IEC 62841-1:2014

IEC 62841-1 ®
Edition 1.1 2025-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 1: General requirements
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IEC 62841-1 ®
Edition 1.1 2025-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.140.20 ISBN 978-2-8327-0303-8
REDLINE VERSION – 2 – IEC 62841-1:2014+AMD1:2025 CSV
© IEC 2025
CONTENTS
FOREWORD . 5
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 15
4 General requirements . 22
5 General conditions for the tests . 22
6 Radiation, toxicity and similar hazards . 24
7 Classification . 25
8 Marking and instructions . 26
9 Protection against access to live parts . 38
10 Starting . 39
11 Input and current . 40
12 Heating . 40
13 Resistance to heat and fire . 45
14 Moisture resistance . 46
15 Resistance to rusting . 49
16 Overload protection of transformers and associated circuits . 50
17 Endurance . 50
18 Abnormal operation . 51
19 Mechanical hazards . 59
20 Mechanical strength . 61
21 Construction . 63
22 Internal wiring . 74
23 Components . 76
24 Supply connection and external flexible cords . 81
25 Terminals for external conductors . 86
26 Provision for earthing . 88
27 Screws and connections . 91
28 Creepage distances, clearances and distances through insulation . 93
Annex A (normative) Measurement of creepage distances and clearances . 101
Annex B (normative) Motors not isolated from the supply mains and having basic
insulation not designed for the rated voltage of the tool . 106
Annex C (normative) Leakage current . 108
Annex D (normative) Electric strength . 112
Annex E (informative) Methods of applying ISO 13849-1 to power tools . 114
Annex F (informative) Rules for routine tests . 116
Annex G (informative) Void Determination of applicable requirements for tools
covered by Annex K . 118
Annex H (normative) Determination of a low-power circuit . 122
Annex I (informative) Measurement of noise and vibration emissions . 123
Annex J Void . 138

© IEC 2025
Annex K (normative) Battery tools and battery packs . 139
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources. 158
Annex M (normative) Remote communication through public networks. 177
Annex N (informative) Methods to estimate the average probability of dangerous
failure per hour caused by remote communication through public networks . 181
Bibliography . 185

Figure 1 – Test fingernail . 98
Figure 2 – Flexing test apparatus . 99
Figure 3 – Overload test of a class II armature . 100
Figure A.1 – Clearance gap for parallel sided and V-shaped groove . 102
Figure A.2 – Clearance gap for rib and uncemented joint with groove . 103
Figure A.3 – Clearance gap for uncemented joint and diverging-sided groove . 104
Figure A.4 – Clearance gap between wall and screw . 105
Figure B.1 – Simulation of fault conditions . 107
Figure C.1 – Diagram for leakage current measurement for single-phase connection
and three-phase tools suitable for single-phase supply . 110
Figure C.2 – Diagram for leakage current measurement for three-phase connection . 111
Figure C.3 – Circuit of the leakage current meter . 111
Figure G.1 – Determination of applicable requirements for tools covered by Annex K . 121
Figure H.1 – Example of an electronic circuit with low-power points . 122
Figure I.1 – Test bench . 136
Figure I.2 – Positions of a hand-held power tool and microphones for the
hemispherical / cylindrical measurement surface . 136
Figure I.3 – Microphone positions on a cubic measurement surface . 137
Figure I.4 – Directions of vibration measurement . 137
Figure K.1 – Measurement of clearances . 157
Figure L.1 – Measurement of clearances . 176
Figure N.1 – Flow of information for a remotely communicated software update. 182
Figure N.2 – Flow of information for a power tool with a wireless connection between
power switch and control unit . 183

Table 1 – Maximum normal temperature rises (1 of 2) . 43
Table 2 – Maximum outside surface temperature rises . 45
Table 3 – Maximum winding temperature . 52
Table 4 – Required performance levels . 58
Table 5 – Impact energies. 61
Table 6 – Test torques . 62
Table 7 – Switch trigger force . 67
Table 8 – Minimum cross-sectional area and AWG sizes of supply cords . 82
Table 9 – Pull and torque value . 84
Table 10 – Quick-connect terminals for earthing conductors . 89
Table 11 – Torque for testing screws and nuts . 92
Table 12 – Minimum creepage distances and clearances . 95

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Table D.1 – Test voltages . 113
Table F.1 – Test voltages for the electric strength test . 117
Table K.1 – Minimum creepage distances and clearances between parts of opposite
polarity . 156
Table L.1 – Minimum creepage distances and clearances between parts of opposite
polarity . 175
Table M.1 – Transmission errors and examples of acceptable measures . 178

© IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
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,
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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
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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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s),
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
https://patents.iec.ch. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 62841-1 edition 1.1 contains the first edition (2014-03) [documents 116/156/FDIS and
116/163/RVD], its corrigenda 1 (2014-05) and 2 (2025-10), and its amendment 1 (2025-
03) [documents 72/1017/FDIS and 72/1026/RVD].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
REDLINE VERSION – 6 – IEC 62841-1:2014+AMD1:2025 CSV
© IEC 2025
International Standard IEC 62841-1 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
This standard is scheduled to cancel and replace the fourth edition of IEC 60745-1, published
in 2006, the first edition of IEC 61029-1, published in 1990, and the fifth edition of IEC 60335-
1, published in 2010, only with respect to requirements concerning lawn and garden
machinery. The latter publications remain valid until they are withdrawn. This standard
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the fourth
edition of IEC 60745-1:
– requirements in various clauses introduced or modified in order to include the
requirements for transportable tools and lawn and garden machinery (formerly covered by
IEC 61029-1 and IEC 60335-1);
– leakage current test and electric strength test moved from former Clauses 13 and 15 to
Annexes C and D;
– former Clauses 29, 30 and 31 renumbered to become Clauses 6, 13 and 15;
– requirements for electronic safety critical functions added to Clause 18;
– requirements for switches revised and moved from Annex I to Clause 23;
– clarifications in respect to soft materials (elastomers) added to Clauses 9, 19 and 13;
– test finger in Figure 1 of IEC 60745-1 and test probe in Figure 2 of IEC 60745-1 replaced
by references to basic IEC standards;
– requirements for Li-Ion battery systems added to Annexes K and L;
– Annex M removed.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 1 is to be used in conjunction with the appropriate parts of IEC 62841-2, IEC 62841-
3 or IEC 62841-4 which contain clauses that supplement or modify the corresponding clauses
in Part 1 to provide the relevant requirements for each type of product.
NOTE 1 In this standard, the following print types are used:
– requirements: in roman type
– test specification: in italic type
– Notes: in smaller roman type
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
NOTE 2 In Annexes B, K and L, subclauses which are additional to those in the main body of the text are
numbered starting from 201.
A list of all parts of the IEC 62841 series, under the general title: Electric motor-operated
hand-held tools, transportable tools and lawn and garden machinery – Safety, can be found
on the IEC website.
The committee has decided that the contents of this document and its amendment 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, or
• revised.
NOTE 3 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

© IEC 2025
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.
NOTE 4 In Europe (EN 62841-1), the following additional paragraph applies:
When a relevant Part 2, 3, or 4 does not exist, this document can be used to support the risk assessment process
in order to establish requirements for the tool.

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INTRODUCTION
Individual countries may wish to consider the application of this Part 1 of IEC 62841, so far as
is reasonable, to tools not mentioned in an individual part of IEC 62841-2, IEC 62841-3 or
IEC 62841-4 and to tools designed on new principles.
Examples of standards dealing with non-safety aspects of hand-held tools, transportable
tools and lawn and garden machinery are
– standards dealing with EMC aspects;
– standards dealing with environmental aspects.

© IEC 2025
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 1: General requirements
1 Scope
This International Standard deals with the safety of electric motor-operated or magnetically
driven:
– hand-held tools (IEC 62841-2);
– transportable tools (IEC 62841-3);
– lawn and garden machinery (IEC 62841-4).
The above listed categories are hereinafter referred to as “tools” or “machines”.
The rated voltage is not more than 250 V for single-phase a.c. or d.c. tools, and 480 V for
three-phase a.c. tools. The rated input is not more than 3 700 W.
The limits for the applicability of this standard for battery tools are given in K.1 and L.1.
This standard deals with the hazards presented by tools which are encountered by all persons
in the normal use and reasonably foreseeable misuse of the tools.
Tools with electric heating elements are within the scope of this standard.
Requirements for motors not isolated from the supply, and having basic insulation not
designed for the rated voltage of the tools, are given in Annex B. Requirements for
rechargeable battery-powered motor-operated or magnetically driven tools and the battery
packs for such tools are given in Annex K. Requirements for such tools that are also operated
and/or charged directly from the mains or a non-isolated source are given in Annex L.
Hand-held electric tools, which can be mounted on a support or working stand for use as fixed
tools without any alteration of the tool itself, are within the scope of this standard and such
combination of a hand-held tool and a support is considered to be a transportable tool and
thus covered by the relevant Part 3.
This standard does not apply to:
– tools intended to be used in the presence of explosive atmosphere (dust, vapour or gas);
– tools used for preparing and processing food;
– tools for medical purposes;
NOTE 1 IEC 60601 series covers a variety of tools for medical purposes.
– tools intended to be used with cosmetics or pharmaceutical products;
– heating tools;
NOTE 2 IEC 60335-2-45 covers a variety of heating tools.
– electric motor-operated household and similar electrical appliances;
NOTE 3 IEC 60335 series covers a variety of electric motor-operated household and similar electrical appliances.

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– electrical equipment for industrial machine-tools;
NOTE 4 IEC 60204 series deals with electrical safety of machinery.
– small low voltage transformer operated bench tools intended for model making, e.g. the
making of radio controlled model aircraft or cars, etc.
NOTE 5 In the United States of America, the following conditions apply:
This standard deals with tools used in non-hazardous locations in accordance with the National Electrical Code,
NFPA 70.
NOTE 6 In Canada, the following conditions apply:
This standard deals with tools used in non-hazardous locations in accordance with the Canadian Electric Code,
Part 1, CSA C22.1, and General Requirements – Canadian Electrical Code, Part II, CAN/CSA-C22.2 No. 0.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60061, Lamp caps and holders together with gauges for the control of interchangeability
and safety, available at http://std.iec.ch/iec60061
IEC 60065:2001, Audio, video and similar electronic apparatus – Safety requirements
Amendment 2:2010
Amendment 1:2005
IEC 60068-2-75:1997, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC/TR 60083, Plugs and socket-outlets for domestic and similar general use standardized in
member countries of IEC
IEC 60085:2007, Electrical insulation – Thermal evaluation and designation
IEC 60127 (all parts), Miniature fuses
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60238, Edison screw lampholders
IEC 60245 (all parts), Rubber insulated cables – Rated voltages up to and including
450/750 V
IEC 60252-1, AC motor capacitors – Part 1: General – Performance, testing and rating –
Safety requirements – Guidance for installation and operation
IEC 60320 (all parts), Appliance couplers for household and similar general purposes
IEC 60320-1, Appliance couplers for household and similar general purposes – Part 1:
General requirements
_________
There exists a consolidated version (Edition 7.2:2011) which includes IEC 60065:2001 and its Amendment 1
(2005) and Amendment 2 (2010).

© IEC 2025
IEC 60335-1:2010, Household and similar electrical appliances – Safety – Part 1: General
requirements
IEC 60384-14, Fixed capacitors for use in electronic equipment – Part 14: Sectional
specification – Fixed capacitors for electromagnetic interference suppression and connection
to the supply mains
IEC 60417, Graphical symbols for use on equipment, available at http://www.graphical-
symbols.info/graphical-symbols/equipment/db1.nsf/$enHome?OpenForm
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
Amendment 1:1999
Amendment 2:2013
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products
IEC 60695-2-13:2010, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods –
Glow-wire ignition temperature (GWIT) test method for materials
IEC 60695-10-2:2003, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test
IEC 60695-11-10:2013, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and
vertical flame test methods
IEC 60730-1:2010, Automatic electrical controls for household and similar use – Part 1:
General requirements
IEC 60825-1:2007, Safety of laser products – Part 1: Equipment classification and
requirements
IEC 60884 (all parts), Plugs and socket-outlets for household and similar purposes
IEC 60906-1, IEC system of plugs and socket-outlets for household and similar purposes –
Part 1: Plugs and socket-outlets 16 A 250 V a.c.
IEC 60990:1999, Methods of measurement of touch current and protective conductor current
IEC 60998-2-1, Connecting devices for low-voltage circuits for household and similar
purposes – Part 2-1: Particular requirements for connecting devices as separate entities with
screw-type clamping units
IEC 60998-2-2, Connecting devices for low-voltage circuits for household and similar
purposes – Part 2-2: Particular requirements for connecting devices as separate entities with
screwless-type clamping units
IEC 60999-1:1999, Connecting devices – Electrical copper conductors – Safety requirements
for screw-type and screwless-type clamping units – Part 1: General requirements and
2 2
particular requirements for clamping units for conductors from 0,2 mm up to 35 mm
(included)
_________
There exists a consolidated version (Edition 2.2:2013) which includes IEC 60529:1989 and its Amendment 1
(1999) and Amendment 2 (2013).

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IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
Amendment 1:2007
Amendment 2:2010
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
IEC 61032:1997, Protection of persons and equipment by enclosures – Probes for verification
IEC 61056-1, General purpose lead-acid batteries (valve-regulated types) – Part 1: General
requirements, functional characteristics – Methods of test
IEC 61058-1:2000, Switches for appliances – Part 1: General requirements
Amendment 1:2001
Amendment 2:2007
IEC 61210, Connecting devices – Flat quick-connect terminations for electrical copper
conductors – Safety requirements
IEC 61540:1997, Electrical accessories – Portable residual current devices without integral
overcurrent protection for household and similar use (PRCDs)
Amendment 1:1998
IEC 61558-1, Safety of power transformers, power supplies, reactors and similar products –
Part 1: General requirements and tests
IEC 61558-2-4, Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V – Part 2-4: Particular requirements and tests for isolating
transformers and power supply units incorporating isolating transformers
IEC 61558-2-6, Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V – Part 2-6: Particular requirements and tests for safety isolating
transformers and power supply units incorporating safety isolating transformers
_________
There exists a consolidated version (Edition 3.2:2010) which includes IEC 61000-4-3:2006 and its Amendment
1 (2007) and Amendment 2 (2010).
There exists a consolidated version (Edition 3.2:2008) which includes IEC 61058-1:2000 and its Amendment 1
(2001) and Amendment 2 (2007).
There exists a consolidated version (Edition 1.1:1999) which includes IEC 61540:1997 and its Amendment 1
(2001).
© IEC 2025
IEC 61558-2-16, Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V – Part 2-16: Particular requirements and tests for switch mode
power supply units and transformers for switch mode power supply units
IEC 61951-1, Secondary cells and batteries containing alkaline or other non-acid electrolytes
– Portable sealed rechargeable single cells – Part 1: Nickel-cadmium
IEC 61951-2, Secondary cells and batteries containing alkaline or other non-acid electrolytes
– Portable sealed rechargeable single cells – Part 2: Nickel-metal hydride
IEC 61960, Secondary cells and batteries containing alkaline or other non-acid electrolytes –
Secondary lithium cells and batteries for portable applications
IEC 61984, Connectors – Safety requirements and tests
IEC 62133, Secondary cells and batteries containing alkaline or other non-acid electrolytes –
Safety requirements for portable sealed secondary cells, and for batteries made from them,
for use in portable applications
IEC 62233, Measurement methods for electromagnetic fields of household appliances and
similar apparatus with regard to human exposure
IEC 62471, Photobiological safety of lamps and lamp systems
IEC/TR 62471-2:2009, Photobiological safety of lamps and lamp systems – Part 2: Guidance
on manufacturing requirements relating to non-laser optical radiation safety
ISO 1463, Metallic and oxide coatings – Measurement of coating thickness – Microscopical
method
ISO 2178, Non-magnetic coatings on magnetic substrates – Measurement of coating
thickness – Magnetic method
ISO 2768-1, General tolerances – Part 1: Tolerances for linear and angular dimensions
without individual tolerance indications
ISO 3744, Acoustics – Determination of sound power levels and sound energy levels of noise
sources using sound pressure – Engineering methods for an essentially free field over a
reflecting plane
ISO 3864-2, Graphical symbols – Safety colours and safety signs – Part 2: Design principles
for product safety labels
ISO 3864-3, Graphical symbols – Safety colours and safety signs – Part 3: Design principles
for graphical symbols for use in safety signs
ISO 4871:1996, Acoustics – Declaration and verification of noise emission values of
machinery and equipment
ISO 5347 (all parts), Methods for the calibration of vibration and shock pick-ups
ISO 5349-1, Mechanical vibration – Measurement and evaluation of human exposure to hand-
transmitted vibration – Part 1: General requirements
ISO 5349-2, Mechanical vibration – Measurement and evaluation of human exposure to hand-
transmitted vibration – Part 2: Practical guidance for measurement in the workplace

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ISO 7000:2012, Graphical symbols for use on equipment – Index and synopsis
ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs
ISO 7574-4, Acoustics – Statistical methods for determining and verifying stated noise
emission values of machinery and equipment – Part 4: Methods for stated values for batches
of machines
ISO 8041, Human response to vibration – Measuring instrumentation
ISO 9772:2012, Cellular plastics – Determination of horizontal burning characteristics of small
specimens subjected to a small flame
ISO 11201, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions in an
essentially free field over a reflecting plane with negligible environmental corrections
ISO 11203, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions from the
sound power level
ISO 12100, Safety of machinery – General principles for design – Risk assessment and risk
reduction
ISO 13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General
principles for design
ISO 13850, Safety of machinery – Emergency stop – Principles for design
ISO/TR 11690-3, Acoustics – Recommended practice for the design of low-noise workplaces
containing machinery – Part 3: Sound propagation and noise prediction in workrooms
ISO 16063-1, Methods for the calibration of vibration and shock transducers – Part 1: Basic
concepts
EN 12096, Mechanical vibration – Declaration and verification of vibration emission values
ASTM B 258, Standard specification for standard nominal diameters and cross-sectional
areas of AWG sizes of solid round wires used as electrical conductors
UL 969, Standard for marking and labeling systems
NOTE 1 In the United States of America, the following normative reference applies:
US, Code of Federal Regulations (CFR) Title 21, Food and Drugs.
NOTE 2 In Canada, the following normative reference applies:
C.R.C., c. 1370, Radiation Emitting Devices Regulations
NOTE 3 In Europe (EN 62841-1), the following normative references apply:
CR 1030-1, Hand-arm vibration – Guidelines for vibration hazards reduction – Part 1: Engineering methods by
design of machinery
EN ISO 11688-1, Acoustics – Recommended practice for the design of low-noise machinery and equipment –
Part 1: Planning (ISO/TR 11688-1)

© IEC 2025
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Where the terms voltage and current are used, they imply the r.m.s. values, unless otherwise
specified.
Where in this standard the expressions “with the aid of a tool”, “without the aid of a tool”, and
“requires the use of a tool”, are used, the word “tool” means a hand tool, for example a
screwdriver, which may be used to operate a screw or other fixing means.
3.1
accessible part
conductive part or surface of insulating materials that can be touched by means of the test
probe B of IEC 61032:1997
3.2
accessory
device that is attached only to the output mechanism of the tool
3.3
adjustable guard
guard which is adjustable as a whole or which incorporates adjustable part(s). For manually
adjustable guards, the adjustment remains fixed during a particular operation
3.4
all-pole disconnection
disconnection of all supply conductors except the protective earthing (grounding) conductor
by a single initiating action
3.5
attachment
device attached to the housing or other component of the tool and which may or may not be
attached to the output mechanism and does not modify the normal use of the tool within the
scope of this standard
3.6
basic insulation
insulation applied to live parts to provide protection against electric shock. Insulation applied
to live parts not intended to provide electric shock protection is considered to be insulation
for functional purposes, such as magnet wire insulation
3.7
battery
assembly of one or more cells intended to provide electrical current to the tool
3.8
class I tool
tool in which protection against electric shock does not rely on basic, double or reinforced
insulation only, but which includes an additional safety precaution in that conductive
accessible parts are connected to the protective earthing conductor in the fixed wiring of the
installation in such a way that conductive accessible parts cannot become live in the event of
a failure of the basic insulation
Note 1 to entry: Also considered as class I tools are tools with double insulation and/or reinforced insulation
throughout, but also having an earthing terminal or earthing contact.

REDLINE VERSION – 16 – IEC 62841-1:2014+AMD1:2025 CSV
© IEC 2025
3.9
class II tool
tool in which protection against electric shock does not rely on basic insulation only, but in
which additional safety precautions, such as double insulation or reinforced insulation, are
provided, there being no provision for protective earthing or reliance upon installation
conditions
3.10
class III tool
tool in which protection against electric shock relies on supply at safety extra-low voltage,
and in which voltages higher than those of safety extra-low voltages are not generated
3.11
class II construction
part of a tool for which protection against electric shock relies upon double insulation or
reinforced insulation
3.12
class III construction
part of a tool for which protection against electric shock relies upon safety extra-low voltage,
and in which voltages higher than those of safety extra-low voltages are not generated
3.13
clearance
shortest distance between two conductive parts, or between a conductive part and the outer
surface of the enclosure, considered as though metal foil were pressed into contact with
accessible surfaces of insulating material, measured through air
Note 1 to entry: Examples of clearances are given in Annex A.
3.14
control device
device used by the user to adjust and/or regulate an electrical or mechanical function of the
tool
3.15
creepage distance
shortest path between two conductive parts, or between a conductive part and the outer
surface of the enclosure, considered as though metal foil were pressed into contact with
accessible surfaces of insulating material, measured along the surface of the insulating
material
Note 1 to entry: Examples of creepage distances are given in Annex A.
3.16
detachable part
part which can be removed or opened without the aid of a tool, or a part which is removed in
accordance with the instruction for use, except externally accessible brush caps, even if
removal requires the use of a tool
Note 1 to entry: A non-detachable part is covered by the requirements of 21.22.
3.17
double insulation
insulation system comprising both basic insulation and supplementary insulation
3.18
electronic circuit
circuit incorporating at least one electronic component

© IEC 2025
3.19
electronic component
part in which conduction is achieved principally by electrons moving through a vacuum, gas or
semiconductor, with the exclusion of neon indicators
Note 1 to entry: Examples of electronic components are diodes, transistors, triacs and monolithic integrated
circuits. Resistors, capacitors and inductors are not considered electronic components.
3.20
explosion
failure that occurs, when an enclosure opens violently and major components are forcibly
expelled in a manner that could result in injury
3.21
extra-low voltage
voltage supplied from a source within the to
...

IEC 62841-1 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 1: General requirements
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 1: Règles générales
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IEC 62841-1 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and

garden machinery – Safety –
Part 1: General requirements
Outils électroportatifs à moteur, outils portables et machines pour jardins et

pelouses – Sécurité –
Partie 1: Règles générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XH
ICS 25.140.20 ISBN 978-2-8322-1402-2

– 2 – IEC 62841-1:2014 © IEC 2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 13
4 General requirements . 20
5 General conditions for the tests . 20
6 Radiation, toxicity and similar hazards . 23
7 Classification . 24
8 Marking and instructions . 24
9 Protection against access to live parts . 35
10 Starting . 36
11 Input and current . 37
12 Heating . 37
13 Resistance to heat and fire . 42
14 Moisture resistance . 43
15 Resistance to rusting . 46
16 Overload protection of transformers and associated circuits . 47
17 Endurance . 47
18 Abnormal operation . 48
19 Mechanical hazards . 56
20 Mechanical strength . 58
21 Construction . 60
22 Internal wiring . 70
23 Components . 71
24 Supply connection and external flexible cords . 76
25 Terminals for external conductors . 82
26 Provision for earthing . 84
27 Screws and connections . 86
28 Creepage distances, clearances and distances through insulation . 88
Annex A (normative) Measurement of creepage distances and clearances . 96
Annex B (normative) Motors not isolated from the supply mains and having basic
insulation not designed for the rated voltage of the tool . 101
Annex C (normative) Leakage current . 103
Annex D (normative) Electric strength . 107
Annex E (informative) Methods of applying ISO 13849-1 to power tools . 109
Annex F (informative) Rules for routine tests . 111
Annex G Void . 113
Annex H (normative) Determination of a low-power circuit . 114
Annex I (informative) Measurement of noise and vibration emissions . 115
Annex J Void . 130
Annex K (normative) Battery tools and battery packs . 131

Annex L (normative) Battery tools and battery packs provided with mains connection or
non-isolated sources . 150
Bibliography . 168

Figure 1 – Test fingernail . 93
Figure 2 – Flexing test apparatus . 94
Figure 3 – Overload test of a class II armature . 95
Figure A.1 – Clearance gap for parallel sided and V-shaped groove . 97
Figure A.2 – Clearance gap for rib and uncemented joint with groove . 98
Figure A.3 – Clearance gap for uncemented joint and diverging-sided groove . 99
Figure A.4 – Clearance gap between wall and screw . 100
Figure B.1 – Simulation of fault conditions . 102
Figure C.1 – Diagram for leakage current measurement for single-phase connection and
three-phase tools suitable for single-phase supply . 105
Figure C.2 – Diagram for leakage current measurement for three-phase connection . 106
Figure C.3 – Circuit of the leakage current meter . 106
Figure H.1 – Example of an electronic circuit with low-power points . 114
Figure I.1 – Test bench . 127
Figure I.2 – Positions of a hand-held power tool and microphones for the hemispherical
/ cylindrical measurement surface . 128
Figure I.3 – Microphone positions on a cubic measurement surface . 128
Figure I.4 – Directions of vibration measurement . 129
Figure K.1 – Measurement of clearances . 149
Figure L.1 – Measurement of clearances . 167

Table 1 – Maximum normal temperature rises (1 of 2) . 40
Table 2 – Maximum outside surface temperature rises . 42
Table 3 – Maximum winding temperature . 49
Table 4 – Required performance levels . 55
Table 5 – Impact energies . 58
Table 6 – Test torques . 59
Table 7 – Switch trigger force . 64
Table 8 – Minimum cross-sectional area and AWG sizes of supply cords . 77
Table 9 – Pull and torque value . 80
Table 10 – Quick-connect terminals for earthing conductors . 84
Table 11 – Torque for testing screws and nuts . 87
Table 12 – Minimum creepage distances and clearances . 90
Table D.1 – Test voltages. 107
Table F.1 – Test voltages for the electric strength test . 112
Table K.1 – Minimum creepage distances and clearances between parts of opposite
polarity . 148
Table L.1 – Minimum creepage distances and clearances between parts of opposite
polarity . 166

– 4 – IEC 62841-1:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
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.
International Standard IEC 62841-1 has been prepared by IEC technical committee 116: Safety
of motor-operated electric tools.
This standard is scheduled to cancel and replace the fourth edition of IEC 60745-1, published
in 2006, the first edition of IEC 61029-1, published in 1990, and the fifth edition of IEC 60335-1,
published in 2010, only with respect to requirements concerning lawn and garden machinery.
The latter publications remain valid until they are withdrawn. This standard constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the fourth
edition of IEC 60745-1:
– requirements in various clauses introduced or modified in order to include the requirements
for transportable tools and lawn and garden machinery (formerly covered by IEC 61029-1
and IEC 60335-1);
– leakage current test and electric strength test moved from former Clauses 13 and 15 to
Annexes C and D;
– former Clauses 29, 30 and 31 renumbered to become Clauses 6, 13 and 15;
– requirements for electronic safety critical functions added to Clause 18;
– requirements for switches revised and moved from Annex I to Clause 23;
– clarifications in respect to soft materials (elastomers) added to Clauses 9, 19 and 13;
– test finger in Figure 1 of IEC 60745-1 and test probe in Figure 2 of IEC 60745-1 replaced by
references to basic IEC standards;
– requirements for Li-Ion battery systems added to Annexes K and L;
– Annex M removed.
The text of this standard is based on the following documents:
FDIS Report on voting
116/156/FDIS 116/163/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 1 is to be used in conjunction with the appropriate parts of IEC 62841-2, IEC 62841-3
or IEC 62841-4 which contain clauses that supplement or modify the corresponding clauses in
Part 1 to provide the relevant requirements for each type of product.
NOTE 1 In this standard, the following print types are used:
– requirements: in roman type
– test specification: in italic type
– Notes: in smaller roman type
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
NOTE 2 In Annexes B, K and L, subclauses which are additional to those in the main body of the text are
numbered starting from 201.
A list of all parts of the IEC 62841 series, under the general title: Electric motor-operated hand-
held tools, transportable tools and lawn and garden machinery – Safety, can be found on the
IEC website.
– 6 – IEC 62841-1:2014 © IEC 2014
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE 3 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.
The contents of the corrigenda 1 (May 2014) and 2 (October 2015) have been included in
this copy.
Rationale for corrigendum 2
The maximum parallel capacitance for instruments for measuring voltage was increased from
25 pF to 150 pF. A 25 pF maximum parallel capacitance is not typical for voltage measuring
equipment, and would require highly specialized and expensive equipment. This was not the
intention of TC 116. A maximum value of 150 pF will allow the continued use of voltage
measuring equipment currently being used by testing laboratories.

INTRODUCTION
Individual countries may wish to consider the application of this Part 1 of IEC 62841, so far as
is reasonable, to tools not mentioned in an individual part of IEC 62841-2, IEC 62841-3 or
IEC 62841-4 and to tools designed on new principles.
Examples of standards dealing with non-safety aspects of hand-held tools, transportable
tools and lawn and garden machinery are
– standards dealing with EMC aspects;
– standards dealing with environmental aspects.

– 8 – IEC 62841-1:2014 © IEC 2014
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 1: General requirements
1 Scope
This International Standard deals with the safety of electric motor-operated or magnetically
driven:
– hand-held tools (IEC 62841-2);
– transportable tools (IEC 62841-3);
– lawn and garden machinery (IEC 62841-4).
The above listed categories are hereinafter referred to as “tools” or “machines”.
The rated voltage is not more than 250 V for single-phase a.c. or d.c. tools, and 480 V for
three-phase a.c. tools. The rated input is not more than 3 700 W.
The limits for the applicability of this standard for battery tools are given in K.1 and L.1.
This standard deals with the hazards presented by tools which are encountered by all persons
in the normal use and reasonably foreseeable misuse of the tools.
Tools with electric heating elements are within the scope of this standard.
Requirements for motors not isolated from the supply, and having basic insulation not
designed for the rated voltage of the tools, are given in Annex B. Requirements for
rechargeable battery-powered motor-operated or magnetically driven tools and the battery
packs for such tools are given in Annex K. Requirements for such tools that are also operated
and/or charged directly from the mains or a non-isolated source are given in Annex L.
Hand-held electric tools, which can be mounted on a support or working stand for use as fixed
tools without any alteration of the tool itself, are within the scope of this standard and such
combination of a hand-held tool and a support is considered to be a transportable tool and
thus covered by the relevant Part 3.
This standard does not apply to:
– tools intended to be used in the presence of explosive atmosphere (dust, vapour or gas);
– tools used for preparing and processing food;
– tools for medical purposes;
NOTE 1 IEC 60601 series covers a variety of tools for medical purposes.
– tools intended to be used with cosmetics or pharmaceutical products;
– heating tools;
NOTE 2 IEC 60335-2-45 covers a variety of heating tools.
– electric motor-operated household and similar electrical appliances;
NOTE 3 IEC 60335 series covers a variety of electric motor-operated household and similar electrical appliances.
– electrical equipment for industrial machine-tools;

NOTE 4 IEC 60204 series deals with electrical safety of machinery.
– small low voltage transformer operated bench tools intended for model making, e.g. the
making of radio controlled model aircraft or cars, etc.
NOTE 5 In the United States of America, the following conditions apply:
This standard deals with tools used in non-hazardous locations in accordance with the National Electrical Code,
NFPA 70.
NOTE 6 In Canada, the following conditions apply:
This standard deals with tools used in non-hazardous locations in accordance with the Canadian Electric Code, Part
1, CSA C22.1, and General Requirements – Canadian Electrical Code, Part II, CAN/CSA-C22.2 No. 0.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 60061, Lamp caps and holders together with gauges for the control of interchangeability
and safety, available at http://std.iec.ch/iec60061
IEC 60065:2001, Audio, video and similar electronic apparatus – Safety requirements
Amendment 2:2010
Amendment 1:2005
IEC 60068-2-75:1997, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC/TR 60083, Plugs and socket-outlets for domestic and similar general use standardized in
member countries of IEC
IEC 60085:2007, Electrical insulation – Thermal evaluation and designation
IEC 60127 (all parts), Miniature fuses
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60238, Edison screw lampholders
IEC 60245 (all parts), Rubber insulated cables – Rated voltages up to and including 450/750 V
IEC 60252-1, AC motor capacitors – Part 1: General – Performance, testing and rating – Safety
requirements – Guidance for installation and operation
IEC 60320 (all parts), Appliance couplers for household and similar general purposes
IEC 60320-1, Appliance couplers for household and similar general purposes – Part 1: General
requirements
IEC 60335-1:2010, Household and similar electrical appliances – Safety – Part 1: General
requirements
_________
There exists a consolidated version (Edition 7.2:2011) which includes IEC 60065:2001 and its Amendment 1
(2005) and Amendment 2 (2010).

– 10 – IEC 62841-1:2014 © IEC 2014
IEC 60384-14, Fixed capacitors for use in electronic equipment – Part 14: Sectional
specification – Fixed capacitors for electromagnetic interference suppression and connection to
the supply mains
IEC 60417, Graphical symbols for use on equipment, available at http://www.graphical-
symbols.info/graphical-symbols/equipment/db1.nsf/$enHome?OpenForm
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
Amendment 1:1999
Amendment 2:2013
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products
IEC 60695-2-13:2010, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods –
Glow-wire ignition temperature (GWIT) test method for materials
IEC 60695-10-2:2003, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test
IEC 60695-11-10:2013, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and
vertical flame test methods
IEC 60730-1:2010, Automatic electrical controls for household and similar use – Part 1:
General requirements
IEC 60825-1:2007, Safety of laser products – Part 1: Equipment classification and
requirements
IEC 60884 (all parts), Plugs and socket-outlets for household and similar purposes
IEC 60906-1, IEC system of plugs and socket-outlets for household and similar purposes –
Part 1: Plugs and socket-outlets 16 A 250 V a.c.
IEC 60990:1999, Methods of measurement of touch current and protective conductor current
IEC 60998-2-1, Connecting devices for low-voltage circuits for household and similar purposes
– Part 2-1: Particular requirements for connecting devices as separate entities with screw-type
clamping units
IEC 60998-2-2, Connecting devices for low-voltage circuits for household and similar purposes
– Part 2-2: Particular requirements for connecting devices as separate entities with screwless-
type clamping units
IEC 60999-1:1999, Connecting devices – Electrical copper conductors – Safety requirements
for screw-type and screwless-type clamping units – Part 1: General requirements and particular
2 2
requirements for clamping units for conductors from 0,2 mm up to 35 mm (included)
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
_________
There exists a consolidated version (Edition 2.2:2013) which includes IEC 60529:1989 and its Amendment 1
(1999) and Amendment 2 (2013).

IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
Amendment 1:2007
Amendment 2:2010
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
IEC 61032:1997, Protection of persons and equipment by enclosures – Probes for verification
IEC 61056-1, General purpose lead-acid batteries (valve-regulated types) – Part 1: General
requirements, functional characteristics – Methods of test
IEC 61058-1:2000, Switches for appliances – Part 1: General requirements
Amendment 1:2001
Amendment 2:2007
IEC 61210, Connecting devices – Flat quick-connect terminations for electrical copper
conductors – Safety requirements
IEC 61540:1997, Electrical accessories – Portable residual current devices without integral
overcurrent protection for household and similar use (PRCDs)
Amendment 1:1998
IEC 61558-1, Safety of power transformers, power supplies, reactors and similar products –
Part 1: General requirements and tests
IEC 61558-2-4, Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V – Part 2-4: Particular requirements and tests for isolating
transformers and power supply units incorporating isolating transformers
IEC 61558-2-6, Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V – Part 2-6: Particular requirements and tests for safety isolating
transformers and power supply units incorporating safety isolating transformers
IEC 61558-2-16, Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V – Part 2-16: Particular requirements and tests for switch mode
power supply units and transformers for switch mode power supply units
_________
There exists a consolidated version (Edition 3.2:2010) which includes IEC 61000-4-3:2006 and its Amendment 1
(2007) and Amendment 2 (2010).
There exists a consolidated version (Edition 3.2:2008) which includes IEC 61058-1:2000 and its Amendment 1
(2001) and Amendment 2 (2007).
There exists a consolidated version (Edition 1.1:1999) which includes IEC 61540:1997 and its Amendment 1
(2001).
– 12 – IEC 62841-1:2014 © IEC 2014
IEC 61951-1, Secondary cells and batteries containing alkaline or other non-acid electrolytes –
Portable sealed rechargeable single cells – Part 1: Nickel-cadmium
IEC 61951-2, Secondary cells and batteries containing alkaline or other non-acid electrolytes –
Portable sealed rechargeable single cells – Part 2: Nickel-metal hydride
IEC 61960, Secondary cells and batteries containing alkaline or other non-acid electrolytes –
Secondary lithium cells and batteries for portable applications
IEC 61984, Connectors – Safety requirements and tests
IEC 62133, Secondary cells and batteries containing alkaline or other non-acid electrolytes –
Safety requirements for portable sealed secondary cells, and for batteries made from them, for
use in portable applications
IEC 62233, Measurement methods for electromagnetic fields of household appliances and
similar apparatus with regard to human exposure
IEC 62471, Photobiological safety of lamps and lamp systems
IEC/TR 62471-2:2009, Photobiological safety of lamps and lamp systems – Part 2: Guidance
on manufacturing requirements relating to non-laser optical radiation safety
ISO 1463, Metallic and oxide coatings – Measurement of coating thickness – Microscopical
method
ISO 2178, Non-magnetic coatings on magnetic substrates – Measurement of coating thickness
– Magnetic method
ISO 2768-1, General tolerances – Part 1: Tolerances for linear and angular dimensions without
individual tolerance indications
ISO 3744, Acoustics – Determination of sound power levels and sound energy levels of noise
sources using sound pressure – Engineering methods for an essentially free field over a
reflecting plane
ISO 3864-2, Graphical symbols – Safety colours and safety signs – Part 2: Design principles
for product safety labels
ISO 3864-3, Graphical symbols – Safety colours and safety signs – Part 3: Design principles
for graphical symbols for use in safety signs
ISO 4871:1996, Acoustics – Declaration and verification of noise emission values of machinery
and equipment
ISO 5347 (all parts), Methods for the calibration of vibration and shock pick-ups
ISO 5349-1, Mechanical vibration – Measurement and evaluation of human exposure to hand-
transmitted vibration – Part 1: General requirements
ISO 5349-2, Mechanical vibration – Measurement and evaluation of human exposure to hand-
transmitted vibration – Part 2: Practical guidance for measurement in the workplace
ISO 7000:2012, Graphical symbols for use on equipment – Index and synopsis
ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs

ISO 7574-4, Acoustics – Statistical methods for determining and verifying stated noise
emission values of machinery and equipment – Part 4: Methods for stated values for batches of
machines
ISO 8041, Human response to vibration – Measuring instrumentation
ISO 9772:2012, Cellular plastics – Determination of horizontal burning characteristics of small
specimens subjected to a small flame
ISO 11201, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions in an
essentially free field over a reflecting plane with negligible environmental corrections
ISO 11203, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions from the
sound power level
ISO 12100, Safety of machinery – General principles for design – Risk assessment and risk
reduction
ISO 13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General
principles for design
ISO 13850, Safety of machinery – Emergency stop – Principles for design
ISO/TR 11690-3, Acoustics – Recommended practice for the design of low-noise workplaces
containing machinery – Part 3: Sound propagation and noise prediction in workrooms
ISO 16063-1, Methods for the calibration of vibration and shock transducers – Part 1: Basic
concepts
EN 12096, Mechanical vibration – Declaration and verification of vibration emission values
ASTM B 258, Standard specification for standard nominal diameters and cross-sectional areas
of AWG sizes of solid round wires used as electrical conductors
UL 969, Standard for marking and labeling systems
NOTE 1 In the United States of America, the following normative reference applies:
US, Code of Federal Regulations (CFR) Title 21, Food and Drugs.
NOTE 2 In Canada, the following normative reference applies:
C.R.C., c. 1370, Radiation Emitting Devices Regulations
NOTE 3 In Europe (EN 62841-1), the following normative references apply:
CR 1030-1, Hand-arm vibration – Guidelines for vibration hazards reduction – Part 1: Engineering methods by
design of machinery
EN ISO 11688-1, Acoustics – Recommended practice for the design of low-noise machinery and equipment –
Part 1: Planning (ISO/TR 11688-1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Where the terms voltage and current are used, they imply the r.m.s. values, unless otherwise
specified.
– 14 – IEC 62841-1:2014 © IEC 2014
Where in this standard the expressions “with the aid of a tool”, “without the aid of a tool”, and
“requires the use of a tool”, are used, the word “tool” means a hand tool, for example a
screwdriver, which may be used to operate a screw or other fixing means.
3.1
accessible part
conductive part or surface of insulating materials that can be touched by means of the test
probe B of IEC 61032:1997
3.2
accessory
device that is attached only to the output mechanism of the tool
3.3
adjustable guard
guard which is adjustable as a whole or which incorporates adjustable part(s). For manually
adjustable guards, the adjustment remains fixed during a particular operation
3.4
all-pole disconnection
disconnection of all supply conductors except the protective earthing (grounding) conductor by
a single initiating action
3.5
attachment
device attached to the housing or other component of the tool and which may or may not be
attached to the output mechanism and does not modify the normal use of the tool within the
scope of this standard
3.6
basic insulation
insulation applied to live parts to provide protection against electric shock. Insulation applied
to live parts not intended to provide electric shock protection is considered to be insulation for
functional purposes, such as magnet wire insulation
3.7
battery
assembly of one or more cells intended to provide electrical current to the tool
3.8
class I tool
tool in which protection against electric shock does not rely on basic, double or reinforced
insulation only, but which includes an additional safety precaution in that conductive
accessible parts are connected to the protective earthing conductor in the fixed wiring of the
installation in such a way that conductive accessible parts cannot become live in the event of
a failure of the basic insulation
Note 1 to entry: Also considered as class I tools are tools with double insulation and/or reinforced insulation
throughout, but also having an earthing terminal or earthing contact.
3.9
class II tool
tool in which protection against electric shock does not rely on basic insulation only, but in
which additional safety precautions, such as double insulation or reinforced insulation, are
provided, there being no provision for protective earthing or reliance upon installation
conditions
3.10
class III tool
tool in which protection against electric shock relies on supply at safety extra-low voltage,
and in which voltages higher than those of safety extra-low voltages are not generated
3.11
class II construction
part of a tool for which protection against electric shock relies upon double insulation or
reinforced insulation
3.12
class III construction
part of a tool for which protection against electric shock relies upon safety extra-low voltage,
and in which voltages higher than those of safety extra-low voltages are not generated
3.13
clearance
shortest distance between two conductive parts, or between a conductive part and the outer
surface of the enclosure, considered as though metal foil were pressed into contact with
accessible surfaces of insulating material, measured throug
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