IEC 62841-4-5:2021
(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.
The contents of the corrigendum of January 2024 have been included in this copy.
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.
Le contenu du corrigendum de janvier 2024 a été pris en considération dans cet exemplaire.
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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
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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International Standards for all electrical, electronic and related technologies.
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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
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
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3) IEC Publications have the form of recommen
...
IEC 62841-4-5 ®
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-5: Particular requirements for grass shears
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-5: Exigences particulières pour les cisailles à gazon
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
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The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
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If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
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IEC 62841-4-5 ®
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-5: Particular requirements for grass shears
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-5: Exigences particulières pour les cisailles à gazon
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-1074-6
– 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
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
...
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