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BS EN IEC 60445:2021

BS EN IEC 60445:2021

$142.49

Basic and safety principles for man-machine interface, marking and identification. Identification of equipment terminals, conductor terminations and conductors

Published By Publication Date Number of Pages
BSI 2021 32
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This document applies to the identification and marking of terminals of electrical equipment such as resistors, fuses, relays, contactors, transformers, rotating machines and, wherever applicable, to combinations of such equipment (e.g. assemblies), and it also applies to the identification of terminations of certain designated conductors. It also provides general rules for the use of certain colours or alphanumeric notations to identify conductors with the aim of avoiding ambiguity and ensuring safe operation. These conductor colours and alphanumeric notations are intended to be applied on cores, busbars, and electrical equipment, and in cables or installations.

This basic safety publication focusing on safety essential requirements is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51 .

It is not intended for use by manufacturers or certification bodies. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements of this basic safety publication will not apply unless specifically referred to or included in the relevant publications.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
3 Terms and definitions
15 4 Methods of identification
5 Application of identification means
16 6 Identification by colours
6.1 General
6.2 Use of single colours
6.2.1 The use of the single colours GREEN and YELLOW
17 6.2.2 Neutral or mid-point conductor
6.2.3 Line conductor in AC system
6.2.4 Line conductor in DC system
6.2.5 Functional earthing conductor
6.3 Use of bi-colour combinations
6.3.1 Permitted colours
6.3.2 Protective conductor
18 6.3.3 PEN conductor
6.3.4 PEL conductor
19 6.3.5 PEM conductor
6.3.6 Protective bonding conductor
7 Identification by alphanumeric notation
7.1 General
7.2 Equipment terminal identification – Marking principles
20 Figure 1 – Single element with two terminals
Figure 2 – Single element with four terminals: Two endpointsand two intermediate points
Figure 3 – Three-phase equipment with six terminals
21 Figure 4 – Three-element equipment with twelve terminals: Six endpoints and six intermediate points
Figure 5 – Equipment with groups of elements
22 7.3 Identification of certain designated conductors
7.3.1 General
7.3.2 Neutral conductor
7.3.3 Protective conductor
7.3.4 PEN conductor
7.3.5 PEL conductor
7.3.6 PEM conductor
7.3.7 Protective bonding conductor
Figure 6 – Interconnection of equipment terminals and certain designated conductors
23 7.3.8 Functional earthing conductor
7.3.9 Functional bonding conductor
7.3.10 Mid-point conductor
7.3.11 Line conductor
7.3.12 System-referencing-conductor
24 Annex A (informative) Colours, alphanumeric notations and graphical symbols used for identification of conductors and terminals
Table A.1 – Colours, alphanumeric notations and graphical symbols used for identification of conductors and terminals
26 Annex B (informative) List of notes concerning particular conditions in certain countries
31 Bibliography

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BS EN IEC 60445:2021
$142.49