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IEC 60335-2-72
Edition 5.0 2021-07
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-72: Particular requirements for floor treatment machines with or without
traction drive, for commercial use
your local IEC member National Committee for further information.
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IEC 60335-2-72
Edition 5.0 2021-07
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-72: Particular requirements for floor treatment machines with or without
traction drive, for commercial use
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.080 ISBN 978-2-8322-9995-1
– 2 – IEC 60335-2-72:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
4 General requirement . 14
5 General conditions for the tests . 14
6 Classification . 15
7 Marking and instructions . 15
8 Protection against access to live parts . 19
9 Starting of motor-operated appliances . 21
10 Power input and current . 21
11 Heating . 21
12 Charging of metal-ion batteries . 21
13 Leakage current and electric strength at operating temperature . 21
14 Transient overvoltages . 22
15 Moisture resistance . 22
16 Leakage current and electric strength . 23
17 Overload protection of transformers and associated circuits . 24
18 Endurance . 24
19 Abnormal operation . 24
20 Stability and mechanical hazards . 25
21 Mechanical strength . 30
22 Construction . 32
23 Internal wiring . 36
24 Components . 37
25 Supply connection and external flexible cords . 38
26 Terminals for external conductors . 39
27 Provision for earthing . 39
28 Screws and connections . 39
29 Clearances, creepage distances and solid insulation . 39
30 Resistance to heat and fire . 40
31 Resistance to rusting . 40
32 Radiation, toxicity and similar hazards . 40
Annexes . 46
Annex A (informative) Routine tests . 47
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 48
Annex L (informative) Guidance for the measurement of clearances and creepage
distances . 53
Annex AA (normative) Precast paving slabs . 54
Annex BB (normative) Requirements for internal combustion engine powered
machines using liquefied petroleum gas (LPG) . 55
Annex CC (normative) Falling-object protective structures (FOPS) – Dynamic test and
performance requirements . 58
Annex DD (informative) Emission of acoustical noise . 61
Annex EE (informative) Emission of vibration . 64
Bibliography . 65
Index of defined terms . 67
Figure 101 – Impact test apparatus . 41
Figure 102 – Apparatus for testing the abrasion resistance of current-carrying hoses . 42
Figure 103 – Apparatus for testing the resistance to flexing of current-carrying hoses . 43
Figure 104 – Configuration of the hose for the freezing treatment . 43
Figure 105 – Flexing positions for the hose after removal from the freezing cabinet . 44
Figure 106 – Warning symbol: Do not inhale exhaust fumes . 44
Figure 107 – Circuit for testing battery chargers (taken from IEC 60335-2-29) . 45
Figure CC.1 – Satisfactory protection by the overhead guard . 59
Figure CC.2 – Admissible deformation when the overhead guard is supported at all
sides . 60
Figure CC.3 – Admissible deformation when the overhead guard is supported at one
side . 60
Table 101 – Machine classification . 15
Table 12 – Pull force and torque . 39
Table DD.1 – Determination of uncertainty . 63
– 4 – IEC 60335-2-72:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-72: Particular requirements for floor treatment machines
with or without traction drive, for commercial use
FOREWORD
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IEC 60335-2-72 has been prepared by subcommittee
...