IEC 60730-1:2022

IEC 60730-1
®

Edition 6.0 2022-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


Automatic electrical controls –
Part 1: General requirements

Dispositifs de commande électrique automatiques –
Partie 1: Exigences générales

IEC 60730-1:2022-09(en-fr)

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IEC 60730-1
®

Edition 6.0 2022-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Automatic electrical controls –
Part 1: General requirements
Dispositifs de commande électrique automatiques –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.120 ISBN 978-2-8322-5387-8
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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– 2 – IEC 60730-1:2022 © IEC 2022
CONTENTS
FOREWORD . 10
1 Scope . 14
2 Normative references . 15
3 Terms and definitions . 19
3.1 Definitions relating to ratings, voltages, currents, frequencies, and wattages . 19
3.2 Definitions of types of control according to purpose . 21
3.3 Definitions relating to the function of controls . 24
3.4 Definitions relating to disconnection and interruption . 27
3.5 Definitions of types of control according to construction . 28
3.6 Definitions of type of automatic action of a control . 29
3.7 Definitions relating to protection against electric shock and type of insulation . 30
3.8 Definitions relating to component parts of controls . 34
3.9 Definitions of types of terminals and terminations of controls . 35
3.10 Definitions relating to the connections to controls . 37
3.11 Definitions relating to the performance of type 2 actions . 38
3.12 Definitions relating to the requirements for creepage distances and
clearances . 38
3.13 Miscellaneous definitions . 39
3.14 Definitions relating to manufacturer and user . 41
3.15 Definitions pertaining to thermistors . 41
3.16 Definitions relating to the structure of controls using software . 41
3.17 Definitions relating to error avoidance in controls using software . 41
3.18 Definitions relating to fault/error control techniques for controls using
software . 41
3.19 Definitions relating to memory tests for controls using software . 41
3.20 Definitions of software terminology – General . 41
3.21 Definitions relating to classes of control functions . 41
3.22 Definitions relating to functional safety . 41
3.23 Definitions related to access to data exchange . 42
3.24 Definitions related to EMC performance . 42
4 General . 44
4.1 General structure of the document . 44
4.2 General requirements . 45
4.3 General notes on tests . 45
5 Required technical information . 49
5.1 General requirements . 49
5.2 Methods of providing technical information . 49
5.3 Class II symbol . 57
5.4 Additional requirements for marking . 57
5.5 Warning or cautionary markings . 59
6 Protection against electric shock . 59
6.1 General requirements . 59
6.2 Actuating members and actuating means . 61
6.3 Capacitors . 62
6.4 Covers and uninsulated live or hazardous parts . 62

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IEC 60730-1:2022 © IEC 2022 – 3 –
6.5 Battery operated controls provided with a user accessible mains supply input
connector . 62
7 Provision for protective earthing . 63
7.1 Class 0I and Class I controls . 63
7.2 Class II and class III controls . 63
7.3 Adequacy of earth connections . 63
7.4 Corrosion resistance . 64
7.5 Other requirements . 65
7.6 Protective equipotential bonding . 65
8 Terminals and terminations . 65
8.1 Terminals and terminations for external copper conductors . 65
8.2 Terminals and terminations for internal conductors . 70
8.3 Terminals and terminations for integrated conductors . 72
9 Constructional requirements . 72
9.1 Materials . 72
9.2 Protection against electric shock . 72
9.3 Actuation and operation . 75
9.4 Actions . 78
9.5 Openings in enclosures . 80
9.6 Mounting of controls . 80
9.7 Attachment of cords . 82
9.8 Size of cords – non-detachable . 83
9.9 Inlet openings . 83
9.10 Equipment inlets and socket-outlets . 84
9.11 Requirements during mounting, use, maintenance and servicing. 85
9.12 Controls using software . 87
9.13 Protective controls and components of protective control systems . 90
10 Threaded parts and connections . 92
10.1 Threaded parts moved during mounting or servicing . 92
10.2 Current-carrying connections and connections providing protective earthing
continuity . 94
11 Creepage distances, clearances and distances through solid insulation . 95
11.1 General . 95
11.2 Clearances . 96
11.3 Creepage distances . 100
11.4 Solid insulation . 104
12 Components . 105
12.1 Transformers . 105
12.2 Switch mode power supplies and converters . 105
12.3 Capacitors . 106
12.4 Fuses. 106
12.5 Varistors . 106
12.6 Thermistors . 106
12.7 Relays . 107
12.8 Other components . 107
13 Fault assessment on electronic circuits. 107
13.1 Fault assessment for inherent safety . 107
13.2 Fault assessment to ensure functional safety . 113

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– 4 – IEC 60730-1:2022 © IEC 2022
14 Moisture and dust resistance . 113
14.1 Protection against ingress of water and dust . 113
14.2 Protection against humid conditions . 114
14.3 Touch current test for in-line cord controls and free-standing controls . 115
15 Electric strength and insulation resistance . 116
15.1 Insulation resistance . 116
15.2 Electric strength . 116
15.3 Additional tests for in-line cord and free-standing controls . 118
16 Heating . 119
17 Manufacturing deviation and drift . 123
18 Environmental stress . 123
18.1 Transportation and storage . 123
18.2 Environmental stress of temperature . 123
19 Endurance . 124
19.1 General requirements . 124
19.2 Electrical conditions for the tests . 125
19.3 Thermal conditions for the tests . 131
19.4 Manual and mechanical conditions for the tests . 131
19.5 Dielectric strength requirements . 132
19.6 Ageing test . 132
19.7 Overvoltage test or overload test in all countries using an overload test of
automatic action at accelerated rate . 132
19.8 Test of automatic action at accelerated rate . 133
19.9 Test of automatic action at slow rate . 133
19.10 Overvoltage test or overload test in all countries that use the overload test of
manual action at accelerated speed . 134
19.11 Test of manual action at slow speed . 134
19.12 Test of manual action at high speed which has multiple poles, and where
polarity reversal occurs during the action . 134
19.13 Test of manual action at accelerated speed . 134
19.14 Evaluation of compliance . 135
19.15 Test for particular purpose controls . 135
20 Mechanical strength . 135
20.1 General requirements . 135
20.2 Impact resistance . 136
20.3 Free-standing controls . 137
20.4 In-line cord controls . 137
20.5 Pull-cord actuated controls . 137
20.6 Foot actuated controls . 138
20.7 Actuating member and actuating means . 138
20.8 Flexing – test . 139
20.9 Cord anchorages – test . 139
21 Resistance to heat, fire and tracking . 140
21.1 General requirements . 140
21.2 Integrated, incorporated and in-line cord controls . 140
21.3 Independently mounted, free-standing controls . 141
22 Resistance to corrosion . 142
22.1 Resistance to rusting . 142

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IEC 60730-1:2022 © IEC 2022 – 5 –
23 Electromagnetic compatibility (EMC) requirements – Emission . 142
23.1 General requirement . 142
23.2 High frequency emission . 143
23.3 Low frequency emission . 146
24 Normal operation . 146
25 Electromagnetic compatibility (EMC) requirements – Immunity . 146
25.1 General . 146
25.2 EMC test plan and report . 147
25.3 Immunity requirements . 149
25.4 Performance criteria . 152
25.5 Surge immunity test . 153
25.6 Electrical fast transient immunity test . 153
25.7 Radio-frequency electromagnetic field immunity. 154
25.8 Electrostatic discharge . 154
25.9 Immunity to power-frequency magnetic fields . 154
25.10 Test of the influence of voltage dips and voltage interruption in the power
supply network . 154
26 Abnormal operation tests . 155
26.1 Abnormal temperature test . 155
26.2 Overload tests . 156
26.3 Battery short-circuit test . 157
Annex A (normative) Indelibility of markings. 174
Annex B (normative) Measurement of creepage distances and clearances in air . 176
Annex C (informative) Nominal voltages of supply systems for different modes of
overvoltage control . 180
Annex D (normative) Overvoltage categories . 182
Annex E (informative) Typical usage of controls and related overvoltage categories . 183
Annex F (normative) Pollution degrees . 184
F.1 Pollution . 184
F.2 Degrees of pollution in the micro-environment . 184
Annex G (normative) Resistance to heat, fire and tracking tests . 185
G.1 Glow-wire test . 185
G.2 Proof tracking test . 185
G.3 Ball pressure test . 185
Annex H (normative) Requirements related to functional safety . 187
H.3 Terms and definitions . 187
H.5 Information . 198
H.9 Constructional requirements . 199
H.13 Fault assessment on electronic circuits . 216
H.17 Manufacturing deviation and drift . 220
H.19 Endurance . 221
H.25 Electromagnetic compatibility (EMC) requirements – Immunity . 222
Annex I (normative) Requirements for certain types of DC supplied controls . 235
I.1 Scope . 235
Annex J (normative) Requirements for thermistor elements and controls using
thermistors . 237
J.1 Scope . 237
Annex K (normative) Circuit for measuring touch current . 254

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– 6 – IEC 60730-1:2022 © IEC 2022
Annex L (normative) Printed circuit board coating performance test . 255
Annex M (normative) Printed circuit board protection . 257
Annex N (informative) Explanatory notes for surge immunity test . 260
N.1 Different source impedances . 260
N.2 Application of the tests . 260
N.3 Installation classification . 261
Annex O (informative) Guidance for applying Clause 11 . 264
Annex P (normative) Requirements for SELV and PELV . 267
P.1 Overview of the requirements for SELV and PELV . 267
P.2 Protection against electric shock by SELV system or PELV system . 267
P.3 Protective measures for SELV system and PELV system . 268
Annex Q (informative) Regional differences relevant for the member countries of
Cenelec . 270
Annex R (informative) National differences relevant in the United States of America . 274
R.2 Normative references . 274
Annex S (informative) National differences r
...