SIST ISO 81346-10:2023

INTERNATIONAL ISO
STANDARD 81346-10
First edition
2022-08
Industrial systems, installations and
equipment and industrial products —
Structuring principles and reference
designations —
Part 10:
Power supply systems
Systèmes industriels, installations et appareils, et produits
industriels — Principes de structuration et désignations de
référence —
Partie 10: Centrales électriques
Reference number
© ISO 2022
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Published in Switzerland
ii
Contents Page
Foreword .v
Introduction . vi
1 S c op e . 1
2 Nor m at i ve r ef er enc e s . 1
3 Terms and definitions . 1
4 C onc ep t s . 3
4.1 General . 3
4 . 2 Obje c t . 3
4 . 3 A sp e c t . 3
4.4 Systems . 3
4.4.1 General . 3
4.4.2 P ower supply systems . 3
4.4.3 Technical systems . 4
4.4.4 C omponent systems . . 4
4 . 5 St r uc t u r i n g . 4
4 . 6 F u nc t ion . 4
4.7 Products and components . 4
4 . 8 L o c at ion . 4
4.8.1 General . 4
4.8.2 Construction complexes . 4
4 . 8 . 3 C on s t r uc t ion ent it ie s . 5
4 . 8 .4 C on s t r uc t ion s p ac e s . 5
4.9 Types . 5
4.10 O bject occurrences and product individuals . 5
4.11 R elations between concepts . 5
4.12 Ma n a gement a s p e c t . 5
5 S t r uc t u r i n g pr i nc iple s. 5
5.1 G eneral . 5
5 . 2 For m i n g s t r uc t u r e s . 5
5 . 3 F u nc t ion- or ient e d s t r uc t u r e . 6
5 .4 P r o duc t- or ient e d s t r uc t u r e. 6
5 . 5 L o c at ion- or ient e d s t r uc t u r e . 6
5.6 T ype-oriented structure . 6
5.7 S tructures based on “other aspects” . 7
5.8 S tructures based on more than one aspect . 7
6 Construction of reference designations . 7
6.1 General . 7
6.2 F ormat of reference designations . 7
6 . 2 .1 Si n g le le vel . 7
6. 2. 2 Mul t i-le vel . 7
6.2.3 U se of letter codes . 7
6.3 D ifferent structures within the same aspect . 10
7 Re ference designation set .10
8 Designation of locations .11
9 P resentation of reference designations .11
10 L ab el l i n g .11
11 Designation of properties .11
12 Application of the reference designation system .12
13 A pplication of annexes in IEC 81346-1 .14
iii
Annex A (informative) Application of annexes in IEC 81346-1 .15
Annex B (normative) Classification letter codes for systems .16
Annex C (normative) Classification letter codes for constructions .22
Annex D (informative) Examples of application .35
Annex E (informative) Mapping of letter codes between ISO/TS 81346-10:2015 and this
document .39
Bibliography . 44
iv
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 10, Technical product documentation,
Subcommittee SC 10, Process plant documentation, in cooperation with the Technical Committee
IEC/TC 3, Information structures and elements, identification and marking principles, documentation and
graphical symbols.
This document cancels and replaces ISO/TS 81346-10:2015, which has been technically revised.
The main changes are as follows:
— converted to an International Standard;
— structure adapted to tha
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