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IEC 62841-2-3
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-3: Particular requirements for hand-held grinders, disc-type polishers and
disc-type sanders
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 2-3: Exigences particulières pour les meuleuses portatives et pour les
lustreuses et ponceuses portatives du type à disque
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IEC 62841-2-3
Edition 1.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 2-3: Particular requirements for hand-held grinders, disc-type polishers and
disc-type sanders
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 2-3: Exigences particulières pour les meuleuses portatives et pour les
lustreuses et ponceuses portatives du type à disque
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.20 ISBN 978-2-8322-8100-0
– 2 – IEC 62841-2-3:2020 © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General requirements . 10
5 General conditions for the tests . 11
6 Radiation, toxicity and similar hazards . 11
7 Classification . 11
8 Marking and instructions . 11
9 Protection against access to live parts . 18
10 Starting . 18
11 Input and current . 18
12 Heating . 18
13 Resistance to heat and fire . 18
14 Moisture resistance . 18
15 Resistance to rusting . 18
16 Overload protection of transformers and associated circuits . 19
17 Endurance . 19
18 Abnormal operation . 19
19 Mechanical hazards . 19
20 Mechanical strength . 27
21 Construction . 37
22 Internal wiring . 41
23 Components . 41
24 Supply connection and external flexible cords . 41
25 Terminals for external conductors . 41
26 Provision for earthing . 41
27 Screws and connections . 41
28 Creepage distances, clearances and distances through insulation . 41
Annexes . 42
Annex I (informative) Measurement of noise and vibration emissions . 42
Annex K (normative) Battery tools and battery packs . 51
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 54
Annex AA (normative) Wheel guard types . 55
Annex BB (informative) Material and thickness of wheel guards . 61
Annex CC (normative) Wheel type specifications . 62
Bibliography . 68
Figure 101 – Example of an angle grinder . 9
Figure 102 – Example of a straight grinder . 9
Figure 103 – Example of a vertical grinder . 10
Figure 104 – Examples of gaps and rake angles . 17
Figure 105 – Principal dimensions of flanges for wheels other than Type 4 . 24
Figure 106 – Principal dimensions of flanges for wheels type 4 . 24
Figure Z101 – Depressed centre of abrasive wheels . 25
Figure 107 – Wheel guard strength test: explanation of wheel guard positions . 29
Figure 108 – Wheel guard strength test: preparation of the grinder . 30
Figure 109 – Wheel guard strength test: preparation of cup wheel types 6 and 11 . 31
Figure 110 – Wheel guard strength test: angle grinders and vertical grinders without
side handles . 32
Figure 111 – Wheel guard strength test box . 33
Figure 112 – Wheel guard strength test: straight grinder with additional masses . 37
Figure 113 – Measurement of handle gripping length . 39
Figure 114 – Measurement of handle gripping length . 40
Figure 115 – Measurement of handle gripping length for a handle with finger grips or
similar superimposed profiles . 40
Figure I.101 – Positions of transducers for straight grinders . 42
Figure I.102 – Positions of transducers for angle grinders . 43
Figure I.103 – Positions of transducers for disc-type polishers and disc-type sanders . 43
Figure I.104 – Artificial grinding wheel for angle grinding and concrete grinding . 45
Figure I.105 – Working positions of operator and application of force . 46
Figure I.106 – Artificial grinding wheel for straight grinding . 48
Figure AA.1 – Design example for wheel guard of Type A (cut-off wheel guard) . 55
Figure AA.2 – Wheel guard of Type B (grinding wheel guard) . 56
Figure AA.3 – Wheel guard of Type C (combination wheel guard) . 57
Figure AA.4 – Adjustable wheel guard of Type D (cup wheel guard) . 57
Figure AA.5 – Wheel guard of Type E (diamond surface grinding wheel guard) . 58
Figure AA.6 – Wheel guard of Type F (masonry cut-off wheel guard) . 59
Figure AA.7 – Wheel guard of Type G (
...