IEC TS 62666:2016

IEC TS 62666 ®
Edition 2.0 2016-08
TECHNICAL
SPECIFICATION
Guidelines for the inclusion of documentation aspects in product standards
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IEC TS 62666 ®
Edition 2.0 2016-08
TECHNICAL
SPECIFICATION
Guidelines for the inclusion of documentation aspects in product standards

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 01.110 ISBN 978-2-8322-3569-0

– 2 – IEC TS 62666:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Principal guidelines . 9
4.1 Adaptation to the needs for the system or product . 9
4.2 Adaptation to the structure of the publication . 9
5 Requirements to be covered . 10
5.1 Information requirements . 10
5.2 Documentation requirements . 11
5.2.1 General . 11
5.2.2 Structuring of the documentation . 12
5.2.3 Identification and classification . 13
5.2.4 Document kinds, their purpose and preparation . 15
5.2.5 Graphical symbols . 15
5.2.6 Characteristic properties and data element types . 16
5.3 Requirements on documentation generated by tools other than CAx tools . 17
Annex A (informative) Example of a clause specifying documentation requirements
for a complex system or product . 18
A.1 Technical documentation . 18
A.2 Information to be provided . 18
A.3 Requirements for documents and documentation . 19
A.3.1 General requirements . 19
A.3.2 Main document . 19
A.3.3 Labelling . 20
A.4 Specific requirements for certain kinds of information . 20
A.4.1 Information on installation and mounting . 20
A.4.2 Information on factory and site testing . 20
A.4.3 Information on function and operation . 20
A.4.4 Information on maintenance . 20
A.4.5 Information on disassembly, recycling and disposal . 20
Annex B (informative) Example of a clause specifying documentation requirements for
a simple (consumer) product . 21
B.1 Technical documentation . 21
B.2 Information to be provided . 21
B.3 Requirements for documents and documentation . 22
B.3.1 General requirements . 22
B.3.2 Labelling . 22
B.3.3 Specific requirements for some kinds of information . 22
Bibliography . 24

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINES FOR THE INCLUSION OF DOCUMENTATION
ASPECTS IN PRODUCT STANDARDS
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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC 62666, which is a technical specification, has been prepared by IEC technical
committee 3: Information structures and elements, identification and marking principles,
documentation and graphical symbols.
This second edition cancels and replaces the first edition published in 2010. This edition
constitutes a technical revision.

– 4 – IEC TS 62666:2016 © IEC 2016
This edition includes the following significant technical changes with respect to the previous
edition:
a) the references to relevant standards have been updated and horizontal standards have
been designated;
b) a new subclause "Identification of equipment, basic and safety principles" has been
added. The reason for this is that a group of standards have been placed under the
responsibility of TC 3.
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
3/1256/DTS 3/1261/RVC
Full information on the voting for the approval of this technical specification 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 website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

INTRODUCTION
This Technical Specification is developed in response to expressed needs for guidelines on
requirements for documentation in product and system standards.
This document is written for the target group Product Committee Secretaries, PT- and
MT-members, etc. It provides some basic information on documentation principles,
explanations and justifications to why the references to documentation standards should be
made. It is assumed that experts developing product standards have not necessarily relevant
documentation aspects as their primary interest. As a consequence, the text may by some be
found too “educational” for a standard. In a guideline it may, however, be more appropriate.
The two annexes are examples intended to be used as templates for how texts should be
i
...