oSIST prEN 81346-2:2025
(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
Industrielle Systeme, Anlagen und Ausrüstungen und Industrieprodukte - Strukturierungsprinzipien und Referenzkennzeichnung - Teil 2: Klassifizierung von Objekten und Kennbuchstaben für Klassen
Systèmes, installations et équipements industriels, et produits industriels - Principes de structuration et désignations de référence - Partie 2: Classification des objets et codes pour les classes
Industrijski sistemi, inštalacije in oprema ter industrijski izdelki - Načela strukturiranja in referenčne oznake - 2. del: Razvrščanje objektov v razrede in njihove kode
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Industrijski sistemi, inštalacije in oprema ter industrijski izdelki - Načela
strukturiranja in referenčne oznake - 2. del: Razvrščanje objektov v razrede in
njihove kode
Industrial systems, installations and equipment and industrial products - Structuring
principles and reference designations - Part 2: Classification of objects and codes for
classes
Industrielle Systeme, Anlagen und Ausrüstungen und Industrieprodukte -
Strukturierungsprinzipien und Referenzkennzeichnung - Teil 2: Klassifizierung von
Objekten und Kennbuchstaben für Klassen
Systèmes, installations et équipements industriels, et produits industriels - Principes de
structuration et désignations de référence - Partie 2: Classification des objets et codes
pour les classes
Ta slovenski standard je istoveten z: prEN 81346-2:2025
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.
3/1737/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 81346-2 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-08-01 2025-10-24
SUPERSEDES DOCUMENTS:
3/1689/CD, 3/1736/CC
IEC TC 3 : DOCUMENTATION, GRAPHICAL SYMBOLS AND REPRESENTATIONS OF TECHNICAL INFORMATION
SECRETARIAT: SECRETARY:
Sweden Mr Mikael Törnkvist
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 3 Horizontal
TC 8,TC 9,SC 17C,TC 22,SC 22F,SC 22H,TC 31,TC
44,SC 45A,TC 57,TC 64,TC 65,SC 65A,SC 65E,TC
69,TC 82,TC 88,TC 120,SC 121A,SC 121B,TC
122,PC 126,PC 127,SyC SM,SyC Smart Cities,SyC
Smart Energy,ISO/IEC JTC 1/SC 25
ASPECTS CONCERNED:
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submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Industrial systems, installations and equipment and industrial products - Structuring principles and
reference designations - Part 2: Classification of objects and codes for classes
PROPOSED STABILITY DATE: 2031
NOTE FROM TC/SC OFFICERS:
this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee
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IEC CDV 81346-2 © IEC 2025
1 CONTENTS
3 CONTENTS . 1
4 FOREWORD . 2
5 INTRODUCTION . 4
6 1 Scope . 5
7 2 Normative references . 5
8 3 Terms and definitions . 5
9 4 Classification principles . 7
10 4.1 General . 7
11 4.2 Relation between classification and composition . 7
12 4.3 Classification schemes of this document . 8
13 5 Classification scheme for the inherent function of objects . 8
14 5.1 General . 8
15 5.2 Complete classification scheme . 10
16 6 Classification of constructions and infrastructure . 56
17 6.1 General . 56
18 6.2 Classification of construction complexes . 57
19 6.3 Classification of construction entities . 58
20 7 Classification of spaces . 67
21 7.1 General . 67
22 7.2 Classification of spaces according to their intended activity . 67
23 Annex A (informative) Classification criteria for objects . 77
24 A.1 General . 77
25 A.2 Structure of classes and subclasses . 77
26 A.3 Definition of classes . 78
27 Annex B (informative) Object classes related to a generic process . 79
28 Annex C (informative) Basic requirements for the development of IEC 81346-2 . 80
29 Bibliography . 81
31 Figure 1 – Illustration of a classification hierarchy and a composition hierarchy . 7
32 Figure A.1 – Illustration of class hierarchy . 78
33 Figure B.1 – Object classes related to a generic process . 79
35 Table 1 – Entry classes for inherent function. 9
36 Table 2 – Complete classification scheme for inherent function of objects. 10
37 Table 3 – Classes of construction complexes . 57
38 Table 4 – Classes of construction entities . 58
39 Table 5 – Classification scheme for spaces based on intended activity . 67
IEC CDV 81346-2 © IEC 2025
44 INTERNATIONAL ELECTROTECHNICAL COMMISSION
45 ____________
47 INDUSTRIAL SYSTEMS, INSTALLATIONS
48 AND EQUIPMENT AND INDUSTRIAL PRODUCTS –
49 STRUCTURING PRINCIPLES AND REFERENCE DESIGNATIONS –
51 Part 2: Classification of objects and codes for classes
53 FOREWORD
54 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
55 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
56 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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81 Publications.
82 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
83 indispensable for the correct application of this publication.
84 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
85 rights. IEC shall not be held responsible for identifying any or all such patent rights.
86 International Standard IEC 81346-2 has been prepared by IEC technical committee 3:
87 Documentation, graphical symbols and representations of technical information, in cooperation
88 with ISO technical committee 10: Technical product documentation.
89 It is published as a double logo standard.
90 It has the status of a horizontal standard in accordance with IEC Guide 108.
91 This third edition cancels and replaces the second edition published in 2019. This edition
92 constitutes a technical revision.
93 This edition includes the following significant technical changes with respect to the previous
94 edition:
95 a) existing class definitions have been reviewed and further clarified;
IEC CDV 81346-2 © IEC 2025
96 b) Table 2 has been updated to include the information from the former Table 2;
97 c) Table 2 has been further updated with the addition of new classes, modification of class
98 names, and identification of obsolete classes in greyscale font.
99 d) Table 3 has been similarly updated with the addition of new classes, modification of class
100 names, and identification of obsolete classes in greyscale font.
101 e) additional examples have been added to several classes;
102 f) a new classification scheme for construction complexes and construction entities has been
103 added as Table 4 and Table 5, respectively, replacing the corresponding tables in ISO
104 81346-10.
105 g) the former clause 7 "Classification of objects applicable for infrastructure" and the former
106 Annex C "Object classes related to objects in a generic infrastructure" have been deleted
107 following the introduction of ISO 81346-10, ISO 81346-12 and IEC 81346-14;
108 h) the former Annex D "Comparison between Tables 1, 2 and 3 of IEC 81346-2:2019 and
109 Tables 1 and 2 of IEC 81346-2:2009" as this document is a revision of IEC 81346-2:2019
110 and therefore not necessary to maintain.
111 The text of this International Standard is based on the following documents:
FDIS Report on voting
3/xxx/FDIS 3/xxxx/RVD
113 Full information on the voting for the approval of this International Standard can be found in the
114 report on voting indicated in the above table.
115 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
116 A list of all parts in the IEC 81346 series, published under the general title Industrial systems,
117 installations and equipment and industrial products – Structuring principles and reference
118 designations, can be found on the IEC website.
119 The committee has decided that the contents of this document will remain unchanged until the
120 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
121 the specific document. At this date, the document will be
122 • reconfirmed,
123 • withdrawn,
124 • replaced by a revised edition, or
125 • amended.
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