IEC TR 62687:2015

IEC TR 62687 ®
Edition 2.0 2015-12
TECHNICAL
REPORT
colour
inside
Graphical symbols for use on equipment – Vocabulary
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IEC TR 62687 ®
Edition 2.0 2015-12
TECHNICAL
REPORT
colour
inside
Graphical symbols for use on equipment – Vocabulary

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 01.080.40 ISBN 978-2-8322-3042-8

– 2 – IEC TR 62687:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
Annex A (informative) Some terms explained by examples . 10
Bibliography . 13

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT –
VOCABULARY
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
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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
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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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The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 62687, which is a technical report, has been prepared by subcommittee 3C: Graphical
symbols for use on equipment, of IEC technical committee 3: Information structures,
documentation and graphical symbols.
This second edition cancels and replaces the first edition published in 2011. This edition
constitutes a technical revision and includes the following significant technical changes with
respect to the previous edition:
a) The title has changed from "terminology" to "vocabulary";
b) Annex A has been added.
– 4 – IEC TR 62687:2015 © IEC 2015
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
3C/2091/DTR 3C/2116/RVC
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
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.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
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INTRODUCTION
The publications cited in the Bibliography, published by IEC, ISO and ITU constitute the
source for the glossary in this Technical report.
The terms are primarily collected from Clause 3, “Terms and definitions” of these publications
but in some cases terms are also taken from other parts of these publications.

– 6 – IEC TR 62687:2015 © IEC 2015
GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT –
VOCABULARY
1 Scope
This Technical Report contains a collection of terms (glossary) used in IEC, ISO and ITU
publications in the field of graphical symbols for use on equipment including some related
fields.
Some terms are annotated and/or modified for the purpose of clarification.
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.
None.
3 Terms and definitions
For the pur
...