SIST EN IEC 62841-3-7:2021

Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-7: Particular requirements for transportable wall saws

This document applies to transportable wall saws guided by a track guiding system intended
for dry cutting or to be connected to a liquid system for cutting concrete, stone or similar
material by means of a diamond wheel. The rated speed of the diamond wheel does not
exceed a peripheral speed of 100 m/s at rated capacity.
This document does not apply to transportable wall saws that are intended to be left unattended
while performing an operation.
This document does not apply to transportable wall saws that employ hydraulic systems.
This document does not apply to hand-held cut-off machines.
NOTE 101 Hand-held cut-off machines will be covered by a future part of IEC 62841-2.

Elektrische motorbetriebene handgeführte Werkzeuge, transportable Werkzeuge und Rasen- und Gartenmaschinen – Sicherheit – Teil 3-7: Besondere Anforderungen für transportable Wandsägen

Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 3-7: Exigences particulières pour les scies murales portables

IEC 62841-3-7:2020 Le présent document s'applique aux scies murales portables guidées par un système de guidage de piste, destinées à couper à sec ou à être raccordées à un système liquide pour couper du béton, de la pierre ou un matériau similaire au moyen d'une meule diamant. La vitesse assignée de la meule diamant ne dépasse pas une vitesse périphérique de 100 m/s à la capacité assignée.
La tension assignée est inférieure à 250 V pour les outils à courant monophasé alternatif ou continu, et inférieure à 480 V pour les outils à courant alternatif triphasé.
Le présent document ne s’applique pas aux scies murales portables qui sont destinées à être laissées sans surveillance pendant l’exécution d’une manœuvre.
Le présent document ne s’applique pas aux scies murales portables qui utilisent des systèmes hydrauliques.
Le présent document ne s'applique pas aux machines à tronçonner portatives.

Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 3-7. del: Posebne zahteve za premične stenske žage

General Information

• Status: Published
• Publication Date: 14-Jun-2021
• ICS: 25.080.60 - Sawing machines
• ICS: 25.140.20 - Electric tools
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Jun-2021
• Due Date: 09-Aug-2021
• Completion Date: 15-Jun-2021
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: EN IEC 62841-3-7:2021 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-7: Particular requirements for transportable wall saws

Relations

• Amended By: SIST EN IEC 62841-3-7:2021/A11:2021 - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-7: Particular requirements for transportable wall saws
• Effective Date: 01-Jul-2021

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 62841-3-7:2021
01-julij-2021
Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 3-
7. del: Posebne zahteve za premične stenske žage
Electric motor-operated hand-held tools, transportable tools and lawn and garden
machinery - Safety - Part 3-7: Particular requirements for transportable wall saws
Elektrische motorbetriebene handgeführte Werkzeuge, transportable Werkzeuge und
Rasen- und Gartenmaschinen – Sicherheit – Teil 3-7: Besondere Anforderungen für
transportable Wandsägen
Ta slovenski standard je istoveten z: EN IEC 62841-3-7:2021
ICS:
25.080.60 Strojne žage Sawing machines
25.140.20 Električna orodja Electric tools
SIST EN IEC 62841-3-7:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62841-3-7:2021

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SIST EN IEC 62841-3-7:2021


EUROPEAN STANDARD EN IEC 62841-3-7

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2021
ICS 25.140.20

English Version
Electric motor-operated hand-held tools, transportable tools and
lawn and garden machinery - Safety - Part 3-7: Particular
requirements for transportable wall saws
(IEC 62841-3-7:2020)
Outils électroportatifs à moteur, outils portables et machines Elektrische motorbetriebene handgeführte Werkzeuge,
pour jardins et pelouses - Sécurité - Partie 3-7: Exigences transportable Werkzeuge und Rasen- und
particulières pour les scies murales portables Gartenmaschinen - Sicherheit - Teil 3-7: Besondere
(IEC 62841-3-7:2020) Anforderungen für transportable Wandsägen
(IEC 62841-3-7:2020)
This European Standard was approved by CENELEC on 2020-07-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 62841-3-7:2021 E

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SIST EN IEC 62841-3-7:2021
EN IEC 62841-3-7:2021 (E)
European foreword
The text of document 116/455/FDIS, future edition 1 of IEC 62841-3-7, prepared by IEC/TC 116
"Safety of motor-operated electric tools" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62841-3-7:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-04-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-04-26
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of
EN IEC 62841-3-7:2021/A11:2021.
Endorsement notice
The text of the International Standard IEC 62841-3-7:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
ISO 11203:1995 NOTE Harmonized as EN ISO 11203:2009 (not modified)


2

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SIST EN IEC 62841-3-7:2021



IEC 62841-3-7

®


Edition 1.0 2020-06




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Electric motor-operated hand-held tools, transportable tools and lawn and

garden machinery – Safety –

Part 3-7: Particular requirements for transportable wall saws



Outils électroportatifs à moteur, outils portables et machines pour jardins et

pelouses – Sécurité –


Partie 3-7: Exigences particulières pour les scies murales portables













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 25.140.20 ISBN 978-2-8322-8443-8




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

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CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirements . 9
5 General conditions for the tests . 9
6 Radiation, toxicity and similar hazards . 9
7 Classification . 9
8 Marking and instructions . 10
9 Protection against access to live parts . 12
10 Starting . 12
11 Input and current . 12
12 Heating . 12
13 Resistance to heat and fire . 12
14 Moisture resistance . 12
15 Resistance to rusting . 15
16 Overload protection of transformers and associated circuits . 15
17 Endurance . 15
18 Abnormal operation . 15
19 Mechanical hazards . 16
20 Mechanical strength . 18
21 Construction . 19
22 Internal wiring . 20
23 Components . 20
24 Supply connection and external flexible cords . 21
25 Terminals for external conductors . 22
26 Provision for earthing . 22
27 Screws and connections . 22
28 Creepage distances, clearances and distances through insulation . 22
Annexes . 23
Annex C (normative) Leakage current . 23
Annex I (informative) Measurement of noise and vibration emissions . 24
Annex K (normative) Battery tools and battery packs . 28
Bibliography . 29

Figure 101 – Wall saw . 8
Figure 102 – Wall saw with wheel guard removed . 9
Figure 103 – Safety sign illustrating – "WARNING – Always wear eye protection" . 10
Figure I.101 – Wall saw setup for noise measurement (wheel guard not shown) . 25

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Table 4 – Required performance levels . 16
Table 101 – Material properties and minimum thickness of the wheel guard . 18
Table 8 – Minimum cross-sectional area and AWG sizes of supply cords . 21
Table I.101 – Expected uncertainty values . 27

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –

Part 3-7: Particular requirements for transportable wall 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
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 62841-3-7 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
The text of this International Standard is based on the following documents:
FDIS Report on voting
116/455/FDIS 116/461/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.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 3-7 is to be used in conjunction with IEC 62841-1:2014.

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This Part 3-7 supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC Standard: Particular requirements for transportable wall saws.
Where a particular subclause of Part 1 is not mentioned in this Part 3-7, that subclause applies
as far as relevant. Where this standard states "addition", "modification" or "replacement", the
relevant text in Part 1 is to be adapted accordingly.
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.
Subclauses, notes and figures which are additional to those in Part 1 are numbered starting
from 101.
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 will remain unchanged until the
stability date indicated on the IEC website under "http://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.

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ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –

Part 3-7: Particular requirements for transportable wall saws



1 Scope
This clause of Part 1 is applicable, except as follows:
Replacement of the third paragraph:
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.
Addition:
This document applies to transportable wall saws guided by a track guiding system intended
for dry cutting or to be connected to a liquid system for cutting concrete, stone or similar
material by means of a diamond wheel. The rated speed of the diamond wheel does not
exceed a peripheral speed of 100 m/s at rated capacity.
This document does not apply to transportable wall saws that are intended to be left unattended
while performing an operation.
This document does not apply to transportable wall saws that employ hydraulic systems.
This document does not apply to hand-held cut-off machines.
NOTE 101 Hand-held cut-off machines will be covered by a future part of IEC 62841-2.
2 Normative references
This clause of Part 1 is applicable, except as follows:
Replacement of normative reference ISO 3744:
ISO 3744:2010, 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
Replacement of normative reference ISO 11201:
ISO 11201:2010, 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

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Addition:
IEC 61008-1:2010, Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses (RCCBs) – Part 1: General rules
IEC 61008-1:2010/AMD1:2012
IEC 61008-1:2010/AMD2:2013
IEC 62841-1:2014, Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety – Part 1: General requirements
ISO 6603-1, Plastics – Determination of puncture impact behaviour of rigid plastics – Part 1:
Non-instrumented impact testing
3 Terms and definitions
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
This clause of Part 1 is applicable, except as follows:
3.36 Addition:
NOTE 101 to entry: The primary function of a wall saw is the operation of the diamond wheel.
3.58 Modification:
Item g) is not applicable.
3.101
diamond wheel
metal wheel with a continuous or segmented abrasive rim
3.102
flange
collar, disc, or plate between or against which diamond wheels are mounted
3.103
rated capacity
maximum intended diameter of the diamond wheel to be fitted on the tool as recommended by
the manufacturer's instructions
3.104
remote connection
active communication between the tool and remote control, either wired or wireless
3.105
remote control
unit with an enclosure separate from the wall saw with user controls consisting of at least a
power switch for attended operation of the wall saw
Note 1 to entry: Controlling a wall saw with a remote control provides improved ergonomics for the operator.
3.106
saw unit
unit on which the diamond wheel, the wheel guard and the interface to connect it to the track
guiding system are mounted

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3.107
track guiding system
device for guiding the saw unit during the cutting operation and which is mounted to the
workpiece
3.108
wall saw
tool designed to saw or groove concrete, stone or similar material, consisting of a saw unit and
a track guiding system, which are combined for normal operation by a suitable interface and
operated with or without a remote control
Note 101 to entry: See Figure 101 and Figure 102.
3.109
wheel guard
device which partly encloses the diamond wheel and gives protection to the operator

Figure 101 – Wall saw

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Figure 102 – Wall saw with wheel guard removed
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable, except as follows:
5.17 Addition:
The mass of the tool does not include the track guiding system, but does include the wheel
guard and the auxiliary handle, if provided.
6 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.
7 Classification
This clause of Part 1 is applicable.

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8 Marking and instructions
This clause of Part 1 is applicable, except as follows:
8.1 Addition:
– recommended speed for each diamond wheel diameter specified in 8.14.2 a) 101);
– rated capacity.
8.2 Addition:
Wall saws shall also be marked with:
– " WARNING Always wear eye protection" or the symbol ISO 7010-M004-2019-07 or the
safety sign in Figure 103:

Figure 103 – Safety sign illustrating – "WARNING – Always wear eye protection"
The safety sign in Figure 103 may be modified by adding other personal protective equipment,
such as ear protection or a dust mask.
8.3 Replacement of the sixth dash:
– ">25 kg" on each separable enclosure with a mass above 25 kg.
NOTE 101 Examples of separable enclosures include the saw unit, diamond wheel, wheel guard and power
converting or control unit(s), if any.
Addition:
The direction of rotation of the spindle shall be indicated on the tool by an arrow, raised or
recessed or by any other means no less visible and indelible.
8.14.1 Addition:
The additional safety instructions as specified in 8.14.1.101 shall be given. This information
may be printed separately from the "General Power Tool Safety Warnings".
8.14.1.101 Safety instructions for wall saws
a) Operate the power tool by insulated grasping surfaces when performing an operation
where the cutting accessory can contact hidden wiring or its own cord. A cutting
accessory contacting a "live" wire can make exposed metal parts of the power tool "live"
and could give the operator an electric shock.
b) Wear ear protectors when diamond sawing. Exposure to noise can cause hearing loss.
c) If the diamond wheel becomes jammed, stop applying feed force and turn off the tool.
Investigate and take corrective actions to eliminate the cause of the diamond wheel
jamming. Continued operation with a jammed diamond wheel could cause loss of control
or damage to the wall saw.
d) When sawing through the workpiece, ensure to protect persons and the work area on
the other side. The diamond wheel may protrude through the workpiece.

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e) Ensure that the method of securing the track guiding system to the workpiece is
capable of holding and restraining the machine during use. If the workpiece is weak or
porous, the anchor(s) can pull out, causing the track guiding system to release from the
workpiece.
8.14.2 a) Addition:
101) Information about which diamond wheels (type, arbor size, diameter and thickness)
can be used with the tool, including the recommended tool speed for each diamond
wheel diameter;
102) Information on the types of material that may be cut;
103) Instructions on how to mount the track guiding system to the workpiece;
104) Instructions on how to assemble the guarding system, dust extraction system or liquid
system, and the saw unit to the track guiding system;
8.14.2 b) Addition:
101) Instructions on how to use wheel guards, such as removing portions of the wheel guard
for special cutting operations (e.g. flush cutting);
102) Instructions on how to connect a remote control;
103) Information about the specific flanges to be used with all diamond wheels in
accordance with 8.14.2 a) 101). Instruction on the mounting of diamond wheels and
the use of the correct flanges;
104) Instructions on how to perform an initial guide cut.
8.14.2 c) Addition:
101) Instruction on storage and handling of diamond wheels.
Replacement of the NOTE:
NOTE In Europe (EN 62841-3-7), the following additional requirements apply:
Emissions
1) The noise emission, measured in accordance with I.2, as follows:
– A-weighted sound pressure level L and its uncertainty K , where L exceeds 70 dB(A).
pA pA pA
Where L does not exceed 70 dB(A), this fact shall be indicated;
pA
– A-weighted sound power level L and its uncertainty K , where the A-weighted sound pressure level
WA WA
L exceeds 80 dB(A);
pA
– peak C-weighted instantaneous sound pressure value L , where this exceeds 63 Pa (130 dB in
pCpeak
relation to 20 µPa).
2) Recommendation for the operator to wear hearing protection.
3) The following information:
– that the declared noise emission value(s) have been measured in accordance with a standard test
method and may be used for comparing one tool with another;
– that the declared noise emission value(s) may also be used in a preliminary assessment of exposure.
4) A warning:
– that the noise emissions during actual use of the power tool can differ by up to 10 dB compared to the
declared values, depending on the diamond wheel and working conditions, which should be taken into
account when selecting hearing protection; and
– of the need to identify safety measures to protect the operator that are based on an estimation of
exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the
times when the tool is switched off and when it is running idle in addition to the trigger time).

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8.14.3 Replacement:
If information about the mass or weight of the tool is provided, it shall either be the mass
specified in 5.17, or it shall be clear which part of the tool the mass refers to.
Compliance is checked by inspection.
9 Protection against access to live parts
This clause of Part 1 is applicable.
10 Starting
This clause of Part 1 is applicable.
11 Input and current
This clause of Part 1 is applicable.
12 Heating
This clause of Part 1 is applicable.
13 Resistance to heat and fire
This clause of Part 1 is applicable.
14 Moisture resistance
This clause of Part 1 is applicable, except as follows:
14.2.1 Replacement:
The tool is not connected to the supply.
Tools are turned continuously at approximately 1 r/min through the most unfavourable positions
during the test.
The test is performed with any remote control connected in accordance with 8.14.2 b) 102).
Electrical components, covers and other parts, except for cover(s) or cap(s)as specified below,
that can be removed without the aid of a tool are removed and subjected, if necessary, to the
relevant treatment with the main part.
If cover(s) or cap(s) are used that
– are detachable without the aid of a tool; and
– provide protection for a connection to a remote control;
the test is repeated with the cover(s) or cap(s) installed as intended to cover the connection(s),
provided that the cap(s) or cover(s) remain attached to the wall saw when they are removed.

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14.3 Replacement:
Liquid systems or spillage of liquid shall not subject the user to an increased risk of electrical
shock.
If the tool is rated at least IPX4 in accordance with 14.2, this requirement is deemed to be
fulfilled.
Compliance is checked by the following test:
The residual current device, if any, shall be disabled during the test. Electrical components,
covers and other parts which can be removed without the aid of a tool are removed,
...