IEC 62491 pdf download

IEC 62491 pdf download Industrial systems, installations and equipment and industrial products – Labelling of cables and cores
1 Scope
This standard provides rules and guidelines for the labelling of cables and cores/conductors used in industrial installations, equipment and products, in order to maintain a clear relation between the technical documentation and the actual equipment and for other purposes. The following methods are described and designated:
• use of coloured cables and designated cores;
• additional identification labelling;
• additional connection labelling; and
• additional signal labelling.
The physical design of the labels, the material to be used for the labels as well as cable manufacturers’ product bound marking of cables and cores are not part of this standard.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60445, Basic and safety principles for man-machine interface, marking and identification – Identification of equipment terminals and conductor terminations
IEC 60757, Code for designation of colours
IEC 61 082-1 :2006, Preparation of documents used in electrotechnology – Part 1: Rules
IEC 61 1 75, Industrial systems, installations and equipment and industrial products – Designation of signals
IEC 81 346-1 , Industrial systems, installations and equipment and industrial products – Structuring principles and reference designations – Part 1 : Basic rules (to be published)
IEC 61 666, Industrial systems, installations and equipment and industrial products – Identification of terminals within a system
ISO/IEC 646, Information technology – ISO 7-bit coded character set for information interchange
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
conductor (of a cable)
part of a cable which has the specific function of carrying current
[IEV 461 -01 -01 ]
3.2
cable
assembly of one or more conductors and/or optical fibres, with a protective covering and possibly filling, insulating and protective material
[IEV 1 51 -1 2-38]
3.3
core
assembly comprising a conductor with its own insulation (and screens if any)
[IEV 461 -04-04]
3.4
terminal
conductive part of a device, electric circuit or electric network, provided for connecting that device, electric circuit or electric network to one or more external conductors
[IEV 1 51 -1 2-1 2, modified]
3.5
terminal block
assembly of terminals in a housing or body of insulating material to facilitate interconnection between multiple conductors
[IEV 581 -06-36]
3.6
terminal designation
identifier of a terminal with respect to the object to which it belongs, related to one aspect of the object.
[IEC 61 666, 3.8]
3.7
signal designation
unambiguous identifier of a signal within a system
[IEC 61 1 75, 3.2]