IEC 61082-1:2014

IEC 61082-1 ®
Edition 3.0 2014-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Preparation of documents used in electrotechnology –
Part 1: Rules
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IEC 61082-1 ®
Edition 3.0 2014-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Preparation of documents used in electrotechnology –

Part 1: Rules
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 01.110; 29.020 ISBN 978-2-8322-1911-9

– 2 – IEC 61082-1:2014 RLV © IEC 2014
CONTENTS
FOREWORD . 8
INTR ODUCTION . 10
1  Scope . 11
2  Normative references. 11
3  Terms and definitions . 13
3.1  Basic terms . 13
3.2  Terms related to the forms of presentation of information . 15
3.3 Terms related to basic document kinds .
3.3  Terms related to specific document kinds . 16
4  Documentation principles . 17
4.1  General considerations . 17
4.2  Structure of documentation . 17
4.3  Presentation of information . 17
4.4  Document identification and designation . 18
5  Rules for presentation of information . 19
5.1  Legibility . 19
5.2  Text orientation . 19
5.3  Colours, shading and patterns . 20
5.4  Paper page sizes . 20
5.5  Paper page reproduction . 20
5.6  Page identification . 20
5.7  Page lay out . 22
5.7.1  General . 22
5.7.2  Identification area . 22
5.7.3  Content area . 23
5.8  Cross-references . 26
5.9  Hy perlinks . 27
5.10  Line widt hs. 27
5.11  Text fonts . 28
5.12  Symbols . 28
5.12.1  Choice of symbols . 28
5.12.2  Symbol size . 29
5.12.3  Orientation of symbols . 29
5.13  Scales . 30
5.14  Pictorial presentation . 30
5.15  Quantities, units, values and colour codes . 30
5.16  Presentation of ranges and set of elements . 30
5.17  Dimension lines . 32
5.18  Leader lines and reference lines . 32
5.19  Explanatory notes and markings . 33
5.20  Designation of objects . 33
5.20.1  General . 33
5.20.2  Reference designations . 33
5.20.3  Simplified presentation . 34
5.20.4  Cable core designations . 35
5.21  Terminal designations . 35

5.22  Signal designations . 35
6  Document kinds . 35
7  Diagrams . 36
7.1  General . 36
7.1.1  Flow of energy, signal, etc. . 36
7.1.2  Symbols . 36
7.1.3  Connecting lines . 39
7.1.4  Representation of binary logic circuits . 45
7.1.5  Boundary frames . 48
7.1.6  Presentation of reference designations . 48
7.1.7  Presentation of terminal designations . 53
7.1.8  Presentation of signal designations . 53
7.1.9  Method of presentation of multi-phase circuits . 54
7.1.10  Emphasizing of circuits . 55
7.2  Overview diagrams . 55
7.3  Function diagrams . 60
7.3.1  General . 60
7.3.2  Equivalent-circuit diagrams . 60
7.3.3  Logic-function diagram . 60
7.4  Circuit diagrams . 61
7.4.1  General . 61
7.4.2  Layout . 61
7.4.3  Methods for representation of components . 62
7.4.4  Representation of components with movable parts . 67
7.4.5  Representation of supply circuits . 69
7.4.6  Representation of binary logic elements . 70
7.4.7  Symbols with a large number of terminals . 71
7.4.8  Wired functions (wired-AND, wired-OR) . 71
7.5  Connection diagrams. 72
7.5.1  General . 72
7.5.2  Representation of devices, units or assemblies . 73
7.5.3  Representation of terminals . 74
7.5.4  Representation of cables and its constituent cores . 74
7.5.5  Representation of conductors . 74
7.5.6  Simplified presentation . 76
8  Drawings . 77
8.1  General . 77
8.2  Requirements on base documents . 77
8.3  Arrangement drawings . 79
9  Tables . 82
9.1  General . 82
9.2  Presentation of reference designations . 82
9.3  Connection tables . 83
10  Charts, gr aphs . 85
10.1  General . 85
10.2  Function charts . 85
10.3  Sequence charts and time sequence charts . 85
11  Structured documentation . 86

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11.1  General . 86
11.2  Presentation of occurrences of an object type in diagrams . 87
11.2.1  General . 87
11.2.2  Using an instance diagram . 87
11.2.3  Using a single symbol . 87
11.3  Referencing . 89
11.4  Document metadata . 91
12  CAx conformance requirements . 91
Annex A (normative) Construction of a symbol for an object which does not have a
symbol in IEC 60617 . 93
A.1  General rules . 93
A.2  Example – Miniature circuit-breaker . 93
A.3  Example – miniature circuit-breaker with an RCD (Residual Current Device) . 96
A.4  Example – RCD (residual current device) / RCM (residual monitoring device) . 97
A.5  Example – PLC . 98
Annex B (informative) Document management information and title blocks . 100
B.1  Presentation of document management information . 100
B.2  Example of the layout of a title block. 101
B.3  Examples of the location of identification areas . 102
Annex C (informative) Document kind designations and content of information . 103
Bibliography . 108

Figure 1 – Overview of standards related to the presentation of information in
document s . . 10
Figure 2 – Documents generated from information stored in a database . 18
Figure 3 – Documents prepared and stored in a database . 18
Figure 4 – Viewing directions of a document . 20
Figure 5 – Examples of documents with document and page id ent i fications . 21
Figure 6 – Example of documents with multiple document identifiers . 21
Figure 7 – Examples of pages with defined identification areas . 22
Figure 8 – Example of a reference grid (Page A3 landscape, module size 2,5 mm,
reference grid 16 M) . 25
Figure 9 – Examples of the application of cross-references . 27
Figure 10 – Example of the use of symbols for fibre optics . 28
Figure 11 – Example of replacing a symbol with a general symbol . 29
Figure 12 – Example of enlarging a symbol . 29
Figure 13 – Turning and/or mirroring of symbol S00055 in IEC 60617 . 30
Figure 14 – Terminators of dimension lines (from ISO 129) . 32
Figure 15 – Examples of leader lines (from ISO 128-22) . 32
Figure 16 – Example of the use of leader lines to connecting lines . 32
Figure 17 – Example of an explanatory note . 33
Figure 18 – Presentation of reference designations and sets of reference designations . 34
Figure 19 – The common initial portion of reference designations . 34
Figure 20 – Examples of cable core designations . 35
Figure 21 – Example of functional grouping and signal flow directions; a control
system. . 36

Figure 22 – Example of symbols and different location of connections . 37
Figure 23 – Simplified presentation . 37
Figure 24 – Simplified presentation of parallel connected identical objects . 38
Figure 25 – Simplified presentation of serial connected identical objects . 38
Figure 26 – Example of cross-references related to detached presentations . 39
Figure 27 – Example for technical data associated with a symbol . 39
Figure 28 – Example of technical data shown inside a symbol . 39
Figure 29 – Symbols representing joining of connecting lines . 40
Figure 30 – Symbol representing the interconnection of crossing connecting lines . 40
Figure 31 – Examples of the joining of connecting lines . 40
Figure 32 – Example of the joining of connecting lines with indication of where the
physical wire goes . . 41
Figure 33 – Example of the joining of connecting lines where the connecting lines
represent bundles of wires . 41
Figure 34 – Different presentation methods for wireless interconnections . 42
Figure 35 – Example of presentations of mechanical links. 42
Figure 36 – Example for avoiding bends and cross-overs . 43
Figure 37 – Spacing of lines . 43
Figure 38 – Examples for technical data associated with connecting lines . 44
Figure 39 – Presentation of bundles . 45
Figure 40 – Indication of sequence within bundles . 45
Figure 41 – Illustration of the terms “states” and “levels” . 46
Figure 42 – Detail of a circuit diagram using positive logic convention . 47
Figure 43 – Detail of a circuit diagram using direct logic polarity convention . 47
Figure 44 – Boundary frame with a reference to another document . 48
Figure 45 – Location of reference designations at a symbol . 49
Figure 46 – Examples of reference designations associated with connecting lines . 49
Figure 47 – Presentation of reference designations at a boundary frame . 50
Figure 48 – Presentation of reference designations including different aspect . 51
Figure 49 – Presentation of reference designation sets at a boundary frame . 51
Figure 50 – Presentation of reference designation . 52
Figure 51 – Presentation of reference designations excluded from concatenation . 52
Figure 52 – Examples for the presentation of terminal designations . 53
Figure 53 – Examples of signal designations associated with connecting lines . 53
Figure 54 – Examples of reference and signal designations ass. with connecting lines . 54
Figure 55 – Presentation of signal designations . 54
Figure 56 – Example for a multi-phase circuit . 55
Figure 57 – Overview diagram for a material handling plant (Example taken from
IEC 61346-1) . 56
Figure 58 – Overview diagram for one conveyer belt function (Example taken from
IEC 61346-1) . 57
Figure 59 – Overview diagram process plant . 58
Figure 60 – Overview diagram of an electrical plant . 59
Figure 61 – Signal flow in a function diagram. 60

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Figure 62 – Example of an equivalent-circuit diagram . 60
Figure 63 – Minimized use of logic negations . 61
Figure 64 – Lining-up of symbols . 62
Figure 65 – Grouping of symbols for functionally related components . 62
Figure 66 – Attached presentation of symbols . 63
Figure 67 – Detached presentation of symbols . 64
Figure 68 – Example of the use of inset tables . 65
Figure 69 – Example of presentation of internal connection . 66
Figure 70 – Repeated presentation of a symbol for a quadruple multiplexer . 66
Figure 71 – Simplified repeated presentation of a symbol for a quadruple multiplexer . 67
Figure 72 – Symbol of a five-position switch supplemented with a graph . 68
Figure 73 – Examples of pilot switch . 68
Figure 74 – Symbol of a pilot switch supplemented with a note . 68
Figure 75 – Orientation of contact symbols . 69
Figure 76 – Representation of a.c. supply circuits . 69
Figure 77 – Representation of d.c. supply circuits . 70
Figure 78 – Examples of use of logic polarity indication . 70
Figure 79 – Examples of mismatched polarity in dications . 70
Figure 80 – Example of a split presentation of a symbol . 71
Figure 81 – Example of a connection diagram . 73
Figure 82 – Example of presentation of termination of a multi-core cable . 74
Figure 83 – Example of cable connections . 75
Figure 84 – Example of connection diagram for a sub-rack . 76
Figure 85 – Example of simplified presentation of a connection diagram . 77
Figure 86 – Example of the use of a base document . 79
Figure 87 – Presentation of technical data . 79
Figure 88 – Examples of the use of symbols for indication mounting methods . 80
Figure 89 – An arrangement drawing the mounting panel of a cubicle . 81
Figure 90 – An arrangement drawing of an industrial plant . 82
Figure 91 – Example setting the common initial portion in the table header . 83
Figure 92 – Example omitting the common initial portion on successive lines . 83
Figure 93 – Example of a terminal-oriented connection table . 84
Figure 94 – Example of a connection table with remote end designations . 84
Figure 95 – Example of a connection-oriented connection table . 85
Figure 96 – Example of a time sequence chart . 86
Figure 97 – Example of an instance diagram of a motor starter . 87
Figure 98 – A symbol for a motor starter . 87
Figure 99 – Example of a document in table form describing the relations between
external terminals of a motor starter to the internal terminals of its components . 88
Figure 100 – A symbol for the motor starter, for single-line presentations . 88
Figure 101 – Example of a document in table form describing the relations between
external terminals of a motor starter to the internal terminals of its components . 89
Figure 102 – Referencing in accordance with IEC 62023 . 90
Figure 103 – Direct referencing . 91

Figure A.1 – The general symbols for an object in IEC 60617 DB . 93
Figure A.2 – Miniature circuit-breaker shown with the symbol for a circuit-breaker . 94
Figure A.3 – Miniature circuit-breaker shown with the general symbol for a switch
qualified with the symbol for automatic t r ipping . 94
Figure A.4 – Miniature circuit-breaker shown with the symbol for a circuit-breaker
qualified with the symbol for automatic t r ipping . 95
Figure A.5 – Miniature circuit-breaker shown with the general symbol for a switch
qualified with the symbols for thermal and electromagnetic effects . 95
Figure A.6 – Miniature circuit-breaker shown with the symbol for a circuit-breaker
qualified with the symbol for thermal and electromagnetic effects . 95
Figure A.7 – Symbol for a miniature circuit-breaker with an RCD, version 1 . 96
Figure A.8 – Symbol for a miniature circuit-breaker with an RCD, version 2 . 96
Figure A.9 – Symbol for a miniature circuit-breaker with an RCD, version 3 . 97
Figure A.10 – Example of a symbol for an RCD . 97
Figure A.11 – Example of a symbol for an RCM . 98
Figure A.12 – Symbols for a PLC . 98
Figure A.13 – A circuit diagram with a symbol of a PLC . 99
Figure B.1 – Example of the arrangement of information in a title block . 101
Figure B.2 – Example of a filled-in title block . 101
Figure B.3 – Examples of locations of identification areas and possible title blocks . 102

Table 1 – Possible distributed logic connections . 72
Table B.1 – Metadata element names. 100
Table C.1 – Recommended document kind designations . 104
Table C.2 – Current document kind designations and replacements . 106

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PREPARATION OF DOCUMENTS USED
IN ELECTROTECHNOLOGY –
Part 1: Rules
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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This redline version of the official IEC Standard allows the user to identify the changes
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International Standard IEC 61082-1 has been prepared by IEC technical committee 3:
Information structures, documentation and graphical symbols.
It has the status of a horizontal standard in accordance with IEC Guide 108.
This third edition cancels and replaces the second edition published in 2006. This edition
constitutes a technical revision and includes the following main technical changes:
a) inclusion of presentation rules for wireless interconnections
b) description of exceptional cases for the application of rules for positioning of reference
designations in diagrams
c) correction of errors and update of the normative references
d) harmonization of definitions with respect to referenced publications.
The text of this standard is based on the following documents:
FDIS Report on voting
3/1189/FDIS 3/1196/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
A list of all the parts in the IEC 61082 series, under the general title Preparation of documents
used in electrotechnology, can be found on the IEC website.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 10 – IEC 61082-1:2014 RLV © IEC 2014
INTRODUCTION
IEC 61082-1 deals with the presentation of information in documents. Part of this information
is described in other International Standards. Figure 1 – Overview of standards related to the
presentation of information in documents provides an overview on the interrelation between
some of these standards.
Symbols
Designation
IEC 81346 ISO / IEC 81714
Structuring principles Design of
and graphical
reference designations symbols
IEC 61666
IEC 61175 IEC 60617 ISO 14617
Identification of
Designation of Graphical symbols Graphical symbols
terminals within a
signals for diagrams for diagrams
system
Documentation rules
IEC 61355 IEC 62023
IEC 82045-1
Classification and Structuring of
Document
designation of technical information
management
documents and documentation
Preparation of documents
IEC 60848 IEC 61082 ISO 5807
IEC 62027 IEC 82079
Preparation of Preparation of Symbols and
Preparation of Preparation of
sequential documents used in conventions for
object lists instructions
function charts electrotechnology
flowcharts
Data organisation
IEC 61360
IEC 82045-2 ISO 10303-210, -212
Data element
Meta data STEP data model
types
IEC
Figure 1 – Overview of standards related to the presentation
of information in documents
Examples in this part of IEC 61082 are intended to illustrate a given rule and are not
necessarily representative of complete documents.

PREPARATION OF DOCUMENTS USED
IN ELECTROTECHNOLOGY –
Part 1: Rules
1 Scope
This part of IEC 61082 provides establishes general rules and guidelines for the presentation
of information in documents, and specific rules for diagrams, drawings and tables used in
electrotechnology.
Excluded from this part of IEC 61082 are rules and guidelines for all kind of audio or video or
tactile presentations.
This horizontal standard is primarily intended for use by technical committees in the
preparation of standards in accordance with the principles laid down in IEC Guide 108.
One of the responsibilities of a technical committee is, wherever applicable, to make use of
horizontal standards in the preparation of its publications. The contents of this horizontal
standard will not apply unless specifically referred to or included in the relevant publications.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60027 (all parts), Letter symbols to be used in electrical technology
IEC 60375:2003, Conventions concerning electric and magnetic circuits
IEC 60757:1983, Code for designation of colours
IEC 60617-DB: 2001, Graphical symbols for diagrams. Available from:

IEC 60848:2002, GRAFCET specification language for sequential function charts
IEC 61175:2005, Industrial systems, installations and equipment and industrial products-
Designation of signals
IEC 61286:2001, Information technology – Coded graphic character set for use in the
preparation of documents used in electrotechnology and for information interchange
IEC 61293:1994, Marking of electrical equipment with ratings related to electrical supply –
Safety requirements
IEC 61355:1997, Classification and designation of documents for plants, systems and
equipment
– 12 – IEC 61082-1:2014 RLV © IEC 2014
IEC 61355-1:2008, Classification and designation of documents for plants, systems and
equipment – Part 1: Rules and classification tables
IEC 61666:1997, Industrial systems, installations and equipment and industrial products –
Identification of terminals within a system
IEC 61804-1:2003, Function blocks (FB) for process and control – Part 1: Overview of system
aspects
IEC 61804-2:2004, Function blocks (FB) for process and control – Part 2: Specification of FB
concept and Electronic Device Description Language (EDDL)
IEC 62023:2000, Structuring of technical information and documentation
IEC 62027:2000, Preparation of object lists, including parts lists
IEC 62079:2001, Preparation of instructions – Structuring, content and presentation
IEC 62491, Industrial systems, installations and equipment and industrial products – Labelling
of cables and cores
IEC 61346-1:1996 IEC 81346-1, Industrial systems, installations and equipment and industrial
products – Structuring principles and reference designations – Part 1: Basic rules
IEC 81714-2:1998 2006, Design of graphical symbols for use in the technical documentation
of products – Part 2: Specification for graphical symbols in a computer-sensible form including
graphical symbols for a reference library, and requirements for their interchange
IEC 82045-1:2001, Document management – Part 1: Principles and methods
IEC 82045-2:2004, Document management – Part 2: Metadata elements and information
reference model
IEC 82079-1, Preparation of instructions for use – Structuring, content and presentation –
Part 1: General principles and detailed requirements
ISO 31 (all parts), Quantities and units
ISO 128-22:1999, Technical drawings – General principles of presentation – Part 22: Basic
conventions and applications for leader lines and reference lines
ISO 128-30:2001, Technical drawings – General principles of presentation – Part 30: Basic
conventions for views
ISO 2594:1972, Building drawings – Projection methods
ISO 3098-5:1997, Technical product documentation – Lettering – Part 5: CAD- lettering of the
Latin alphabet, numerals and marks
ISO 5807:1985, Information processing – Documentation symbols and conventions for data,
program and system flowcharts, program network charts and system resources charts
ISO 5455:1979, Technical drawings – Scales
—————————
Published as a compilation in ISO Standards Handbook, Quantities and units.

ISO 5456-2:1996, Technical drawings – Projection methods – Part 2: O
...