IEC 62841-4-7:2022
(Main)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
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
IEC 62841-4-7:2022 clause 1 of IEC 62841-1:2014, is applicable, except as follows:
Addition:
This document applies to pedestrian controlled walk-behind lawn scarifiers and lawn aerators which are designed for regenerating lawns by combing out materials such as grass, thatch and moss or cutting vertically into the lawn face using
metallic tines; and/or
rigid non-metallic tines which rotate about a horizontal axis.
This document does not apply to
pedestrian controlled walk-behind lawnmowers;
towed/semi-mounted lawn scarifiers and lawn aerators;
ride-on machines;
non-powered lawn scarifiers and lawn aerators;
combustion engine powered lawn scarifiers and lawn aerators;
plug aerators (corers);
hybrid and fuel cell powered machines and associated charging systems; and
garden tractors or their attachments.
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
IEC 62841-4-7:2022, La clause 1 de la IEC 62841-1:2014 est applicable, sauf dans les cas suivants :
Addition:
Le présent document s’applique aux scarificateurs et aux aérateurs de pelouse contrôlés par les piétons qui sont conçus pour régénérer les pelouses en peignant des matériaux tels que l’herbe, le chaume et la mousse ou en coupant verticalement dans la taille de la pelouse à l’aide de
tiges métalliques; et/ou
tiges rigides non métalliques
qui tournent autour d’un axe horizontal.
Le présent document ne s’applique pas aux
tondeuses à gazon à marche contrôlées par les piétons;
scarificateurs de pelouse et aérateurs de pelouse remorqués/semi-montés;
machines autoportées;
scarificateurs de pelouse et aérateurs de pelouse non motorisés;
scarificateurs de pelouse et aérateurs de pelouse alimentés par moteur à combustion;
aérateurs de bouchon (corers);
les machines hybrides et à pile à combustible et les systèmes de charge associés; et
tracteurs de jardin ou leurs accessoires.
General Information
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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
IEC 62841-4-7:2022-07(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
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
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical CommissionMarque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 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
---------------------- Page: 4 ----------------------IEC 62841-4-7:2022 © IEC 2022 – 3 –
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 lawnaerators ................................................................................................................................ 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 thrownobjects – 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 frommains 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 batterybefore maintenance" ............................................................................................................. 77
Figure AA.6 – Product safety labels illustrating – "WARNING – Remove the disabling
device before maintenance" .................................................................................................. 78
Figure AA.7 – Product safety labels illustrating – "WARNING – Activate the disabling
device before maintenance" .................................................................................................. 79
Figure BB.1 – Test surface detail .......................................................................................... 80
Figure BB.2 – Example of test surface, nail plan ................................................................... 81
Figure CC.1 – Foot probe ..................................................................................................... 82
Figure CC.2 – Area to be probed for lawn scarifiers and lawn aerators ................................. 84
Figure EE.1 – Sketch of the measurement surface covered with an artificial surface ............. 88
Table 4 – Required performance levels ................................................................................. 20
Table 9 – Pull and torque value ............................................................................................ 42
Table 12 – Minimum creepage distances and clearances ...................................................... 44
Table I.101 – Co-ordinates of microphone positions .............................................................. 50
Table I.102 – Values of the constant a .................................................................................. 50
Table I.103 – Absorption coefficients .................................................................................... 50
Table 4 – Required performance levels ................................................................................. 61
Table K.301 – Pull and torque value ..................................................................................... 67
---------------------- Page: 5 ----------------------– 4 – IEC 62841-4-7:2022 © IEC 2022
Table K.1 – Minimum creepage distances and clearances between parts of different
potential ................................................................................................................................ 69
Table K.2 – Minimum total sum of creepage distances and clearances to accessiblesurfaces ................................................................................................................................ 70
---------------------- Page: 6 ----------------------IEC 62841-4-7:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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Publications.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 62841-4-7 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:
Draft Report on voting
116/589/FDIS 116/621/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.
---------------------- Page: 7 ----------------------
– 6 – IEC 62841-4-7:2022 © IEC 2022
This document is to be used in conjunction with the first edition of IEC 62841-1 (2014).
This document supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC Standard: Particular requirements for pedestrian controlled walk-behind
lawn scarifiers and aerators.Where a particular subclause of IEC 62841-1 is not mentioned in this document, that subclause
applies as far as reasonable. Where this document states "addition", "modification" or
"replacement", the relevant text in IEC 62841-1 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 IEC 62841-1 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 document are numbered starting from 301.A list of all parts in the IEC 62841 series, published 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.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.The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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.---------------------- Page: 8 ----------------------
IEC 62841-4-7:2022 © IEC 2022 – 7 –
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.---------------------- Page: 9 ----------------------
– 8 – IEC 62841-4-7:2022 © IEC 2022
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
1 Scope
IEC 62841-1:2014, Clause 1 is applicable, except as follows:
Addition:
This document applies to pedestrian controlled walk-behind lawn scarifiers and lawn aerators
which are designed for regenerating lawns by combing out materials such as grass, thatch and
moss or cutting vertically into the lawn face using– metallic tines; and/or
– rigid non-metallic tines
which rotate about a horizontal axis.
This document does not apply to
– pedestrian controlled walk-behind lawnmowers;
– towed/semi-mounted lawn scarifiers and lawn aerators;
– ride-on machines;
– non-powered lawn scarifiers and lawn aerators;
– combustion engine powered lawn scarifiers and lawn aerators;
– plug aerators (corers);
– hybrid and fuel cell powered machines and associated charging systems; and
– garden tractors or their attachments.
NOTE 101 Pedestrian controlled walk-behind lawnmowers are covered by IEC 62841-4-3.
2 Normative referencesIEC 62841-1:2014, Clause 2 is applicable, except as follows:
Addition:
IEC 60664-3:2016, Insulation coordination for equipment within low-voltage systems – Part 3:
Use of coating, potting or moulding for protection against pollutionIEC 60664-4:2005, Insulation coordination for equipment within low-voltage systems – Part 4:
Consideration of high-frequency voltage stressIEC 61058-2-6:2018, Switches for appliances – Part 2-6: Particular requirements for switches
used in electric motor-operated hand-held tools, transportable tools and lawn and garden
machinery---------------------- Page: 10 ----------------------
IEC 62841-4-7:2022 © IEC 2022 – 9 –
IEC 61672-1:2013, Electroacoustics – Sound level meters – Part 1: Specifications
IEC 62841-1:2014, Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety – Part 1: General requirementsISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
ISO 2758:2014, Paper – Determination of bursting strengthISO 13857:2019, Safety of machinery – Safety distances to prevent hazard zones being
reached by upper and lower limbsReplacement:
IEC 61058-1:2016, Switches for appliances – Part 1: General requirements
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 planeISO 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
3 Terms and definitionsIEC 62841-1:2014, Clause 3 is applicable, except as follows:
Addition:
3.101
catcher
part or combination of parts, intended to be used with the lawn scarifier or lawn aerator, which
provides a means for collecting material such as grass, thatch, moss or other debris
3.102cutting width
total width of scarification/aeration measured across the tines at 90° to the direction of travel
3.103discharge chute
extension of the tines enclosure from the discharge opening, generally used to control the
discharge of material from the tines3.104
discharge opening
gap or opening in the tines enclosure through which grass, thatch, moss and other debris may
be discharged3.104.1
front discharge
discharge opening for throwing out grass, thatch and moss so that they will be collected in a
catcher which is located in front of the tines---------------------- Page: 11 ----------------------
– 10 – IEC 62841-4-7:2022 © IEC 2022
3.104.2
rear discharge
discharge opening for throwing out grass, thatch and moss so that they will be collected in a
catcher which is located behind the tines3.105
lawn aerator
machine equipped with a tines assembly which uses the ground to determine the depth of cut,
designed for penetrating the lawn surfaceNote 101 to entry: See Figure 101.
Note 102 to entry: Lawn aerators that are designed to only make shallow cuts or slices in the soil are also known
as verticutters.3.106
lawn scarifier
machine equipped with a tines assembly designed to scratch the surface or earth face
Note 101 to entry: See Figure 101.Note 102 to entry: Lawn scarifiers are also known as lawn rakes and dethatchers.
3.107
maximum speed
highest steady-state tines speed attainable under all conditions of normal use, including
no-load, when adjusted in accordance with the manufacturer’s specifications and/or instructions
Note 101 to entry: The steady-state tines speed excludes transients such as overshoot that may occ
...
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