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IEC 60335-1
Edition 6.0 2020-09
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 1: General requirements
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IEC 60335-1
Edition 6.0 2020-09
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.030 ISBN 978-2-8322-8600-5
– 2 – IEC 60335-1:2020 © IEC 2020
CONTENTS
FOREWORD. 6
INTRODUCTION . 9
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 16
4 General requirement . 28
5 General conditions for the tests . 28
6 Classification . 32
7 Marking and instructions . 32
8 Protection against access to live parts . 41
9 Starting of motor-operated appliances . 43
10 Power input and current . 43
11 Heating . 45
12 Charging of metal-ion batteries . 51
13 Leakage current and electric strength at operating temperature . 52
14 Transient overvoltages . 55
15 Moisture resistance . 55
16 Leakage current and electric strength. 58
17 Overload protection of transformers and associated circuits. 60
18 Endurance . 60
19 Abnormal operation . 60
20 Stability and mechanical hazards . 71
21 Mechanical strength . 72
22 Construction . 74
23 Internal wiring . 86
24 Components . 88
25 Supply connection and external flexible cords . 93
26 Terminals for external conductors . 101
27 Provision for earthing . 103
28 Screws and connections . 105
29 Clearances, creepage distances and solid insulation . 107
30 Resistance to heat and fire . 116
31 Resistance to rusting . 121
32 Radiation, toxicity and similar hazards . 121
Annex A (informative) Routine tests . 135
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 137
Annex C (normative) Ageing test on motors . 158
Annex D (normative) Thermal motor protectors . 159
Annex E (normative) Needle-flame test . 160
Annex F (normative) Capacitors . 161
Annex G (normative) Safety isolating transformers . 163
Annex H (normative) Switches . 164
Annex I (normative) Motors having basic insulation that is inadequate for the rated
voltage of the appliance . 166
Annex J (normative) Coated printed circuit boards . 168
Annex K (informative) Overvoltage categories . 169
Annex L (informative) Guidance for the measurement of clearances and creepage
distances . 170
Annex M (informative) Pollution degree . 173
Annex N (normative) Proof tracking test . 174
Annex O (informative) Selection and sequence of the tests of Clause 30 . 175
Annex P (informative) Guidance for the application of this standard to appliances used
in tropical climates . 180
Annex Q (informative) Sequence of tests for the evaluation of electronic circuits . 182
Annex R (normative) Software evaluation . 185
Annex S (informative) Guidance for the application of this standard on measurement of
power input and current based on the requirements of 10.1 and 10.2 concerning the
representative period . 199
Annex T (normative) UV-C radiation effect on non-metallic materials . 200
Annex U (normative) Appliances intended for remote communication through public
networks . 203
Bibliography . 207
Index of defined terms . 210
Figure 1 – Circuit diagram for leakage current measurement at operating temperature
for single-phase connection of class II appliances and for parts of class ll construction . 122
Figure 2 – Circuit diagram for leakage current measurement at operating temperature
for single-phase connection of other than class II appliances or parts of class ll
construction . 123
Figure 3 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral class II appliances and for parts of class ll construction . 124
Figure 4 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral appliances other than those of class II or parts of class ll
construction . 125
Figure 5 – Small part . 126
Figure 6 – Example of an electronic circuit with low-power points . 126
Figure 7 – Test finger nail . 127
Figure 8 – Flexing test apparatus . 128
Figure 9 – Constructions of cord anchorages . 129
Figure 10 – An example of parts of an earthing terminal . 130
Figure 11 – Examples of clearances . 131
Figure 12 – Example of the placement of the cylinder . 132
Figure 13 – Small parts cylinder . 133
Figure 14 – Example of a specified operating region of a lithium-ion cell during charging . 134
Figure B.1 – Examples of battery-operated appliance constructions and application of
normative Annex B . 155
– 4 – IEC 60335-1:2020 © IEC 2020
Figure B.2 – Examples of correct polarity connection marking representing three
batteries . 157
Figure I.1 – Simulation of faults . 167
Figure L.1 – Sequence for the determination of clearances . 170
Figure L.2 – Sequence for the determination of creepage distances . 171
Figure L.3 – Measurement of clearances . 172
Figure O.1 – Tests for resistance to heat . 175
Figure O.2 – Selection and sequence of tests for resistance to fire in hand-held
appliances . 176
Figure O.3 – Selection and sequence of tests for resistance to fire in attended
appliances . 176
Figure O.4 – Selection and sequence of tests for resistance to fire in un
...