IEC 61300-2-4:2019

IEC 61300-2-4 ®
Edition 2.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-4: Tests – Fibre or cable retention

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-4: Essais – Rétention de la fibre ou du câble

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 61300-2-4 ®
Edition 2.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures –
Part 2-4: Tests – Fibre or cable retention

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures

fondamentales d'essais et de mesures –

Partie 2-4: Essais – Rétention de la fibre ou du câble

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-6383-9

– 2 – IEC 61300-2-4:2019 © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General description . 6
5 Apparatus . 6
5.1 Mandrel . 6
5.2 Holding fixture . 7
5.3 Force generator . 7
5.4 Force gauge . 7
5.5 Alternative apparatus . 7
5.6 Timer . 8
5.7 Measurement equipment . 8
6 Procedure . 8
6.1 Preparation of DUTs . 8
6.2 Pre-conditioning . 8
6.3 Mounting DUT and visual inspection of the mounted DUT . 8
6.4 Initial examination . 8
6.5 Conditioning and optical measurement during the conditioning . 8
6.6 Removal of the test load . 9
6.7 Recovery . 9
6.8 Final examination and performance check . 9
6.9 Final visual inspection . 9
7 Severity . 9
8 Details to be specified . 12
Bibliography . 14

Figure 1 – An example of DUT configuration of retention test . 7

Table 1 – Recommended test severities for connectors, FMC, passive components,
splices, and FMS . 10
Table 2 – Recommended test severities for wall outlets, boxes, OFDM, and closures . 11
Table 3 – Recommended test severities for hardened connectors, street cabinets,
boxes, and closures . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-4: Tests – Fibre or cable retention

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
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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.
International Standard IEC 61300-2-4 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 1995. This edition
includes the following significant technical changes with respect to the previous edition:
a) addition of Clause 2, Normative references;
b) clarification of the test procedures;
c) clarification of the severities;
d) modification of the whole document structure according to the latest ISO/IEC Directives.

– 4 – IEC 61300-2-4:2019 © IEC 2019
The text of this standard is based on the following documents:
FDIS Report on voting
86B/4147/FDIS 86B/4160/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61300-2 series, published under the general title Fibre optic
interconnecting devices and passive components – Basic test and measurement procedures –
Tests, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-4: Tests – Fibre or cable retention

1 Scope
The purpose of this part of IEC 61300 is to ensure that the retention or attachment of the fibre,
cord or cable in a fibre optic device or an enclosure will withstand tensile loads likely to be
applied during normal service.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 61300-1, Fibre optic interconnecting devices and passives components − Basic test and
measurement procedures − Part 1: General and guidance
IEC 61300-2-38, Fibre optic interconnecting devices and passive components − Basic test
and measurement procedures − Part 2-38: Tests − Sealing for pressurized fibre optic closures
IEC 61300-3-1, Fibre optic interconnecting devices and passive components − Basic test and
measurement procedures − Part 3-1: Examinations and measurements − Visual examination
IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of
changes in attenuation and return loss
IEC 61300-3-4, Fibre optic interconnecting devices and passive components − Basic test and
measurement procedures − Part 3-4: Examinations and measurements − Attenuation
IEC 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-28: Examinations and measurements – Transient loss
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

– 6 – IEC 61300-2-4:2019 © IEC 2019
4 General description
The device under test (DUT) is rigidly clamped to a holding fixture, which is shown in Figure 1,
and a tensile load is applied to the fibre, cord or cable. Potential failure modes for this test
include, but are not limited to:
a) cable sheath damage;
b) strength member damage;
c) fibre breakage or damage;
d) cable clamp failure;
e) cable pull-out;
f) loss of optical continuity or loss of sealing of enclosures;
g) change in optical characteristics, such as attenuation or return loss;
h) breaking, excessive movement or damage to the cable sheath, seals, cable clamps.
5 Apparatus
5.1 Mandrel
The diameter D of the mandrel is equal to the greater of 60 mm or 25 times the diameter d of
the fibre, cord or cable. Use an adequate number of turns to prevent slippage. For optical
components, the distance A between the rearmost portion of the cable fixing component of the
DUT and the mandrel tangent point shall be 200 mm ± 50 mm. For closures, the distance A
shall be the greater of 50 times the diameter d of the fibre, cord or cable or 250 mm.

Key
D ≥ 25 d or 60 mm (min.)
Components:
A = 200 mm ± 50 mm
Closures:
A ≥ 50 d or 250 mm (min.)
Figure 1 – An example of DUT configuration of retention test
5.2 Holding fixture
The holding fixture holds the DUT and its mandrel in positions which are shown in Figure 1 for
the duration of the test. The holding method used shall not distort the DUT. Mount the DUT in
a fixed position. The holding fixture should allow the DUT to be connected to an optical
source and detector in order to monitor changes in attenuation if required by the relevant
specification.
5.3 Force generator
The force generator shall smoothly apply the specified force at the specified rate to the DUT.
5.4 Force gauge
The force gauge shall register the amount of force being exerted between the DUT and the
fibre, cord or cable. This equipment may include a device to record the rate of force
application or the total time the force is applied or both.
5.5 Alternative apparatus
Other apparatus may be used in lieu of a tensile test machine and a force indicator. For
example, the required force may be achieved by applying controlled increments of mass to
the mandrel.
– 8 – IEC 61300-2-4:2019 © IEC 2019
5.6 Timer
A device to measure the total time while the force is applied.
5.7 Measurement equipment
Optical, sealing and other examination and measuring equipment shall be available as
required by IEC 61300-2-38, IEC 61300-3-1, IEC 61300-3-3, IEC 61300-3-4, IEC 61300-3-6 or
IEC 61300-3-28 as appropriate. Refer to the required procedure for details.
6 Procedure
6.1 Preparation of DUTs
Prepare the DUTs in accordance with the manufacturer’s instructions or as specified in the
relevant specification. DUTs shall be terminated with a sufficient length of fibre cable to
facilitate interfacing with the optical source and detector.
6.2 Pre-conditioning
Pre-condition each DUT for 2 h for connectors, splices, passive components and fibre
management systems, or for 4 h for closures at the standard atmospheric condition defined in
IEC 61300-1.
6.3 Mounting DUT and visual inspection of the mounted DUT
Securely mount the DUT and its mandrel on the holding fixtures and place in the test
apparatus.
Visually examine each DUT in accordance with IEC 61300-3-1 to ensure that the DUT has not
been damaged by inserting it into the test equipment.
6.4 Initial examination
Visually examine each DUT in accordance with IEC 61300-3-1. Complete the initial
examinations and measurements on the DUT as required by the relevant specification.
For the sealing performance of category S closures, the closure shall be pressurized at the
test temperature. The pressure will be measured at the test temperature in accordance with
test method B of IEC 61300-2-38.
For the optical evaluation, the variation of the attenuation shall be measured in accordance
with IEC 61300-3-3 or IEC 61300-3-28. If required, the attenuation will be measured in
accordance with IEC 61300-3-4.
6.5 Conditioning and optical measurement during the conditioning
Activate the test apparatus so that an axial force is gradually exerted between the DUT and
the mandrel. Apply the load smoothly so as to eliminate any impulse or impact loading effect.
If automatic equipment is used, it is recommended that the load change of the DUT be 5 N/s
for reinforced cable and 0,5 N/s for secondary and primary coated fibre, unless otherwise
specified in the relevant specification. Continue loading until the tensile load specified in the
relevant specification has been reached.
Maintain the specified load for the specified time period required by the relevant performance
specification.
While the DUT is under load, make observations and perform optical measurements when
required by the relevant performance specification.
If required by the relevant specification, measure the change of attenuation in accordance
with IEC 61300-3-3 before, during and after the load is applied.
6.6 Removal of the test load
Remove the test load from the DUT.
For a category S closure, the pressure will be measured at the test temperature in accordance
with test method B of IEC 61300-2-38 before and after applying the load.
6.7 Recovery
Remove the DUT from the test apparatus and allow the DUT to recover under standard
atmospheric condition for 2 h for connectors, splices, passive components and fibre
management systems or for 4 h for closures, as defined in IEC 61300-1, unless otherwise
specified in the relevant specification.
6.8 Final examination and performance check
On completion of the test, perform the final measurements, as defined in the relevant
specification. The results of the final measurement shall be within the limit established in the
relevant specification.
For the sealing test of the DUTs, such as closures, the final sealing performance shall be
checked in accordance with test method A of IEC 61300-2-38.
For the optical evaluation of DUTs, the variation of the attenuation shall be measured in
accordance with IEC 61300-3-3 or IEC 61300-3-28. If required, the attenuation will be
measured in accordance with IEC 61300-3-4.
6.9 Final visual inspection
Visually examine the DUT in accordance with IEC 61300-3-1. Check for evidence of any
degradation in the DUT. This may include, for example:
• broken, loose or damaged parts or accessories, and
• excessive movement of, damage to, or broken cable sheath, seals, or cable clamps.
Repeat the procedure at another test temperature if required.
7 Severity
The severity consists of the test temperature, the magnitude of the tensile load and the time
for which it is applied. Recommended severities for connectors, FMCs (Field Mountable
Connector), passive components, splices and FMS (Fibre Management Systems) are given in
Table 1. Recommended severities for wall outlets, boxes, OFDM and closures of category C
are listed in Table 2. Recommended severities for hardened connectors, street cabinets,
boxes and closures of category S, G and A are shown in Table 3.

– 10 – IEC 61300-2-4:2019 © IEC 2019
Table 1 – Recommended test severities for connectors,
FMC, passive components, splices, and FMS
Categories Severity
HD
C, C Load: O,V O,V O,V
50 N for 60 s for cables with aramid yarn strength members
10 N for 60 s for tubes or cables without aramid yarn strength
members
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
Load:  O,V
10 N for 60 s for cables
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
a
Load:   O,V
10 N for 60 s for cables
5,0 N for 60 s for cable elements and tubes
OP, Load: O,V O,V O,V
HD
OP , 70 N for 60 s for cables with aramid yarn strength members
OP+, 10 N for 60 s for tubes or cables without aramid yarn strength
members
HD
OP+
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
Load:
O,V
10 N for 60 s for cables
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
a
Load:   O,V
10 N for 60 s for cables
5,0 N for 60 s for cable elements or tubes
HD b
I, I Load: 100 N for 120 s on cable O,V (O,V)
E Load: O,V
100 N for 60 s for cables with diameter, d > 2 mm
70 N for 60 s for cables with diameter, d ≤ 2 mm
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
b
Load:  (O,V)
10 N for 60 s for cables
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
NOTE 1 Categories are defined in IEC 61753-1.
NOTE 2 For ribbon fibres, the severities should be the same as for secondary coated fibres.
NOTE 3 For non-round duplex cords and flat cables, the smaller diameter is used to define the severities.
a
If cables or cable elements (loose tubes) are not fixed to the entry ports of the fibre management system, the
test shall not be performed.
b
These tests shall be applicable to passive optical components that incorporate fibre or fibre cable pigtails in
their product design.
Connectors
FMC
Passive
components
Splices
FMS
Table 2 – Recommended test severities for wall outlets, boxes, OFDM, and closures
Categories Severity
C Load: 25 N on cables or cords S,O,V S,O,V O,V
60 s load duration per cable/cord
Test conducted at +23 °C ± 3 °C
Load on cable (N): 10 x cable diameter (mm)  S,O,
1 h load duration per cable
Test conducted at +23 °C ± 3 °C
NOTE 1 Categories are defined in IEC 61753-1.
NOTE 2 For non-round duplex cords and flat cables, the smaller diameter is used to define the severities.
NOTE 3 Separate test samples for sealing performance and optical performance evaluation may be used.

Wall outlet
Boxes
OFDM
Closures
– 12 – IEC 61300-2-4:2019 © IEC 2019
Table 3 – Recommended test severities for hardened
connectors, street cabinets, boxes, and closures
Categories Severity
b
A Load (N): 20 × cable diameter (mm) S,O,V V  S,O,V
1 h load duration per cable per test temperature
a
Sealing test conducted at test temperatures −15 °C and +45 °C
a
Optical test conducted at +23 °C ± 3 °C
Load (N): 10 × cable diameter (mm) for 1 h per feeder cable per S, O, V

test temperature
25 N for 60 s per cord and work area cable and per temperature
a
Sealing test conducted at test temperatures −15°C and +45°C
a
Optical test conducted at +23°C ± 3°C
G Load (N): 20 × cable diameter (mm) S,O,V S,O, V

1 h load duration per cable per test temperature.
c
Sealing test conducted at −15 °C ± 2 °C and +.45 °C ± 2 °C
c
Optical test conducted at +23 °C ± 3 °C
S Load (N): 20 × cable diameter (mm) S,O,V S,O, V

Duration: 1 h per cable at test temperature
c
Sealing test conducted at −15 °C ± 2 °C and +45 °C ± 2 °C
c
Optical test conducted at +23 °C ± 3 °C
NOTE 1 Categories are defined in IEC 61753-1.
NOTE 2 For non-round duplex cords and flat cables, the smaller diameter is used to define the severities.
a
Separate test samples for hardened connector/closure sealing performance and optical evaluation may be
used.
b
Test only required when product is pre-cabled and cable handling is expected when unpacking and installing
the product.
c
Separate test samples for sealing performance and optical performance evaluation may be used.

8 Details to be specified
The following details, as applicable, shall be specified in the re
...

IEC 61300-2-4 ®
Edition 2.1 2020-01
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-4: Tests – Fibre or cable retention

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-4: Essais – Rétention de la fibre ou du câble

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and definitions clause of
IEC publications issued between 2002 and 2015. Some
IEC Customer Service Centre - webstore.iec.ch/csc entries have been collected from earlier publications of IEC
If you wish to give us your feedback on this publication or TC 37, 77, 86 and CISPR.

need further assistance, please contact the Customer Service

Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

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La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
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Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
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IEC 61300-2-4 ®
Edition 2.1 2020-01
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures –
Part 2-4: Tests – Fibre or cable retention

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures

fondamentales d'essais et de mesures –

Partie 2-4: Essais – Rétention de la fibre ou du câble

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-7797-3

IEC 61300-2-4 ®
Edition 2.1 2020-01
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-4: Tests – Fibre or cable retention

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-4: Essais – Rétention de la fibre ou du câble

– 2 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General description . 6
5 Apparatus . 6
5.1 Mandrel . 6
5.2 Holding fixture . 8
5.3 Force generator . 8
5.4 Force gauge . 8
5.5 Alternative apparatus . 8
5.6 Timer . 9
5.7 Measurement equipment . 9
6 Procedure . 9
6.1 Preparation of DUTs . 9
6.2 Pre-conditioning . 9
6.3 Mounting DUT and visual inspection of the mounted DUT . 9
6.4 Initial examination . 9
6.5 Conditioning and optical measurement during the conditioning . 9
6.6 Removal of the test load . 10
6.7 Recovery . 10
6.8 Final examination and performance check . 10
6.9 Final visual inspection . 10
7 Severity . 10
8 Details to be specified . 13
Bibliography . 15

Figure 1 – An example of DUT configuration of retention test . 8

Table 1 – Recommended test severities for connectors, FMC, passive components,
splices, and FMS . 11
Table 2 – Recommended test severities for wall outlets, boxes, OFDM, and closures . 12
Table 3 – Recommended test severities for hardened connectors, street cabinets,
boxes, and closures . 13

© IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –
Part 2-4: Tests – Fibre or cable retention
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
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61300-2-4 edition 2.1 contains the second edition (2019-01) [documents 86B/4147/
FDIS and 86B/4160/RVD] and its amendment 1 (2020-01) [documents 86B/4210/CDV and
86B/4237/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
– 4 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
International Standard IEC 61300-2-4 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
This second edition includes the following significant technical changes with respect to
the previous edition:
a) addition of Clause 2, Normative references;
b) clarification of the test procedures;
c) clarification of the severities;
d) modification of the whole document structure according to the latest ISO/IEC Directives.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61300-2 series, published under the general title Fibre optic
interconnecting devices and passive components – Basic test and measurement procedures –
Tests, can be found on the IEC website.
The committee has decided that the contents of the base publication and its amendment 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.
© IEC 2020
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-4: Tests – Fibre or cable retention

1 Scope
The purpose of this part of IEC 61300 is to ensure that the retention or attachment of the fibre,
cord or cable in a fibre optic device or an enclosure will withstand tensile loads likely to be
applied during normal service.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 61300-1, Fibre optic interconnecting devices and passives components − Basic test and
measurement procedures − Part 1: General and guidance
IEC 61300-2-38, Fibre optic interconnecting devices and passive components − Basic test
and measurement procedures − Part 2-38: Tests − Sealing for pressurized fibre optic closures
IEC 61300-3-1, Fibre optic interconnecting devices and passive components − Basic test and
measurement procedures − Part 3-1: Examinations and measurements − Visual examination
IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of
changes in attenuation and return loss
IEC 61300-3-4, Fibre optic interconnecting devices and passive components − Basic test and
measurement procedures − Part 3-4: Examinations and measurements − Attenuation
IEC 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-28: Examinations and measurements – Transient loss
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

– 6 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
4 General description
The device under test (DUT) is rigidly clamped to a holding fixture, which is shown in Figure 1,
and a tensile load is applied to the fibre, cord or cable. Potential failure modes for this test
include, but are not limited to:
a) cable sheath damage;
b) strength member damage;
c) fibre breakage or damage;
d) cable clamp failure;
e) cable pull-out;
f) loss of optical continuity or loss of sealing of enclosures;
g) change in optical characteristics, such as attenuation or return loss;
h) breaking, excessive movement or damage to the cable sheath, seals, cable clamps.
5 Apparatus
5.1 Mandrel
The diameter D of the mandrel is equal to the greater of 60 mm or 25 times the diameter d of
the fibre, cord or cable. Use an adequate number of turns to prevent slippage. For optical
components, the distance A between the rearmost portion of the cable fixing component of the
DUT and the mandrel tangent point shall be 200 mm ± 50 mm. For closures, the distance A
shall be the greater of 50 times the diameter d of the fibre, cord or cable or 250 mm.
The minimum diameter D of the mandrel in Figure 1 shall be the greater of 60 mm or the
specified minimum bending diameter of the fibre, cord or cable. Sufficient turns shall be used
to prevent slippage. For optical components, the distance A between the rearmost portion of
the cable fixing component of the DUT and the mandrel tangent point shall be between 200
mm and 300 mm. For closures, the minimum distance A shall be the greater of 400 mm or 50
times the diameter d of the cord or cable.

© IEC 2020
Key
D ≥ 25 d or 60 mm (min.)
Components:
A = 200 mm ± 50 mm
Closures:
A ≥ 50 d or 250 mm (min.)
– 8 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
Key
D ≥ 60 mm or specified minimum bending diameter of the fibre, cord or cable
Components: A ≥ 200 mm and ≤ 300 mm
Closures: A ≥ 400 mm or A ≥ 50 d
Figure 1 – An example of DUT configuration of retention test
5.2 Holding fixture
The holding fixture holds the DUT and its mandrel in positions which are shown in Figure 1 for
the duration of the test. The holding method used shall not distort the DUT. Mount the DUT in
a fixed position. The holding fixture should allow the DUT to be connected to an optical
source and detector in order to monitor changes in attenuation if required by the relevant
specification.
5.3 Force generator
The force generator shall smoothly apply the specified force at the specified rate to the DUT.
5.4 Force gauge
The force gauge shall register the amount of force being exerted between the DUT and the
fibre, cord or cable. This equipment may include a device to record the rate of force
application or the total time the force is applied or both.
5.5 Alternative apparatus
Other apparatus may be used in lieu of a tensile test machine and a force indicator. For
example, the required force may be achieved by applying controlled increments of mass to
the mandrel.
© IEC 2020
5.6 Timer
A device to measure the total time while the force is applied.
5.7 Measurement equipment
Optical, sealing and other examination and measuring equipment shall be available as
required by IEC 61300-2-38, IEC 61300-3-1, IEC 61300-3-3, IEC 61300-3-4, IEC 61300-3-6 or
IEC 61300-3-28 as appropriate. Refer to the required procedure for details.
6 Procedure
6.1 Preparation of DUTs
Prepare the DUTs in accordance with the manufacturer’s instructions or as specified in the
relevant specification. DUTs shall be terminated with a sufficient length of fibre cable to
facilitate interfacing with the optical source and detector.
6.2 Pre-conditioning
Pre-condition each DUT for 2 h for connectors, splices, passive components and fibre
management systems, or for 4 h for closures at the standard atmospheric condition defined in
IEC 61300-1.
6.3 Mounting DUT and visual inspection of the mounted DUT
Securely mount the DUT and its mandrel on the holding fixtures and place in the test
apparatus.
Visually examine each DUT in accordance with IEC 61300-3-1 to ensure that the DUT has not
been damaged by inserting it into the test equipment.
6.4 Initial examination
Visually examine each DUT in accordance with IEC 61300-3-1. Complete the initial
examinations and measurements on the DUT as required by the relevant specification.
For the sealing performance of category S closures, the closure shall be pressurized at the
test temperature. The pressure will be measured at the test temperature in accordance with
test method B of IEC 61300-2-38.
For the optical evaluation, the variation of the attenuation shall be measured in accordance
with IEC 61300-3-3 or IEC 61300-3-28. If required, the attenuation will be measured in
accordance with IEC 61300-3-4.
6.5 Conditioning and optical measurement during the conditioning
Activate the test apparatus so that an axial force is gradually exerted between the DUT and
the mandrel. Apply the load smoothly so as to eliminate any impulse or impact loading effect.
If automatic equipment is used, it is recommended that the load change of the DUT be 5 N/s
for reinforced cable and 0,5 N/s for secondary and primary coated fibre, unless otherwise
specified in the relevant specification. Continue loading until the tensile load specified in the
relevant specification has been reached.
Maintain the specified load for the specified time period required by the relevant performance
specification.
– 10 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
While the DUT is under load, make observations and perform optical measurements when
required by the relevant performance specification.
If required by the relevant specification, measure the change of attenuation in accordance
with IEC 61300-3-3 or IEC 61300-3-28 before, during and after the load is applied.
6.6 Removal of the test load
Remove the test load from the DUT.
For a category S closure, the pressure will be measured at the test temperature in accordance
with test method B of IEC 61300-2-38 before and after applying the load.
6.7 Recovery
Remove the DUT from the test apparatus and allow the DUT to recover under standard
atmospheric condition for 2 h for connectors, splices, passive components and fibre
management systems or for 4 h for closures, as defined in IEC 61300-1, unless otherwise
specified in the relevant specification.
6.8 Final examination and performance check
On completion of the test, perform the final measurements, as defined in the relevant
specification. The results of the final measurement shall be within the limit established in the
relevant specification.
For the sealing test of the DUTs, such as closures, the final sealing performance shall be
checked in accordance with test method A of IEC 61300-2-38.
For the optical evaluation of DUTs, the variation of the attenuation shall be measured in
accordance with IEC 61300-3-3 or IEC 61300-3-28. If required, the attenuation will be
measured in accordance with IEC 61300-3-4.
6.9 Final visual inspection
Visually examine the DUT in accordance with IEC 61300-3-1. Check for evidence of any
degradation in the DUT. This may include, for example:
• broken, loose or damaged parts or accessories, and
• excessive movement of, damage to, or broken cable sheath, seals, or cable clamps.
Repeat the procedure at another test temperature if required.
7 Severity
The severity consists of the test temperature, the magnitude of the tensile load and the time
for which it is applied. Recommended severities for connectors, FMCs (Field Mountable
Connector), passive components, splices and FMS (Fibre Management Systems) are given in
Table 1. Recommended severities for wall outlets, boxes, OFDM and closures of category C
are listed in Table 2. Recommended severities for hardened connectors, street cabinets,
boxes and closures of category S, G and A are shown in Table 3.
In the columns of Tables 1, 2 and 3, the required acceptance criteria S, O and/or V are listed
for each product:
S: Sealing acceptance criteria;
O: Optical acceptance criteria;

© IEC 2020
V: Visual inspection acceptance criteria.
The test severities marked with a blank cell are not relevant for the selected product.
Table 1 – Recommended test severities for connectors,
FMC, passive components, splices, and FMS
Categories Severity
HD
C, C Load: O,V O,V O,V
50 N for 60 s for cables with aramid yarn strength members
10 N for 60 s for tubes or cables without aramid yarn strength
members
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
Load:  O,V
10 N for 60 s for cables
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
a
Load:   O,V
10 N for 60 s for cables
5,0 N for 60 s for cable elements and tubes
OP, Load: O,V O,V O,V
HD
OP , 70 N for 60 s for cables with aramid yarn strength members
OP+, 10 N for 60 s for tubes or cables without aramid yarn strength
members
HD
OP+
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
Load:
O,V
10 N for 60 s for cables
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
a
Load:   O,V
10 N for 60 s for cables
5,0 N for 60 s for cable elements or tubes
HD b
I, I Load: 100 N for 120 s on cable O,V (O,V)
E Load: O,V
100 N for 60 s for cables with diameter, d > 2 mm
70 N for 60 s for cables with diameter, d ≤ 2 mm
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
b
Load:  (O,V)
10 N for 60 s for cables
5,0 N for 60 s for buffered fibres
2,0 N for 60 s for primary coated fibres
NOTE 1 Categories are defined in IEC 61753-1.
NOTE 2 For ribbon fibres, the severities should be the same as for secondary coated fibres.
NOTE 3 For non-round duplex cords and flat cables, the smaller diameter is used to define the severities.
a
If cables or cable elements (loose tubes) are not fixed to the entry ports of the fibre management system, the
test shall not be performed.
b
These tests shall be applicable to passive optical components that incorporate fibre or fibre cable pigtails in
their product design.
Connectors
FMC
Passive
components
Splices
FMS
– 12 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
Table 2 – Recommended test severities for wall outlets, boxes, OFDM, and closures
Categories Severity
C Load: 25 N on cables or cords S,O,V S,O,V O,V
60 s load duration per cable/cord
Test conducted at +23 °C ± 3 °C
Load on cable (N): 10 x cable diameter (mm)  S,O,
1 h load duration per cable
Test conducted at +23 °C ± 3 °C
NOTE 1 Categories are defined in IEC 61753-1.
NOTE 2 For non-round duplex cords and flat cables, the smaller diameter is used to define the severities.
NOTE 3 Separate test samples for sealing performance and optical performance evaluation may be used.

Wall outlet
Boxes
OFDM
Closures
© IEC 2020
Table 3 – Recommended test severities for hardened
connectors, street cabinets, boxes, and closures
Categories Severity
b
A Load (N): 20 × cable diameter (mm) S,O,V V  S,O,V
1 h load duration per cable per test temperature
a
Sealing test conducted at test temperatures −15 °C and +45 °C
a
Optical test conducted at +23 °C ± 3 °C
Load (N): 10 × cable diameter (mm) for 1 h per feeder cable per S, O, V

test temperature
25 N for 60 s per cord and work area cable and per temperature
a
Sealing test conducted at test temperatures −15°C and +45°C
a
Optical test conducted at +23°C ± 3°C
G Load (N): 20 × cable diameter (mm) S,O,V S,O, V

1 h load duration per cable per test temperature.
c
Sealing test conducted at −15 °C ± 2 °C and +.45 °C ± 2 °C
c
Optical test conducted at +23 °C ± 3 °C
S Load (N): 20 × cable diameter (mm) S,O,V S,O, V

Duration: 1 h per cable at test temperature
c
Sealing test conducted at −15 °C ± 2 °C and +45 °C ± 2 °C
c
Optical test conducted at +23 °C ± 3 °C
NOTE 1 Categories are defined in IEC 61753-1.
NOTE 2 For non-round duplex cords and flat cables, the smaller diameter is used to define the severities.
a
Separate test samples for hardened connector/closure sealing performance and optical evaluation may be
used.
b
Test only required when product is pre-cabled and cable handling is expected when unpacking and installing
the product.
c
Separate test samples for sealing performance and optical performance evaluation may be used.

8 Details to be specified
The following details, as applicable, shall be specified in the relevant specification:
• quantity and description of samples required for test;
• magnitude, direction, and rate of application of the tensile load;
• position of clamping of the fibre, cord or cable;
• duration of the load;
• pre-conditioning procedure;
• recovery procedure;
• method of holding;
• DUT functioning or non-functioning;
• initial inspection and measurements;
• examinations and measurements during test and performance requirements;
Hardened
connectors
Street cabinets
Boxes
Closures
– 14 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
• final inspection and measurements;
• optical measurement method, if necessary;
• sealing test method, if necessary;
• deviations from test procedure;
• additional pass/fail criteria.

© IEC 2020
Bibliography
IEC 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard − Part 1: General and guidance

___________
– 16 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
SOMMAIRE
AVANT-PROPOS . 17
1 Domaine d'application . 19
2 Références normatives . 19
3 Termes et définitions . 19
4 Description générale . 20
5 Appareillage . 20
5.1 Mandrin . 20
5.2 Dispositif de rétention . 22
5.3 Générateur de force . 22
5.4 Dynamomètre . 22
5.5 Appareillage en variante . 22
5.6 Temporisateur . 23
5.7 Matériel de mesure . 23
6 Procédure . 23
6.1 Préparation des DUT . 23
6.2 Préconditionnement . 23
6.3 Fixation du DUT et examen visuel du DUT fixé . 23
6.4 Examen initial . 23
6.5 Conditionnement et mesure optique pendant le conditionnement . 23
6.6 Retrait de la charge d'essai . 24
6.7 Rétablissement . 24
6.8 Examen final et contrôle de performance . 24
6.9 Examen visuel final . 24
7 Sévérité . 24
8 Détails à spécifier . 27
Bibliographie . 29

Figure 1 – Exemple de configuration de DUT pour l'essai de rétention . 22

Tableau 1 – Sévérités d'essai recommandées pour les connecteurs, les FMC, les
organes passifs, les épissures et les FMS . 25
Tableau 2 – Sévérités d'essai recommandées pour les prises murales, les coffrets, les
dispositifs OFDM et les boîtiers . 26
Tableau 3 – Sévérités d'essai recommandées pour les connecteurs renforcés, les
armoires d'environnement urbain, les coffrets et les boîtiers . 27

© IEC 2020
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
DISPOSITIFS D'INTERCONNEXION
ET COMPOSANTS PASSIFS FIBRONIQUES –
PROCÉDURES FONDAMENTALES D'ESSAIS ET DE MESURES –
Partie 2-4: Essais – Rétention de la fibre ou du câble
AVANT-PROPOS
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composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l'IEC). L'IEC a pour
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l'objet de droits de brevet. L'IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
Cette version consolidée de la Norme IEC officielle et de son amendement a été
préparée pour la commodité de l'utilisateur.
L'IEC 61300-2-4 édition 2.1 contient la deuxième édition (2019-01) [documents 86B/4147/
FDIS et 86B/4160/RVD] et son amendement 1 (2020-01) [documents 86B/4210/CDV
et86B/4237/RVC].
Dans cette version Redline, une ligne verticale dans la marge indique où le contenu
technique est modifié par l'amendement 1. Les ajouts sont en vert, les suppressions
sont en rouge, barrées. Une version Finale avec toutes les modifications acceptées est
disponible dans cette publication.

– 18 – IEC 61300-2-4:2019+AMD1:2020 CSV
© IEC 2020
La Norme internationale IEC 61300-2-4 a été établie par le sous-comité 86B:
Dispositifs d'interconnexion et composants passifs à fibres optiques, du comité d'études
86 de l'IEC: Fibres optiques.
Cette deuxième édition inclut les modifications techniques majeures suivantes par rapport à
l'édition précédente:
a) ajout de l'Article 2, Références normatives;
b) clarification des procédures d'essai;
c) clarification des sévérités;
d) modification de la structure globale du document, conformément aux dernières directives
ISO/IEC.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2.
Une liste de toutes les parties de la série IEC 61300-2, publiées sous le titre général
Dispositifs d'interconnexion et composants passifs à fibres optiques – Méthodes
fondamentales d'essais et de mesures – Essais, peut être consultée sur le site web de l'IEC.
Le comité a décidé que le contenu de la publication de base et de son amendement ne sera
pas modifié avant la date de stabilité indiquée sur le site web de l’IEC sous
"http://webstore.iec.ch" dans les données relatives à la publication recherchée. A cette date,

la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.
IMPORTANT – Le logo "colour inside" qui se trouve sur la page de couverture de cette
publication indique qu'elle contient des couleurs qui sont considérées comme utiles à
une bonne compréhension de son contenu. Les utilisateurs devraient, par conséquent,
imprimer cette publication en utilisant une imprimante couleur.

© IEC 2020
DISPOSITIFS D'INTERCONNEXION
ET COMPOSANTS PASSIFS FIBRONIQUES –
PROCÉDURES FONDAMENTALES D'ESSAIS ET DE MESURES –

Partie 2-4: Essais – Rétention de la fibre ou du câble

1 Domaine d'application
L'objet de la présente partie de l'IEC 61300 est de vérifier que la rétention ou la fixation de la
fibre, du cordon ou du câble à un dispositif fibronique ou à une enveloppe puisse résister aux
charges de traction susceptibles d’être appliquées lors d’une utilisation normale.
2 Références normatives
Les documents suivants cités dans le texte constituent, pour tout ou partie de leur contenu,
des exigences du présent document. Pour les références datées, seule l'édition citée
s'applique. Pour les références non datées, la dernière édition du document de référence
s'applique (y compris les éventuels amendements).
IEC 61300-1, Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures – Partie 1: Généralités et lignes directrices
IEC 61300-2-38, Dispositifs d'intercon
...