IEC 62841-3-6:2014
(Main)Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-6: Particular requirements for transportable diamond drills with liquid system
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 3-6: Particular requirements for transportable diamond drills with liquid system
IEC 62841-3-6:2014 applies to transportable diamond drills, intended to be connected to a liquid system. The liquid system may include liquid from a pipe or container. 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 is given in Annex K. 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. 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. Key words: Diamond drill, Drill unit, Drill stand
This publication is to be read in conjunction with IEC 62841-1:2014. The contents of the corrigendum of May 2015 have been included in this copy.
Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses - Sécurité - Partie 3-6: Exigences particulières pour les forets diamantés transportables avec système liquide
L'IEC 62841-3-6:2014 s'applique aux forets diamantés transportables destinés à être connectés à un système liquide. Le système liquide peut inclure du liquide issu d'un tuyau ou d'un conteneur. 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. La tension assignée est inférieure à 3 700 W. Les limites d'application de la présente Norme aux outils fonctionnant sur batterie sont indiquées dans l'annexe K. L'attention des Comités Nationaux est attirée sur le fait que les fabricants d'appareils et les organismes d'essai peuvent avoir besoin d'une période transitoire après la publication d'une nouvelle publication IEC, ou d'une publication amendée ou révisée, pour fabriquer des produits conformes aux nouvelles exigences et pour adapter leurs équipements aux nouveaux essais ou aux essais révisés. Le comité recommande que le contenu de cette publication soit entériné au niveau national au plus tôt 12 mois et au plus tard 36 mois après la date de publication. Mots-clés: Forets diamantes, unité de forage, support de forage
Cette publication doit être lue conjointement avec la CEI 62841-1:2014. Le contenu du corrigendum de mai 2015 a été pris en considération dans cet exemplaire.
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Standards Content (Sample)
IEC 62841-3-6 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-6: Particular requirements for transportable diamond drills with liquid
system
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-6: Exigences particulières pour les forets diamantés transportables
avec système liquide
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IEC 62841-3-6 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-6: Particular requirements for transportable diamond drills with liquid
system
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-6: Exigences particulières pour les forets diamantés transportables
avec système liquide
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 25.140.20 ISBN 978-2-8322-1540-1
– 2 – IEC 62841-3-6:2014 © IEC 2014
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 . 6
6 Radiation, toxicity and similar hazards . 6
7 Classification . 6
8 Marking and instructions . 6
9 Protection against access to live parts . 7
10 Starting . 7
11 Input and current . 7
12 Heating . 8
13 Resistance to heat and fire . 8
14 Moisture resistance . 8
15 Resistance to rusting . 8
16 Overload protection of transformers and associated circuits . 8
17 Endurance . 8
18 Abnormal operation . 9
19 Mechanical hazards . 9
20 Mechanical strength . 10
21 Construction . 10
22 Internal wiring . 11
23 Components . 11
24 Supply connection and external flexible cords . 11
25 Terminals for external conductors . 11
26 Provision for earthing . 11
27 Screws and connections . 11
28 Creepage distances, clearances and distances through insulation . 11
Annexes . 14
Annex I (informative) Measurement of noise and vibration emissions . 14
Annex K (normative) Battery tools and battery packs . 16
Bibliography . 17
Figure 101 – Example of a diamond drill with liquid system . 12
Figure 102 – Test arrangement to check efficiency of the liquid collection device . 13
Table 4 – Required performance levels . 9
Table I.101 – Test conditions for noise and vibration . 14
Table I.102 – Concrete formulation (per cubic metre) . 15
Table I.103 – Depth of holes for the test . 15
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 3-6: Particular requirements for transportable
diamond drills with liquid system
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
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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6) All users should ensure that they have the latest edition of this publication.
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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.
This part of International Standard IEC 62841 has been prepared by technical committee 116:
Safety of motor-operated electric tools.
The text of this standard is based on the following documents:
FDIS Report on voting
116/165/FDIS 116/179/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.
– 4 – IEC 62841-3-6:2014 © IEC 2014
This Part 3-6 is to be used in conjunction with IEC 62841-1:2014.
This Part 3-6 supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC Standard: Particular requirements for transportable diamond drills with
liquid system.
Where a particular subclause of Part 1 is not mentioned in this Part 3-6, that subclause
applies as far as is reasonable. 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 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 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 corrigendum of May 2015 have been included in this copy.
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 3-6: Particular requirements for transportable
diamond drills with liquid system
1 Scope
This clause of Part 1 is applicable except as follows:
Addition:
This part of IEC 62841 applies to transportable diamond drills, intended to be connected to a
liquid system. Liquid system may include liquid from a pipe or container.
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
Addition:
3.101
diamond drill
manually fed tool with liquid system designed to drill stone and concrete by means of diamond
core bits. The tool at least consists of a drill unit and a drill stand to which it is fixed. The
drill stand is either attached to the workpiece to be drilled by means of fasteners, vacuum or
other suitable devices (see Figure 101) or the drill stand is secured to an appropriate support
such as a scaffolding
3.102
drill unit
device consisting of a motor and a fitting for the drill bit
3.103
drill stand
device for supporting the drill unit in its operating position
3.104
liquid collection device
device to collect liquid and slurry when drilling
4 General requirements
This clause of Part 1 is applicable.
– 6 – IEC 62841-3-6:2014 © IEC 2014
5 General conditions for the tests
This clause of Part 1 is applicable except as follows:
5.17 Addition:
An auxiliary handle, if provided, and the drill stand are regarded as needed for normal use.
6 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.
7 Classification
This clause of Part 1 is applicable.
8 Marking and instructions
This clause of Part 1 is applicable except as follows:
8.1 Addition:
Diamond drills shall be marked with:
– rated no-load speed.
8.14.1.1 Addition:
101) Diamond drill safety warnings
a) When performing drilling that requires the use of water, route the water away from
the operator’s work area or use a liquid collection device. Such precautionary
measures keep the operator’s work area dry and reduce the risk of electrical shock.
b) Operate power tool by insulated grasping surfaces, when performing an operation
where the cutting accessory may contact hidden wiring or its own cord. Cutting
accessory contacting a “live” wire may make exposed metal parts of the power tool “live”
and could give the operator an electric shock.
c) Wear hearing protection when diamond drilling. Exposure to noise can cause hearing
loss.
d) When the bit is jammed, stop applying downward pressure and turn off the tool.
Investigate and take corrective actions to eliminate the cause of the bit jamming.
e) When restarting a diamond drill in the workpiece check that the bit rotates freely
before starting. If the bit is jammed, it may not start, may overload the tool, or may cause
the diamond drill to release from the workpiece.
f) When securing the drill stand with anchors and fasteners to the workpiece, ensure
that the anchoring used is capable of holding and restraining the machine during
use. If the workpiece is weak or porous, the anchor may pull out causing the drill stand to
release from the workpiece.
g) When securing the drill stand with a vacuum pad to the workpiece, install the pad on
a smooth, clean, non-porous surface. Do not secure to laminated surfaces such as
tiles and composite coating. If the workpiece is not smooth, flat or well affixed, the pad
may pull away from the workpiece.
NOTE The above warning applies only if the tool is intended to be used with a vacuum pad.
h) Ensure there is sufficient vacuum before and during drilling. If the vacuum is
insufficient, the pad may release from the workpiece.
NOTE The above warning applies only if the tool is intended to be used with a vacuum pad
i) Never perform drilling with the machine secured by the vacuum pad only, except
when drilling downwards. If the vacuum is lost, the pad will release from the workpiece.
NOTE The above warning applies only if the tool is intended to be used with a vacuum pad.
j) When drilling through walls or ceilings, ensure to protect persons and the work area
on the other side. The bit may extend through the hole or the core may fall out on the
other side.
k) Do not use this tool for overhead drilling with water supply. Water entering the power
tool will increase the risk of electric shock.
NOTE The above warning is only needed for tools that cannot be used for drilling overhead.
l) When drilling overhead, always use the liquid collection device specified in the
instructions. Do not allow water to flow into the tool. Water entering the power tool
will increase the risk of electric shock.
NOTE The above warning is only needed for tools that can be used for drilling overhead.
8.14.2 a) Addition:
101) Information about which diamond core bits can be used with the machine;
102) Instruction to and information about how to mount the tool to the drill stand;
103) Information about how to install the diamond core bit to the tool and, if applicable,
information about diamond core bit assembly;
104) Instruction to and information about how to anchor the drill stand in all applicable
positions;
105) For tools using vacuum fixing devices:
– Instruction to and information about how to check the surface where the drill stand
shall be fixed;
– Instruction to additionally secure the drill stand when drilling in orientations other
than vertically down, by using appropriate accessories or means and information
how to achieve this;
– Information regarding minimum vacuum level necessary for safe operation and how
to control it during the drilling operation;
– Information regarding the maximum core bit diameter suitable for use with vacuum
fixing;
106) For tools that can be used for drilling overhead with a liquid collection device:
– Information about the minimum and maximum diamond core bit diameter that can
be used with the liquid collection device.
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.
– 8 – IEC 62841-3-6:2014 © IEC 2014
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:
14.3.101 Diamond drills which are intended to be used for drilling overhead in accordance
with 8.14.2 a) 104) and using a liquid collection device shall prevent electric shock due to
excessive liquid spillage.
Compliance is checked by the following test.
The drill unit runs vertically upwards at rated voltage under no-load condition with the liquid
collection device installed. If the liquid collection device is designed to be connected to a
liquid vacuum device, then such a device shall be attached. The test is conducted twice, the
drill being fitted once with the minimum and once with the maximum diameter of the diamond
core bit as specified for the liquid collection device in accordance with 8.14.2 a) 106).
The test arrangement is shown in Figure 102.
The liquid flow of approximately 1,0 % NaCl solution shall be in the range of 1 l/min
to 1,5 l/min. The running time shall be 15 min. The measuring time starts when the core bit is
filled with liquid.
During the test the leakage current as in Clause C.3 is monitored. The leakage current shall
not exceed:
– 2 mA for a class II tool;
– 5 mA for a class I tool.
Following this test, the tool shall meet the electric strength test of Clause D.2 between live
parts and accessible parts after being allowed to dry for 24 h at ambient temperature.
15 Resistance to rusting
This clause of Part 1 is applicable.
16 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
17 Endurance
This clause of Part 1 is applicable except as follows:
17.2 Replacement of the fifth paragraph:
Diamond drills are operated for 12 h at a voltage equal to 1,1 times rated voltage or the
upper limit of the rated voltage range, and then for 12 h at a supply voltage equal to 0,9 times
rated voltage or the lower limit of the rated voltage range. The 12 h of operation need not be
continuous. During the test, the tool is placed in three different positions, the operating time,
at each test voltage, being approximately 4 h for each position.
18 Abnormal operation
This clause of Part 1 is applicable except as follows:
18.8 Table 4 Replacement:
Table 4 – Required performance levels
Type and purpose of SCF Minimum Performance
Level (PL)
Power switch - prevent unwanted switch-on a
Power switch - provide desired switch-off b
Provide desired direction of rotation Not a SCF
Any electronic control to pass the test of 18.3 a
Overspeed prevention to prevent output speed above 130 % of a
rated (no-load) speed
Prevent exceeding thermal limits as in Clause 18 a
Limiting device to comply with 19.103 c
19 Mechanical hazards
This clause of Part 1 is applicable except as follows:
19.1 Addition:
Rotating elements such as clutches, spindles, extensions, etc., except core bits, shall be:
– without projecting parts and be of round or hexagonal shape;
Compliance is checked by inspection.
or
– protected with a fixed or self-adjusting guard.
Compliance is checked by applying test probe B of IEC 61032:1997 with a force not
exceeding 5 N to any guard fitted. It shall not be possible to contact rotating elements with
the test probe.
19.7 This subclause of Part 1 is not applicable.
19.8 This subclause of Part 1 is not applicable.
19.101 Diamond drills shall be provided with a drill stand and a drill unit.
The drill stand shall have provisions for mounting the drill stand to the workpiece to be
drilled or to an appropriate support.
– 10 – IEC 62841-3-6:2014 © IEC 2014
The drill unit shall have provisions for attaching it to the drill stand in all working positions.
The machine shall be so designed that unintentional loosening of the drill unit from the drill
stand is prevented.
Compliance is checked by inspection.
19.102 Vacuum devices for fixing the diamond drill shall be provided with a means that
informs the user of the actual vacuum.
Compliance is checked by inspection.
19.103 Vacuum devices for fixing the diamond drill shall be able to withstand the forces
during the drilling process including the situation of a jammed drill bit.
Compliance is checked by the following test which simulates the bit becoming jammed in the
work piece.
The diamond drill shall be fixed with the vacuum device to a 12 mm steel plate. The vacuum
shall be adjusted to the minimum level specified in accordance with 8.14.2 a) 105).The output
spindle of the diamond drill is coupled to a stalling device. If the tool is equipped with a gear
selection, the gear resulting in the highest torque shall be chosen. If the tool is equipped with
an adjustable clutch, this shall be adjusted to the highest torque setting. The tool shall come
to full speed and then stopped by the stalling device within 45° to 90° of spindle rotation. The
stall is maintained for 3 s. Following this test, the tool is maintained in the stalled position and
the power switch is then operated on and off 3 times.
During the test, the operator(s) shall be outside the radius of the tool in case the vacuum
system comes loose.
During the test, the drill stand shall not come loose and shall not rotate by more than 10°.
20 Mechanical strength
This clause of Part 1 is applicable except as follows:
20.5 This subclause of Part 1 is not applicable.
21 Construction
This clause of Part 1 is applicable except as follows:
21.18.2.1 This subclause of Part 1 is not applicable.
21.30 Replacement:
If handles or grasping surfaces as specified in the instruction manual are provided for manual
feeding, they shall be insulated between the grasping areas used in normal use and the
accessible parts that become live due to contact with the output shaft.
Compliance is checked by inspection and a test in accordance with 20.3.2 on the handles and
grasping surfaces, followed by an electric strength test in accordance with Clause D.2 using
1 250 V a.c. between the handles and grasping surfaces in contact with foil and the output
shaft of the tool.
22 Internal wiring
This clause of Part 1 is applicable.
23 Components
This clause of Part 1 is applicable.
24 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows:
24.4 Replacement of the first paragraph:
Supply cords shall be not lighter than heavy polychloroprene sheathed flexible cable (code
designation 60245 IEC 66) or equivalent.
25 Terminals for external conductors
This clause of Part 1 is applicable.
26 Provision for earthing
This clause of Part 1 is applicable.
27 Screws and connections
This clause of Part 1 is applicable.
28 Creepage distances, clearances and distances through insulation
This clause of Part 1 is applicable.
– 12 – IEC 62841-3-6:2014 © IEC 2014
IEC 1229/14
Key
1 drill stand
2 drill unit
3 diamond core bit
4 headstock spindle to move the drill unit up and down
5 liquid system
6 RCD (residual current device), if any
Figure 101 – Example of a diamond drill with liquid system
IEC 1230/14
Key
1 drill stand fixed with bolts
2 liquid collection device
3 connection to liquid aspirator
4 liquid outlet hose
5 adapter for wet vacuum cleaner
6 RCD (Residual Current Device), if any
7 supply cord
8 vacuum cleaner for wet operations
9 liquid supply with three way outlet valve
Figure 102 – Test arrangement to check efficiency of the liquid collection device
– 14 – IEC 62841-3-6:2014 © IEC 2014
Annexes
The annexes of Part 1 are applicable except as follows.
Annex I
(informative)
Measurement of noise and vibration emissions
I.2 Noise test code (grade 2)
This clause of Part 1 is applicable except as follows:
I.2.4 Installation and mounting conditions of the power tools during noise tests
Replacement:
Diamond drills are installed and mounted as specified under “Test set-up” in Table I.101.
Table I.101 – Test conditions for noise and vibration
Test set-up The drill stand with the drill unit is fixed on a concrete block (specified in Table I.102) having
the minimum dimensions 500 mm x 500 mm and 200 mm in height and supported on resilient
material. The fixing shall be done in accordance with 8.14.2 a).
The machine settings (speed, liquid supply, impact, etc.) shall be correctly adjusted for drilling
into concrete with the type and diameter of the core drill bit used for the test, as described in
accordance with 8.14.2 a).
The liquid collection device, if any, shall be in place during the operation of the tool as
described in accordance with 8.14.2 a).
For the noise test, the concrete block, its support and the tool shall be so oriented that the
geometric centre of the tool is approximately 1 m above the reflecting plane. The centre of the
concrete block shall be located under the top microphone.
Orientation
Drilling vertically down into the concrete block.
The drilled core holes may overlap for the cases, where the concrete block is thick enough to
enable dead end core holes.
Tool bit Core bit, for application with liquid supply, with approximately 75 % of the maximum core bit
diameter as specified in accordance with 8.14.2 a) 101).
The depth of hole shall be according to Table I.103.
Before the test the drill bit shall be sharpened on a sharpening plate and then one hole shall be
drilled to give the drill bit a normal sharpness.
Feed force The feed force applied to the tool shall be determined as follows:
Drill with the tool increasing the feed force until either the speed is significantly reduced by the
load or a torque limiting device operates. Reduce the feed force slightly until a feed force is
reached enabling stable operation. Use this feed force for the test.
Preparation The start of drilling may cause problems, because the core bit is not guided. Prior to testing, the
holes shall be prepared to a depth of 5 mm.
Test cycle The measurement starts, when the drill bit has contact with the concrete block (in 5 mm depth),
and stops at a drilling depth specified in Table I.103, or when the maximum drilling depth of the
individual core drill bit is reached, whatever is less.
Table I.102 – Concrete formulation (per cubic metre)
b
Cement Water
Aggregate
1 844 kg
Particle size Fraction (%)
a
330 kg 0 mm to 2 mm
38 ± 3
183 l
0 mm to 8 mm 50 ± 5
0 mm to 16 mm 80 ± 5
0 mm to 32 mm 100
Compressive strength after 28 days to be 40 N/mm .
a
The water/cement mass ratio shall be 0,55 ± 0,02 (the mass tolerance of cement and
water is ± 10 % to enable the concrete manufacturer to ensure compressive strength
with local cement).
b
Very hard aggregates such as flint or granite and very soft aggregates such as
limestone shall not be used.
Table I.103 – Depth of holes for the test
Diameter of diamond core bit [mm]
≤ 35 > 35
Depth of hole [mm] 100 200
I.2.5 Operating conditions
Addition:
Diamond drills are tested under load in accordance with Table I.101.
I.3 Vibration
This clause of Part 1 is not applicable.
– 16 – IEC 62841-3-6:2014 © IEC 2014
Annex K
(normative)
Battery tools and battery packs
K.1 Addition:
All clauses of this Part 3-6 apply unless otherwise specified in this annex.
K.14.3.101 This subclause is not applicable.
K.17.2 This subclause is not applicable.
K.24.4 This subclause is not applicable.
Bibliography
The bibliography of Part 1 is applicable.
____________
– 18 – IEC 62841-3-6:2014 © IEC 2014
SOMMAIRE
AVANT - PRO PO S . 20
1 Domaine d'application . 22
2 Références normatives . 22
3 Termes et définitions . 22
4 Exigences générales . 22
5 Conditions générales des essais . 23
6 Rayonnement, toxicité et dangers analogues . 23
7 Class ific ation . 23
8 Marquage et instructions . 23
9 Protection contre l'accès aux parties sous tension . 25
10 Démarrage . 25
11 Puissance et courant . 25
12 Ec ha uf f em ents . 25
13 Résistance à la chaleur et au feu . 25
14 Résistance à l'humidité . 25
15 Protection contre la rouille . 26
16 Protection contre la surcharge des transformateurs et des circuits associés . 26
17 Endurance . 26
18 Fonctionnement anormal . 26
19 Dangers mécaniques . 26
20 Résistance mécanique . 28
21 Construction . 28
22 Conducteurs in ter n es . 28
23 Composants . 28
24 Raccordement au réseau et câbles souples extérieurs . 28
25 Bornes pour conducteurs externes . 28
26 Disposition en vue de la mise à la terre . 28
27 Vis et connexions . 29
28 Lignes de fuite, distances dans l'air et distances à travers l'isolation . 29
Annexes . 32
Annexe I (informative) Mesure des émissions de vibrations et de bruit . 32
Annexe K (normative) Outils de batterie et blocs-batteries . 34
B i b l i o gr a p h i e . 35
Figure 101 – Exemple de foret diamanté avec système liquide . 30
Figure 102 – Configuration d'essai pour vérifier l'efficacité de l'appareil de collecte de
l i q u i de . 31
Tableau 4 – Niveaux de performances requis . 26
Tableau I.101 – Conditions d'essai pour le bruit et les vibrations . 32
Tableau I.102 – Formulation du béton (par mètre cube) . 33
Tableau I.103 – Profondeur des trous pour l'essai . 33
– 20 – IEC 62841-3-6:2014 © IEC 2014
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
OUTILS ÉLECTROPORTATIFS À MOTEUR, OUTILS PORTABLES
ET MACHINES POUR JARDINS ET PELOUSES –
SÉCURITÉ –
Partie 3-6: Exigences particulières pour les forets
diamantés transportables avec système liquide
AVANT-PROPOS
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IEC 62841-3-6 ®
Edition 1.1 2022-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-6: Particular requirements for transportable diamond drills with liquid
system
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-6: Exigences particulières pour les forets diamantés transportables
avec système liquide
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IEC 62841-3-6 ®
Edition 1.1 2022-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-6: Particular requirements for transportable diamond drills with liquid
system
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-6: Exigences particulières pour les forets diamantés transportables
avec système liquide
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-5396-0
IEC 62841-3-6 ®
Edition 1.1 2022-05
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 3-6: Particular requirements for transportable diamond drills with liquid
system
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 3-6: Exigences particulières pour les forets diamantés transportables
avec système liquide
– 2 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 7
5 General conditions for the tests . 7
6 Radiation, toxicity and similar hazards . 7
7 Classification . 7
8 Marking and instructions . 7
9 Protection against access to live parts . 9
10 Starting . 9
11 Input and current . 9
12 Heating . 9
13 Resistance to heat and fire . 9
14 Moisture resistance . 10
15 Resistance to rusting . 13
16 Overload protection of transformers and associated circuits . 13
17 Endurance . 13
18 Abnormal operation . 13
19 Mechanical hazards . 13
20 Mechanical strength . 14
21 Construction . 14
22 Internal wiring . 15
23 Components . 15
24 Supply connection and external flexible cords . 15
25 Terminals for external conductors . 16
26 Provision for earthing . 16
27 Screws and connections . 16
28 Creepage distances, clearances and distances through insulation . 16
Annexes . 19
Annex C (normative) Leakage current . 19
Annex I (informative) Measurement of noise and vibration emissions . 19
Annex K (normative) Battery tools and battery packs . 22
Bibliography . 23
Figure 101 – Example of a diamond drill with liquid system . 17
Figure 102 – Test arrangement to check efficiency of the liquid collection device . 18
Table 4 – Required performance levels . 13
Table 8 – Minimum cross-sectional area and AWG sizes of supply cords . 16
Table I.101 – Test conditions for noise and vibration . 20
Table I.102 – Concrete formulation (per cubic metre) . 20
© IEC 2022
Table I.103 – Depth of holes for the test . 21
– 4 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 3-6: Particular requirements for transportable
diamond drills with liquid system
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
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patent rights. 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 62841-3-6 edition 1.1 contains the first edition (2014-05) [documents 116/165/FDIS
and 116/179/RVD], its corrigendum (2015-05) and its amendment 1 (2022-05) [documents
116/575/FDIS and 116/583/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.
© IEC 2022
This part of International Standard IEC 62841 has been prepared by technical committee 116:
Safety of motor-operated electric tools.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 3-6 is to be used in conjunction with IEC 62841-1:2014.
This Part 3-6 supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC Standard: Particular requirements for transportable diamond drills with
liquid system.
Where a particular subclause of Part 1 is not mentioned in this Part 3-6, that subclause
applies as far as is reasonable. 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 the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under 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 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.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY –
SAFETY –
Part 3-6: Particular requirements for transportable
diamond drills with liquid system
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 AC or DC tools, and 480 V for
three-phase AC tools.
Addition:
This part of IEC 62841 document applies to transportable diamond drills, intended to be
connected to a liquid system. Liquid system may can include liquid from a pipe or
container.
2 Normative references
This clause of Part 1 is applicable, except as follows.
Replacement:
IEC 61540:1997 , Electrical accessories − Portable residual current devices without integral
overcurrent protection for household and similar use (PRCDs)
IEC 61540:1997/AMD1:1998
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
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
—————————
There exists a consolidated edition 1.1:1999 which includes IEC 61540:1997 and its Amendment 1:1998.
There exists a consolidated edition 3.2:2013 which includes IEC 61008-1:2010 and its Amendment 1:2012 and
Amendment 2:2013.
© IEC 2022
Addition:
3.101
diamond drill
manually fed tool with liquid system designed to drill stone and concrete by means of diamond
core bits. The tool at least consists of a drill unit and a drill stand to which it is fixed. The
drill stand is either attached to the workpiece to be drilled by means of fasteners, vacuum or
other suitable devices (see Figure 101) or the drill stand is secured to an appropriate support
such as a scaffolding
3.102
drill unit
device consisting of a motor and a fitting for the drill bit
3.103
drill stand
device for supporting the drill unit in its operating position
3.104
liquid collection device
device to collect liquid and slurry when drilling
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:
An auxiliary handle, if provided, and the drill stand are regarded as needed for normal use.
6 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.
7 Classification
This clause of Part 1 is applicable.
8 Marking and instructions
This clause of Part 1 is applicable except as follows:
8.1 Addition:
Diamond drills shall be marked with:
– rated no-load speed.
– 8 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
8.3 Replacement of the sixth dash:
– ">25 kg" on each separable unit with a mass above 25 kg, in accordance with
8.14.2 a) 102).
Replace the existing text of 8.14.2 a), item 102), with the following new text:
102) Instruction to and information about how to mount the drill unit to the drill stand, if
separable;
8.14.1.1 Addition:
101) Diamond drill safety warnings
a) When performing drilling that requires the use of water, route the water away from
the operator’s work area or use a liquid collection device. Such precautionary
measures keep the operator’s work area dry and reduce the risk of electrical shock.
b) Operate power tool by insulated grasping surfaces, when performing an operation
where the cutting accessory may contact hidden wiring or its own cord. Cutting
accessory contacting a “live” wire may make exposed metal parts of the power tool “live”
and could give the operator an electric shock.
c) Wear hearing protection when diamond drilling. Exposure to noise can cause hearing
loss.
d) When the bit is jammed, stop applying downward pressure and turn off the tool.
Investigate and take corrective actions to eliminate the cause of the bit jamming.
e) When restarting a diamond drill in the workpiece check that the bit rotates freely
before starting. If the bit is jammed, it may not start, may overload the tool, or may cause
the diamond drill to release from the workpiece.
f) When securing the drill stand with anchors and fasteners to the workpiece, ensure
that the anchoring used is capable of holding and restraining the machine during
use. If the workpiece is weak or porous, the anchor may pull out causing the drill stand to
release from the workpiece.
g) When securing the drill stand with a vacuum pad to the workpiece, install the pad on
a smooth, clean, non-porous surface. Do not secure to laminated surfaces such as
tiles and composite coating. If the workpiece is not smooth, flat or well affixed, the pad
may pull away from the workpiece.
NOTE The above warning applies only if the tool is intended to be used with a vacuum pad.
h) Ensure there is sufficient vacuum before and during drilling. If the vacuum is
insufficient, the pad may release from the workpiece.
NOTE The above warning applies only if the tool is intended to be used with a vacuum pad
i) Never perform drilling with the machine secured by the vacuum pad only, except
when drilling downwards. If the vacuum is lost, the pad will release from the workpiece.
NOTE The above warning applies only if the tool is intended to be used with a vacuum pad.
j) When drilling through walls or ceilings, ensure to protect persons and the work area
on the other side. The bit may extend through the hole or the core may fall out on the
other side.
k) Do not use this tool for overhead drilling with water supply. Water entering the power
tool will increase the risk of electric shock.
NOTE The above warning is only needed for tools that cannot be used for drilling overhead.
l) When drilling overhead, always use the liquid collection device specified in the
instructions. Do not allow water to flow into the tool. Water entering the power tool
will increase the risk of electric shock.
NOTE The above warning is only needed for tools that can be used for drilling overhead.
© IEC 2022
8.14.2 a) Addition:
101) Information about which diamond core bits can be used with the machine;
102) Instruction to and information about how to mount the tool to the drill stand;
103) Information about how to install the diamond core bit to the tool and, if applicable,
information about diamond core bit assembly;
104) Instruction to and information about how to anchor the drill stand in all applicable
positions;
105) For tools using vacuum fixing devices:
– Instruction to and information about how to check the surface where the drill stand
shall be fixed;
– Instruction to additionally secure the drill stand when drilling in orientations other
than vertically down, by using appropriate accessories or means and information
how to achieve this;
– Information regarding minimum vacuum level necessary for safe operation and how
to control it during the drilling operation;
– Information regarding the maximum core bit diameter suitable for use with vacuum
fixing;
106) For tools that can be used for drilling overhead with a liquid collection device:
– Information about the minimum and maximum diamond core bit diameter that can
be used with the liquid collection device.
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.
– 10 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
14 Moisture resistance
This clause of Part 1 is applicable except as follows:
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, except
those fulfilling the test of 21.22.
The tool is prepared with approximately 1,0 % NaCl solution in the following modes if
applicable:
– as described in 8.14.2;
– the liquid container of the tool is completely filled, and a further quantity, equal to 15 % of
the capacity of the container, or 0,25 l, whichever is the greater, is poured in steadily over
+0
a period of 60 s, while the tool is resting in its filling position in accordance with
−10
8.14.2 d);
– a detachable liquid container is filled completely and mounted and dismounted 10 times on
the tool.
In each applicable preparation, the tool is operated at rated voltage in each position
consistent with the instructions according to 8.14.2 b) for 1 min while monitoring the leakage
current as in Clause C.3.
For 3-phase diamond drills with a rated input exceeding 3 700 W, during the test the
leakage current shall not exceed:
– 5 mA for a, b and c in Figure C.2 in the closed position;
– 10 mA for the test repeated with each of the switches a, b, c in Figure C.2 open in turn,
the other two switches being closed.
For all other diamond drills, during the test the leakage current shall not exceed:
– 2 mA for a class II tool;
– 5 mA for a class I tool.
Following this test, the tool shall meet the electric strength test of Clause D.2 between live
parts and accessible parts after being allowed to dry for 24 h at ambient temperature.
14.3.101 Diamond drills which are intended to be used for drilling overhead in accordance
with 8.14.2 a) 104) and using a liquid collection device shall prevent electric shock due to
excessive liquid spillage.
Compliance is checked by the following test.
The drill unit runs vertically upwards at rated voltage under no-load condition with the liquid
collection device installed. If the liquid collection device is designed to be connected to a
liquid vacuum device, then such a device shall be attached. The test is conducted twice, the
© IEC 2022
drill being fitted once with the minimum and once with the maximum diameter of the diamond
core bit as specified for the liquid collection device in accordance with 8.14.2 a) 106).
The test arrangement is shown in Figure 102.
The liquid flow of approximately 1,0 % NaCl solution shall be in the range of 1 l/min
to 1,5 l/min. The running time shall be 15 min. The measuring time starts when the core bit is
filled with liquid.
During the test, the leakage current as in Clause C.3 is monitored.
For 3-phase diamond drills with a rated input exceeding 3 700 W, during the test the
leakage current shall not exceed:
– 5 mA for a, b and c in Figure C.2 in the closed position;
– 10 mA for the test repeated with each of the switches a, b, c in Figure C.2 open in turn,
the other two switches being closed.
For all other diamond drills, during the test the leakage current shall not exceed:
– 2 mA for a class II tool;
– 5 mA for a class I tool.
Following this test, the tool shall meet the electric strength test of Clause D.2 between live
parts and accessible parts after being allowed to dry for 24 h at ambient temperature.
14.4 Replacement:
Liquid systems shall not subject the user to an increased risk of electrical shock by
components not capable of withstanding the pressure during operation.
Compliance is checked by the following test.
The residual current device, if any, shall be disabled during the test.
The liquid system is closed and an approximately 1,0 % NaCl solution at a hydrostatic
pressure equal to twice the pressure stated in 8.14.2 d) 1) is applied for 1 h.
The tool is then placed for 1 min in all positions consistent with the instructions in accordance
with 8.14.2 b) while monitoring the leakage current as in Clause C.2.
For 3-phase diamond drills with a rated input exceeding 3 700 W, during the test the
leakage current shall not exceed:
– 5 mA for a, b and c in Figure C.2 in the closed position;
– 10 mA for the test repeated with each of the switches a, b, c in Figure C.2 open in turn,
the other two switches being closed.
For all other diamond drills, during the test the leakage current shall not exceed:
– 2 mA for a class II tool;
– 5 mA for a class I tool.
Following this test, the tool shall meet the electric strength test of Clause D.2 between live
parts and accessible parts after being allowed to dry for 24 h at ambient temperature.
14.5 Replacement:
– 12 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
Residual current devices used to provide protection from shock in the case of failure of the
liquid system shall comply with
– IEC 61540:1997; or
– alternatively for 3-phase tools, IEC 61008-1:2010
and shall meet the following requirements a) to c):
a) The RCD shall disconnect all mains conductors, but not the earth conductor if provided,
when the leakage exceeds
– 10 mA and with a maximum response of 300 ms; or
– alternatively for 3-phase tools, 30 mA with a maximum response time of 300 ms.
NOTE 1 For 3-phase tools, the values are based on specified levels in IEC 61008-1:2010.
Compliance is checked by inspection and by the test of
– IEC 61540:1997,9.9.2 for single phase tools; or
– alternatively, IEC 61008-1:2010, 9.9.2 and IEC 61008-1/AMD2:2013, 9.9.2 for 3-phase
tools.
In addition, during the test, the earthing conductor shall not become disconnected.
b) The RCD shall be reliable for its intended use.
Compliance is checked at rated voltage by operating the residual current device under
conditions of simulated leakage as in a) above during conditions of locked rotor of the tool
for 50 cycles. The residual current device shall operate correctly for all cycles.
c) The RCD shall be installed such that it is unlikely to be removed during use or normal
maintenance.
This requirement is considered fulfilled if the residual current device is fixed to the tool
or the supply cord connected to the tool.
Where fitted in the supply cord, the residual current device shall be provided with type
Y attachment or type Z attachment for connection with the supply cord and
interconnection cord.
Compliance is checked by inspection.
NOTE 2 In Canada, the following conditions apply:
Replacement of the first paragraph:
Residual current devices used to provide protection from shock in the case of failure of the liquid system shall
comply with
– IEC 61540:1997; or
– alternatively for 3-phase tools, IEC 61008-1:2010 up to 440 V; or
– alternatively for 3-phase tools, CSA C22.2 No. 144 above 440 V;
and shall meet the following requirements a) to c).
NOTE 3 In the United States of America, the following conditions apply:
Replacement of the first paragraph:
Residual current devices used to provide protection from shock in the case of failure of the liquid system shall
comply with
– IEC 61540:1997; or
– alternatively for 3-phase tools, IEC 61008-1:2010 up to 440 V; or
– alternatively for 3-phase tools, UL 1053 above 440 V;
and shall meet the following requirements a) to c).
© IEC 2022
15 Resistance to rusting
This clause of Part 1 is applicable.
16 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
17 Endurance
This clause of Part 1 is applicable except as follows:
17.2 Replacement of the fifth paragraph:
Diamond drills are operated for 12 h at a voltage equal to 1,1 times rated voltage or the
upper limit of the rated voltage range, and then for 12 h at a supply voltage equal to 0,9 times
rated voltage or the lower limit of the rated voltage range. The 12 h of operation need not be
continuous. During the test, the tool is placed in three different positions, the operating time,
at each test voltage, being approximately 4 h for each position.
18 Abnormal operation
This clause of Part 1 is applicable except as follows:
18.8 Table 4 Replacement of Table 4:
Table 4 – Required performance levels
Type and purpose of SCF Minimum Performance
Level (PL)
Power switch – prevent unwanted switch-on a
Power switch – provide desired switch-off b
Provide desired direction of rotation Not an SCF
Any electronic control to pass the test of 18.3 a
Overspeed prevention to prevent output speed above 130 % of a
rated (no-load) speed
Prevent exceeding thermal limits as in Clause 18.4 and 18.5.3 a
Limiting device to comply with 19.103 c
19 Mechanical hazards
This clause of Part 1 is applicable except as follows:
19.1 Addition:
Rotating elements such as clutches, spindles, extensions, etc., except core bits, shall be:
– without projecting parts and be of round or hexagonal shape;
Compliance is checked by inspection.
or
– protected with a fixed or self-adjusting guard.
– 14 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
Compliance is checked by applying test probe B of IEC 61032:1997 with a force not
exceeding 5 N to any guard fitted. It shall not be possible to contact rotating elements with
the test probe.
19.6 This subclause of Part 1 is not applicable.
19.7 This subclause of Part 1 is not applicable.
19.8 This subclause of Part 1 is not applicable.
19.101 Diamond drills shall be provided with a drill stand and a drill unit.
The drill stand shall have provisions for mounting the drill stand to the workpiece to be
drilled or to an appropriate support.
The drill unit shall have provisions for attaching it to the drill stand in all working positions.
The machine shall be so designed that unintentional loosening of the drill unit from the drill
stand is prevented.
Compliance is checked by inspection.
19.102 Vacuum devices for fixing the diamond drill shall be provided with a means that
informs the user of the actual vacuum.
Compliance is checked by inspection.
19.103 Vacuum devices for fixing the diamond drill shall be able to withstand the forces
during the drilling process including the situation of a jammed drill bit.
Compliance is checked by the following test which simulates the bit becoming jammed in the
work piece.
The diamond drill shall be fixed with the vacuum device to a 12 mm steel plate. The vacuum
shall be adjusted to the minimum level specified in accordance with 8.14.2 a) 105).The output
spindle of the diamond drill is coupled to a stalling device. If the tool is equipped with a gear
selection, the gear resulting in the highest torque shall be chosen. If the tool is equipped with
an adjustable clutch, this shall be adjusted to the highest torque setting. The tool shall come
to full speed and then stopped by the stalling device within 45° to 90° of spindle rotation. The
stall is maintained for 3 s. Following this test, the tool is maintained in the stalled position and
the power switch is then operated on and off 3 times.
During the test, the operator(s) shall be outside the radius of the tool in case the vacuum
system comes loose.
During the test, the drill stand shall not come loose and shall not rotate by more than 10°.
20 Mechanical strength
This clause of Part 1 is applicable except as follows:
20.5 This subclause of Part 1 is not applicable.
21 Construction
This clause of Part 1 is applicable except as follows:
© IEC 2022
21.15 Replacement:
Tools employing liquid systems shall be either:
– of class III construction; or
– of class I or class II construction and be provided with a residual current device and
comply with 14.3, 14.4 and 14.5; or
– of class I or class II construction and be designed for use in combination with an
isolating transformer and comply with 14.3 and 14.4; or
– a class I tool that fulfils the requirements of at least IPX3 in accordance with IEC 60529:
1989, IEC 60529, AMD1:1999, IEC 60529, AMD2:2013 when it is operating and fulfils the
requirements of at least IPX5 in accordance with IEC 60529:1989, IEC 60529,
AMD1:1999, IEC 60529, AMD2:2013 when it is not operating. The enclosure shall not be
required to be opened during operation or user maintenance in accordance with 8.14.2.
Compliance is checked by inspection.
21.18.2.1 This subclause of Part 1 is not applicable.
21.30 Replacement:
If handles or grasping surfaces as specified in the instruction manual are provided for manual
feeding, they shall be insulated between the grasping areas used in normal use and the
accessible parts that become live due to contact with the output shaft.
Compliance is checked by inspection and a test in accordance with 20.3.2 on the handles and
grasping surfaces, followed by an electric strength test in accordance with Clause D.2 using
1 250 V a.c. between the handles and grasping surfaces in contact with foil and the output
shaft of the tool.
21.35 This subclause of Part 1 is not applicable.
22 Internal wiring
This clause of Part 1 is applicable.
23 Components
This clause of Part 1 is applicable, except as follows.
23.3 This subclause of Part 1 is not applicable.
24 Supply connection and external flexible cords
This clause of Part 1 is applicable except as follows:
24.4 Replacement of the first paragraph:
Supply cords shall be not lighter than heavy polychloroprene sheathed flexible cable (code
designation 60245 IEC 66) or equivalent.
24.5 Replacement of Table 8:
– 16 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
Table 8 – Minimum cross-sectional area and AWG sizes of supply cords
a
Rated current of the tool Nominal cross-sectional area AWG size
A mm
Up to and including 6 0,75
Over 6 up to and including 10 1
Over 10 up to and including 12 17
Over 12 up to and including 13 1,5 16
Over 13 up to and including 16
Over 16 up to and including 18
2,5
Over 18 up to and including 25 12
Over 25 up to and including 32 4 10
Over 32 up to and including 40 6 8
Over 40 up to and including 63 10 4
a
AWG stands for American Wire Gauge as defined in ASTM B 258-02.
25 Terminals for external conductors
This clause of Part 1 is applicable.
26 Provision for earthing
This clause of Part 1 is applicable.
27 Screws and connections
This clause of Part 1 is applicable.
28 Creepage distances, clearances and distances through insulation
This clause of Part 1 is applicable, except as follows.
28.1 Replacement of the first paragraph:
Creepage distances and clearances shall not be less than the values in millimetres shown in
Table 12. The values specified in the table do not apply to cross-over points of motor
windings. For working voltages greater than 480 V, the requirements of IEC 60664-1 are
applicable.
© IEC 2022
IEC 1229/14
Key
1 drill stand
2 drill unit
3 diamond core bit
4 headstock spindle to move the drill unit up and down
5 liquid system
6 RCD (residual current device), if any
Figure 101 – Example of a diamond drill with liquid system
– 18 – IEC 62841-3-6:2014+AMD1:2022 CSV
© IEC 2022
IEC 1230/14
Key
1 drill stand fixed with bolts
2 liquid collection device
3 connection to liquid aspirator
4 liquid outlet hose
5 adapter for wet vacuum cleaner
6 RCD (Residual Current Device), if any
7 supply cord
8 vacuum cleaner for wet operations
9 liquid supply with three way outlet valve
Figure 102 – Test arrangement to check efficiency of the liquid collection device
© IEC 2022
Annexes
The annexes of Part 1 are applicable except as follows.
Annex C
(normative)
Leakage current
This annex of Part 1 is applicable, except as follows.
C.1 General
Replacement of the last paragraph:
The leakage current to accessible metal parts and metal foil shall not exceed the following
values, unless otherwise specified in the relevant clause of this document:
For 3-phase class I tools with a rated input exceeding 3 700 W:
– 5 mA;
For all other diamond drills
– for class I tools 0,75 mA;
– for class II tools 0,25 mA.
Annex I
(informative)
Measurement of noise and vibration emissions
I.2 Noise test code (grade 2)
This clause of Part 1 is applicable except as follows:
I.2.4 Installation and mounting conditions of the power tools during noise tests
Replacement:
Diamond drills are installed and mounted as specified under “Test set-up” in Table I.101.
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