IEC 62841-4-5:2021

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

Name:IEC 62841-4-5:2021   Standard name:Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-5: Particular requirements for grass shears
Standard number:IEC 62841-4-5:2021   language:English language
Release Date:23-Aug-2021   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 62841-4-5
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





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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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommen
...

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