power

Compliance is checked by inspection

This clause of Part 1 is applicable

This clause of Part 1 is applicable

This clause of Part 1 is applicable

This clause of Part 1 is applicable except as follows

29.2 Addition:

Pollution degree 3 applies for this machine

30 Resistance to heat and fire

This clause of Part 1 is applicable except as follows:

30.2.3 Not applicable

This clause of Part 1 is applicable

This clause of Part 1 is applicable except as follows:

Addition:

Machines are tested according to EN 62233 unless an extension shaft with a length exceeding 0,5 m

is permanently attached

1 cutter blade (bottom)

2 cutter blade (top)

3 blade teeth

4 cutting width

Figure 101 – Parts of cutting means (see 3.103, 3.104) –

Cutting width (see 3.101)

Figure 102 – Examples of grass shears (see 3.102)

X

a) Handle not attached at front

(does not comply with20.102) b) Handle attached at front (complies with 20.102)

c) Handle attached at front and rear

(does not comply with 20.102) d) Handle attached at front and rear (complies with 20.102)

Key

X ≥ 120 mm

Y < 120 mm

Figure 104 – Examples of compliance/non-compliance and measurement method

for hand protection (see 20.102)

2 smooth horizontal concrete

Figure 105 – Example showing the layout for the strength test and a possible orientation

for the machine (see 21.102)