IEC 62841-2-20:2024
(Main)Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 2-20: Particular requirements for hand-held band saws
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 2-20: Particular requirements for hand-held band saws
IEC 62841-2-20:2024 is to be used in conjunction with IEC 62841-1:2014. This document supplements or modifies the corresponding clauses in IEC 62841-1, so as to convert it into the IEC Standard: Particular requirements for hand-held band saws. Where a particular subclause of IEC 62841-1 is not mentioned in this document, that subclause applies as far as reasonable. Where this document states "addition", "modification" or "replacement", the relevant text in IEC 62841-1 is to be adapted accordingly.
IEC 62841-1:2014, Clause 1 is applicable, except as follows:
This document applies to hand-held band saws.
Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses Sécurité - Partie 2-20: Exigences particulières pour les scies à ruban portatives
L'IEC 62841-2-20:2024 doit être utilisé conjointement avec l'IEC 62841-1:2014. Ce document complète ou modifie les articles correspondants de l'IEC 62841-1, de façon à la transformer en norme IEC: Exigences particulières pour les scies à ruban portatives.Lorsqu'un paragraphe particulier de l’IEC 62841-1 n'est pas mentionné dans le présent document, ce paragraphe s'applique pour autant que cela soit raisonnable. Lorsque le présent document mentionne "addition", "modification" ou "remplacement", le texte correspondant de l’IEC 62841-1 doit être adapté en conséquence.
L’Article 1 de l’IEC 62841-1:2014 s’applique avec l’exception suivante: Le présent document s'applique aux scies à ruban portatives.
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IEC 62841-2-20 ®
Edition 1.0 2024-06
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 62841-2-20:2024 includes the content of the references made to
IEC 62841-1:2014
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-20: Particular requirements for hand-held band saws
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
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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International Standards for all electrical, electronic and related technologies.
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IEC 62841-2-20 ®
Edition 1.0 2024-06
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 62841-2-20:2024 includes the content of the references made to
IEC 62841-1:2014
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-20: Particular requirements for hand-held band saws
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.140.20 ISBN 978-2-8322-9356-0
– 2 – IEC 62841-2-20:2024 EXV © IEC 2024
CONTENTS
FOREWORD . 5
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 15
4 General requirements . 21
5 General conditions for the tests . 21
6 Radiation, toxicity and similar hazards . 23
7 Classification . 24
8 Marking and instructions . 25
9 Protection against access to live parts . 36
10 Starting . 37
11 Input and current . 38
12 Heating . 38
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 . 69
23 Components . 71
24 Supply connection and external flexible cords . 76
25 Terminals for external conductors . 81
26 Provision for earthing . 83
27 Screws and connections . 85
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 . 131
Annex K (normative) Battery tools and battery packs . 132
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources. 152
Bibliography . 171
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.101 – Positions of transducers for band saws . 122
Figure I.1 – Test bench . 128
Figure I.2 – Positions of a hand-held power tool and microphones for the
hemispherical / cylindrical measurement surface . 129
Figure I.3 – Microphone positions on a cubic measurement surface . 129
Figure I.4 – Directions of vibration measurement . 130
Figure K.1 – Measurement of clearances . 151
Figure L.1 – Measurement of clearances . 170
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 . 79
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 I.101 – Operating conditions for band saws intended to cut metal . 125
Table I.102 – Operating conditions for band saws intended to cut wood . 126
Table K.1 – Minimum creepage distances and clearances between parts of opposite
polarity . 150
– 4 – IEC 62841-2-20:2024 EXV © IEC 2024
Table L.1 – Minimum creepage distances and clearances between parts of opposite
polarity . 169
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 2-20: Particular requirements for hand-held band saws
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 Spe
...
IEC 62841-2-20 ®
Edition 1.0 2024-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-20: Particular requirements for hand-held band saws
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 2-20: Exigences particulières pour les scies à ruban portatives
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
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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
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committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.
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containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.
Also known as the International Electrotechnical Vocabulary
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(IEV) online.
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IEC 62841-2-20 ®
Edition 1.0 2024-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-20: Particular requirements for hand-held band saws
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 2-20: Exigences particulières pour les scies à ruban portatives
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-9117-7
– 2 – IEC 62841-2-20:2024 © IEC 2024
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 5
5 General conditions for the tests . 5
6 Radiation, toxicity and similar hazards . 5
7 Classification . 6
8 Marking and instructions . 6
9 Protection against access to live parts . 6
10 Starting . 6
11 Input and current . 6
12 Heating . 6
13 Resistance to heat and fire . 6
14 Moisture resistance . 6
15 Resistance to rusting . 6
16 Overload protection of transformers and associated circuits . 6
17 Endurance . 7
18 Abnormal operation . 7
19 Mechanical hazards . 7
20 Mechanical strength . 7
21 Construction . 7
22 Internal wiring . 8
23 Components . 8
24 Supply connection and external flexible cords . 8
25 Terminals for external conductors . 8
26 Provision for earthing . 8
27 Screws and connections . 8
28 Creepage distances, clearances and distances through insulation . 8
Annexes . 9
Annex I (informative) Measurement of noise and vibration emissions . 10
Annex K (normative) Battery tools and battery packs . 14
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 15
Bibliography . 16
Figure I.101 – Positions of transducers for band saws . 11
Table 4 – Required performance levels . 7
Table I.101 – Operating conditions for band saws intended to cut metal . 12
Table I.102 – Operating conditions for band saws intended to cut wood . 12
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 2-20: Particular requirements for hand-held band saws
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
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