EN IEC 81346-2:2019

SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 81346-2:2009
Industrijski sistemi, inštalacije in oprema ter industrijski izdelki - Načela
strukturiranja in referenčne oznake - 2. del: Razvrščanje objektov v razrede in
njihove kode (IEC 81346-2:2019)
Industrial systems, installations and equipment and industrial products - Structuring
principles and reference designations - Part 2: Classification of objects and codes for
classes (IEC 81346-2:2019)
Industrielle Systeme, Anlagen und Ausrüstungen und Industrieprodukte -
Strukturierungsprinzipien und Referenzkennzeichnung - Teil 2: Klassifizierung von
Objekten und Kennbuchstaben für Klassen (IEC 81346-2:2019)
Systèmes industriels, installations et appareils, et produits industriels - Principes de
structuration et désignations de référence - Partie 2: Classification des objets et codes
pour les classes (IEC 81346-2:2019)
Ta slovenski standard je istoveten z: EN IEC 81346-2:2019
ICS:
01.110 Tehnična dokumentacija za Technical product
izdelke documentation
29.020 Elektrotehnika na splošno Electrical engineering in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 81346-2

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2019
ICS 01.110; 29.020 Supersedes EN 81346-2:2009 and all of its amendments
and corrigenda (if any)
English Version
Industrial systems, installations and equipment and industrial
products - Structuring principles and reference designations -
Part 2: Classification of objects and codes for classes
(IEC 81346-2:2019)
Systèmes industriels, installations et appareils, et produits Industrielle Systeme, Anlagen und Ausrüstungen und
industriels - Principes de structuration et désignations de Industrieprodukte - Strukturierungsprinzipien und
référence - Partie 2: Classification des objets et codes pour Referenzkennzeichnung - Teil 2: Klassifizierung von
les classes Objekten und Kennbuchstaben für Klassen
(IEC 81346-2:2019) (IEC 81346-2:2019)
This European Standard was approved by CENELEC on 2019-07-23. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 81346-2:2019 E

European foreword
The text of document 3/1393/FDIS, future edition 2 of IEC 81346-2, prepared by IEC/TC 3
"Information structures and elements, identification and marking principles, documentation and
graphical symbols" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-04-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-07-23
document have to be withdrawn
This document supersedes EN 81346-2:2009 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 81346-2:2019 was approved by CENELEC as a European
Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60898 (series)  NOTE  Harmonized as EN 60898 (series)
Harmonized as EN ISO 12006-2 (not
ISO 12006-2:2015 NOTE
modified)
Under preparation. Stage at the time of publication: prEN ISO 12006-2:2019.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 81346-1 2009 Industrial systems, installations and EN 81346-1 2009
equipment and industrial products -
Structuring principles and reference
designations - Part 1: Basic rules

IEC 81346-2
Edition 2.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL STANDARD
NORME HORIZONTALE
Industrial systems, installations and equipment and industrial products –

Structuring principles and reference designations –

Part 2: Classification of objects and codes for classes

Systèmes industriels, installations et appareils, et produits industriels –

Principes de structuration et désignations de référence –

Partie 2: Classification des objets et codes pour les classes

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 01.110; 29.020 ISBN 978-2-8322-7001-1

– 2 – IEC 81346-2:2019 © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Classification principles . 7
4.1 General . 7
4.2 Relation between classification and composition . 8
4.3 Classification schemes of this document . 8
5 Classification scheme for the inherent function of objects . 9
5.1 General . 9
5.2 Entry classes . 9
5.3 Complete classification scheme . 10
6 Classification of spaces . 69
7 Classification of objects applicable for infrastructure . 79
Annex A (informative) Classification criteria for objects . 82
A.1 General . 82
A.2 Structure of classes and subclasses . 82
A.3 Definition of classes . 83
Annex B (informative) Object classes related to a generic process . 84
Annex C (informative) Object classes related to objects in a generic infrastructure . 85
Annex D (informative) Comparison between Tables 1, 2 and 3 of this document and
Tables 1 and 2 of IEC 81346-2:2009 . 87
Annex E (informative) Basic requirements for the development of IEC 81346-2 . 91
Bibliography . 92

Figure 1 – Illustration of a classification hierarchy and a composition hierarchy . 8
Figure A.1 – Illustration of class hierarchy . 83
Figure B.1 – Object classes related to a generic process . 84
Figure C.1 – Object classes related to objects in a generic infrastructure . 86

Table 1 – Entry classes . 10
Table 2 – First two levels of the classification scheme for inherent function of objects . 11
Table 3 – Complete classification scheme for inherent function of objects. 26
Table 4 – Classification scheme for spaces. 70
Table 5 – Classes of infrastructure objects . 80
Table 6 – Examples of branch-related classes B to U of Table 5 . 81
Table D.1 – Comparison between Table 1 of the current edition and Table 1 of IEC
81346-2:2009. 87
Table D.2 – Comparison between Table 2 and Table 3 of the current edition and Table
2 of IEC 81346-2:2009 . 87

IEC 81346-2:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL SYSTEMS, INSTALLATIONS
AND EQUIPMENT AND INDUSTRIAL PRODUCTS –
STRUCTURING PRINCIPLES AND REFERENCE DESIGNATIONS –

Part 2: Classification of objects and codes for classes

FOREWORD
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