IEC 60793-1-51:2014

IEC 60793-1-51 ®
Edition 2.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibres –
Part 1-51: Measurement methods and test procedures – Dry heat (steady state)
tests
Fibres optiques –
Partie 1-51: Méthodes de mesure et procédures d'essai – Essais de chaleur
sèche (état continu)
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IEC 60793-1-51 ®
Edition 2.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibres –
Part 1-51: Measurement methods and test procedures – Dry heat (steady state)

tests
Fibres optiques –
Partie 1-51: Méthodes de mesure et procédures d'essai – Essais de chaleur

sèche (état continu)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX G
ICS 33.180.10 ISBN 978-2-8322-1375-9

– 2 – 60793-1-51  IEC:2014
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Apparatus . 5
3.1 Chamber . 5
3.2 Other apparatus . 5
4 Sampling and specimens . 6
5 Procedure . 6
5.1 General . 6
5.2 Optical measurements . 6
5.3 Preconditioning . 6
5.4 Conditioning . 6
5.5 Recovery . 7
6 Pass/fail criteria . 7
7 Results . 7
7.1 Information to be provided with each test . 7
7.2 Information to be available upon request . 7
8 Specification information . 7

60793-1-51  IEC:2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 1-51: Measurement methods and test procedures–
Dry heat (steady state) tests
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60793-1-51 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition, published in 2001, and constitutes
a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– harmonizing the content with sectional specifications of relevant fibre types;
– extending the applicability of the document to class C single-mode fibres.

– 4 – 60793-1-51  IEC:2014
The text of this standard is based on the following documents:
CDV Report on voting
86A/1527/CDV 86A/1573/RVC
Full information on the voting for the approval of this standard 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.
A list of all parts in the IEC 60793 series, published under the general title Optical fibres, can
be found on the IEC website.
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.

60793-1-51  IEC:2014 – 5 –
OPTICAL FIBRES –
Part 1-51: Measurement methods and test procedures –
Dry heat (steady state) tests
1 Scope
This part of IEC 60793 provides a practical method for evaluating fibre performance in a
defined environment.
The purpose of this standard is to determine the suitability of optical fibre sub-category A1a to
A1d multimode fibres and class B and C single-mode fibres to withstand the environmental
condition of high temperature (dry heat) which may occur in actual use, storage and/or
transport. The test is primarily intended to permit t
...