IEC 61300-2-11:2023

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-11: Tests - Axial compression

IEC 61300-2-11:2023 is to ensure that the captivation or the attachment of the cable to the fibre optic devices or components, for example fibre optic closures, will withstand compressive axial loads likely to be applied during normal service. This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) added Terms and definitions clause;
b) removed severity table for closures;
c) added recommended severity for tubes and cables without strength member attachment.

Dispositifs d'interconnexion et composants passifs fibroniques - Procédures fondamentales d'essais et de mesures - Partie 2-11: Essais - Compression axiale

L'IEC 61300-2-11:2023 vise à vérifier que la rétention ou la fixation du câble à des dispositifs ou des composants fibroniques, par exemple boîtiers fibroniques, résistera aux forces de compression axiale susceptibles d'être appliquées dans des conditions normales de fonctionnement. Cette troisième édition annule et remplace la deuxième édition parue en 2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout d’un article "Termes et définitions";
b) suppression du tableau des sévérités pour les boîtiers;
c) ajout d'une recommandation de sévérité pour les tubes et les câbles sans fixation d'éléments de renfort.

General Information

• Status: Published
• Publication Date: 23-Nov-2023
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Drafting Committee: WG 4 - TC 86/SC 86B/WG 4
• Current Stage: PPUB - Publication issued
• Start Date: 24-Nov-2023
• Completion Date: 22-Dec-2023

Relations

• Revises: IEC 61300-2-11:2012 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-11: Tests - Axial compression
• Effective Date: 05-Sep-2023

Overview

IEC 61300-2-11:2023 specifies basic test and measurement procedures for axial compression of fibre optic interconnecting devices and passive components. The standard ensures that cable captivation or attachment to devices (for example, fibre optic closures and splice enclosures) will withstand compressive axial loads encountered in normal service. The 2023 third edition is a technical revision that adds a terms clause, updates severity guidance, and includes recommended severities for tubes and cables without strength‑member attachment.

Key topics and requirements

• Purpose: Verify mechanical integrity of cable attachment under axial compressive loads.
• Apparatus: Requires a fixed clamping device for the device under test (DUT), a movable clamping device for the cable (clamp length ≥ 3× cable diameter), a force generator, and a force gauge.
• Mounting geometry: Distance L between rear of strain relief and movable cable clamp ≤ 2× cable diameter to prevent buckling.
• Preconditioning and recovery: Precondition specimens for at least 2 h at standard atmospheric conditions; allow at least 4 h recovery after load removal.
• Load application: Apply axial compressive load smoothly, maintain for a minimum of 2 minutes (unless otherwise specified).
• Examination: Initial and post‑test visual inspections per IEC 61300-3-1, checking for cracks, deformation, loose or displaced parts, jacket/seal damage, fibre breakage, and optical degradation.
• Severity (recommended): The standard gives recommended axial loads (Table 1). Typical guidance:
  • < 3 mm diameter - 10 N
  • 3 to < 6 mm - 20 N
  • 6 to < 10 mm - 50 N
  • 10 to < 20 mm - 100 N
  • ≥ 20 mm - 200 N
  • Tubes & cables without strength member attachment - 10 N
• Closures: The document references recommended severities for closures (e.g., central strength member loads), and notes editorial changes in this edition regarding closure tables.

Applications and who uses this standard

IEC 61300-2-11:2023 is used by:

• Manufacturers of fibre optic closures, connectors, and passive components to validate cable attachment and strain‑relief designs.
• Test laboratories and quality departments for compliance and type‑approval testing.
• Design and reliability engineers specifying mechanical performance and fail‑safe attachment criteria.
• Spec writers and procurement teams who reference performance severities in tender documents. Practical applications include product qualification, warranty testing, field‑ready product verification, and failure analysis after axial compression incidents.

Related standards

• IEC 61300-1 - General guidance for basic test procedures
• IEC 61300-3-1 - Visual examination procedures
• IEC 61753 - Performance categories for fibre optic interconnecting devices
• IEC 62005 - Reliability specifications

Keywords: IEC 61300-2-11:2023, axial compression test, fibre optic, cable attachment, strain relief, test procedure, severity levels, IEC 61300 series.

Standards Content (Sample)

IEC 61300-2-11 ®
Edition 3.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-11: Tests – Axial compression

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 61300-2-11 ®
Edition 3.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-11: Tests – Axial compression
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-7937-3

– 2 – IEC 61300-2-11:2023 RLV © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 5
4 General description . 5
5 Apparatus . 5
5.1 General . 5
5.2 Moveable clamping device . 6
5.3 Fixed clamping device . 6
5.4 Force generator . 6
5.5 Force gauge . 6
6 Procedure . 6
6.1 Preparation of specimens DUT . 6
6.2 Preconditioning . 6
6.3 Mounting of the DUT . 6
6.4 Initial examination . 7
6.5 Application of load . 7
6.6 Recovery . 7
6.7 Post-test Final examination . 7
7 Severity . 7
8 Details to be specified and reported. 8
Bibliography . 10

Figure 1 – Example of test apparatus set-up . 7

Table 1 – Recommended severity levels . 8
Table 2 – Recommended severity levels for closures .

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

Part 2-11: Tests – Axial compression

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 61300-2-11:2012. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
– 4 – IEC 61300-2-11:2023 RLV © IEC 2023
IEC 61300-2-11 has been prepared by subcommittee 86B: Fibre optic interconnecting devices
and passive components, of IEC technical committee 86: Fibre optics. It is an International
Standard.
This third edition cancels and replaces the second edition published in 2012. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) added Terms and definitions clause;
b) removed severity table for closures;
c) added recommended severity for tubes and cables without strength member attachment.
The text of this International Standard is based on the following documents:
Draft Report on voting
86B/4807/FDIS 86B/4824/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 61300 series, published under the general title Fibre optic
interconnecting devices and passive components – Basic test and measurement procedures,
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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document 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.

FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-11: Tests – Axial compression

1 Scope
The purpose of this part of IEC 61300 is to ensure that the captivation or the attachment of the
cable to the fibre optic devices or components, for example fibre optic closures, will withstand
compressive axial 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 passive components – Basic test and
measurement procedures – Part 1: General and guidance
IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-1: Examinations and measurements – Visual examination
3 Terms, definitions, and abbreviated terms
3.1 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.2 Abbreviated terms
DUT device under test
4 General description
The specimen DUT is rigidly clamped and an axial compressive load is applied to the cable.
5 Apparatus
5.1 General
The test apparatus shall be capable of applying an axial compression load between a clamped
specimen device or component and a fixed cable. The apparatus consists of the elements
described in 5.2 to 5.5.
– 6 – IEC 61300-2-11:2023 RLV © IEC 2023
5.2 Moveable clamping device
A suitable clamping device which grips a length of fibre optic cable over a distance equivalent
to at least three times the cable diameter (see Figure 1, dimension A), and which is capable of
providing an axial load without slipping, causing damage to the cable or increasing attenuation.
5.3 Fixed clamping device
A fixed clamping device capable of gripping the specimen device or component without altering
any of its mechanical properties.
5.4 Force generator
A force generator may be any device or apparatus capable of smoothly applying the specified
force at the specified rate.
5.5 Force gauge
A suitable An instrument for measuring the applied force being exerted between the specimen
device or component and the fibre optic cable.
6 Procedure
6.1 Preparation of specimens DUT
The specimen DUT shall consist of a fully assembled optical device or component, prepared in
accordance with the relevant specification where one or more cables are fixed and prepared in
accordance with the manufacturer’s instructions. Unless otherwise specified, The specimen
DUT shall be subjected to the following test procedure in non-operational mode.
6.2 Preconditioning
Unless otherwise specified, Precondition each prepared specimen DUT for at least 2 h at the
standard test atmospheric conditions specified in IEC 61300-1.
6.3 Mounting of the DUT
Securely fix the device under test or component to the fixed clamping device. See Figure 1 for
an example of the test set-up. Clamp the cable at the point of application using a movable
clamping device such that the distance, L, between the rear of the strain relief and the front of
the cable moveable clamping device is twice the cable diameter. The length, L, shall be at
maximum twice the cable diameter to prevent cable buckling.

Key
1 fixed clamping device
2 device under test or component
3 strain relief
4 fibre optic cable
5 movable clamping device
A cable clamp length (at least three times the cable diameter)
L length between rear of strain relief and cable clamp (maximum two times the cable diameter)
Figure 1 – Example of test apparatus set-up
6.4 Initial examination
The DUT shall be visually inspected according to IEC 61300-3-1.
6.5 Application of load
Smoothly apply the axial compressive load to the cable, as recommended in Table 1. Unless
otherwise specified, Maintain the load for a minimum of 2 min. The position of the point of
application shall be such that the load is axially transmitted.
6.6 Recovery
Allow DUT to recover for at least 4 h at standard atmospheric conditions specified in
IEC 61300-1.
6.7 Post-test Final examination
Remove the axial compressive load from the specimen DUT and the specimen DUT from the
test mounting. Unless otherwise specified, Visually examine the specimen DUT and its
component parts in accordance with IEC 61300-3-1. Check for evidence of cracking, loose parts,
chipped parts, scratches, permanent deformation, displacement, excessive movements or other
damage to cable jacket, seals, strain relief or fibres which might impair its function, and against
any other pass/fail criteria specified in the relevant IEC 61753 performance standard or
IEC 62005 reliability specification. Careful attention shall be given to degradation of the optical
signal, fibre breakage and excessive movement of the cable relative to the specimen DUT.
7 Severity
The severity consists of the magnitude of the axial compressive force. The severity shall be
specified in the relevant specification. Recommended values of the test parameters are given
in Table 1 and Table 2.
Table 1 shows the specified test severities in relation to the performance categories. It is
recommended to verify the test severities with the relevant IEC 61753 performance standards
and IEC 62005 reliability specifications for the normative values.

– 8 – IEC 61300-2-11:2023 RLV © IEC 2023
Table 1 – Recommended severity levels
Cable diameter Load
mm N
< 3 10
3 to 6
6 to 10
10 to 20
> 20
Category Cable diameter Load
mm N
< 3 10
≥ 3 to < 6 20
≥ 6 to < 10 50
C, A, G, S
≥ 10 to < 20 100
≥ 20 200
For tubes and cables without strength member attachment 10

Table 2 – Recommended severity levels for closures
Target Load Duration
N min
Central strength member 450 30

8 Details to be specified and reported
The following details, as applicable, shall be specified in the relevant specification and shall be
reported in the test report:
• magnitude of the load;
• duration of the axial compression load if other than 2 min;
• cable type, diameter;
– Length L
– Rate of load application
– Specimen mated or unmated
– Specimen optically functioning or non-functioning
• type of load application;
• description of DUT;
• pre-conditioning procedure;
– Post-conditioning procedure
• initial examinations and measurements and performance requirements;
• examinations and measurements during test and performance requirements, if required;
• final examinations and measurements and performance requirements;
• optical measurement method, if necessary;
• deviations from test procedure;

• additional pass/fail criteria.

– 10 – IEC 61300-2-11:2023 RLV © IEC 2023
Bibliography
IEC 61753 (all parts), Fibre optic interconnecting devices and passive components –
Performance standard
IEC 62005 (all parts), Reliability of fibre optic interconnecting devices and passive components

___________
IEC 61300-2-11 ®
Edition 3.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-11: Tests – Axial compression

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-11: Essais – Compression axiale
– 2 – IEC 61300-2-11:2023 © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 5
4 General description . 5
5 Apparatus . 5
5.1 General . 5
5.2 Moveable clamping device . 6
5.3 Fixed clamping device . 6
5.4 Force generator . 6
5.5 Force gauge . 6
6 Procedure . 6
6.1 Preparation of DUT . 6
6.2 Preconditioning . 6
6.3 Mounting of the DUT . 6
6.4 Initial examination . 7
6.5 Application of load . 7
6.6 Recovery . 7
6.7 Final examination . 7
7 Severity . 7
8 Details to be specified and reported. 8
Bibliography . 9

Figure 1 – Example of test set-up . 7

Table 1 – Recommended severity levels . 8

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

Part 2-11: Tests – Axial compression

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,
...

IEC 61300-2-11 ®
Edition 3.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-11: Tests – Axial compression

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-11: Essais – Compression axiale
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About the IEC
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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.

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IEC 61300-2-11 ®
Edition 3.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures –
Part 2-11: Tests – Axial compression

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures

fondamentales d'essais et de mesures –

Partie 2-11: Essais – Compression axiale

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20  ISBN 978-2-8322-7874-1

– 2 – IEC 61300-2-11:2023 © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 5
4 General description . 5
5 Apparatus . 5
5.1 General . 5
5.2 Moveable clamping device . 6
5.3 Fixed clamping device . 6
5.4 Force generator . 6
5.5 Force gauge . 6
6 Procedure . 6
6.1 Preparation of DUT . 6
6.2 Preconditioning . 6
6.3 Mounting of the DUT . 6
6.4 Initial examination . 7
6.5 Application of load . 7
6.6 Recovery . 7
6.7 Final examination . 7
7 Severity . 7
8 Details to be specified and reported. 8
Bibliography . 9

Figure 1 – Example of test set-up . 7

Table 1 – Recommended severity levels . 8

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

Part 2-11: Tests – Axial compression

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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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
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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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
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the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 61300-2-11 has been prepared by subcommittee 86B: Fibre optic interconnecting devices
and passive components, of IEC technical committee 86: Fibre optics. It is an International
Standard.
This third edition cancels and replaces the second edition published in 2012. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) added Terms and definitions clause;
b) removed severity table for closures;

– 4 – IEC 61300-2-11:2023 © IEC 2023
c) added recommended severity for tubes and cables without strength member attachment.
The text of this International Standard is based on the following documents:
Draft Report on voting
86B/4807/FDIS 86B/4824/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 61300 series, published under the general title Fibre optic
interconnecting devices and passive components – Basic test and measurement procedures,
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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-11: Tests – Axial compression

1 Scope
The purpose of this part of IEC 61300 is to ensure that the captivation or the attachment of the
cable to the fibre optic devices or components, for example fibre optic closures, will withstand
compressive axial 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 passive components – Basic test and
measurement procedures – Part 1: General and guidance
IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-1: Examinations and measurements – Visual examination
3 Terms, definitions, and abbreviated terms
3.1 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.2 Abbreviated terms
DUT device under test
4 General description
The DUT is rigidly clamped and an axial compressive load is applied to the cable.
5 Apparatus
5.1 General
The test apparatus shall be capable of applying an axial compression load between a clamped
device or component and a fixed cable. The apparatus consists of the elements described in
5.2 to 5.5.
– 6 – IEC 61300-2-11:2023 © IEC 2023
5.2 Moveable clamping device
A clamping device which grips a length of fibre optic cable over a distance equivalent to at least
three times the cable diameter (see Figure 1, dimension A), and which is capable of providing
an axial load without slipping, causing damage to the cable or increasing attenuation.
5.3 Fixed clamping device
A fixed clamping device capable of gripping the device or component without altering any of its
mechanical properties.
5.4 Force generator
A force generator may be any device or apparatus capable of smoothly applying the specified
force at the specified rate.
5.5 Force gauge
An instrument for measuring the applied force being exerted between the device or component
and the fibre optic cable.
6 Procedure
6.1 Preparation of DUT
The DUT shall consist of a fully assembled optical device or component where one or more
cables are fixed and prepared in accordance with the manufacturer’s instructions. The DUT
shall be subjected to the following test procedure in non-operational mode.
6.2 Preconditioning
Precondition each prepared DUT for at least 2 h at the standard atmospheric conditions
specified in IEC 61300-1.
6.3 Mounting of the DUT
Securely fix the device or component to the fixed clamping device. See Figure 1 for an example
of the test set-up. Clamp the cable at the point of application using a movable clamping device
such that the distance, L, between the rear of the strain relief and the front of the moveable
clamping device is at maximum twice the cable diameter to prevent cable buckling.

Key
1 fixed clamping device
2 device or component
3 strain relief
4 fibre optic cable
5 movable clamping device
A cable clamp length (at least three times the cable diameter)
L length between rear of strain relief and cable clamp (maximum two times the cable diameter)
Figure 1 – Example of test set-up
6.4 Initial examination
The DUT shall be visually inspected according to IEC 61300-3-1.
6.5 Application of load
Smoothly apply the axial compressive load to the cable, as recommended in Table 1. Maintain
the load for a minimum of 2 min. The position of the point of application shall be such that the
load is axially transmitted.
6.6 Recovery
Allow DUT to recover for at least 4 h at standard atmospheric conditions specified in
IEC 61300-1.
6.7 Final examination
Remove the axial compressive load from the DUT and the DUT from the test mounting. Visually
exa
...