IEC 60204-32:2008

Safety of machinery - Electrical equipment of machines - Part 32: Requirements for hoisting machines

IEC 60204-32 applies to the application of electrical and electronic equipment and systems to hoisting machines and related equipment. The equipment covered by this standard commences at the point of connection of the supply to the electrical equipment of the hoisting machine (crane-supply-switch) including systems for power supply and control feeders situated outside of the hoisting machine, for example, flexible cables or conductor wires or conductor bars. This standard is applicable to equipment or parts of equipment not exceeding 1 000 V a.c. or 1 500 V d.c. between lines and with nominal frequencies not exceeding 200 Hz. For the purposes of this standard, hoisting machines include cranes of all types, winches of all types, and storage and retrieval machines. It includes the following significant technical changes with respect to the previous edition:
- deletion of Clause 11 of the previous edition;
- modification of the structure of equipotential bonding (Clause 8);
- separation of control functions (Clause 9) and devices (Clause 10);
- structure of technical documentation (Clause 17);
- verification of protection by automatic disconnection of supply (18.2);
- Subclause 9.2.7 on cableless controls has been modified.

Sécurité des machines - Equipement électrique des machines - Partie 32: Exigences pour les appareils de levage

La CEI 60204-32 :2008 s'applique aux équipements et systèmes électriques et électroniques des appareils de levage et à leurs équipements associés. L'équipement traité dans la présente norme a pour origine le point de connexion de l'alimentation à l'équipement électrique de l'appareil de levage (sectionneur d'alimentation de l'appareil de levage), y compris l'alimentation de puissance et les alimentations de commande situées à l'extérieur de l'appareil de levage, par exemple les câbles souples, les câbles conducteurs ou les barres conductrices (voir Figure 3). Elle s'applique aux équipements ou parties d'équipements dont la tension n'excède pas 1 000 V en courant alternatif et 1 500 V en courant continu entre phases, et dont la fréquence nominale n'excède pas 200 Hz. Les appareils de levage comprennent les grues de tous types, les treuils de tous types et les machines de stockage et d'extraction. Les modifications techniques significatives par rapport à l'édition précédente sont:
- la suppression de l'Article 11 de l'édition précédente;
- la modification de la structure de la liaison équipotentielle (Article 8);
- la séparation des fonctions de commande (Article 9) et des appareils (Article 10);
- la structure de la documentation technique (Article 17);
- la vérification de la protection par coupure automatique de l'alimentation (18.2);
- le paragraphe 9.2.7 sur les commandes sans fil a été modifié.

General Information

• Status: Published
• Publication Date: 09-Mar-2008
• ICS: 29.020 - Electrical engineering in general
• ICS: 53.020.01 - Lifting appliances in general
• Technical Committee: TC 44 - Safety of machinery - Electrotechnical aspects
• Drafting Committee: MT 60204-32 - TC 44/MT 60204-32
• Current Stage: DELPUB - Deleted Publication
• Start Date: 04-Jul-2023
• Completion Date: 31-Jul-2018

Relations

• Revised: IEC 60204-32:2023 - Safety of machinery - Electrical equipment of machines - Part 32: Requirements for hoisting machines
• Effective Date: 05-Sep-2023
• Revises: IEC 60204-32:1998 - Safety of machinery - Electrical equipment of machines - Part 32: Requirements for hoisting machines
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60204-32
Edition 2.0 2008-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety of machinery – Electrical equipment of machines –
Part 32: Requirements for hoisting machines

Sécurité des machines – Equipement électrique des machines –
Partie 32: Exigences pour les appareils de levage

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
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 la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: 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.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) 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 CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: [e-mail]
Tél.: [phone]
Fax: [phone]
IEC 60204-32
Edition 2.0 2008-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety of machinery – Electrical equipment of machines –
Part 32: Requirements for hoisting machines

Sécurité des machines – Equipement électrique des machines –
Partie 32: Exigences pour les appareils de levage

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XF
CODE PRIX
ICS 29.020; 53.020.01 ISBN 2-8318-9630-4

– 2 – 60204-32 © IEC:2008
CONTENTS
FOREWORD.9
INTRODUCTION.11

1 Scope.14
2 Normative references.15
3 Terms and definitions .18
4 General requirements .26
4.1 General considerations .26
4.2 Selection of equipment .27
4.2.1 General .27
4.2.2 Selection of power contactors .27
4.2.3 Electrical equipment in compliance with the IEC 60439 series .27
4.3 Electrical supply .27
4.3.1 General .27
4.3.2 AC supplies .27
4.3.3 DC supplies .28
4.3.4 On-board power supply .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.30
4.4.4 Humidity .30
4.4.5 Altitude .30
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 .31
4.7 Installation.31
5 Incoming supply conductor terminations and devices for disconnecting and
switching off .31
5.1 Incoming supply conductor terminations.31
5.2 Terminal for connection to the external protective earthing system .31
5.3 Supply disconnecting and switching devices.32
5.3.1 General .32
5.3.2 Type .32
5.3.3 Requirements .34
5.3.4 Operating means .34
5.3.5 Crane-supply-switch.34
5.3.6 Crane-disconnector.35
5.3.7 Crane-switch.36
5.3.8 Special circuits .37
5.4 Devices for switching off for prevention of unexpected start-up.37
5.5 Devices for disconnecting electrical equipment .38
5.6 Protection against unauthorized, inadvertent and/or mistaken connection.39
6 Protection against electric shock.39
6.1 General .39

60204-32 © IEC:2008 – 3 –
6.2 Protection against direct contact .39
6.2.1 General .39
6.2.2 Protection by enclosures .39
6.2.3 Protection by insulation of live parts .40
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 Protection against indirect contact .41
6.3.1 General .41
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 .43
7 Protection of equipment .43
7.1 General .43
7.2 Overcurrent protection .44
7.2.1 General .44
7.2.2 Supply conductors .44
7.2.3 Power circuits .44
7.2.4 Control circuits.45
7.2.5 Socket outlets and their associated conductors .45
7.2.6 Lighting circuits.45
7.2.7 Transformers .45
7.2.8 Location of overcurrent protective devices.45
7.2.9 Overcurrent protective devices.45
7.2.10 Rating and setting of overcurrent protective devices.46
7.3 Protection of motors against overheating .46
7.3.1 General .46
7.3.2 Overload protection.47
7.3.3 Over-temperature protection .47
7.3.4 Current limiting protection .47
7.4 Abnormal temperature protection .47
7.5 Protection against supply interruption or voltage reduction and subsequent
restoration .47
7.6 Motor overspeed protection.48
7.7 Earth fault/residual current protection.48
7.8 Phase-sequence protection.48
7.9 Protection against switching surges and lightning.48
8 Equipotential bonding .49
8.1 General .49
8.2 Protective bonding circuit.51
8.2.1 General .51
8.2.2 Protective conductors .51
8.2.3 Continuity of the protective bonding circuit .52
8.2.4 Exclusion of switching devices from the protective bonding circuit .52
8.2.5 Parts that need not be connected to the protective bonding circuit .53
8.2.6 Protective conductor connecting points .53

– 4 – 60204-32 © IEC:2008
8.2.7 Additional protective bonding requirements for electrical equipment
having earth leakage currents higher than 10 mA a.c. or d.c.53
8.3 Functional bonding .54
8.4 Measures to limit the effects of high leakage current .54
9 Control circuits and control functions.54
9.1 Control circuits .54
9.1.1 Control circuit supply .54
9.1.2 Control circuit voltages.54
9.1.3 Protection .55
9.2 Control functions .55
9.2.1 Start functions .55
9.2.2 Stop functions.55
9.2.3 Operating modes .55
9.2.4 Suspension of safeguarding .55
9.2.5 Operation .56
9.2.6 Other control functions.58
9.2.7 Cableless controls .59
9.3 Protective interlocks .61
9.3.1 Reclosing or resetting of an interlocking safeguard.61
9.3.2 Exceeding operating limits .61
9.3.3 Operation of auxiliary functions .62
9.3.4 Interlocks between different operations and for contrary motions .62
9.3.5 Reverse current braking.62
9.4 Control functions in the event of failure .62
9.4.1 General requirements .62
9.4.2 Measures to minimize risk in the event of failure .63
9.4.3 Protection against mal-operation due to earth faults, voltage
interruptions, and loss of circuit continuity .64
9.4.4 Protection against mal-operation of a motion control system.66
10 Operator interface and hoisting machine mounted control devices.66
10.1 General .66
10.1.1 General device requirements .66
10.1.2 Location and mounting.66
10.1.3 Protection .67
10.1.4 Position sensors .67
10.1.5 Portable and pendant control stations .67
10.2 Push-buttons .67
10.2.1 Colours.67
10.2.2 Markings.68
10.3 Indicator lights and displays .69
10.3.1 General .69
10.3.2 Colours.69
10.3.3 Flashing lights and displays .70
10.4 Illuminated push-buttons.70
10.5 Rotary control devices .70
10.6 Start devices .70
10.7 Emergency stop devices .70
10.7.1 Location of emergency stop devices.70
10.7.2 Types of emergency stop device .71

60204-32 © IEC:2008 – 5 –
10.7.3 Colour of actuators .71
10.7.4 Local operation of the crane-supply-switch and the crane-disconnector
to effect emergency stop.71
10.8 Emergency switching-off devices .71
10.8.1 Location of emergency switching-off devices .71
10.8.2 Types of emergency switching off device.71
10.8.3 Colour of actuators .72
10.8.4 Local operation of the crane-supply-switch and the crane-disconnector
to effect emergency switching off .72
10.9 Enabling control device.72
11 Controlgear: location, mounting, and enclosures .72
11.1 General requirements .72
11.2 Location and mounting.73
11.2.1 Accessibility and maintenance.73
11.2.2 Physical separation or grouping .73
11.2.3 Heating effects .74
11.3 Degrees of protection .74
11.4 Enclosures, doors and openings .74
11.5 Access to switchgear and to controlgear .75
11.5.1 General .75
11.5.2 Access to gangways .75
11.5.3 Gangways in front of switchgear and controlgear.76
11.5.4 Gangway and door restrictions .76
12 Conductors and cables .76
12.1 General requirements .76
12.2 Conductors.76
12.3 Insulation.77
12.4 Current-carrying capacity in normal service.78
12.5 Voltage drop.79
12.6 Flexible cables.80
12.6.1 General .80
12.6.2 Mechanical rating.80
12.6.3 Current-carrying capacity of cables wound on drums .80
12.7 Conductor wires, conductor bars and slip-ring assemblies.81
12.7.1 Protection against direct contact .81
12.7.2 Protective conductor circuit .83
12.7.3 Protective conductor current collectors.83
12.7.4 Removable current collectors with a disconnector function .83
12.7.5 Clearances in air.83
12.7.6 Creepage distances .83
12.7.7 Conductor system sectioning .84
12.7.8 Construction and installation of conductor wire, conductor bar systems
and slip-ring assemblies .84
13 Wiring practices.84
13.1 Connections and routing .84
13.1.1 General requirements .84
13.1.2 Conductor and cable runs .85
13.1.3 Conductors of different circuits.85
13.1.4 Connection between pick-up and pick-up converter of an inductive
power supply system.85

– 6 – 60204-32 © IEC:2008
13.2 Identification of conductors .86
13.2.1 General requirements .86
13.2.2 Identification of the protective conductor .86
13.2.3 Identification of the neutral conductor.86
13.2.4 Identification by colour .86
13.3 Wiring inside enclosures.87
13.4 Wiring outside enclosures.87
13.4.1 General requirements .87
13.4.2 External ducts.87
13.4.3 Connection to the hoisting machine and to moving elements on the
hoisting machine.88
13.4.4 Interconnection of devices on the hoisting machine .89
13.4.5 Plug/socket combinations .89
13.4.6 Dismantling for shipment.90
13.4.7 Additional conductors.90
13.5 Ducts, connection boxes and other boxes .90
13.5.1 General requirements .90
13.5.2 Percentage fill of ducts .91
13.5.3 Rigid metal conduits and fittings.91
13.5.4 Flexible metal conduits and fittings.91
13.5.5 Flexible non-metallic conduits and fittings .91
13.5.6 Cable trunking systems.91
13.5.7 Hoisting machine compartments and cable trunking systems.92
13.5.8 Connection boxes and other boxes.92
13.5.9 Motor connection boxes .92
14 Electric motors and associated equipment .92
14.1 General requirements .92
14.2 Motor enclosures .92
14.3 Motor dimensions .92
14.4 Motor mounting and compartments .92
14.5 Criteria for motor selection.93
14.6 Protective devices for mechanical brakes.93
14.7 Electrically operated mechanical brakes.93
15 Accessories and lighting .94
15.1 Accessories.94
15.2 Local lighting on the hoisting machine and for the equipment .94
15.2.1 General .94
15.2.2 Supply .94
15.2.3 Protection .95
15.2.4 Fittings .95
16 Marking, warning signs and reference designations.95
16.1 General .95
16.2 Warning signs .95
16.2.1 Electric shock hazard.95
16.2.2 Hot surfaces hazard.95
16.3 Functional identification .96
16.4 Marking of equipment .96
16.5 Reference designations .96
17 Documentation .96

60204-32 © IEC:2008 – 7 –
17.1 General .96
17.2 Information to be provided .97
17.3 Requirements applicable to all documentation.97
17.4 Installation documents .98
17.5 Overview diagrams and function diagrams .98
17.6 Circuit diagrams .99
17.7 Operating manual .99
17.8 Maintenance manual.99
17.9 Parts list .99
18 Verification .100
18.1 General . 100
18.2 Verification of conditions for protection by automatic disconnection of supply . 100
18.2.1 General . 100
18.2.2 Test methods in TN-systems.100
18.2.3 Application of the test methods for TN-systems . 101
18.3 Insulation resistance tests . 103
18.4 Voltage tests .103
18.5 Protection against residual voltages . 104
18.6 Functional tests .104
18.7 Retesting. 104

Annex A (normative) Protection against indirect contact in TN-systems. 105
Annex B (informative) Inquiry form for the electrical equipment of hoisting machines . 109
Annex C (informative) Current-carrying capacity and overcurrent protection of
conductors and cables in the electrical equipment of machines. 112
Annex D (informative) Conductor selection for intermittent duty . 117
Annex E (informative) Explanation of emergency operation functions. 120
Annex F (informative) Comparison of typical conductor cross-sectional areas . 121

Bibliography . 123

Index . 128

Figure 1 – Block diagram of combined working cranes in a typical material handling
system in a seaport .12
Figure 2 – Block diagram of a typical crane and its associated electrical equipment .13
Figure 3 – Examples of electrical supply systems .33
Figure 4 – Example of equipotential bonding for electrical equipment of a hoisting
machine.50
Figure 5 – Protection against mal-operation due to earth faults – Method a).65
Figure 6 – Protection against mal-operation due to earth faults – Method b).65
Figure 7 – Limits of arm's reach .82
Figure A.1 – Typical arrangement for fault loop impedance measurement . 108
Figure C.1 – Methods of conductor and cable installation independent of number of
conductors/cables . 113
Figure C.2 – Parameters of conductors and protective devices . 115

– 8 – 60204-32 © IEC:2008
Figure D.1 – Example of current and time of the segments of the operating cycle of a
variable speed a.c. hoist drive . 119

Table 1 – Minimum cross-sectional area of the external protective copper conductor .32
Table 2 – Colour-coding for push-button actuators and their meanings .68
Table 3 – Symbols for push-buttons .69
Table 4 – Colours for indicator lights and their meanings with respect to the condition of
the hoisting machine .69
Table 5 – Minimum cross-sectional areas of copper conductors.77
Table 6 – Classification of conductors .77
Table 7 – Examples of current-carrying capacity (I ) of PVC-insulated copper
z
conductors or cables under steady-state conditions in an ambient air temperature of
+40 °C for different methods of installation .79
Table 8 – Derating factors for cables wound on drums.81
Table 9 – Minimum permitted bending radii for the forced guiding of flexible cables .89
Table 10 – Application of the test methods for TN-systems . 101
Table 11 – Examples of maximum cable length from each protective device to its load . 102
Table A.1 – Maximum disconnecting times for TN systems . 105
Table C.1 – Correction factors. 112
Table C.2 – Derating factors from I for grouping . 114
z
Table C.3 – Derating factors from I for multi-core cables up to 10 mm . 114
z
Table C.4 – Maximum allowable conductor temperatures under normal and short-circuit
conditions . 116
Table D.1 – Correction factor for 10 min cycle . 118
Table D.2 – Thermal time constant of conductors . 118
Table F.1 – Comparison of conductor sizes . 121

60204-32 © IEC:2008 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF MACHINERY –
ELECTRICAL EQUIPMENT OF MACHINES –

Part 32: Requirements for hoisting machines

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) 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60204-32 has been prepared by IEC technical committee 44: Safety
of machinery – Electrotechnical aspects.
This second edition cancels and replaces the first edition published in 1998 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition.
a) Changes to IEC 60204-1, 5th edition (2005), have been incorporated, especially:
– deletion of Clause 11 of the previous edition;
– modification of the structure of equipotential bonding (Clause 8);
– separation of control functions (Clause 9) and devices (Clause 10);
– structure of technical documentation (Clause 17);
– verification of protection by automatic disconnecti
...