IEC 62841-4-7:2022

IEC 62841-4-7 ®
Edition 1.0 2022-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-7: Particular requirements for pedestrian controlled walk-behind lawn
scarifiers and aerators
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-7: Exigences particulières pour les scarificateurs à gazon et les
aérateurs de gazon à conducteur à pied

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
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
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.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
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.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Découvrez notre puissant moteur de recherche et consultez
webstore.iec.ch/advsearchform gratuitement tous les aperçus des publications. Avec un
La recherche avancée permet de trouver des publications IEC abonnement, vous aurez toujours accès à un contenu à jour
en utilisant différents critères (numéro de référence, texte, adapté à vos besoins.
comité d’études, …). Elle donne aussi des informations sur les
projets et les publications remplacées ou retirées. Electropedia - www.electropedia.org

Le premier dictionnaire d'électrotechnologie en ligne au monde,
IEC Just Published - webstore.iec.ch/justpublished
avec plus de 22 300 articles terminologiques en anglais et en
Restez informé sur les nouvelles publications IEC. Just
français, ainsi que les termes équivalents dans 19 langues
Published détaille les nouvelles publications parues.
additionnelles. Egalement appelé Vocabulaire
Disponible en ligne et une fois par mois par email.
Electrotechnique International (IEV) en ligne.

Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC Products & Services Portal - products.iec.ch

IEC 62841-4-7 ®
Edition 1.0 2022-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and

garden machinery – Safety –
Part 4-7: Particular requirements for pedestrian controlled walk-behind lawn

scarifiers and aerators
Outils électroportatifs à moteur, outils portables et machines pour jardins et

pelouses – Sécurité –
Partie 4-7: Exigences particulières pour les scarificateurs à gazon et les

aérateurs de gazon à conducteur à pied

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.30 ISBN 978-2-8322-3961-2

– 2 – IEC 62841-4-7:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General requirements . 12
5 General conditions for the tests . 12
6 Radiation, toxicity and similar hazards . 12
7 Classification . 12
8 Marking and instructions . 13
9 Protection against access to live parts . 16
10 Starting . 16
11 Input and current . 17
12 Heating . 17
13 Resistance to heat and fire . 17
14 Moisture resistance . 17
15 Resistance to rusting . 18
16 Overload protection of transformers and associated circuits . 19
17 Endurance . 19
18 Abnormal operation . 19
19 Mechanical hazards . 20
20 Mechanical strength . 33
21 Construction . 34
22 Internal wiring . 38
23 Components . 38
24 Supply connection and external flexible cords . 40
25 Terminals for external conductors . 42
26 Provision for earthing . 42
27 Screws and connections . 42
28 Creepage distances, clearances and distances through insulation . 42
Annexes . 47
Annex I (informative) Measurement of noise and vibration emissions . 47
Annex K (normative) Battery tools and battery packs . 56
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 71
Annex AA (normative) Product safety labels . 75
Annex BB (normative) Test surface . 80
Annex CC (normative) Lawn scarifier and lawn aerator foot protection test . 82
Annex DD (normative) Lawn scarifier and lawn aerator tines stopping time test . 85
Annex EE (informative) Example of a material and construction for fulfilling the
requirements for an artificial surface . 87
Bibliography . 89

Figure 101 – Example of a lawn scarifier or a lawn aerator . 11
Figure 102 – Operator control zones . 23
Figure 103 – Safety distances – single-axle machines . 25
Figure 104 – Handle distance – machines with more than one axle . 26
Figure 105 – Guarding of lawn scarifier and lawn aerator tines, general . 27
Figure 106 – Guarding of lawn scarifier and lawn aerator tines, side coverage . 28
Figure 107 – Guarding of lawn scarifier and lawn aerator tines, rear discharge . 29
Figure 108 – Guarding of lawn scarifier and lawn aerator tines, front discharge . 30
Figure 109 – Thrown object test rig for rear discharge lawn scarifiers and lawn aerators . 32
Figure 110 – Strength of tines assembly . 34
Figure 111 – Impact test fixture for handle insulation . 36
Figure 112 – Test assembly for accessibility of attachment plug blades . 41
Figure I.101 – Microphone positions on the hemisphere (see Table I.101) . 47
Figure I.102 – Examples of positions of transducers for lawn scarifiers and lawn
aerators . 54
Figure K.301 – Examples of separable battery pack connection points and direction of

applied force . 65
Figure AA.1 – Product safety labels illustrating – "WARNING – Beware of thrown
objects – keep bystanders away" . 75
Figure AA.2 – Product safety label illustrating – "WARNING – Keep hands and feet
away from the tines" . 76
Figure AA.3 – Product safety labels illustrating – "WARNING – Remove plug from

mains before maintenance or if cord is damaged" . 76
Figure AA.4 – Product safety label illustrating – "WARNING – Keep the supply cord
away from the tines" . 77
Figure AA.5 – Product safety labels illustrating – "WARNING – Disconnect battery
before maintenance" . 77
Figure AA.6 – Product safety labels illustrating – "WARNING – Remove the disabling

device before maintenance
...