IEC 60730-2-10:2026
(Main)Automatic electrical controls - Part 2-10: Particular requirements for motor-starting relays
General Information
- Abstract
IEC 60730-2-10:2026 applies to automatic electrical motor-starting relays
- intended to control the start windings of single phase motors;
- for use in, on, or in association with equipment for household appliance and similar use;
NOTE 1 Throughout this document, the word "equipment" means "appliance and equipment" and "control" means "motor-starting relays".
- intended for appliances within the scope of IEC 60335;
- for equipment that is used in building automation within the scope of ISO 16484 series and IEC 63044 series (HBES/BACS);
- for equipment that is used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications;
EXAMPLE 1 Controls for commercial catering, heating and air-conditioning equipment.
- used in, on, or in association with equipment that are smart enabled;
EXAMPLE 2 Smart grid control, remote interfaces/control of energy-consuming equipment.
- that are AC or DC powered with a rated voltage not exceeding 690 V AC or 600 V DC;
- used in, on, or in association with equipment that use electricity, gas, oil, solid fuel, solar thermal energy, etc., or a combination thereof;
- utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs;
- using NTC or PTC thermistors, requirements for which are contained in Annex J;
- that are mechanically or electrically operated, responsive to or controlling such characteristics as current and voltage, or combinations thereof;
EXAMPLE 3 Centrifugal motor-starting devices.
- as well as manual controls when such are electrically and/or mechanically integral with automatic controls.
NOTE 2 Requirements for manually actuated mechanical switches not forming part of an automatic control are contained in IEC 61058‑1‑1.
This document applies to
- the inherent safety of motor-starting control, and
- functional safety of motor-starting control and safety related systems (when required),
- controls where the performance (for example the effect of EMC phenomena) of the product can impair the overall safety and performance of the controlled system,
- the operating values, operating times, and operating sequences where such are associated with equipment safety,
- motor-starting controls incorporating electronic devices, thermistor elements, thermal elements or magnetic elements.
This document specifies the requirements for construction, operation and testing of automatic electrical motor-starting relays used in, on, or in association with an equipment.
This document does not
- apply to motor-starting relays designed exclusively for industrial process applications unless explicitly mentioned in the relevant equipment standard. However, this document can be applied to motor-start relays for equipment intended specifically for industrial applications in cases where no relevant safety standard exists;
- take into account the response value of an automatic action of a control, if such a response value is dependent upon the method of mounting the control in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer will apply;
- apply to general purpose relays or to contactors and motor starters of the type covered by IEC 60947 series;
apply to mechanically operated motor-starting devices
This part 2‑10 is intended to be used in conjunction with IEC 60730‑1. It was established on the basis of the sixth edition of that standard (2022). Consideration may be given to future editions of, or amendments to, IEC 60730‑1.
This part 2‑10 supplements or modifies the corresponding clauses in IEC 60730‑1, so as to convert that publication into the IEC standard: Particular requirements for motor-starting relays.
Where this part 2‑10 states "addition", "modification" or "replacement",
- Status
- Published
- Publication Date
- 11-Aug-2026
- Technical Committee
- TC 72 - Automatic electrical controls
- Drafting Committee
- WG 3 - TC 72/WG 3
- Current Stage
- PPUB - Publication issued
- Start Date
- 12-Aug-2026
- Completion Date
- 01-Sep-2026
Buy Documents
IEC 60730-2-10:2026 - Automatic electrical controls - Part 2-10: Particular requirements for motor-starting relays
IEC 60730-2-10:2026 EXV - Automatic electrical controls - Part 2-10: Particular requirements for motor-starting relays
IEC 60730-2-10:2026 - Dispositifs de commande électrique automatiques - Partie 2-10: Exigences particulières pour les relais de démarrage de moteur
Relations
- Effective Date
- 26-Oct-2025
Buy Documents
IEC 60730-2-10:2026 - Automatic electrical controls - Part 2-10: Particular requirements for motor-starting relays
IEC 60730-2-10:2026 EXV - Automatic electrical controls - Part 2-10: Particular requirements for motor-starting relays
IEC 60730-2-10:2026 - Dispositifs de commande électrique automatiques - Partie 2-10: Exigences particulières pour les relais de démarrage de moteur
Frequently Asked Questions
IEC 60730-2-10:2026 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Automatic electrical controls - Part 2-10: Particular requirements for motor-starting relays". This standard covers: IEC 60730-2-10:2026 applies to automatic electrical motor-starting relays - intended to control the start windings of single phase motors; - for use in, on, or in association with equipment for household appliance and similar use; NOTE 1 Throughout this document, the word "equipment" means "appliance and equipment" and "control" means "motor-starting relays". - intended for appliances within the scope of IEC 60335; - for equipment that is used in building automation within the scope of ISO 16484 series and IEC 63044 series (HBES/BACS); - for equipment that is used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications; EXAMPLE 1 Controls for commercial catering, heating and air-conditioning equipment. - used in, on, or in association with equipment that are smart enabled; EXAMPLE 2 Smart grid control, remote interfaces/control of energy-consuming equipment. - that are AC or DC powered with a rated voltage not exceeding 690 V AC or 600 V DC; - used in, on, or in association with equipment that use electricity, gas, oil, solid fuel, solar thermal energy, etc., or a combination thereof; - utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs; - using NTC or PTC thermistors, requirements for which are contained in Annex J; - that are mechanically or electrically operated, responsive to or controlling such characteristics as current and voltage, or combinations thereof; EXAMPLE 3 Centrifugal motor-starting devices. - as well as manual controls when such are electrically and/or mechanically integral with automatic controls. NOTE 2 Requirements for manually actuated mechanical switches not forming part of an automatic control are contained in IEC 61058‑1‑1. This document applies to - the inherent safety of motor-starting control, and - functional safety of motor-starting control and safety related systems (when required), - controls where the performance (for example the effect of EMC phenomena) of the product can impair the overall safety and performance of the controlled system, - the operating values, operating times, and operating sequences where such are associated with equipment safety, - motor-starting controls incorporating electronic devices, thermistor elements, thermal elements or magnetic elements. This document specifies the requirements for construction, operation and testing of automatic electrical motor-starting relays used in, on, or in association with an equipment. This document does not - apply to motor-starting relays designed exclusively for industrial process applications unless explicitly mentioned in the relevant equipment standard. However, this document can be applied to motor-start relays for equipment intended specifically for industrial applications in cases where no relevant safety standard exists; - take into account the response value of an automatic action of a control, if such a response value is dependent upon the method of mounting the control in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer will apply; - apply to general purpose relays or to contactors and motor starters of the type covered by IEC 60947 series; apply to mechanically operated motor-starting devices This part 2‑10 is intended to be used in conjunction with IEC 60730‑1. It was established on the basis of the sixth edition of that standard (2022). Consideration may be given to future editions of, or amendments to, IEC 60730‑1. This part 2‑10 supplements or modifies the corresponding clauses in IEC 60730‑1, so as to convert that publication into the IEC standard: Particular requirements for motor-starting relays. Where this part 2‑10 states "addition", "modification" or "replacement",
IEC 60730-2-10:2026 applies to automatic electrical motor-starting relays - intended to control the start windings of single phase motors; - for use in, on, or in association with equipment for household appliance and similar use; NOTE 1 Throughout this document, the word "equipment" means "appliance and equipment" and "control" means "motor-starting relays". - intended for appliances within the scope of IEC 60335; - for equipment that is used in building automation within the scope of ISO 16484 series and IEC 63044 series (HBES/BACS); - for equipment that is used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications; EXAMPLE 1 Controls for commercial catering, heating and air-conditioning equipment. - used in, on, or in association with equipment that are smart enabled; EXAMPLE 2 Smart grid control, remote interfaces/control of energy-consuming equipment. - that are AC or DC powered with a rated voltage not exceeding 690 V AC or 600 V DC; - used in, on, or in association with equipment that use electricity, gas, oil, solid fuel, solar thermal energy, etc., or a combination thereof; - utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs; - using NTC or PTC thermistors, requirements for which are contained in Annex J; - that are mechanically or electrically operated, responsive to or controlling such characteristics as current and voltage, or combinations thereof; EXAMPLE 3 Centrifugal motor-starting devices. - as well as manual controls when such are electrically and/or mechanically integral with automatic controls. NOTE 2 Requirements for manually actuated mechanical switches not forming part of an automatic control are contained in IEC 61058‑1‑1. This document applies to - the inherent safety of motor-starting control, and - functional safety of motor-starting control and safety related systems (when required), - controls where the performance (for example the effect of EMC phenomena) of the product can impair the overall safety and performance of the controlled system, - the operating values, operating times, and operating sequences where such are associated with equipment safety, - motor-starting controls incorporating electronic devices, thermistor elements, thermal elements or magnetic elements. This document specifies the requirements for construction, operation and testing of automatic electrical motor-starting relays used in, on, or in association with an equipment. This document does not - apply to motor-starting relays designed exclusively for industrial process applications unless explicitly mentioned in the relevant equipment standard. However, this document can be applied to motor-start relays for equipment intended specifically for industrial applications in cases where no relevant safety standard exists; - take into account the response value of an automatic action of a control, if such a response value is dependent upon the method of mounting the control in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer will apply; - apply to general purpose relays or to contactors and motor starters of the type covered by IEC 60947 series; apply to mechanically operated motor-starting devices This part 2‑10 is intended to be used in conjunction with IEC 60730‑1. It was established on the basis of the sixth edition of that standard (2022). Consideration may be given to future editions of, or amendments to, IEC 60730‑1. This part 2‑10 supplements or modifies the corresponding clauses in IEC 60730‑1, so as to convert that publication into the IEC standard: Particular requirements for motor-starting relays. Where this part 2‑10 states "addition", "modification" or "replacement",
IEC 60730-2-10:2026 is classified under the following ICS (International Classification for Standards) categories: 97.120 - Automatic controls for household use. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60730-2-10:2026 has the following relationships with other standards: It is inter standard links to IEC 60730-2-10:2006. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
IEC 60730-2-10:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
IEC 60730-2-10 ®
Edition 3.0 2026-08
INTERNATIONAL
STANDARD
Automatic electrical controls -
Part 2-10: Particular requirements for motor-starting relays
ICS 97.120 ISBN 978-2-8327-1408-9
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either
IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright
or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local
IEC member National Committee for further information.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Discover our powerful search engine and read freely all the
The advanced search enables to find IEC publications by a publications previews, graphical symbols and the glossary.
variety of criteria (reference number, text, technical With a subscription you will always have access to up to date
committee, …). It also gives information on projects, content tailored to your needs.
replaced and withdrawn publications.
Electropedia - www.electropedia.org
The world's leading online dictionary on electrotechnology,
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published containing more than 22 500 terminological entries in English
details all new publications released. Available online and and French, with equivalent terms in 25 additional languages.
once a month by email. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer
Service Centre: sales@iec.ch.
CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 5
3 Terms and definitions . 5
4 General . 5
5 Required technical information . 6
6 Protection against electric shock . 6
7 Provision for protective earthing . 6
8 Terminals and terminations. 6
9 Constructional requirements . 6
10 Threaded parts and connections . 6
11 Creepage distances, clearances and distances through solid insulation . 7
12 Components . 7
13 Fault assessment on electronic circuits . 7
14 Moisture and dust resistance . 7
15 Electric strength and insulation resistance . 7
16 Heating . 7
17 Manufacturing deviation and drift . 7
18 Environmental stress . 8
19 Endurance . 8
20 Mechanical strength . 8
21 Resistance to heat, fire and tracking . 8
22 Resistance to corrosion . 8
23 Electromagnetic compatibility (EMC) requirements – Emission . 8
24 Normal operation . 8
25 Electromagnetic compatibility (EMC) requirements – Immunity . 8
26 Abnormal operation tests . 8
Annexes . 10
Annex H (normative) Requirements related to functional safety . 11
Annex Q (informative) Regional differences relevant for the member countries of
Cenelec . 12
Annex R (informative) National differences relevant in the United States of America . 13
Annex S (informative) National differences relevant in Japan . 14
Annex T (informative) National differences relevant in Canada . 15
Bibliography . 16
Table 1 – Required technical information and methods of providing these information . 6
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-10 Particular requirements for motor-starting relays
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 this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60730-2-10 has been prepared by IEC technical committee 72: Automatic electrical
controls. It is an International Standard.
This third edition cancels and replaces the second edition published in 2006. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) adoption of IEC 60730-1:2022 with all of its significant changes.
The text of this International Standard is based on the following documents:
Draft Report on voting
72/1522/CDV 72/1543/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This part 2-10 is intended to be used in conjunction with IEC 60730-1. It was established on the
basis of the sixth edition of that standard (2022). Consideration may be given to future editions
of, or amendments to, IEC 60730-1.
This part 2-10 supplements or modifies the corresponding clauses in IEC 60730-1, so as to
convert that publication into the IEC standard: Particular requirements for motor-starting relays.
Where this part 2-10 states "addition", "modification" or "replacement", the relevant require-
ment, test specification or explanatory matter in Part 1 should be adapted accordingly.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies.
In the development of a fully international standard it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
In this publication:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matter: in smaller roman type.
– defined terms: bold type.
Subclauses, notes or items which are additional to those in Part 1 are numbered starting from
101, additional annexes are lettered AA, BB, etc.
The reader's attention is drawn to the fact that Annex Q, Annex R, Annex S, and Annex T list
all of the "in-some-country" clauses on differing practices of a less permanent nature relating
to the subject of this document.
A list of all parts of the IEC 60730 series, under the general title: Automatic electrical controls,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability
...
IEC 60730-2-10 ®
Edition 3.0 2026-08
INTERNATIONAL
STANDARD
EXTENDED VERSION
This full version of IEC 60730-2-10:2026 includes the content of the references made
to IEC 60730-1:2022
Automatic electrical controls -
Part 2-10: Particular requirements for motor-starting relays
ICS 97.120 ISBN 978-2-8327-1445-4
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either
IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright
or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local
IEC member National Committee for further information.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Discover our powerful search engine and read freely all the
The advanced search enables to find IEC publications by a publications previews, graphical symbols and the glossary.
variety of criteria (reference number, text, technical With a subscription you will always have access to up to date
committee, …). It also gives information on projects, content tailored to your needs.
replaced and withdrawn publications.
Electropedia - www.electropedia.org
The world's leading online dictionary on electrotechnology,
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published containing more than 22 500 terminological entries in English
details all new publications released. Available online and and French, with equivalent terms in 25 additional languages.
once a month by email. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer
Service Centre: sales@iec.ch.
CONTENTS
FOREWORD . 9
1 Scope . 12
2 Normative references . 13
3 Terms and definitions . 17
3.1 Definitions relating to ratings, voltages, currents, frequencies, and wattages . 17
3.2 Definitions of types of control according to purpose . 20
3.3 Definitions relating to the function of controls . 22
3.4 Definitions relating to disconnection and interruption . 25
3.5 Definitions of types of control according to construction . 26
3.6 Definitions of type of automatic action of a control . 28
3.7 Definitions relating to protection against electric shock and type of insulation . 28
3.8 Definitions relating to component parts of controls . 32
3.9 Definitions of types of terminals and terminations of controls . 33
3.10 Definitions relating to the connections to controls . 35
3.11 Definitions relating to the performance of type 2 actions . 36
3.12 Definitions relating to the requirements for creepage distances and
clearances . 37
3.13 Miscellaneous definitions . 37
3.14 Definitions relating to manufacturer and user . 39
3.15 Definitions pertaining to thermistors . 39
3.16 Definitions relating to the structure of controls using software . 39
3.17 Definitions relating to error avoidance in controls using software . 39
3.18 Definitions relating to fault/error control techniques for controls using
software . 39
3.19 Definitions relating to memory tests for controls using software . 40
3.20 Definitions of software terminology – General . 40
3.21 Definitions relating to classes of control functions . 40
3.22 Definitions relating to functional safety . 40
3.23 Definitions related to access to data exchange . 40
3.24 Definitions related to EMC performance . 40
4 General . 42
4.1 General structure of the document . 42
4.2 General requirements . 43
4.3 General notes on tests . 44
5 Required technical information . 47
5.1 General requirements . 47
5.2 Methods of providing technical information . 47
5.3 Class II symbol . 55
5.4 Additional requirements for marking . 55
5.5 Warning or cautionary markings . 57
6 Protection against electric shock . 57
6.1 General requirements . 57
6.2 Actuating members and actuating means . 59
6.3 Capacitors . 60
6.4 Covers and uninsulated live or hazardous parts . 60
6.5 Battery operated controls provided with a user accessible mains supply input
connector . 61
7 Provision for protective earthing . 61
7.1 Class 0I and Class I controls. 61
7.2 Class II and class III controls . 61
7.3 Adequacy of earth connections . 61
7.4 Corrosion resistance . 62
7.5 Other requirements . 63
7.6 Protective equipotential bonding . 63
8 Terminals and terminations. 63
8.1 Terminals and terminations for external copper conductors . 63
8.2 Terminals and terminations for internal conductors . 68
8.3 Terminals and terminations for integrated conductors . 70
9 Constructional requirements . 70
9.1 Materials . 70
9.2 Protection against electric shock . 71
9.3 Actuation and operation . 73
9.4 Actions . 76
9.5 Openings in enclosures . 79
9.6 Mounting of controls . 79
9.7 Attachment of cords . 80
9.8 Size of cords – non-detachable . 81
9.9 Inlet openings . 82
9.10 Equipment inlets and socket-outlets . 82
9.11 Requirements during mounting, use, maintenance and servicing . 83
9.12 Controls using software . 85
9.13 Protective controls and components of protective control systems . 88
10 Threaded parts and connections . 91
10.1 Threaded parts moved during mounting or servicing . 91
10.2 Current-carrying connections and connections providing protective earthing
continuity . 92
11 Creepage distances, clearances and distances through solid insulation . 93
11.1 General . 93
11.2 Clearances . 94
11.3 Creepage distances . 98
11.4 Solid insulation . 102
12 Components . 103
12.1 Transformers . 103
12.2 Switch mode power supplies and converters . 103
12.3 Capacitors . 104
12.4 Fuses . 104
12.5 Varistors . 104
12.6 Thermistors. 104
12.7 Relays . 105
12.8 Other components . 105
13 Fault assessment on electronic circuits . 105
13.1 Fault assessment for inherent safety . 105
13.2 Fault assessment to ensure functional safety . 111
14 Moisture and dust resistance . 111
14.1 Protection against ingress of water and dust . 111
14.2 Protection against humid conditions . 112
14.3 Touch current test for in-line cord controls and free-standing controls . 113
15 Electric strength and insulation resistance . 114
15.1 Insulation resistance . 114
15.2 Electric strength . 114
15.3 Additional tests for in-line cord and free-standing controls . 116
16 Heating . 117
17 Manufacturing deviation and drift . 121
18 Environmental stress . 121
18.1 Transportation and storage . 121
18.2 Environmental stress of temperature . 121
19 Endurance . 122
19.1 General requirements . 122
19.2 Electrical conditions for the tests . 123
19.3 Thermal conditions for the tests . 129
19.4 Manual and mechanical conditions for the tests . 129
19.5 Dielectric strength requirements. 130
19.6 Ageing test . 130
19.7 Overvoltage test or overload test in all countries using an overload test of
automatic action at accelerated rate . 130
19.8 Test of automatic action at accelerated rate . 131
19.9 Test of automatic action at slow rate . 131
19.10 Overvoltage test or overload test in all countries that use the overload test of
manual action at accelerated speed . 131
19.11 Test of manual action at slow speed . 131
19.12 Test of manual action at high speed which has multiple poles, and where
polarity reversal occurs during the action . 131
19.13 Test of manual action at accelerated speed . 131
19.14 Evaluation of compliance . 131
19.15 Test for particular purpose controls . 132
20 Mechanical strength . 132
20.1 General requirements . 132
20.2 Impact resistance . 133
20.3 Free-standing controls . 133
20.4 In-line cord controls . 134
20.5 Pull-cord actuated controls . 134
20.6 Foot actuated controls . 135
20.7 Actuating member and actuating means . 135
20.8 Flexing – test . 135
20.9 Cord anchorages – test . 136
21 Resistance to heat, fire and tracking . 137
21.1 General requirements . 137
21.2 Integrated, incorporated and in-line cord controls. 137
21.3 Independently mounted, free-standing controls . 138
22 Resistance to corrosion . 138
22.1 Resistance to rusting . 138
23 Electromagnetic compatibility (EMC) requirements – Emission . 139
23.1 General requirement . 139
23.2 High frequency emission . 139
23.3 Low frequency emission . 143
24 Normal operation . 143
25 Electromagnetic compatibility (EMC) requirements – Immunity . 143
25.1 General . 143
25.2 EMC test plan and report . 144
25.3 Immunity requirements . 146
25.4 Performance criteria . 149
25.5 Surge immunity test . 150
25.6 Electrical fast transient immunity test . 150
25.7 Radio-frequency electromagnetic field immunity . 151
25.8 Electrostatic discharge . 151
25.9 Immunity to power-frequency magnetic fields . 151
25.10 Test of the influence of voltage dips and voltage interruption in the power
supply network . 151
26 Abnormal operation tests . 152
26.1 Abnormal temperature test . 152
26.2 Overload tests . 152
26.3 Battery short-circuit test . 153
Annex A (normative) Indelibility of markings . 171
Annex B (normative) Measurement of creepage distances and clearances in air . 173
Annex C (informative) Nominal voltages of supply systems for different modes of
overvoltage control . 177
Annex D (normative) Overvoltage categories . 179
Annex E (informative) Typical usage of controls and related overvoltage categories . 180
Annex F (normative) Pollution degrees . 181
F.1 Pollution . 181
F.2 Degrees of pollution in the micro-environment . 181
Annex G (normative) Resistance to heat, fire and tracking tests . 182
G.1 Glow-wire test . 182
G.2 Proof tracking test . 182
G.3 Ball pressure test . 182
Annex H (normative) Requirements related to functional safety . 184
H.3 Terms and definitions. 184
H.5 Information . 195
H.9 Constructional requirements . 197
H.13 Fault assessment on electronic circuits . 213
H.17 Manufacturing deviation and drift . 218
H.19 Endurance . 219
H.25 Electromagnetic compatibility (EMC) requirements – Immunity. 220
Annex I (normative) Requirements for certain types of DC supplied controls . 234
I.1 Scope . 234
Annex J (normative) Requirements for thermistor elements and controls using
thermistors. 236
J.1 Scope . 236
Annex K (normative) Circuit for measuring touch current . 253
Annex L (normative) Printed circuit board coating performance test . 254
Annex M (normative) Printed circuit board protection . 256
Annex N (informative) Explanatory notes for surge immunity test . 259
N.1 Different source impedances . 259
N.2 Application of the tests. 259
N.3 Installation classification . 260
Annex O (informative) Guidance for applying Clause 11 . 263
Annex P (normative) Requirements for SELV and PELV . 266
P.1 Overview of the requirements for SELV and PELV . 266
P.2 Protection against electric shock by SELV system or PELV system . 266
P.3 Protective measures for SELV system and PELV system . 267
Annex Q (informative) Regional differences relevant for the member countries of
Cenelec . 269
Annex R (informative) National differences relevant in the United States of America . 274
R.2 Normative references . 274
Annex S (informative) National differences relevant in Japan . 275
S.2 Normative references . 275
Annex T (informative) National differences relevant in Canada . 276
T.2 Normative references . 276
Bibliography . 277
Figure 1 – Example of ports . 40
Figure 2 – Structure of the document with respect to inherent safety and functional
safety . 43
Figure 3 – Example of an electronic circuit with low power points . 106
Figure 4 – Test pin probe 13 of IEC 61032:1997 . 153
Figure 5 – Test finger probe B of IEC 61032:1997 . 154
Figure 6 – Test fingernail . 155
Figure 7 – Impact test for free-standing controls . 156
Figure 8 – Tumbling barrel . 156
Figure 9 – Apparatus for testing durability of markings on rating labels . 157
Figure 10 – Apparatus for flexing test . 158
Figure 11 – Screw terminals and stud terminals . 159
Figure 12 – Pillar terminals . 160
Figure 13 – Mantle terminals . 161
Figure 14 – Saddle and lug terminals . 162
Figure 15 – Tabs. 163
Figure 16 – Tabs for non-reversible connectors . 164
Figure 17 – Receptacles . 165
Figure 18 – Measurement of creepage distance and clearance . 166
Figure 19 – Diagram for touch current measurement at operating temperature for
single-phase connection of class II controls . 167
Figure 20 – Diagram for touch current measurement at operating temperature for
single-phase connection of controls other than class II . 167
Figure 21 – Diagram for touch current measurement at operating temperature for
three-phase connection of class II controls . 168
Figure 22 – Diagram for touch current measurement at operating temperature for
three-phase connection of controls other than class II . 169
Figure 23 – Diagram for touch current measurement at operating temperature for
single-phase connection of controls to three-wire, ground neutral supply other than
class II . 169
Figure 24 – Diagram for touch current measurement at operating temperature for
two‑phase connection of controls to three-wire, ground neutral supply other
than class II . 170
Figure B.1 – Narrow groove . 174
Figure B.2 – Wide groove . 174
Figure B.3 – V-shaped groove . 174
Figure B.4 – Rib . 174
Figure B.5 – Uncemented joint with narrow groove . 175
Figure B.6 – Uncemented joint with wide groove . 175
Figure B.7 – Uncemented joint with narrow and wide grooves . 175
Figure B.8 – Diverging side walls . 176
Figure B.9 – Narrow recess . 176
Figure B.10 – Wide recess . 176
Figure B.11 – Conductive floating part . 176
Figure H.1 – V-Model for the software life cycle . 205
Figure H.2 – Voltage variation test . 223
Figure J.1 – Generic test circuit for inrush-current limiting thermistor endurance test . 252
Figure K.1 – Circuit for measuring touch currents . 253
Figure L.1 – Test sample . 255
Figure M.1 – Example of type 1 protection . 257
Figure M.2 – Example of type 2 protection . 258
Figure N.1 – Example of surge protection by shielding in buildings with common earth
reference systems . 261
Figure N.2 – Example of secondary surge protection in buildings with separate
common earth reference systems . 262
Figure N.3 – Example of primary and secondary surge protection of indoor/outdoor
equipment . 262
Figure O.1 – Guidance flowchart for application of requirements of Clause 11 . 264
Table 1 – Required technical information and methods of providing these information . 50
Table 2 – Cross-sectional area of conductors . 64
Table 3 – Terminal conductors . 66
Table 4 – Conductor pull test values . 67
Table 5 – Nominal cross-sectional areas of conductors . 68
Table 6 – Axial force values for tab insertion and withdrawal . 70
Table 7 – Minimum cord conductor sizes . 81
Table 8 – Data exchange . 87
Table 9 – Threaded parts torque test values . 92
Table 10 – Rated impulse voltage for equipment energized directly from the supply
mains (from IEC 60664-1:2007, Table F.1) . 95
Table 11 – Clearances for insulation co-ordination (from IEC 60664-1:2007, Table F.2). 96
Table 12 – Minimum creepage distances for basic insulation . 100
Table 13 – Minimum creepage distances for functional insulation . 101
Table 14 – Electrical/electronic component fault modes . 107
Table 15 – Minimum insulation resistance . 114
Table 16 – Insulation or disconnection test voltages . 115
Table 17 – Maximum heating temperatures . 119
Table 18 – Electrical conditions for the overvoltage and endurance tests . 125
Table 19 – Electrical conditions for the overload tests of 19.7 and 19.10 . 127
Table 20 – Electrical conditions for the endurance tests of 19.8, 19.9, 19.11, 19.12
and 19.13 . 128
Table 21 – Pull-cord force test values . 134
Table 22 – Pull and torque values . 136
Table 23 – Emission limit for residential electromagnetic environment . 141
Table 24 – Emission limit for industrial electromagnetic environment . 142
Table 25 – The applicable EMC test in relation to the class of control function and type
of Action . 144
Table 26 – Immunity test requirements for residential electromagnetic environments . 146
Table 27 – Immunity test requirements for industrial electromagnetic environment . 148
Table 28 – Performance criteria . 150
Table B.1 – Value of X . 173
Table C.1 – Inherent control or equivalent protective control . 177
Table C.2 – Cases where protective control is necessary and control is provided by
surge arresters having a ratio of clamping voltage to rated voltage not smaller than
that specified by IEC 60099-1 . 178
Table E.1 – Typical usage. 180
Table H.1 – Additional items to Table 1 . 195
a
Table H.2 – Acceptable measures to address fault/errors . 198
Table H.3 – Examples of techniques/measures for semi-formal methods . 205
Table H.4 – Examples of techniques/measures for software architecture specification . 206
Table H.5 – Examples of techniques/measures for module design specification . 207
Table H.6 – Examples of techniques/measures for design and coding standards . 207
Table H.7 – Examples of techniques/measures for software module testing . 208
Table H.8 – Examples of techniques/measures for software integration testing . 209
Table H.9 – Examples of techniques/measures for software safety validation . 209
Table H.10 – Combinations of analytical measures during hardware development . 210
Table H.11 – Examples of defences against unauthorised access and transmission
failure modes . 212
Table H.12 – Applicable test levels in addition to Clause 25. 221
Table H.13 – Voltage dips, short interruptions and voltage variations . 222
Table H.14 – Test values for voltage variations . 223
Table H.15 – Test voltages for test level 2 (depending on the installation class
conditions) . 226
Table H.16 – Test level for electrical fast transient burst test . 227
Table H.17 – Test levels for conducted disturbances on mains and I/O lines . 229
Table H.18 – Test level for immunity to radiated electromagnetic fields . 230
Table H.19 – Increased test level for radiated immunity . 230
Table H.20 – Test level for supply frequency variations . 231
Table H.21 – Test level for continuous fields . 232
Table I.1 – Electrical transient conduction immunity in accordance with ISO 7637-2 . 234
Table I.2 – Electrical transient conduction immunity in accordance with ISO 7637-3 . 235
Table J.1 – Maximum current . 238
Table J.2 – Normal operating conditions . 239
Table J.3 – Samples for the test (clause reference) . 240
Table J.4 – Electrical and thermal ratings of a thermistor . 241
Table J.5 – Additional items to Table 1 . 242
Table J.6 – Sequence of calibration and conditioning tests for PTC thermistors . 244
Table J.7 – Classes for PTC sensing thermistors . 245
Table J.8 – Sequence of calibration and conditioning tests for NTC thermistors . 246
Table J.9 – Classes for NTC sensing thermistors . 247
Table J.10 – Number of cycles for endurance test . 250
Table J.11 – Ageing test temperature . 250
Table J.12 – Number of cycles for endurance test . 251
Table L.1 – Environmental cycling conditions . 254
Table M.1 – IEC 60664-3 test levels or conditions . 256
Table O.1 – Example A – Using Annex O guidance for applying Clause 11 . 265
Table O.2 – Example B – Using Annex O guidance for applying Clause 11 . 265
Table Q.1 – Additional aging parameters for windings . 270
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-10 Particular requirements for motor-starting relays
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 this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
...
IEC 60730-2-10 ®
Edition 3.0 2026-08
NORME
INTERNATIONALE
Dispositifs de commande électrique automatiques -
Partie 2-10: Exigences particulières pour les relais de démarrage de moteur
ICS 97.120 ISBN 978-2-8327-1408-9
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Recherche de publications IEC - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications gratuitement tous les aperçus des publications, symboles
IEC en utilisant différents critères (numéro de référence, graphiques et le glossaire. Avec un abonnement, vous aurez
texte, comité d’études, …). Elle donne aussi des toujours accès à un contenu à jour adapté à vos besoins.
informations sur les projets et les publications remplacées
ou retirées. Electropedia - www.electropedia.org
Le premier dictionnaire d'électrotechnologie en ligne au
IEC Just Published - webstore.iec.ch/justpublished monde, avec plus de 22 500 articles terminologiques en
Restez informé sur les nouvelles publications IEC. Just anglais et en français, ainsi que les termes équivalents
dans 25 langues additionnelles. Egalement appelé
Published détaille les nouvelles publications parues.
Disponible en ligne et une fois par mois par email. Vocabulaire Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-
nous: sales@iec.ch.
SOMMAIRE
AVANT-PROPOS . 2
1 Domaine d'application . 5
2 Références normatives . 6
3 Termes et définitions . 6
4 Généralités . 6
5 Informations techniques exigées . 7
6 Protection contre les chocs électriques . 7
7 Dispositions en vue de la mise à la terre de protection . 7
8 Bornes et connexions . 7
9 Exigences de construction . 7
10 Parties filetées et connexions . 8
11 Lignes de fuite, distances dans l'air et distances à travers l'isolation solide . 8
12 Éléments constituants . 8
13 Évaluation des pannes sur les circuits électroniques . 8
14 Résistance à l'humidité et à la poussière . 8
15 Résistance d'isolement et rigidité diélectrique . 8
16 Échauffements . 8
17 Tolérances de fabrication et dérive . 9
18 Contraintes climatiques . 9
19 Endurance . 9
20 Résistance mécanique. 9
21 Résistance à la chaleur, au feu et aux courants de cheminement . 9
22 Résistance à la corrosion . 9
23 Exigences de compatibilité électromagnétique (CEM) – Émission . 9
24 Fonctionnement normal . 9
25 Exigences de compatibilité électromagnétique (CEM) – Immunité . 9
26 Essais en fonctionnement anormal . 10
Annexes . 11
Annexe H (normative) Exigences relatives à la sécurité fonctionnelle . 12
Annexe Q (informative) Différences régionales pertinentes pour les pays membres du
CENELEC . 13
Annexe R (informative) Différences nationales applicables aux États-Unis . 14
Annexe S (informative) Différences nationales applicables au Japon . 15
Annexe T (informative) Différences nationales applicables au Canada . 16
Bibliographie . 17
Tableau 1 – Informations techniques exigées et méthodes pour fournir ces
informations . 7
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
Dispositifs de commande électrique automatiques -
Partie 2-10: Exigences particulières pour les relais
de démarrage de moteur
AVANT-PROPOS
1) La Commission Électrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l'IEC). L'IEC a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. À cet effet, l'IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de l'IEC"). Leur élaboration est confiée à des comités d'études, aux
travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l'IEC, participent également aux
travaux. L'IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l'IEC concernant les questions techniques représentent, dans la mesure du
possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l'IEC intéressés
sont représentés dans chaque comité d'études.
3) Les Publications de l'IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l'IEC. Tous les efforts raisonnables sont entrepris afin que l'IEC
s'assure de l'exactitude du contenu technique de ses publications; l'IEC ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l'IEC s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de l'IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l'IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L'IEC elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de l'IEC. L'IEC n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l'IEC, à ses administrateurs, employés, auxiliaires ou mandataires,
y compris ses experts particuliers et les membres de ses comités d'études et des Comités nationaux de l'IEC,
pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre dommage de quelque
nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais de justice) et les dépenses
découlant de la publication ou de l'utilisation de cette Publication de l'IEC ou de toute autre Publication de l'IEC,
ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’IEC attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation d’un
ou de plusieurs brevets. L’IEC ne prend pas position quant à la preuve, à la validité et à l’applicabilité de tout
droit de brevet revendiqué à cet égard. À la date de publication du présent document, l’IEC n'a pas reçu
notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois, il y a lieu
d’avertir les responsables de la mise en application du présent document que des informations plus récentes
sont susceptibles de figurer dans la base de données de brevets, disponible à l'adresse https://patents.iec.ch et
www.iso.org/patents. L’IEC ne saurait être tenue pour responsable de ne pas avoir identifié tout ou partie de tels
droits de propriété.
L'IEC 60730-2-10 a été établie par le comité d'études 72 de l'IEC: Commandes électriques
automatiques. Il s'agit d'une Norme internationale.
Cette troisième édition annule et remplace la deuxième édition parue en 2006. Cette édition
constitue une révision technique.
Cette édition inclut les modifications techniques significatives suivantes par rapport à l'édition
précédente:
a) adoption du contenu de l'IEC 60730-1:2022 avec toutes ses modifications significatives.
Le texte de cette Norme internationale est issu des documents suivants:
Projet Rapport de vote
72/1522/CDV 72/1543/RVC
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à son approbation.
La langue employée pour l'élaboration de cette Norme internationale est l'anglais.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2, il a été développé selon les
Directives ISO/IEC, Partie 1 et les Directives ISO/IEC, Supplément IEC, disponibles sous
www.iec.ch/members_experts/refdocs. Les principaux types de documents développés par
l'IEC sont décrits plus en détail sous www.iec.ch/publications.
La présente partie 2-10 est destinée à être utilisée conjointement avec l'IEC 60730-1. Elle a
été établie sur la base de la sixième édition de cette norme (2022). Les futures éditions de
l'IEC 60730-1, ou de ses amendements, pourront être prises en compte.
La présente partie 2-10 complète ou modifie les articles correspondants de l'IEC 60730-1, de
façon à transformer cette publication en norme IEC: Exigences particulières pour les relais de
démarrage de moteur.
Lorsque la présente partie 2-10 spécifie "addition", "modification" ou "remplacement", il
convient d'adapter l'exigence, la modalité d'essai ou les notes correspondantes de la Partie 1
en conséquence.
Lorsqu'un paragraphe particulier de la Partie 1 n'est pas mentionné dans cette partie 2, ce
paragraphe s'applique.
Afin d'établir une norme de portée internationale, il a été nécessaire de prendre en compte les
exigences divergentes qui résultent de l'expérience acquise en pratique dans différentes
régions du monde et de reconnaître les différences nationales qui existent entre les réseaux
d'alimentation électrique et entre les règles d'installation.
Dans cette publication:
– exigences proprement dites: caractères romains;
– modalités d'essais: caractères italiques;
– notes: petits caractères romains;
– termes définis: caractères gras.
Les paragraphes, notes ou éléments qui s'ajoutent à ceux de la Partie 1 sont numérotés à partir
de 101 et les annexes qui sont ajoutées sont désignées AA, BB, etc.
L'attention du lecteur est attirée sur le fait que l'Annexe Q, l'Annexe R, l'Annexe S et l'Annexe T
donnent une liste de tous les articles qui traitent des différences de pratiques à caractère moins
permanent qui existent dans certains pays dans le domaine couvert par le présent document.
Une liste de toutes les parties de la série IEC 60730, publiées sous le titre général: Dispositifs
de commande électrique automatiques, se trouve sur le site web de l'IEC.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de stabilité
indiquée sur le site web de l'IEC sous webstore.iec.ch dans les données relatives au document
recherché. À cette date, le document sera
– reconduit,
– supprimé, ou
– révisé.
1 Domaine d'application
Remplacement:
La présente partie de l'IEC 60730 s'applique aux relais électriques automatiques de
démarrage de moteur
– destinés à commander les
...











