EN IEC 81346-2:2019
(Main)Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Part 2: Classification of objects and codes for classes
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 establishes classification schemes with defined object classes and their associated letter codes, and is primarily intended for use in reference designations and for designation of generic types. The classification schemes are applicable for objects in all technical disciplines and all branches of industry. IEC 81346-2:2019 is a horizontal publication also intended for for use by technical committees in preparation of publications related to reference designations in accordance with the principles laid down in IEC Guide 108. IEC 81346-2:2019 cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) The entry classes of the classification scheme have been defined to reflect the “inherent function” of the object classified; b) The classes are defined to align with the principles of ISO 22274 and ISO 704; c) A three-level classification scheme has been defined, which provides a greater flexibility for the designer in some technical fields; d) Classes are defined by their definition and provided with a preferred term. Examples are provided if needed; e) A separate classification scheme for spaces has been provided.
Industrielle Systeme, Anlagen und Ausrüstungen und Industrieprodukte - Strukturierungsprinzipien und Referenzkennzeichnung - Teil 2: Klassifizierung von Objekten und Kennbuchstaben für Klassen
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 établit des plans de classification et définit les classes d’objets ainsi que leurs lettres codes associées, et est principalement destinée à un usage dans les désignations de référence et pour la désignation des types génériques. Les plans de classification s’appliquent aux objets appartenant à toutes les disciplines techniques ainsi qu’à toutes les branches d'industrie. IEC 81346-2:2019 est une publication horizontale également destinée à être utilisée par les comités d’études pour l’établissement de publications liées aux désignations de référence conformément aux principes exposés dans le Guide IEC 108. IEC 81346-2:2019 annule et remplace la première édition parue en 2009. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: a) Les classes d’entrée du plan de classification ont été définies afin de refléter la «fonction intrinsèque» de l’objet classé; b) Les classes sont définies de sorte à s’aligner sur les principes définis dans l’ISO 22274 et l’ISO 704; c) Un plan de classification à trois niveaux a été défini afin de garantir au concepteur une plus grande latitude dans certains domaines techniques; d) Les classes sont définies avec un terme préférentiel. Des exemples sont fournis, si nécessaire; e) Un plan de classification distinct a été fourni pour les espaces.
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)
Ta standard vzpostavlja sheme razvrščanja z definiranimi razredi predmetov in pripadajočimi kodami ter je namenjen predvsem za uporabo v referenčnih poimenovanjih in za poimenovanje generičnih vrst. Sheme razvrščanja se uporabljajo za predmete v vseh tehničnih disciplinah in vseh panogah industrije. Dokument je horizontalna publikacija, namenjena tudi tehničnim odborom za pripravo publikacij, povezanih z referenčnimi oznakami v skladu z načeli vodila IEC 108.
General Information
Relations
Standards Content (Sample)
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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property
...
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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by inde
...
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