IEC 62841-4-4:2020

Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-4: Particular requirements for lawn trimmers, lawn edge trimmers, grass trimmers, brush cutters and brush saws

IEC 62841-4-4:2020

Name:IEC 62841-4-4:2020   Standard name:Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-4: Particular requirements for lawn trimmers, lawn edge trimmers, grass trimmers, brush cutters and brush saws
Standard number:IEC 62841-4-4:2020   language:English and French language
Release Date:17-Nov-2020   technical committee:TC 116 - Safety of motor-operated electric tools
Drafting committee:WG 10 - TC 116/WG 10   ICS number:25.140.20 - Electric tools

IEC 62841-4-4
Edition 1.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-4: Particular requirements for lawn trimmers, lawn edge trimmers, grass
trimmers, brush cutters and brush saws

Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-4: Exigences particulières pour les taille-gazon, les coupe-bordures,
les coupe-herbes, les débroussailleuses et les débroussailleuses à lame de scie





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IEC 62841-4-4
Edition 1.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and

garden machinery – Safety –
Part 4-4: Particular requirements for lawn trimmers, lawn edge trimmers, grass

trimmers, brush cutters and brush saws

Outils électroportatifs à moteur, outils portables et machines pour jardins et

pelouses – Sécurité –
Partie 4-4: Exigences particulières pour les taille-gazon, les coupe-bordures,

les coupe-herbes, les débroussailleuses et les débroussailleuses à lame de scie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-8897-9

– 2 – IEC 62841-4-4:2020 © IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General requirements . 17
5 General conditions for the tests . 17
6 Radiation, toxicity and similar hazards . 17
7 Classification . 17
8 Marking and instructions . 18
9 Protection against access to live parts . 25
10 Starting . 25
11 Input and current . 25
12 Heating . 26
13 Resistance to heat and fire . 26
14 Moisture resistance . 27
15 Resistance to rusting . 27
16 Overload protection of transformers and associated circuits . 27
17 Endurance . 28
18 Abnormal operation . 28
19 Mechanical hazards . 31
20 Mechanical strength . 45
21 Construction . 53
22 Internal wiring . 60
23 Components . 61
24 Supply connection and external flexible cords . 62
25 Terminals for external conductors . 63
26 Provision for earthing . 64
27 Screws and connections . 64
28 Creepage distances, clearances and distances through insulation . 64
Annexes . 69
Annex I (informative) Measurement of noise and vibration emissions . 69
Annex K (normative) Battery tools and battery packs . 78
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 91
Annex AA (normative) Safety signs which may be used on machines . 96
Annex BB (normative) Thrown objects test for grass trimmers, brush cutters and brush
saws . 105
Annex CC (normative) Impact test for brush cutter and brush saw cutting accessories
and grass trimmer cutting means . 109
Annex DD (informative) Example of a material and construction fulfilling the
requirements for an artificial surface . 110

Annex EE (informative) Summary of characteristics for lawn trimmers, lawn edge
trimmers, grass trimmers, brush cutters and brush saws . 112
Bibliography . 114

Figure 101 – Example of a brush cutter . 11
Figure 102 – Example of a brush saw . 12
Figure 103 – Examples of grass trimmers . 13
Figure 104 – Example of a lawn edge trimmer . 14
Figure 105 – Example of a lawn trimmer . 15
Figure 106 – Example of a walk-behind trimmer . 16
Figure 107 – Minimum guard coverage, lawn trimmer (see 19.101.1) . 33
Figure 108 – Cross-sectional view of lawn edge trimmer cutting means guard . 35
Figure 109 – Shaft angle measurement . 36
Figure 110 – Lawn edge trimmer guarding when θ < 45° . 37
Figure 111 – Lawn edge trimmer guarding when θ ≥ 45° . 38
Figure 112 – Measurement of handle gripping length . 40
Figure 113 – Measurement of distance between handles for grass trimmers, brush

cutters and brush saws . 41
Figure 114 – Examples of brush cutters and brush saws with different handle and
barrier configurations: Measurement of distance to cutting accessory . 43
Figure 115 – Impact test apparatus for handle insulation . 48
Figure 116 – Cutting means guard drop test . 49
Figure 117 – Cutting head strength test . 50
Figure 118 – Cutting accessory guard test . 52
Figure 119 – Example of an operator presence sensor. 55
Figure 120 – Lawn trimmer and lawn edge trimmer cutting means measurement . 57
Figure 121 – Test assembly for accessibility of att
...

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