SIST EN IEC 62841-4-5:2022
(Main)Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-5: Particular requirements for grass shears
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-5: Particular requirements for grass shears
IEC 62841-4-5:2021 This document applies to grass shears with a maximum cutting width of 200 mm designed primarily for cutting grass.
This document does not apply to hedge trimmers.
Hedge trimmers are covered by IEC 62841-4-2.
Elektrische motorbetriebene handgeführte Werkzeuge, transportable Werkzeuge und Rasen- und Gartenmaschinen – Sicherheit – Teil 4-5: Besondere Anforderungen für Grasscheren
Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 4-5: Exigences particulières pour les cisailles à gazon
IEC 62841-4-5:2021 Le présent document s'applique aux cisailles à gazon d'une largeur de coupe maximale de 200 mm, conçues principalement pour la tonte du gazon.
Le présent document ne s'applique pas aux taille-haies.
Les taille-haies sont couverts par l'IEC 62841-4-2.
Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 4-5. del: Posebne zahteve za škarje za travo
Ta dokument se uporablja za škarje za travo z največjo širino rezanja 200 mm, ki so zasnovane predvsem za rezanje trave.
Ta dokument se ne uporablja za škarje za živo mejo.
OPOMBA 101: Škarje za živo mejo so zajete v standardu IEC 62841-4-2.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2022
Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 4-
5. del: Posebne zahteve za škarje za travo
Electric motor-operated hand-held tools, transportable tools and lawn and garden
machinery - Safety - Part 4-5: Particular requirements for grass shears
Elektrische motorbetriebene handgeführte Werkzeuge, transportable Werkzeuge und
Rasen- und Gartenmaschinen – Sicherheit – Teil 4-5: Besondere Anforderungen für
Grasscheren
Ta slovenski standard je istoveten z: EN IEC 62841-4-5:2021
ICS:
25.140.20 Električna orodja Electric tools
65.060.70 Vrtnarska oprema Horticultural equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 62841-4-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2021
ICS 25.140.20
English Version
Electric motor-operated hand-held tools, transportable tools and
lawn and garden machinery - Safety - Part 4-5: Particular
requirements for grass shears
(IEC 62841-4-5:2021)
Outils électroportatifs à moteur, outils portables et machines Elektrische motorbetriebene handgeführte Werkzeuge,
pour jardins et pelouses - Sécurité - Partie 4-5: Exigences transportable Werkzeuge und Rasen- und
particulières pour les cisailles à gazon Gartenmaschinen - Sicherheit - Teil 4-5: Besondere
(IEC 62841-4-5:2021) Anforderungen für Grasscheren
(IEC 62841-4-5:2021)
This European Standard was approved by CENELEC on 2021-09-28. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62841-4-5:2021 E
European foreword
The text of document 116/495/FDIS, future edition 1 of IEC 62841-4-5, prepared by IEC/TC 116
"Safety of motor-operated electric tools" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62841-4-5:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-06-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-09-28
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association, and supports essential
requirements of EU Directive(s) / Regulation(s).
For the relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an
integral part of EN IEC 62841-4-5:2021/A11:2021.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62841-4-5:2021 was approved by CENELEC as a
European Standard without any modification.
IEC 62841-4-5 ®
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-5: Particular requirements for grass shears
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.140.20 ISBN 978-2-8322-9807-7
– 2 – IEC 62841-4-5:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General requirements . 11
5 General conditions for the tests . 11
6 Radiation, toxicity and similar hazards . 12
7 Classification . 12
8 Marking and instructions . 12
9 Protection against access to live parts . 14
10 Starting . 14
11 Input and current . 14
12 Heating . 14
13 Resistance to heat and fire . 15
14 Moisture resistance . 15
15 Resistance to rusting . 15
16 Overload protection of transformers and associated circuits . 15
17 Endurance . 16
18 Abnormal operation . 16
19 Mechanical hazards . 16
20 Mechanical strength . 28
21 Construction . 35
22 Internal wiring . 38
23 Components . 38
24 Supply connection and external flexible cords . 38
25 Terminals for external conductors . 40
26 Provision for earthing . 40
27 Screws and connections . 40
28 Creepage distances, clearances and distances through insulation . 40
Annexes . 45
Annex I (informative) Measurement of noise and vibration emissions . 45
Annex K (normative) Battery tools and battery packs . 53
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 62
Annex AA (normative) Safety signs for safety instructions and warnings . 67
Annex BB (informative) Example of a material and construction fulfilling the
requirements for an artificial surface . 69
Bibliography . 71
Figure 101 – Cutting device with one cutter blade and shear plate . 9
Figure 102 – Cutting device with two cutter blades . 10
IEC 62841-4-5:2021 © IEC 2021 – 3 –
Figure 103 – Examples of grass shears . 11
Figure 104 – Measurement of handle dimensions . 18
Figure 105 – Measurement of handle dimensions for machines fitted with an extension
shaft . 19
Figure 106 – Minimum radial clearance around the power switch . 19
Figure 107 – Examples of handle attachment and measurement of distance for hand
protection . 22
Figure 108 – Measurement of distance for hand protection for machines with a front
hand barrier . 24
Figure 109 – Measurement of distance for hand protection for machines with bail or
closed handles or centrally supported (i.e. T-type) handles without a front hand barrier . 25
Figure 110 – Projection incorporated as an integral part of a cutter blade . 26
Figure 111 – Projection incorporated as an integral part of a shear plate . 27
Figure 112 – Projection as a separate stationary plate . 28
Figure 113 – Grass shear positions for drop test . 31
Figure 114 – Impact test apparatus for handle insulation . 33
Figure 115 – Cutting device strength test . 34
Figure 116 – Example of a lock-off device located within the gripping surface of a
handle . 37
Figure 117 – Example of an operator presence sensor. 38
Figure 118 – Test assembly for accessibility of attachment plug blades . 39
Figure I.101 – Microphone positions on the hemisphere (see Table I.101) . 45
Figure I.102 – Positions of transducers for grass shears . 51
Figure AA.1 – Safety sign illustrating – "DANGER – Keep hands away from blade". 67
Figure AA.2 – Alternative safety sign illustrating – "DANGER – Keep hands away from
blade" . 67
Figure AA.3 – Safety sign illustrating – "Do not expose to rain" . 68
Figure AA.4 – Safety sign illustrating – "Remove plug from the mains immediately if the
cable is damaged or cut" . 68
Figure AA.5 – Safety sign illustrating – "Wear ear protection" . 68
Figure BB.1 – Sketch of the measurement surface covered with an artificial surface . 70
Table 4 – Required performance levels . 16
Table 7 – Switch trigger force . 35
Table 12 – Minimum creepage distances and clearances . 42
Table I.101 – Coordinates of microphone positions . 47
Table I.102 – Absorption coefficients . 47
Table 301 – Pull and torque value . 58
Table K.1 – Minimum creepage distances and clearances between parts of different
potential . 59
Table K.2 – Minimum total sum of creepage distances and clearances to accessible
surfaces . 60
– 4 – IEC 62841-4-5:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 4-5: Particular requirements for grass shears
FOREWORD
1) The International Electrotechnical 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. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
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 of recommendations for international use and are accepted by IEC National
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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation 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 regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited 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 any or all such patent rights.
IEC 62841-4-5 has been prepared by IEC technical committee 116: Safety of motor-operated
electric tools. It is an International Standard.
The text of this International Standard is based on the following documents:
FDIS Report on voting
116/495/FDIS 116/502/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
IEC 62841-4-5:2021 © IEC 2021 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/standardsdev/publications.
This Part 4-5 is to be used in conjunction with the first edition of IEC 62841-1:2014.
This Part 4-5 supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC Standard: Particular requirements for grass shears.
Where a particular subclause of Part 1 is not mentioned in this Part 4-5, that subclause
applies as far as relevant. Where this standard states "addition", "modification" or
"replacement", the relevant text in Part 1 is to be adapted accordingly.
The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
notes: in small roman type.
–
The terms defined in Clause 3 are printed in bold typeface.
Subclauses, notes, tables and figures which are additional to those in Part 1, except as
described for Annex K and Annex L below, are numbered starting from 101.
Subclauses, notes, tables and figures in Annex K and Annex L which are additional to those in
the main body of this Part 4-5 are numbered starting from 301.
A list of all parts of the IEC 62841 series, under the general title: Electric motor-operated
hand-held tools, transportable tools and lawn and garden machinery – Safety, can be found
on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 36 months from the date of publication.
– 6 – IEC 62841-4-5:2021 © IEC 2021
INTRODUCTION
The International Electrotechnical Commission (IEC) draws attention to the fact that it is
claimed that compliance with this document may involve the use of a patent. IEC takes no
position concerning the evidence, validity, and scope of this patent right.
The holder of this patent right has assured IEC that s/he is willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world.
In this respect, the statement of the holder of this patent right is registered with IEC.
Information may be obtained from the patent database available at http://patents.iec.ch.
Attention is drawn to the possibility that some of the elements of this document may be the
subject of patent rights other than those in the patent database. IEC shall not be held
responsible for identifying any or all such patent rights.
IEC 62841-4-5:2021 © IEC 2021 – 7 –
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 4-5: Particular requirements for grass shears
1 Scope
This clause of Part 1 is applicable, except as follows.
Addition:
This document applies to grass shears with a maximum cutting width of 200 mm designed
primarily for cutting grass.
This document does not apply to hedge trimmers.
NOTE 101 Hedge trimmers are covered by IEC 62841-4-2.
2 Normative references
This clause of Part 1 is applicable, except as follows.
Addition:
IEC 60664-3, Insulation coordination for equipment within low-voltage systems – Part 3: Use
of coating, potting or moulding for protection against pollution
IEC 60664-4, Insulation coordination for equipment within low-voltage systems – Part 4:
Consideration of high-frequency voltage stress
ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
ISO 22868:2011 , Forestry and gardening machinery – Noise test code for portable hand-held
machines with internal combustion engine – Engineering method (Grade 2 accuracy)
Replacement:
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
reflecting plane
______________
Withdrawn.
– 8 – IEC 62841-4-5:2021 © IEC 2021
3 Terms and definitions
This clause of Part 1 is applicable, except as follows.
3.101
blade tooth
part of the cutter blade which is sharpened to perform the shearing action
Note 101 to entry: See Figure 101 and Figure 102.
3.102
cutter blade
part of the cutting device having blade teeth which cut by shearing action either against
other blade teeth or against a shear plate
Note 101 to entry: See Figure 101 and Figure 102.
3.103
cutting device
part of the assembly of cutter blade and shear plate or of two cutter blades together with
any supporting part which performs the cutting action
Note 101 to entry: See Figure 101 and Figure 102.
3.104
cutting width
effective width of cut 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
Note 101 to entry: See Figure 101 and Figure 102.
3.105
extension shaft
shaft which enables the operator to cut grass while in a standing position, which is either
permanently attached to or removable from the machine
3.106
grass shear
hand-held scissors type grass-cutting machine with either one or two cutter blades where
either one or both cutter blade(s) reciprocate along a straight or curved path
Note 101 to entry: See Figure 103.
Note 102 to entry: These machines are 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.
3.107
maximum speed
highest cutting device speed attainable under all conditions of normal use, including no-load
3.108
operator presence sensor
device to detect the presence of an operator’s hand
3.109
projection
part of the cutter blade or shear plate or a separate component which extends beyond the
shearing portion of the cutting device
IEC 62841-4-5:2021 © IEC 2021 – 9 –
Note 101 to entry: See Figure 110, Figure 111 and Figure 112.
3.110
shear plate
moving or stationary unsharpened part of the cutting device which assists cutting by
shearing action against a cutter blade
Note 101 to entry: See Figure 101.
Top view Bottom view
Key
1 cutter blade
2 shear plate with projections
3 sharpened edge of blade tooth
4 blade tooth
5 cutting width
6 portion of shear plate which assists cutting by shearing action against a cutter blade
7 cutting device
Figure 101 – Cutting device with one cutter blade and shear plate
– 10 – IEC 62841-4-5:2021 © IEC 2021
Top view Bottom view
Key
1 cutter blade (top)
2 cutter blade (bottom) with projections
3 sharpened edge of blade tooth
4 blade tooth
5 cutting width
6 cutting device
Figure 102 – Cutting device with two cutter blades
IEC 62841-4-5:2021 © IEC 2021 – 11 –
a) Grass shear without extension shaft
b) Grass shear with extension shaft
Figure 103 – Examples of grass shears
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable, except as follows.
– 12 – IEC 62841-4-5:2021 © IEC 2021
5.8 Addition:
If different cutting devices for cutting grass can be mounted on the machine in accordance
with 8.14.2 a) and 8.14.2 b), the cutting devices are regarded as attachments.
5.17 Addition:
The mass of the machine excludes the cutting device cover.
5.101 The tests are carried out on the machine as supplied. However, a machine
constructed as a single machine but supplied in a number of units is tested after assembly in
accordance with 8.14.2.
5.102 Unless otherwise specified, for Clauses 19 and 21, machines are tested in each
operating configuration as described in 8.14.2.
5.103 For machines that do not attain maximum speed under no load conditions, the
manufacturer shall provide samples with special hardware and/or software in order to perform
the required tests.
6 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.
7 Classification
This clause of Part 1 is applicable.
8 Marking and instructions
This clause of Part 1 is applicable, except as follows.
8.2 Addition:
Grass shears shall be marked with the following safety information, as applicable, which shall
be written in one of the official languages of the country in which the machine is to be sold or
marked with the appropriate symbol.
For all machines:
– “Wear ear protection”, a relevant safety sign of ISO 7010 or the safety sign specified in
Figure AA.5. This marking may be omitted if the measured emission sound pressure level
at the operator’s ear in accordance with Annex I does not exceed 85 dB(A); and
– " DANGER – Keep hands away from blade"; or
– the safety sign specified in Figure AA.1; or
– the safety sign specified in Figure AA.2.
The DANGER marking or symbol shall be readily visible to the user and shall not be located
on the underside of the machine.
IEC 62841-4-5:2021 © IEC 2021 – 13 –
For all machines with a degree of protection of less than IPX4:
– " WARNING – Do not expose to rain"; or
– the safety sign specified in Figure AA.3.
For mains supplied machines:
– " WARNING – Remove plug from the mains immediately if the cable is damaged or cut";
or
– the safety sign specified in Figure AA.4.
8.12 Replacement of the first paragraph:
Markings required by the standard shall be legible and durable. Signs shall be in contrast
such as colour, texture, or relief, to their background such that the information or instructions
provided by the signs are clearly legible when viewed with normal vision from a distance of
(500 ± 50) mm. Signs need not be in accordance with the colour requirements of ISO 3864-2.
If markings are embossed, stamped or moulded, contrasting colours are not required.
8.14.1 Addition:
The additional safety instructions as specified in 8.14.1.101 shall be given for all mains
supplied grass shears. This part may be printed separately from the "General Machine Safety
Warnings".
NOTE 101 "General Machine Safety Warnings" are referred to as "General Power Tool Safety Warnings" in
Part 1.
8.14.1.1 Addition to item 2) c):
For machines classified at least IPX4, the warning may be replaced as specified below.
c) Do not operate the machine in rain or wet conditions. Water entering the machine
may increase the risk of electric shock or malfunction that could result in personal injury.
8.14.1.101 Safety instructions for grass shears
For grass shears that can be converted to a Category 1 hedge trimmer, the term “grass
shear” may be replaced by alternate wording (e.g. “grass shear/hedge trimmer” or “grass
shear/shrub shear”). For this case, the verbatim warnings below need not be repeated for the
two configurations.
Grass shears safety warnings:
a) Do not use the grass shear in bad weather conditions, especially when there is a
risk of lightning. This decreases the risk of being struck by lightning.
b) Keep all power cords and cables away from cutting area. Power cords or cables may
be hidden and can be accidentally cut by the blade.
c) Wear ear protection. Adequate protective equipment will reduce the risk of hearing loss.
NOTE 101 This warning can be omitted if the measured emission sound pressure level at the operator’s ear
in accordance with Annex I does not exceed 85 dB(A).
d) Hold the grass shear by insulated gripping surfaces only, because the blade may
contact hidden wiring or its own cord. Blades contacting a "live" wire may make
exposed metal parts of the grass shear "live" and could give the operator an electric
shock.
– 14 – IEC 62841-4-5:2021 © IEC 2021
e) Keep all parts of the body away from the blade. Do not remove cut material or hold
material to be cut when blades are moving. Blades continue to move after the switch is
turned off. A moment of inattention while operating the grass shear may result in serious
personal injury.
f) When clearing jammed material or servicing the grass shear, make sure the power
switch is off and the power cord is disconnected. Unexpected actuation of the grass
shear while clearing jammed material or servicing may result in serious personal injury.
g) Carry the grass shear by the handle with the blade stopped and taking care not to
operate the power switch. Proper carrying of the grass shear will decrease the risk of
inadvertent starting and resultant personal injury from the blades.
h) When transporting or storing the grass shear, always use the blade cover. Proper
handling of the grass shear will decrease the risk of personal injury from the blades.
8.14.2 a) Addition:
101) If applicable, information on cutting devices and attachments permitted to be used
with the grass shear, e.g. an extension shaft;
102) Instructions for configuring the machine, including any handle, ground supporting
devices, accessories or attachments.
8.14.2 b) Addition:
101) Advice to check for foreign objects, e.g. debris and hidden wiring;
102) Recommendation for the use of a residual current device with a tripping current of
30 mA or less;
103) Identification of gripping surfaces of handle(s) required by 19.101 through 19.103;
104) Instruction to hold the grass shear properly;
105) Advice that the grass shear is intended to be used by the operator at ground level and
not on ladders or any other unstable support;
106) Advice that before operating the grass shear, the user should make sure the
extension shaft, if any, is in the locked position;
107) Instructions for location and use of the power switch for the operation of the grass
shear;
108) For grass shears with an adjustable handle in accordance with 19.102, instruction to
adjust the handle only while the cutting device is not operating.
9 Protection against access to live parts
This clause of Part 1 is applicable.
10 Starting
This clause of Part 1 is applicable.
11 Input and current
This clause of Part 1 is applicable.
12 Heating
This clause of Part 1 is applicable, except as follows.
IEC 62841-4-5:2021 © IEC 2021 – 15 –
12.2.1 Replacement:
The load conditions for the heating test of 12.2 are as follows:
The machine is operated with a torque load applied such that rated input or rated current is
drawn. The machine is operated for 30 min in its most unfavourable configuration in
accordance with 8.14.2 a) 102). During this period, the torque load is adjusted as necessary
to maintain rated input or rated current.
13 Resistance to heat and fire
This clause of Part 1 is applicable.
14 Moisture resistance
This clause of Part 1 is applicable, except as follows.
14.2.1 Replacement:
The machine is not connected to the supply.
The machine is placed in its normal rest position on a perforated turntable. The turntable is
then turned continuously at (1 ± 0,1)/min during the test.
Detachable parts are removed and subjected, if necessary, to the relevant treatment with the
main part. Movable covers that are non-detachable parts and are not self-restoring are
placed in the most unfavourable position.
NOTE Examples of self-restoring covers include those that are spring loaded or close by gravity.
14.2.2 Replacement of the last paragraph:
Immediately after the appropriate treatment, the machine shall withstand the electric strength
test of Annex D between live parts and accessible parts, the test voltage being 2 500 V.
Then the machine is connected to the supply. It shall not start with the power switch in the
“off” position.
Afterwards, inspection shall show that there is no trace of water on insulation which could result
in a reduction of creepage distances between bare conductors of different potential below the
values specified in 28.1. For all instances where creepage distances could be reduced below
the values specified in 28.1, a short circuit is introduced between adjacent conductors
simultaneously. The machine is then evaluated for
– the risk of fire in accordance with item a) of 18.6.1; and
– the loss of any SCF, unless the machine is rendered into a safe state.
15 Resistance to rusting
This clause of Part 1 is applicable.
16 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
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17 Endurance
This clause of Part 1 is applicable, except as follows.
17.2 Modification:
This subclause of Part 1 is applicable as for hand-held tools.
Addition:
The machine is operated in its most unfavourable configuration in accordance with
8.14.2 a) 102).
Care shall be taken to avoid overheating the cutting device by operating continuously and
therefore appropriate interruptions for cooling and lubrication may be introduced.
18 Abnormal operation
This clause of Part 1 is applicable, except as follows.
18.5 Modification:
The requirements for tools other than lawn and garden machinery are applicable.
18.8 Replacement of Table 4 by the following:
Table 4 – Required performance levels
Type and purpose of SCF Minimum Performance
Level (PL)
Power switch – prevent unwanted switch-on b
Power switch – provide desired switch-off b
Prevent exceeding thermal limits as in Clause 18 a
Any electronic control relied upon to pass the test of 20.101 a
Lock-off function as required in 21.18.103.1 a
Visible or audible indicator as referenced in 21.18.103.1 Not an SCF
Operator presence sensor as in 21.18.103.2 a
Prevent self-resetting as required in 23.3 a
19 Mechanical hazards
This clause of Part 1 is applicable, except as follows.
19.1 Replacement of the first paragraph:
All power-driven hazardous parts (e.g. gears), other than those moving parts (e.g. cutting
device), barriers and covers which are separately covered by 19.103, 19.104 and 19.105,
shall be so positioned or enclosed to provide adequate protection. The requirements of this
subclause apply to all operating configurations as described in 8.14.2.
19.3 This subclause of Part 1 is not applicable.
IEC 62841-4-5:2021 © IEC 2021 – 17 –
19.4 This subclause of Part 1 is not applicable.
NOTE 101 Requirements for handles are given in 19.101.
19.6 This subclause of Part 1 is not applicable.
19.7 This subclause of Part 1 is not applicable.
19.8 This subclause of Part 1 is not applicable.
19.101 Handles
19.101.1 General
If a part containing the motor complies with the dimensions for a handle, it may be considered
to be a handle if identified in accordance with 8.14.2 b) 103).
The handle shall be designed in such a way that it can be grasped with one hand. The
gripping length of the handle shall be suitably shaped to be grasped securely and have a
perimeter between 65 mm and 170 mm as illustrated in Figure 104 a), 104 b) or 104 c). The
perimeter is determined by a chain measurement with the power switch, if any, fully
depressed.
If there are finger grips or similar superimposed profiles, the handle gripping length shall not
be measured along the surface, but only the arc or straight-line distance of the gripping
surface, as applicable, shall be taken into account.
The gripping length L in Figure 104 c) and Figure 105 a) shall be measured in accordance
with 19.101.3.
Compliance is checked by inspection and by measurement.
Key
A gripping length in region X
B transition radius length in region Y
L maximum gripping length
P perimeter
a) Measurement of gripping length of a U-shaped or closed handle
– 18 – IEC 62841-4-5:2021 © IEC 2021
Key
P perimeter of handle (not including the support)
X part of gripping length
Y part of gripping length
Z complete length
b) Measurement of gripping length of a straight handle supported centrally (i.e. T type)
Key
L maximum gripping length
P perimeter
c) Measurement of gripping length and perimeter dimension
of the inline handle incorporating the power switch
Figure 104 – Measurement of handle dimensions
19.101.2 Handle that incorporates the power switch
Grass shears shall have at least one handle that incorporates the power switch
– for machines not fitted with an extension shaft, which is an inline handle as shown in
Figure 104 c); or
– for machines fitted with an extension shaft, as shown in Figure 105 a) or Figure 105 b).
The gripping length L of a handle incorporating a power switch shall be at least 100 mm.
There shall be a minimum radial clearance of 25 mm around the power switch with the
power switch actuator not depressed as shown in Figure 106.
IEC 62841-4-5:2021 © IEC 2021 – 19 –
Key
L maximum gripping length
P perimeter
a) Measurement of handle dimensions for machines fitted with an extension shaft with an inline handle
b) Measurement of handle dimensions that are formed by an extension shaft
Figure 105 – Measurement of handle dimensions
for machines fitted with an extension shaft
Dimensions in millimetres
Figure 106 – Minimum radial clearance around the power switch
For machines not fitted with an extension shaft, power switches shall not be incorporated
on bail or closed handles (U-shaped handles) as shown in Figure 104 a) or handles supported
centrally (i.e. T-type) as shown in Figure 104 b).
The extension shaft, if any, may have a power switch that is incorporated on
– an inline handle as shown in Figure 105 a); or
– 20 – IEC 62841-4-5:2021 © IEC 2021
– a handle that is formed by an extension shaft as shown in Figure 105 b); or
– a bail or closed handle (U-shaped handle) as shown in Figure 104 a); or
– a handle supported centrally (i.e. T-type) as shown in Figure 104 b).
For machines with a permanently attached extension shaft, the power switch shall only be
incorporated on a handle located on the extension shaft.
Compliance is checked by inspection and by measurement.
19.101.3 Dimensions of bail or closed handles
On bail or closed handles (U-shaped handles), the gripping length is related to the inner
length of the gripping surface. There shall be a minimum radial clearance of 25 mm around
the gripping length.
If a bail or closed handle is used, the gripping length L in Figure 104 a) shall be measured
using lengths A and B as follows:
– the length A is measured within region X where the radius is at least 100 mm;
– the length(s) B are measured within region(s) Y where the transition radius is less than
100 mm, but each length B cannot exceed 10 mm in each region Y of the gripping surface.
Compliance is checked by inspection and by measurement.
19.101.4 Dimensions of handles supported centrally (T–type)
If the handle is supported centrally (i.e. T-type), there shall be a minimum radial clearance of
25 mm around the gripping length. The gripping length shall be calculated as follows (see
Figure 104 b)):
– for a handle with a perimeter P (not including the support) of less than 80 mm, the gripping
length is the sum of the two parts of the gripping length X + Y on either side of the
support;
– for a handle with a perimeter P (not including the support) of 80 mm or more, the gripping
length is the complete length Z from end to end.
Compliance is checked by inspection and by measurement.
19.101.5 Dimensions of handles that are formed by a
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