IEC 63241-1:2023
(Main)Electric motor-operated tools - Dust measurement procedure - Part 1: General requirements
Electric motor-operated tools - Dust measurement procedure - Part 1: General requirements
IEC 63241-1:2023 specifies general requirements for the dust measurement of electric motor-operated tools supplied from mains or from batteries. This document applies to those tools with and without a dust extraction unit where dust such as mineral dust containing silica or wood dust is expected.
Outils électroportatifs à moteur - Procédure de mesure de la poussière - Partie 1 : Exigences générales
IEC 63241-1:2023 spécifie les exigences générales pour le mesurage des poussières des outils à moteur électrique alimentés par secteur ou par batteries. Le présent document s'applique aux outils avec et sans unité de dépoussiérage où des poussières telles que des poussières minérales contenant de la silice ou de la poussière de bois sont attendues.
General Information
Standards Content (Sample)
IEC 63241-1
®
Edition 1.0 2023-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated tools – Dust measurement procedure –
Part 1: General requirements
Outils électroportatifs à moteur – Procédure de mesure de la poussière –
Partie 1: Exigences générales
IEC 63241-1:2023-07(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2023 IEC, Geneva, Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Recherche de publications IEC - Découvrez notre puissant moteur de recherche et consultez
webstore.iec.ch/advsearchform gratuitement tous les aperçus des publications. Avec un
La recherche avancée permet de trouver des publications IEC abonnement, vous aurez toujours accès à un contenu à jour
en utilisant différents critères (numéro de référence, texte, adapté à vos besoins.
comité d’études, …). Elle donne aussi des informations sur les
projets et les publications remplacées ou retirées. Electropedia - www.electropedia.org
Le premier dictionnaire d'électrotechnologie en ligne au monde,
IEC Just Published - webstore.iec.ch/justpublished
avec plus de 22 300 articles terminologiques en anglais et en
Restez informé sur les nouvelles publications IEC. Just
français, ainsi que les termes équivalents dans 19 langues
Published détaille les nouvelles publications parues.
additionnelles. Egalement appelé Vocabulaire
Disponible en ligne et une fois par mois par email.
Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC Products & Services Portal - products.iec.ch
---------------------- Page: 2 ----------------------
IEC 63241-1
®
Edition 1.0 2023-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated tools – Dust measurement procedure –
Part 1: General requirements
Outils électroportatifs à moteur – Procédure de mesure de la poussière –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.30 ISBN 978-2-8322-7090-5
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 63241-1:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test procedure . 8
4.1 General . 8
4.2 Test room and equipment . 8
4.3 Operating conditions . 9
4.4 Acceptance criteria . 11
5 Instrumentation . 11
5.1 Instrumentation for measuring operating conditions . 11
5.2 Instrumentation for measuring climatic conditions . 11
6 Information to be reported . 12
Figure 1 – Positions of dust samplers and workpiece for the measurement of only one
dust fraction . 13
Figure 2 – Positions of dust samplers and workpiece for the measurement of two dust
fractions . 14
---------------------- Page: 4 ----------------------
IEC 63241-1:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED TOOLS –
DUST MEASUREMENT PROCEDURE –
Part 1: General requirements
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, 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 IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 63241-1 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
116/655/FDIS 116/666/RVD
Full information on the voting for the approval of this International Standard 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.
This document is to be used in conjunction with the appropriate parts of IEC 63241-2 or
IEC 63241-3, which contain clauses that supplement or modify the corresponding clauses in
this document to provide the relevant requirements for each type of product.
---------------------- Page: 5 ----------------------
– 4 – IEC 63241-1:2023 © IEC 2023
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.
A list of all parts of the IEC 63241 series, under the general title: Electric motor-operated tools –
Dust measurement procedure, 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: 6 ----------------------
IEC 63241-1:2023 © IEC 2023 – 5 –
INTRODUCTION
Inhalable dust emitted by electric motor-operated tools can present a hazard to the operator
and other exposed persons.
Therefore, this document specifies a procedure to measure the dust concentration produced
by an electric power tool under standardized conditions representing typical applications.
However, the dust concentration during actual use of the power tool can differ from the dust
concentration measured in accordance with this document depending on the ways in which the
tool is used.
The results of dust measurements can be used
– for a declaration of the dust emission;
– for comparing the dust emission from tools of the same type; or
– in a preliminary assessment of dust exposure at a workplace.
For all purposes, it is important to specify measurement procedures with known accuracy so
that the results of measurements taken by different laboratories can be compared.
The measurements of dust concentration are made in accordance with EN 1093-9:1998 and
EN 1093-9:1998/A1:2008 for the test room.
---------------------- Page: 7 ----------------------
– 6 – IEC 63241-1:2023 © IEC 2023
ELECTRIC MOTOR-OPERATED TOOLS –
DUST MEASUREMENT PROCEDURE –
Part 1: General requirements
1 Scope
This document specifies general requirements for the dust measurement of electric motor-
operated tools supplied from mains or from batteries. This document applies to those tools with
and without a dust extraction unit where dust such as mineral dust containing silica or wood
dust is expected.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
EN 1093-9:1998, Safety of machinery – Evaluation of the emission of airborne hazardous
substances – Part 9: Pollutant concentration parameter, room method
EN 1093-9:1998/A1:2008
EN 13205 (all parts), Workplace exposure – Assessment of sampler performance for
measurement of airborne particle concentrations
ISO 7708:1995, Air quality – Particle size fraction definitions for health-related sampling
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
accessory
device that is attached only to the output mechanism of the tool
3.2
detachable battery pack
battery which is contained in a separate enclosure from the battery tool and is intended to be
removed from the tool for charging purposes
3.3
dust
distribution of solid materials in gases, generated by mechanical processes
Note 1 to entry: According to ISO 7708:1995, two size categories are to be differentiated: the inhalable dust and
the respirable dust fraction.
---------------------- Page: 8 ----------------------
IEC 63241-1:2023 © IEC 2023 – 7 –
3.4
dust extraction unit
suction device, connected to the dust/chip outlet of the tool or a dust capturing attachment, for
collecting dust emitted from the tool during working
Note 1 to entry: A dust extraction unit can be either an external one (such as a dust extractor or a centralized
exhaust system) or an integral one.
3.5
dust sampler
device for collecting the respirable dust portion and inhalable dust portion by aspirating a
measured amount of dust-laden air and deposition of the dust on an integrated filter
3.6
fully charged battery
battery charged to the maximum state of charge permitted by the battery charging system
intended for use with the tool
3.7
inhalable dust
dust fraction which can be taken up by the respiratory system in accordance with
ISO 7708:1995
3.8
maximum air flow rate
highest air flow rate created by an external dust extraction unit, including the specified hose,
with no tool attached
3.9
maximum vacuum
highest vacuum level created by an external dust extraction unit, including the specified hose
with the end of the hose blocked and with no bypass
3.10
quartz
mineral derived from crystalline silica
3.11
rated frequency
frequency assigned to the tool by the manufacturer
3.12
rated frequency range
frequency range assigned to the tool by the manufacturer
Note 1 to entry: It is expressed by its lower and upper limits.
3.13
rated voltage
voltage assigned to the tool by the manufacturer
Note 1 to entry: For three-phase supply, it is the voltage between phases.
3.14
rated voltage range
voltage range assigned to the tools by the manufacturer
Note 1 to entry: It is expressed by its lower and upper limits.
---------------------- Page: 9 ----------------------
– 8 – IEC 63241-1:2023 © IEC 2023
3.15
respirable dust
dust fraction which can reach the alveoli and bronchia in accordance with ISO 7708:1995
3.16
separable battery pack
battery which is contained in a separate enclosure from the battery tool and is connected to the
battery tool by a cord
4 Test procedure
4.1 General
Tests shall be performed under working conditions, including appropriate rest periods, in a test
room similar to the one used in EN 1093-9:1998 and EN 1093-9:1998/A1:2008, and
measurements of dust emission shall be made in accordance with EN 1093-9:1998 and
EN 1093-9:1998/A1:2008.
The inhalable dust shall be measured and analysed. For tools intended to be used with
materials likely to contain quartz, also the respirable dust shall be measured and analysed.
The operator shall be skilled and able to operate the machine properly, i.e. the operator shall
be experienced in the use of the tool.
NOTE Practical tests have shown that the variation of the results can be reduced
– when the distance between the work surface and the operator is kept constant,
– when the posture changes of the operator are minimized, and
– when the posture of the operator is close to real working conditions during the test.
4.2 Test room and equipment
The tests are carried out in a test room that fulfils the following criteria:
– no other sources of fixed air-polluting material in the room;
– no room ventilation during the dust measurement;
3
– size of the room (200 ± 20) m with a height between 3,0 m and 4,5 m;
– large enough to ensure a distance between the tool and the walls of at least 2,0 m;
NOTE 1 A smaller distance can lead to higher values of the measured dust concentration.
NOTE 2 The dimensions of the test room to measure dust concentration are in accordance with
EN 1093-9:1998 and EN 1093-9:1998/A1:2008. This test room size has been shown to provide consistent dust
concentration measurement results and also results in measured dust concentrations that are in the upper
quartile of typical workplace applications.
– apart from the equipment required for the test, the test room is as empty as possible, so
3
that the 200 m requirement is not compromised and no unnecessary surfaces are created.
During the test, dust samplers are carried by the operator on the upper chest zone. If the
inhalable dust or the respirable dust is measured, one dust sampler shall be used on each
side of the upper chest zone, see Figure 1. In case that during the measurement of the
respirable dust also the inhalable dust fraction shall be evaluated, an additional dust sampler
for the inhalable dust shall be used and placed as close as possible below one of the other
two dust samplers for respirable dust, see Figure 2. If the tests are done by robotic means,
the dust sampler(s) shall be placed at a place to replicate the upper chest zone of an operator.
The dust sampler(s) shall remain working throughout the entire time of each test as defined
in 4.3.
---------------------- Page: 10 ----------------------
IEC 63241-1:2023 © IEC 2023 – 9 –
For those tools where the workpiece is placed on a bench, as specified in the relevant part of
IEC 63241-2 or IEC 63241-3, the vertical distance between the upper surface of the workpiece
and the intake openings of the dust samplers carried by the standing operator on the upper
chest zone shall be h = (600 ± 50) mm, see Figure 1 and Figure 2. The distance is to be
established and measured before the tests are started.
NOTE 3 The required vertical distance is influenced by the height of the operator (e.g. use of a support for the
operator), height of the table, thickness of the workpiece and the position of the dust samplers on the operator.
The dust samplers shall comply with EN 13205 (all parts) and shall be suitable for the
determination of the concentration of inhalable dust and, if required, of respirable dust, as
specified in ISO 7708:1995. The material of the filters used in the dust samplers shall be of
cellulose nitrate with a mesh size of 8 µm. Alternatively, the material for filters for inhalable
dust may be glass fibre grade 85/90.
NOTE 4 Glass fibre filters can help to ensure the necessary volume flow since their flow resistance is lower than
that of cellulose nitrate filters.”
The test room, the air inside the test room and the equipment shall be cleaned before each test,
so that previous tests have no influence on the test result.
NOTE 5 Whether the air in the test room is clean, typically can be monitored by using an appropriate optical dust
monitor (e.g. a laser particle counter).
4.3 Operating conditions
During the tests, the ambient temperature shall be 15 °C to 30 °C and the relative ambient
humidity shall be a maximum of 75 %.
For tools to be used in combination with an external dust extraction unit, the tool is connected
to the dust extraction unit as specified by the manufacturer. If possible, the position of the
tool, the operator, or both shall be arranged so that the cooling air outlet is not directed towards
the dust samplers.
NOTE 1 The cooling air outlet of the tool can have an influence on the result if directed towards the dust samplers.
Every test consists of five test cycles of 10 min working time and 2 min rest time each, for a
total test time of 1 h. For battery-operated tools that are not able to operate for 10 min working
time, the test may be split into 10 test cycles of 5 min working time and 1 min rest time. Every
1 h test shall start with an empty dust extraction unit equipped with a new filter. During each
test, a given task shall be achieved as specified in the relevant part of IEC 63241-2 or
IEC 63241-3. Depending on the detection limit of the used dust sampler(s) and of the dust
concentration to be determined, a total test time longer than 1 h may be necessary. This shall
be achieved by adding a sufficient number of additional test cycles, so that the relative detection
limit of the dust sampler(s) is lower than the dust concentration to be determined. The task
specified in the relevant part of IEC 63241-2 or IEC 63241-3 shall be adapted to the altered test
time.
The dust extraction unit shall be maintained (e.g. filter cleaning) and operated as specified by
the manufacturer’s instruction manual, and it shall be placed in the test room.
Emptying of an external dust extraction unit shall be done in accordance with the instruction
manual of the external dust extraction unit, but at the earliest after three test cycles. Any
emptying shall be done during a rest period of a test cycle and outside the test room.
NOTE 2 Examples of instructions in a manual are requests to obey the warning signal of a class M dust extraction
unit or to keep the air flow in a certain range.
NOTE 3 Emptying after three test cycles is understood as the earliest opportunity for emptying, but not as a regular
action at that point of time.
---------------------- Page: 11 ----------------------
– 10 – IEC 63241-1:2023 © IEC 2023
Integral dust extraction units are changed or emptied in accordance with the instruction
manual. This may be done at shorter intervals. If necessary, the test may be split into 10 test
cycles of 5 min working time and 1 min rest time. Changing or emptying of the dust container
shall be done inside of the test room.
It shall be ensured that
– the exhaust air of an external dust extraction unit is not directed towards the dust
samplers; and
– the dust extraction unit is not moved more than the work process requires during the test.
If the instruction manual of the power tool requires a certain air flow rate or an air flow rate
range, then this air flow rate or the minimum value of an air flow rate range shall be adjusted
for the dust measurement within a tolerance of 0 % to 10 %.
The tool shall be operated under working conditions. The material used for the test shall be
appropriate for the intended use of the tool. The tool bit, cutter, abrasive, etc. to be used shall
be as specified by the manufacturer for the material to be worked.
Tools for a.c. only are tested with a.c. at rated frequency, if marked, and those for a.c. or d.c.
are tested with the supply that results in the highest tool output speed that does not exceed the
recommended speed of the accessory in accordance with the manufacturer’s instructions.
Tools for a.c. which are not marked with rated frequency, or marked with a rated frequency
range of 50 Hz to 60 Hz or with 50/60 Hz, are tested with either 50 Hz or 60 Hz, whichever
results in the highest tool output speed that does not exceed the recommended speed of the
accessory in accordance with the manufacturer’s instructions.
Tools are tested at rated voltage. Tools having more than one rated voltage or having a rated
voltage range are tested at the voltage that results in the highest tool output speed that does
not exceed the recommended speed of the accessory in accordance with the manufacturer’s
instructions.
All test parameter settings shall be made with a tolerance of ±2 %.
NOTE 4 Examples of test parameter settings include voltage, current and time period.
The tool and the workpiece shall be placed inside the test room so that the distance between
the tool and the walls and between the tool and the ceiling is at least 2,0 m.
Three tests shall be carried out by one operator. The result shall be one concentration value
for each test and dust type. The mean value of the two dust samplers for the same fraction at
the operator shall be taken. The dust sampler(s) shall operate during the entire time needed
for each of the three tests. The operating conditions are kept stable throughout the test.
For battery-operated tools:
Prior to the test, all batteries shall be fully conditioned as follows: batteries shall be fully
discharged and then charged in accordance with the manufacturer’s instructions. The sequence
shall be repeated one more time with an interval of at least 2 h after each discharge.
The end-of-discharge voltages for common cell chemistries are as follows:
– 0,9 V/cell for nickel cadmium or nickel metal-hydride batteries;
– 1,75 V/cell for lead-acid batteries;
– 2,5 V/cell for lithium-ion batteries, unless the manufacturer specifies a different voltage.
---------------------- Page: 12 ----------------------
IEC 63241-1:2023 © IEC 2023 – 11 –
After removal from the charging system and before starting a test, the fully charged battery
shall rest for at least 2 h but no more than 6 h at an ambient temperature of (20 ± 5) °C.
Each operator shall start each test cycle of 10 min or 5 min working time, as applicable, with a
fully cha
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.