International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 81346-1:2009
Title Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Part 1: Basic rules
Project Number 21719
Abstract/Scope IEC 81346-1:2009, published jointly by IEC and ISO, establishes general principles for the structuring of systems including structuring of the information about systems. Based on these principles, rules and guidance are given for the formulation of unambiguous reference designations for objects in any system. The reference designation identifies objects for the purpose of creation and retrieval of information about an object, and where realized about its corresponding component. This edition includes the following substantial changes with respect to the previous one: - a new introductory clause providing a description and explanation to the concepts used elsewhere in the publication; - a more comprehensive description of the structuring principles and rules for structuring are provided; - 'other aspects' are introduced, and the prefix sign # is assigned to these aspects; - the concept of reference designation group has been deleted; - the specific term 'transition' has been avoided and been replaced by an improved textual description of this phenomenon in annex D; - a new clause about labelling is introduced; - the old annexes have been removed with the exception of the annex showing an example of the application of reference designations within a system; - a new annex explaining the manipulation of objects is introduced; - 4 new annexes are introduced as rearrangement of detailed examples or explanatory information.


Current Stage code 6060
Current Stage code date 2009-10-09
Current Stage code deadline 2010-05-01
Deadline date for vote  


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IEC Technical Body IEC/TC 3
Reference Document IEC 81346-1:2009 (EQV)
ICS 01.110 - Technical product documentation
29.020 - Electrical engineering in general
Keywords Industrial;Structuring principle; Reference designation
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2009-10-09 2010-05-01 export to doc file  EN  FR  DE
5099 2009-08-01 2009-10-01  
5060 2009-07-20 2009-08-03 export to doc file  EN
5020 2009-05-15 2009-07-17  
3090 2009-02-20 2009-03-13  
5060 2008-06-30 2008-07-14 export to doc file  EN
5020 2008-01-25 2008-06-27  
1090 2008-01-22 2008-01-25  

Implementation Dates

date of Ratification (DOR) (1) 2009-08-01
date of Availability (DAV) (2) 2009-10-09
date of Announcement (DOA) (3) 2009-11-01
date of Publication (DOP) (4) 2010-05-01
date of Withdrawal (DOW) (5) 2012-08-01


Supersedes EN 61346-1:1996
Superseded by  
Normative reference (6) ISO/IEC 646:1991

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.