Amendment 1 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-2: Particular requirements for hedge trimmers

Amendement 1 - Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 4-2: Exigences particulières pour les taille-haies

General Information

Status
Published
Publication Date
10-May-2022
Current Stage
PPUB - Publication issued
Completion Date
11-May-2022
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IEC 62841-4-2:2017/AMD1:2022 - Amendment 1 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4-2: Particular requirements for hedge trimmers
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IEC 62841-4-2
Edition 1.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-2: Particular requirements for hedge trimmers
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-2: Exigences particulières pour les taille-haies
IEC 62841-4-2:2017-12/AMD1:2022-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62841-4-2
Edition 1.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-2: Particular requirements for hedge trimmers
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-2: Exigences particulières pour les taille-haies
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-0170-1

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 Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62841-4-2:2017/AMD1:2022
© IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS,
TRANSPORTABLE TOOLS AND LAWN
AND GARDEN MACHINERY – SAFETY –
Part 4-2: Particular requirements for hedge trimmers
AMENDMENT 1
FOREWORD

1) The Interational 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, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely 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 recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

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 document may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

Amendment 1 to IEC 62841-4-2:2017 has been prepared by IEC technical committee 116:

Safety of motor-operated electric tools.
The text of this Amendment is based on the following documents:
Draft Report on voting
116/578/FDIS 116/586/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 Amendment is English.
---------------------- Page: 4 ----------------------
IEC 62841-4-2:2017/AMD1:2022 – 3 –
© IEC 2022

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.
___________
INTRODUCTION
Add the following new Introduction:
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 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.
1 Scope
Replace the existing text of NOTE 102 with the following new text:

NOTE 102 Scissors type grass shears are covered by IEC 60335-2-94 or IEC 62841-4-5.

---------------------- Page: 5 ----------------------
– 4 – IEC 62841-4-2:2017/AMD1:2022
© IEC 2022
2 Normative references
Add the following new normative references:

IEC 60664-3:2016, Insulation coordination for equipment within low-voltage systems – Part 3:

Use of coating, potting or moulding for protection against pollution

IEC 60664-4:2005, Insulation coordination for equipment within low-voltage systems – Part 4:

Consideration of high-frequency voltage stress
3 Terms and definitions
Replace the existing text of 3.111 with the following new text:
3.111
maximum speed

highest steady-state cutting device 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 cutting device speed excludes transients such as overshoot that may occur

before attaining a steady-state condition.
5 General conditions for the tests
Add the following new subclause:

5.103 For machines that do not attain maximum speed under no load conditions, the

manufacturer shall provide samples with special hardware and/or software in order to perform

the required tests.
8 Marking and instructions
8.2 Replace the first three dashes with the following:

– "Wear ear protection", a relevant safety sign of ISO 7010 or the safety sign specified in

Figure AA.7. This marking may be omitted if the measured emission sound pressure level

at the operator’s ear in accordance with Annex I does not exceed 85 dB(A); and

– " DANGER – Keep hands away from blade" or the safety sign specified in Figure AA.1 or

the safety sign specified in Figure AA.2.
Replace the fourth to seventh dashes with the following:

– " WARNING – Do not expose to rain" or the safety sign specified in Figure AA.3.

– " WARNING – Remove plug from the mains immediately if the cable is damaged or cut"

or the safety sign specified in Figure AA.4.
Replace the ninth dash with the following:

– " DANGER – Keep sufficient distance away from electrical power lines" or symbol C.2.30

of ISO 11684;
---------------------- Page: 6 ----------------------
IEC 62841-4-2:2017/AMD1:2022 – 5 –
© IEC 2022
Add the following new subclause:
8.14.1.1 Addition to item 2) c):

For machines classified at least IPX4, the warning may be replaced as specified below.

c) Do not operate the machine in rain or wet conditions. Water entering the machine may

increase the risk of electric shock or malfunction that could result in personal injury.

Replace the existing text of 8.14.1.101 with the following new text:
8.14.1.101 Safety instructions for hedge trimmers

For Category 1 hedge trimmers that can be converted to a grass shear, the term "hedge

trimmer" may be replaced by alternate wording (e.g. "grass shear/hedge trimmer" or "grass

shear/shrub shear"). For this case, the verbatim warnings below need not be repeated for the

two configurations.
Hedge trimmer safety warnings:

a) Do not use the hedge trimmer in bad weather conditions, especially when there is a

risk of lightning. This decreases the risk of being struck by lightning.

b) Keep all power cords and cables away from cutting area. Power cords or cables may be

hidden in hedges or bushes and can be accidentally cut by the blade.

c) Wear ear protection. Adequate protective equipment will reduce the risk of hearing loss.

NOTE 101 This warning can be omitted if the measured emission sound pressure level at the operator’s ear in

accordance with Annex I does not exceed 85 dB(A).

d) Hold the hedge trimmer by insulated gripping surfaces only, because the blade may

contact hidden wiring or its own cord. Blades contacting a "live" wire may make exposed

metal parts of the hedge trimmer "live" and could give the operator an electric shock.

e) Keep all parts of the body away from the blade. Do not remove cut material or hold

material to be cut when blades are moving. Blades continue to move after the switch is

turned off. A moment of inattention while operating the hedge trimmer may result in serious

personal injury.

f) When clearing jammed material or servicing the hedge trimmer, make sure all power

switches are off and the power cord is disconnected. Unexpected actuation of the hedge

trimmer while clearing jammed material or servicing may result in serious personal injury.

g) Carry the hedge trimmer by the handle with the blade stopped and taking care not to

operate any power switch. Proper carrying of the hedge trimmer will decrease the risk of

inadvertent starting and resultant personal injury from the blades.

h) When transporting or storing the hedge trimmer, always use the blade cover. Proper

handling of the hedge trimmer will decrease the risk of personal injury from the blades.

Replace the existing text of 8.14.1.102 with the following new text:
8.14.1.102 Additional safety instructions for extended-reach hedge trimmers
Extended-reach hedge trimmer safety warnings:
a) Always use head protection when operating the extended-reach hedge trimmer
overhead. Falling debris can result in serious personal injury.

NOTE 101 Alternate wording for "extended-reach" is possible, e.g. "pole" or "long reach".

b) Always use two hands when operating the extended-reach hedge trimmer. Hold the

extended-reach hedge trimmer with both hands to avoid loss of control.
---------------------- Page: 7 ----------------------
– 6 – IEC 62841-4-2:2017/AMD1:2022
© IEC 2022

c) To reduce the risk of electrocution, never use the extended-reach hedge trimmer near

any electrical power lines. Contact with or use near power lines may cause serious injury

or electric shock resulting in death.
8.14.2 Add the following new text after the existing text of 8.14.2 c):
Replacement of the NOTE:
NOTE In Europe (EN IEC 62841-4-2), the following additional requirements apply:
Emissions
1) The noise emission, measured in accordance with Clause I.2, as follows:

– A-weighted emission sound pressure level L and its uncertainty K , where L exceeds 70 dB(A).

pA pA pA
Where L does not exceed 70 dB(A), this fact shall be indicated;
– the A-weighted measured and guaranteed sound power levels L ;
2) Recommendation for the operator to wear hearing protection.

3) The vibration total value and its uncertainty measured in accordance with Clause I.3. When the vibration

2 2

total value does not exceed 2,5 m/s , this shall be stated. When the vibration total value exceeds 2,5 m/s ,

its value shall be given in the instructions.
4) The following information:

– that the declared vibration total value(s) and the declared noise emission value(s) has been measured

in accordance with a standard test method and may be used for comparing one machine with another;

– that the declared vibration total value(s) and the declared noise emission value(s) may also be used in

a preliminary assessment of exposure.
5) A warning:

– that the vibration during actual use of the machine can differ from the declared total value depending

on the ways in which the machine is used; and

– of the need to identify safety measures to protect the operator that are based on an estimation of

exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the

times when the machine is switched off and when it is running idle in addition to the trigger time).

14 Moisture resistance
Replace the existing text of 14.2.1 with the following new text:
14.2.1 Replacement:
The machine is not connected to the supply.

The machine is placed in its normal rest position on a perforated turntable. The turntable is then

turned continuously at (1 ± 0,1) r /min during the test.

Detachable parts are removed and subjected, if necessary, to the relevant treatment with the

main part. Movable covers that are non-detachable parts and are not self-restoring are placed

in the most unfavourable position.

NOTE Examples of self-restoring covers include those that are spring loaded or close by gravity.

Replace the existing text of 14.2.2 with the following new text:
14.2.2 Add the following new text:
Replacement of the last paragraph:

Immediately after the appropriate treatment, the machine shall withstand the electric strength

test of Annex D between live parts and accessible parts, the test voltage being 2 500 V. Then

the machine is connected to the supply. It shall not start with the power switch in the "off" position.

---------------------- Page: 8 ----------------------
IEC 62841-4-2:2017/AMD1:2022 – 7 –
© IEC 2022

Afterwards, inspection shall show that there is no trace of water on insulation which could result

in a reduction of creepage distances between bare conductors of different potential below the

values specified in 28.1. For all instances where creepage distances could be reduced below

the values specified in 28.1, a short circuit is introduced between adjacent conductors. The

machine is then evaluated for
– the risk of fire in accordance with item a) of 18.6.1; and
– the loss of any SCF, unless the machine is rendered into a safe state.
17 Endurance
17.2 Add the following new paragraph:

Care shall be taken to avoid overheating the cutting device by operating continuously and

therefore appropriate interruptions for cooling and lubrication may be introduced.

19 Mechanical hazards
Replace the existing text of 19.1 with the following new text:
19.1 Replacement of the first paragraph:

All power-driven hazardous parts (e.g. gears), other than those moving parts (e.g. cutting

device), barriers and covers which are separately covered by 19.102, 19.103, 19.105 and

19.106, shall be so positioned or enclosed to provide adequate protection. The requirements of

this subclause apply to all operating configurations as described in 8.14.2.

Replace the existing text of the third paragraph of 19.101.1.1 with the following new text:

The handles shall be designed in such a way that each one can be grasped with one hand.

Handles shall be suitably shaped to be grasped securely and have a perimeter P between

63 mm and 170 mm as illustrated in Figure 105 a), 105 b) or 105 c). The perimeter is

determined by a chain measurement with the blade control, if any, fully depressed. The

gripping length of the handle(s) required in Table 101 shall be at least 100 mm.

Replace the existing text of the first paragraph of 19.101.1.2 with the following new text:

On bail or closed handles (U-shaped handles) the gripping length is related to the inner length

of the gripping surface. There shall be a minimum radial clearance of 25 mm around the gripping

length. In addition, for a handle incorporating a blade control, there shall be a minimum radial

clearance of 25 mm around the blade control actuator with the blade control not depressed.

Add, after the first paragraph of 19.101.1.3, the following new paragraph:

In addition, for a handle incorporating a blade control, there shall be a minimum radial

clearance of 25 mm around the blade control actuator with the blade control not depressed.

Replace the existing text of the fourth paragraph of 19.101.2.1 with the following new text:

The handles shall be designed in such a way that each one can be grasped with one hand.

Handles shall be suitably shaped to be grasped securely and have a perimeter P between

63 mm and 170 mm as illustrated in Figure 105 a), 105 b) or 105 c). The perimeter P is

determined by a chain measurement with the blade control, if any, fully depressed. The

gripping length of the front handle and the rear handle shall be at least 100 mm long. In

addition, for a handle incorporating a blade control, there shall be a minimum radial clearance

of 25 mm around the blade control actuator with the blade control not depressed.
---------------------- Page: 9 ----------------------
– 8 – IEC 62841-4-2:2017/AMD1:2022
© IEC 2022

Replace the existing text of the first paragraph of 19.101.2.2 with the following new text:

On bail or closed handles (U-shaped handles), the gripping length is related to the inner length

of the gripping surface. There shall be a minimum radial clearance of 25 mm around the gripping

length. In addition, for a handle incorporating a blade control, there shall be a minimum radial

clearance of 25 mm around the blade control actuator with the blade control not depressed.

Add, after the first paragraph of 19.101.2.3, the following new paragraph:

In addition, for a handle incorporating a blade control, there shall be a minimum radial

clearance of 25 mm around the blade control actuator with the blade control not depressed.

19.101.3.2 Replace the first paragraph with the following:

Any adjustable handle shall have a defined centre position. The handle shall have a locking

detent at the centre position and at any other intended handle adjustment position of operation

as described in 8.14.2. These other operating positions shall not locate the handle further than

95° from the centre position about their axis of rotation. See Figures 106 and 107. The handle

movement, when locked by the detent and subjected to a torque of (2 ± 0,1) Nm, shall be limited

to 5° rotation. The handle shall have a handle release control as required in 19.101.3.3 that

releases the handle from the detent position.
19.102.2.1 Replace the existing text with the following:

The front handle shall be located so that the distance from the nearest cutting edge of the

cutter blade to the furthest side of any handle, except for Category 1, is not less than 120 mm

as shown in Figure 108 a) and Figure 108 b).

For Category 1, the shortest distance between the front of the handle grip and the nearest blade

tooth shall be at least 120 mm (see Figure 111). The distances shall be measured along the

shortest path from the front of the handle grip to the nearest cutting edge of the cutter blade.

For all categories in Table 101, if there is a front hand barrier, then the x and x distances in

1 2

Figure 108 a) and Figure 108 b) shall be measured along the shortest path from the furthest

side of the handle, via the edge of the front hand barrier, to the nearest cutting edge of the

cutter blade. The front hand barrier shall not have any openings with a minor dimension larger

than 10 mm.

Additionally, for category 3a hedge trimmers, the front hand barrier shall have a minimum

shape described by:
– a height y of 90 mm measured perpendicularly from the cutting plane; and
– a width y of 50 mm on either side of the centreline of the cutting device.

Both the y and y measurements are made with the cutting device in the 0˚ position, if axially

1 2
rotatable. See Figure 109.
Compliance is checked by inspection and by measurement.
19.103.2.4 Hedge trimmer category 4 (see Figure 116)
Add the following new paragraph before the compliance paragraph

Blunt extensions are not required for category 4 hedge trimmers with a blade configuration

where there are only two handles and the front handle is a stick-type handle that is permanently

fixed to the smooth side of a single sided cutting device (see Figure 104 b)).
---------------------- Page: 10 ----------------------
IEC 62841-4-2:2017/AMD1:2022 – 9 –
© IEC 2022

19.103.3.4 Replace the existing text of the first paragraph with the following new text:

An adjustable cutting device shall be provided with a momentary cutting device release

control to disengage the cutting device from a locked position. A handle in accordance with

8.14.2 b) 108) shall be provided for adjusting the position of the cutting device such that

contact with the cutting device is not required. The requirements of 21.30 shall not apply to

the cutting device adjusting handle.

19.103.3.6 Replace the existing text of the third paragraph with the following new text:

The cutting device release control is actuated in accordance with 8.14.2 b) 108) a total of

2 000 times, engaging all locking detent positions over the full range of travel of the adjustable

cutting device, in both directions.

19.104.2 Replace the existing text of the first paragraph with the following new text:

The hedge trimmer shall be mounted and instrumented in such a manner that the results of

the test are not affected.
20 Mechanical strength

Replace the existing text of the fourth paragraph of 20.3.1 with the following new text:

Each drop shall be conducted on a separate sample, unless a single sample can be subjected

to multiple drops without failure. If a sample has been subjected to multiple drops and fails,

then the drop in the orientation that resulted in the failure is repeated using a new sample. If

the new sample passes the test for the drop in that orientation, then the requirements for the

drop in that orientation are considered to be fulfilled. The test is continued in this manner until

all drops in each of the four orientations are completed.
20.101.3.3 Replace the first two dashes with the following:

– temporarily deflect more than an additional 15 % of the length measured from the point of

the power switch closest to the cutter blade and the nearest cutting edge of the cutter

blade while a force of 50 N is applied to a part of the cutter blade nearest to the front

handle, with the additional deflection being measured at the point of each applied force;

– permanently be
...

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