IEC 60445
Edition 5.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Basic and safety principles for man-machine interface, marking and
identification –
Identification of equipment terminals, conductor terminations and conductors
Principes fondamentaux et de sécurité pour les interfaces homme-machines, le
marquage et l’identification –
Identification des bornes de matériels, des extrémités de conducteurs et des
conducteurs
IEC 60445:2010
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IEC 60445
Edition 5.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Basic and safety principles for man-machine interface, marking and
identification –
Identification of equipment terminals, conductor terminations and conductors
Principes fondamentaux et de sécurité pour les interfaces homme-machines, le
marquage et l’identification –
Identification des bornes de matériels, des extrémités de conducteurs et des
conducteurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
T
ICS 29.020
PRICE CODE
CODE PRIX
ISBN 978-2-88912-166-3
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE S
É
CURIT
É
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
®
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inside
– 2 – 60445 © IEC:2010
CONTENTS
FOREWORD...........................................................................................................................4
INTRODUCTION.....................................................................................................................6
1 Scope...............................................................................................................................7
2 Normative references .......................................................................................................7
3 Terms and definitions .......................................................................................................7
4 Methods of identification...................................................................................................9
5 Application of identification means .................................................................................10
6 Identification by colours..................................................................................................10
6.1 General .................................................................................................................10
6.2 Use of single colours.............................................................................................11
6.2.1 Permitted colours ......................................................................................11
6.2.2 Neutral or mid-point conductors.................................................................11
6.2.3 Line conductors in AC-systems..................................................................11
6.3 Use of bi-colour combinations ...............................................................................11
6.3.1 Permitted colours ......................................................................................11
6.3.2 Protective conductors ................................................................................11
6.3.3 PEN conductors.........................................................................................12
6.3.4 PEL conductors .........................................................................................12
6.3.5 PEM conductors ........................................................................................12
6.3.6 Protective bonding conductors...................................................................13
7 Identification by alphanumeric notation...........................................................................13
7.1 General .................................................................................................................13
7.2 Equipment terminal identification – Marking principles...........................................13
7.3 Identification of certain designated conductors ......................................................16
7.3.1 General .....................................................................................................16
7.3.2 Neutral conductor ......................................................................................16
7.3.3 Protective conductor..................................................................................16
7.3.4 PEN conductor ..........................................................................................16
7.3.5 PEL conductor...........................................................................................16
7.3.6 PEM conductor ..........................................................................................16
7.3.7 Protective bonding conductor ....................................................................16
7.3.8 Protective bonding conductor earthed........................................................16
7.3.9 Protective bonding conductor unearthed....................................................16
7.3.10 Functional earthing conductor....................................................................16
7.3.11 Functional bonding conductor....................................................................16
7.3.12 Mid-point conductor ...................................................................................16
7.3.13 Line conductor...........................................................................................17
Annex A (informative) Colours, alphanumeric notations and graphical symbols used
for identification of conductors / terminals.............................................................................18
Annex B (informative) List of notes concerning certain countries..........................................20
Bibliography..........................................................................................................................24
Figure 1 – Single element with two terminals ........................................................................13
Figure 2 – Single element with four terminals: two endpoints and two intermediate
points ...................................................................................................................................14
Figure 3 – Three-phase equipment with six terminals............................................................14
60445 © IEC:2010 – 3 –
Figure 4 – Three-element equipment with twelve terminals: six endpoints and six
intermediate points ...............................................................................................................14
Figure 5 – Equipment with groups of elements......................................................................15
Figure 6 – Interconnection of equipment terminals and certain designated conductors..........15
Table A.1 – Colours, alphanumeric notations and graphical symbols used for
identification of conductors / terminals ..................................................................................
18