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IEC 62841-4-3
Edition 1.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-3: Particular requirements for pedestrian controlled walk-behind
lawnmowers
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-3: Exigences particulières pour tondeuses à gazon à conducteur à pied
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IEC 62841-4-3
Edition 1.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-3: Particular requirements for pedestrian controlled walk-behind
lawnmowers
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-3: Exigences particulières pour tondeuses à gazon à conducteur à pied
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 65.060.70 ISBN 978-2-8322-8896-2
– 2 – IEC 62841-4-3:2020 © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 9
4 General requirements . 11
5 General conditions for the tests . 11
6 Radiation, toxicity and similar hazards . 11
7 Classification . 12
8 Marking and instructions . 12
9 Protection against access to live parts . 16
10 Starting . 16
11 Input and current . 16
12 Heating . 16
13 Resistance to heat and fire . 17
14 Moisture resistance . 17
15 Resistance to rusting . 18
16 Overload protection of transformers and associated circuits . 18
17 Endurance . 18
18 Abnormal operation . 19
19 Mechanical hazards . 20
20 Mechanical strength . 39
21 Construction . 41
22 Internal wiring . 46
23 Components . 46
24 Supply connection and external flexible cords . 48
25 Terminals for external conductors . 50
26 Provision for earthing . 50
27 Screws and connections . 50
28 Creepage distances, clearances and distances through insulation . 50
Annexes . 55
Annex I (informative) Measurement of noise and vibration emissions . 55
Annex K (normative) Battery tools and battery packs . 64
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 80
Annex AA (normative) Safety signs . 86
Annex BB (normative) Test enclosure . 92
Annex CC (normative) Rotary lawnmower foot protection test . 101
Annex DD (normative) Lawnmower cutting means stopping time test . 110
Annex EE (informative) Example of a material and construction for fulfilling the
requirements for an artificial surface . 112
Bibliography . 114
Figure 101 – Operator control zones . 24
Figure 102 – Handle distance and rear cutting means enclosure for rotary lawnmowers . 27
Figure 103 – Example of design for rotary lawnmower front opening . 28
Figure 104 – Examples of front opening allowance for rotary lawnmowers . 29
Figure 105 – Obstruction test . 35
Figure 106 – Guarding of cylinder lawnmower cutting means, general . 37
Figure 107 – Guarding of cylinder lawnmower cutting means, side coverage . 37
Figure 108 – Guarding of cylinder lawnmower cutting means, free and rear discharge . 38
Figure 109 – Guarding of cylinder lawnmower cutting means, front discharge . 38
Figure 110 – Cylinder lawnmower throw line and handle distance . 39
Figure 111 – Impact test fixture for handle insulation . 42
Figure 112 – Lawnmower cutting means measurement . 46
Figure 113 – Test assembly for accessibility of attachment plug blades . 49
Figure I.101 – Microphone positions on the hemisphere (see Table I.101) . 56
Figure I.102 – Examples of positions of transducers for lawnmowers . 62
Figure K.301 – Examples of separable battery pack connection points and direction of
applied force . 74
Figure AA.1 – Safety signs illustrating – "WARNING – Beware of thrown objects – keep
bystanders away" . 86
Figure AA.2 – Safety signs illustrating – "WARNING – Remove plug from mains before
maintenance or if cord is damaged" . 87
Figure AA.3 – Safety sign illustrating – "WARNING – Keep the supply cord away from
the blades” . 87
Figure AA.4 – Safety signs illustrating – "WARNING – Keep hands and feet away from
the blades" . 88
Figure AA.5 – Safety signs illustrating – "WARNING – Disconnect battery before
maintenance" . 89
Figure AA.6 – Safety signs illustrating – "WARNING – Remove the disabling device
before maintenance" . 90
Figure AA.7 – Safety s
...