IEC 60204-1:2016

Safety of machinery - Electrical equipment of machines - Part 1: General requirements

IEC 60204-1:2016 applies to electrical, electronic and programmable electronic equipment and systems to machines not portable by hand while working, including a group of machines working together in a co-ordinated manner. The equipment covered by this part of IEC 60204 commences at the point of connection of the supply to the electrical equipment of the machine. This sixth edition cancels and replaces the fifth edition published in 2005. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- added requirements to address applications involving power drive systems (PDS);
- revised electromagnetic compatibility (EMC) requirements;
- clarified overcurrent protection requirements;
- requirements for determination of the short circuit current rating of the electrical equipment;
- revised protective bonding requirements and terminology;
- reorganization and revision to Clause 9, including requirements pertaining to safe torque off of PDS, emergency stop, and control circuit protection;
- revised symbols for actuators of control devices;
- revised technical documentation requirements;
- general updating to current special national conditions, normative standards, and bibliographical references.

Sécurité des machines - Équipement électrique des machines - Partie 1: Exigences générales

L'IEC 60204-1:2016 s'applique aux équipements et systèmes électriques, électroniques et électroniques programmables des machines non portables à la main en fonctionnement y compris un groupe de machines fonctionnant ensemble d'une manière coordonnée. L'équipement couvert par la présente partie de l'IEC 60204 commence au point de connexion de l'alimentation à l'équipement électrique de la machine. Cette sixième édition annule et remplace la cinquième édition parue en 2005. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- exigences supplémentaires pour traiter des applications impliquant des systèmes d'entraînements électriques de puissance (PDS);
- exigences révisées concernant la compatibilité électromagnétique (CEM);
- clarification des exigences de protection contre les surintensités;
- exigences pour la détermination des caractéristiques du courant de court-circuit de l'équipement électrique;
- révision des exigences de liaisons de protection et la terminologie;
- réorganisation et révision à l'Article 9, notamment les exigences relatives à la suppression sûre du couple du PDS, à l'arrêt d'urgence, et à la protection du circuit de commande;
- révision des symboles pour les organes de commande des appareils de commande;
- révision des exigences sur la documentation technique;
- mise à jour générale des conditions nationales particulières, des normes et des références bibliographiques.

General Information

• Status: Published
• Publication Date: 14-Sep-2021
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 13.110 - Safety of machinery
• ICS: 29.020 - Electrical engineering in general
• Technical Committee: TC 44 - Safety of machinery - Electrotechnical aspects
• Drafting Committee: MT 60204-1 - TC 44/MT 60204-1
• Current Stage: PPUB - Publication issued
• Start Date: 31-Aug-2016
• Completion Date: 13-Oct-2016

Relations

• Amended By: IEC 60204-1:2016/AMD1:2021 - Amendment 1 - Safety of machinery - Electrical equipment of machines - Part 1: General requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 60204-1:2005 - Safety of machinery - Electrical equipment of machines - Part 1: General requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 60204-1:2005/AMD1:2008 - Amendment 1 - Safety of machinery - Electrical equipment of machines - Part 1: General requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60204-1 ®
Edition 6.0 2016-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Safety of machinery – Electrical equipment of machines –
Part 1: General requirements
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 Central Office Tel.: [phone]
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Switzerland www.iec.ch
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 corrigenda or an amendment might have been published.

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bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

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variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
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IEC 60204-1 ®
Edition 6.0 2016-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Safety of machinery – Electrical equipment of machines –

Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.110; 29.020 ISBN 978-2-8322-3696-3

– 2 – IEC 60204-1:2016 RLV © IEC 2016
CONTENTS
FOREWORD . 10
INTRODUCTION . 13
1 Scope . 15
2 Normative references . 16
3 Terms, definitions and abbreviated terms . 19
3.1 Terms and definitions. 19
3.2 Abbreviated terms . 28
4 General requirements . 28
4.1 General . 28
4.2 Selection of equipment . 29
4.2.1 General . 29
4.2.2 Electrical equipment in compliance with the IEC 60439 series
Switchgear . 30
4.3 Electrical supply. 30
4.3.1 General . 30
4.3.2 AC supplies . 30
4.3.3 DC supplies . 30
4.3.4 Special supply systems . 31
4.4 Physical environment and operating conditions . 31
4.4.1 General . 31
4.4.2 Electromagnetic compatibility (EMC) . 31
4.4.3 Ambient air temperature . 32
4.4.4 Humidity . 32
4.4.5 Altitude . 32
4.4.6 Contaminants . 33
4.4.7 Ionizing and non-ionizing radiation . 33
4.4.8 Vibration, shock, and bump . 33
4.5 Transportation and storage . 33
4.6 Provisions for handling . 33
4.7 Installation .
5 Incoming supply conductor terminations and devices for disconnecting and
switching off . 33
5.1 Incoming supply conductor terminations. 33
5.2 Terminal for connection to of the external protective earthing system
conductor . 34
5.3 Supply disconnecting (isolating) device . 34
5.3.1 General . 34
5.3.2 Type . 35
5.3.3 Requirements . 35
5.3.4 Operating means of the supply disconnecting device . 36
5.3.5 Excepted circuits . 37
5.4 Devices for switching off removal of power for prevention of unexpected
start-up . 37
5.5 Devices for disconnecting isolating electrical equipment . 38
5.6 Protection against unauthorized, inadvertent and/or mistaken connection . 39
6 Protection against electric shock . 39

6.1 General . 39
6.2 Basic protection against direct contact . 39
6.2.1 General . 39
6.2.2 Protection by enclosures . 40
6.2.3 Protection by insulation of live parts . 41
6.2.4 Protection against residual voltages . 41
6.2.5 Protection by barriers . 41
6.2.6 Protection by placing out of reach or protection by obstacles . 41
6.3 Fault protection against direct contact . 42
6.3.1 General . 42
6.3.2 Prevention of the occurrence of a touch voltage . 42
6.3.3 Protection by automatic disconnection of supply . 42
6.4 Protection by the use of PELV . 43
6.4.1 General requirements . 43
6.4.2 Sources for PELV . 44
7 Protection of equipment . 44
7.1 General . 44
7.2 Overcurrent protection . 45
7.2.1 General . 45
7.2.2 Supply conductors . 45
7.2.3 Power circuits . 45
7.2.4 Control circuits . 45
7.2.5 Socket outlets and their associated conductors . 46
7.2.6 Lighting circuits . 46
7.2.7 Transformers . 46
7.2.8 Location of overcurrent protective devices . 46
7.2.9 Overcurrent protective devices . 46
7.2.10 Rating and setting of overcurrent protective devices . 47
7.3 Protection of motors against overheating . 47
7.3.1 General . 47
7.3.2 Overload protection . 47
7.3.3 Over-temperature protection . 48
7.3.4 Current limiting protection .
7.4 Protection against abnormal temperature protection . 48
7.5 Protection against the effects of supply interruption or voltage reduction and
subsequent restoration . 48
7.6 Motor overspeed protection. 49
7.7 Additional earth fault/residual current protection . 49
7.8 Phase sequence protection . 49
7.9 Protection against overvoltages due to lightning and to switching surges . 49
7.10 Short-circuit current rating . 50
8 Equipotential bonding . 50
8.1 General . 50
8.2 Protective bonding circuit . 53
8.2.1 General . 53
8.2.2 Protective conductors . 54
8.2.3 Continuity of the protective bonding circuit . 55
8.2.4 Exclusion of switching devices from the protective bonding circuit .
8.2.4 Protective conductor connecting points . 56

– 4 – IEC 60204-1:2016 RLV © IEC 2016
8.2.5 Parts that need not to be connected to t
...

IEC 60204-1 ®
Edition 6.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety of machinery – Electrical equipment of machines –
Part 1: General requirements
Sécurité des machines – Équipement électrique des machines –
Partie 1: Exigences générales
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
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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
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Switzerland www.iec.ch
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 corrigenda or an amendment might have been published.

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bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

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IEC 60204-1 ®
Edition 6.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety of machinery – Electrical equipment of machines –

Part 1: General requirements
Sécurité des machines – Équipement électrique des machines –

Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.110; 29.020 ISBN 978-2-8322-3621-5

– 2 – IEC 60204-1:2016 © IEC 2016
CONTENTS
FOREWORD . 10
INTRODUCTION . 13
1 Scope . 15
2 Normative references. 16
3 Terms,definitions and abbreviated terms . 17
3.1 Terms and definitions . 17
3.2 Abbreviated terms . 26
4 General requirements . 26
4.1 General . 26
4.2 Selection of equipment . 27
4.2.1 General . 27
4.2.2 Switchgear . 27
4.3 Electrical supply . 28
4.3.1 General . 28
4.3.2 AC supplies . 28
4.3.3 DC supplies . 28
4.3.4 Special supply systems . 28
4.4 Physical environment and operating conditions . 28
4.4.1 General . 28
4.4.2 Electromagnetic compatibility (EMC) . 29
4.4.3 Ambient air temperature . 29
4.4.4 Humidity . 29
4.4.5 Altitude . 29
4.4.6 Contaminants . 29
4.4.7 Ionizing and non-ionizing radiation . 30
4.4.8 Vibration, shock, and bump . 30
4.5 Transportation and storage . 30
4.6 Provisions for handling . 30
5 Incoming supply conductor terminations and devices for disconnecting and
switching off . 30
5.1 Incoming supply conductor terminations . 30
5.2 Terminal for connection of the external protective conductor . 31
5.3 Supply disconnecting (isolating) device. 31
5.3.1 General . 31
5.3.2 Type . 31
5.3.3 Requirements . 32
5.3.4 Operating means of the supply disconnecting device . 32
5.3.5 Excepted circuits . 33
5.4 Devices for removal of power for prevention of unexpected start-up . 34
5.5 Devices for isolating electrical equipment . 34
5.6 Protection against unauthorized, inadvertent and/or mistaken connection . 35
6 Protection against electric shock . 35
6.1 General . 35
6.2 Basic protection . 35
6.2.1 General . 35
6.2.2 Protection by enclosures . 36

6.2.3 Protection by insulation of live parts . 37
6.2.4 Protection against residual voltages . 37
6.2.5 Protection by barriers . 37
6.2.6 Protection by placing out of reach or protection by obstacles . 37
6.3 Fault protection . 37
6.3.1 General . 37
6.3.2 Prevention of the occurrence of a touch voltage . 38
6.3.3 Protection by automatic disconnection of supply . 38
6.4 Protection by the use of PELV . 39
6.4.1 General requirements . 39
6.4.2 Sources for PELV . 40
7 Protection of equipment . 40
7.1 General . 40
7.2 Overcurrent protection . 40
7.2.1 General . 40
7.2.2 Supply conductors . 40
7.2.3 Power circuits . 41
7.2.4 Control circuits . 41
7.2.5 Socket outlets and their associated conductors . 41
7.2.6 Lighting circuits . 41
7.2.7 Transformers . 42
7.2.8 Location of overcurrent protective devices . 42
7.2.9 Overcurrent protective devices . 42
7.2.10 Rating and setting of overcurrent protective devi
...

IEC 60204-1 ®
Edition 6.1 2021-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety of machinery –
Part 1: General requirements
Sécurité des machines –
Partie 1: Exigences générales
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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
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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.

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IEC 60204-1 ®
Edition 6.1 2021-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety of machinery –
Part 1: General requirements
Sécurité des machines –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.110; 29.020 ISBN 978-2-8322-4040-3

IEC 60204-1 ®
Edition 6.1 2021-09
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Safety of machinery –
Part 1: General requirements
Sécurité des machines –
Partie 1: Exigences générales
– 2 – IEC 60204-1:2016+AMD1:2021 CSV
© IEC 2021
CONTENTS
FOREWORD . 10
INTRODUCTION . 13
1 Scope . 15
2 Normative references. 16
3 Terms, definitions and abbreviated terms . 17
3.1 Terms and definitions . 17
3.2 Abbreviated terms . 26
4 General requirements . 26
4.1 General . 26
4.2 Selection of equipment . 27
4.2.1 General . 27
4.2.2 Switchgear . 28
4.3 Electrical supply . 28
4.3.1 General . 28
4.3.2 AC supplies . 28
4.3.3 DC supplies . 28
4.3.4 Special supply systems . 28
4.4 Physical environment and operating conditions . 29
4.4.1 General . 29
4.4.2 Electromagnetic compatibility (EMC) . 29
4.4.3 Ambient air temperature . 29
4.4.4 Humidity . 29
4.4.5 Altitude . 29
4.4.6 Contaminants . 30
4.4.7 Ionizing and non-ionizing radiation . 30
4.4.8 Vibration, shock, and bump . 30
4.5 Transportation and storage . 30
4.6 Provisions for handling . 30
5 Incoming supply conductor terminations and devices for disconnecting and
switching off . 30
5.1 Incoming supply conductor terminations . 30
5.2 Terminal for connection of the external protective conductor . 31
5.3 Supply disconnecting (isolating) device. 31
5.3.1 General . 31
5.3.2 Type . 32
5.3.3 Requirements . 32
5.3.4 Operating means of the supply disconnecting device . 33
5.3.5 Excepted circuits . 33
5.4 Devices for removal of power for prevention of unexpected start-up . 34
5.5 Devices for isolating electrical equipment . 35
5.6 Protection against unauthorized, inadvertent and/or mistaken connection . 35
6 Protection against electric shock . 35
6.1 General . 35
6.2 Basic protection . 36
6.2.1 General . 36
6.2.2 Protection by enclosures . 36

© IEC 2021
6.2.3 Protection by insulation of live parts . 37
6.2.4 Protection against residual voltages . 37
6.2.5 Protection by barriers . 37
6.2.6 Protection by placing out of reach or protection by obstacles . 37
6.3 Fault protection . 38
6.3.1 General . 38
6.3.2 Prevention of the occurrence of a touch voltage . 38
6.3.3 Protection by automatic disconnection of supply . 38
6.4 Protection by the use of PELV . 39
6.4.1 General requirements . 39
6.4.2 Sources for PELV . 40
7 Protection of equipment . 40
7.1 General . 40
7.2 Overcurrent protection . 41
7.2.1 General . 41
7.2.2 Supply conductors . 41
7.2.3 Power circuits . 41
7.2.4 Control circuits . 41
7.2.5 Socket outlets and their associated conductors . 42
7.2.6 Lighting circuits . 42
7.2.7 Transformers . 42
7.2.8 Location of overcurrent protective devices . 42
7.2.9 Overcurrent protective devices . 42
7.2.10 Rating and setting of overcurrent protective devices . 42
7.3 Protection of motors against overheating . 43
7.3.1 General . 43
7.3.2 Overload protection . 43
7.3.3 Over-temperature protection . 43
7.4 Protection against abnormal temperature .
...