IEC 61300-2-10:2021

IEC 61300-2-10 ®
Edition 3.0 2021-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-10: Tests – Crush and load resistance

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IEC 61300-2-10 ®
Edition 3.0 2021-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures –
Part 2-10: Tests – Crush and load resistance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-9532-8

– 2 – IEC 61300-2-10:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General description . 6
5 Apparatus . 6
5.1 General . 6
5.2 Plate or ground . 6
5.3 Pad . 6
5.4 Force generator . 6
5.5 Gauge . 6
5.6 Temperature chamber . 6
6 Procedure . 11
6.1 DUT preparation . 11
6.2 Pre-conditioning . 11
6.3 Initial examination and measurements . 11
6.4 Device mounting . 11
6.5 Conditioning . 11
6.6 Recovery . 11
6.7 Final examinations and measurements . 11
7 Severity . 12
8 Details to be specified . 12

Figure 1 – Crush Apparatus . 7
Figure 2 – Apparatus for an evenly distributed load applied to the top surface of a
street cabinet – Front view . 8
Figure 3 – Apparatus for an evenly distributed load applied to the top surface of a
street cabinet – Top view . 9
Figure 4 – Apparatus for load applied to a street cabinet door – Front view . 10
Figure 5 – Apparatus for load applied to a street cabinet door – Top view . 10

Table 1 – Severities . 12

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

Part 2-10: Tests – Crush and load resistance

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 redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 61300-2-10:2012. 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 61300-2-10:2021 RLV © IEC 2021
IEC 61300-2-10 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 includes the following significant technical changes with respect to the previous
edition:
a) addition of testing an evenly distributed static load applied on the top surface of a street
cabinet;
b) addition of testing a static load applied to a street cabinet door;
c) addition of descriptions to perform the test at a specified temperature other as specified in
the standard atmospheric conditions and addition of test temperature(s) in Table 1;
d) update of the severities according to IEC 61753-1:2018.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86B/4405/FDIS 86B/4435/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/standardsdev/publications.
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.
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.

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

Part 2-10: Tests – Crush and load resistance

1 Scope
This part of IEC 61300 evaluates the effect of loads which might is possible to occur when
fibre optic devices are exposed to critical situations such as being stepped on or, being run
over by vehicle tyres, when an evenly-distributed static load is applied to the top surface of a
street cabinet or when a load is applied to a street cabinet's open door.
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 61300-2-38, 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 61300-3-4, 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 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance
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 61300-2-10:2021 RLV © IEC 2021
4 General description
The device under test (DUT) is exposed to a static compressive load which is applied by a
pad.
5 Apparatus
5.1 General
The apparatus consists of the following elements (Figure 1).
Depending on the DUT type, the apparatus consists of:
– for connectors, passive components, hardened connectors and closures (see Figure 1);
– for an evenly distributed static load applied to the top surface of a street cabinet
(see Figure 2 and Figure 3);
– for a static load applied to a street cabinet door (see Figure 4 and Figure 5). The force
shall be applied on top of an open door at the point which creates the highest moment on
the hinge of the door.
5.2 Plate or ground
A 10 mm thick steel plate large enough for the whole DUT or as specified in the relevant
specification. The plate is place on a non yielding surface. The plate has rounded edges.
For the crush apparatus shown in Figure 1, a minimum 10 mm thick plate using steel or
material with comparable hardness, large enough for the whole DUT, or as specified in the
relevant specification, is required. The plate is placed on a non-yielding surface. The plate
has rounded edges.
For the apparatus for an evenly distributed static load applied to the top surface of a street
cabinet shown in Figure 2 and Figure 3 and for a static load applied to a street cabinet door
shown in Figure 4 and Figure 5, the street cabinet shall be fixed securely to firm ground.
5.3 Pad
A 10 mm thick steel pad, size as Table 1, or as specified in the relevant specification, bonded
to a non-yielding plate. The pad has rounded edges.
A pad with a minimum thickness of 10 mm, made of steel or a material with comparable
hardness, and with rounded edges fixed to a non-yielding plate is required. The pad shall
have a diameter of 5,6 cm (equals to a surface of 25 cm ) and contacts the DUT with its flat
circular surface, except for the load test with an evenly distributed static load applied to the
top surface of a street cabinet.
5.4 Force generator
The force generator may be any device or apparatus capable of smoothly applying the
specified load at the specified rate.
5.5 Gauge
The gauge shall be a suitable instrument for measuring the load applied to the DUT.
5.6 Temperature chamber
If the test has to be performed at another temperature than ambient, then a temperature
chamber of appropriate size and a temperature sensing device shall be used. The

temperature chamber shall be able to accommodate the DUT, the pad and the force generator,
and maintain the specified temperature within ± 2 °C.

3 2
IEC  1602/12
Key
1 force generator and gauge
2 pad
3 device under test
4 plate
F direction of force
Figure 1 – Crush Apparatus
– 8 – IEC 61300-2-10:2021 RLV © IEC 2021

Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 ground
F direction of force
Figure 2 – Apparatus for an evenly distributed load applied
to the top surface of a street cabinet – Front view

Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 ground
F axis of force
D depth (example of a street cabinet)
W width (example of a street cabinet)
Figure 3 – Apparatus for an evenly distributed load applied
to the top surface of a street cabinet – Top view

– 10 – IEC 61300-2-10:2021 RLV © IEC 2021

Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 open door of device under test (4a – 90° open, or 4b – maximum opening in normal use or at 180° if no locking
position)
5 ground
F direction of force
Figure 4 – Apparatus for load applied to a street cabinet door – Front view

Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 open door of device under test (4a – 90° open, or 4b – maximum opening in normal use or at 180° if no locking
position)
5 ground
F direction of force
Figure 5 – Apparatus for load applied to a street cabinet door – Top view

6 Procedure
6.1 DUT preparation
Prepare the DUT in accordance with the relevant specification. Unless otherwise specified,
the DUT shall be subjected to the crush resistance test in a non-operational mode.
Clean the optical and mechanical parts of the DUT according to the manufacturer's
instructions.
6.2 Pre-conditioning
Unless otherwise specified, pre-condition each prepared closure or street cabinet DUT for at
least 4 h and each prepared connector, hardened connector or passive component DUT for at
least 2 h at the standard test atmospheric conditions specified in IEC 61300-1.
6.3 Initial examination and measurements
The DUT shall be visually inspected, optically measured and mechanically checked as
required by the relevant specification. The DUT shall be visually inspected according to
IEC 61300‑3‑1. Measure the attenuation and return loss according to IEC 61300‑3‑4 and
IEC 61300-3-6, respectively. For sealed closures, verify the overpressure according to
IEC 61300-2-38.
6.4 Device mounting
Position the DUT centrally on the test surface contained in the shallow box.
Position the DUT as shown in Figure 1, Figure 2 and Figure 3, or Figure 4 and Figure 5.
6.5 Conditioning
a) Place the pad over the DUT.
If another test temperature as in the standard atmospheric conditions is specified, then
condition each prepared closure or street cabinet DUT for at least 4 h and each prepared
connector, hardened connector or passive component DUT for at least 2 h at the specified
test temperature inside a temperature chamber.
b) Smoothly apply the specified load at the specified rate to the pad.
c) Maintain the load for the specified duration.
d) Remove the load.
6.6 Recovery
If the DUT was tested at another test temperature as defined in the standard atmospheric
conditions, then allow the closure or street cabinet DUT for at least 4 h and the connector,
hardened connector or passive component DUT for at least 2 h to recover at standard
atmospheric conditions specified in IEC 61300-1, unless otherwise specified in the relevant
specification.
6.7 Final examinations and measurements
Upon completion of the test, the DUT shall be examined and all necessary observations
recorded as specified in the relevant specification. Careful attention shall be given to the loss
of optical continuity (where tested, use IEC 61300-3-4 and IEC 61300-3-6), broken parts
(IEC 61300-3-1), and damage to seals (IEC 61300-2-38).
Upon completion of the test, the DUT shall be examined and all necessary observations
recorded as specified in the relevant specification. Inspect visually according to

– 12 – IEC 61300-2-10:2021 RLV © IEC 2021
IEC 61300‑3‑1. Measure the attenuation and return loss according to IEC 61300‑3‑4 and
IEC 61300-3-6, respectively. For sealed closures, carry out the sealing test by
IEC 61300‑2‑38.
7 Severity
The severity consists of the combination of the load, load area and the duration. The severity
shall be specified in the relevant specification or taken from the table below.
The severity of the test is dependent upon the magnitude of the load and load area and to a
lesser extent to the rate of load application and the duration of the specified load. The
severity shall be specified in the relevant specification or taken from Table 1.
Table 1 – Severities
Severity Load Pad area Duration
N s
Closures 1 000 ± 50 25 cm 600
Connectors for industrial environment 750 ± 50 25 cm 60

Product type Performance
Load Rate of Duration Test Apparatus
a
category load temperature
N N/s s °C
b
Connectors and passive standard
I 2 200 ± 50 100 60 Figure 1
components
-15 °C and Figure 1
Hardened connectors G and S 1 000 ± 50 50 600
+45 °C
-15 °C and Figure 1
Closures G and S 1 000 ± 50 50 600
+45 °C
Load evenly distributed 1 750 (Pa) × -15 °C and Figure 2 and
on top surface of a W (m) ×
A 50 600 +45 °C Figure 3
street cabinet D (m)
b
Load applied to a street Figure 4 and
standard
A 200 10 600
cabinet door Figure 5
a
The acronyms for the performance categories are according to IEC 61753-1.
b
Standard atmospheric conditions according to IEC 61300-1.

8 Details to be specified
The following details, as applicable, shall be specified in the relevant specification:
– representative ground or floor surface
– load;
– pad area;
– rate of application of load;
– duration of load;
– test temperature(s);
– DUT orientation;
– DUT optically functioning or non-functioning;
– DUT mated or unmated;
– pre-conditioning procedure;
– number of load applications;
– post-conditioning procedure;
– initial examinations and measurements and performance requirements;
– examinations and measurements during test and performance requirements;
– final examinations and measurements and performance requirements.

___________
IEC 61300-2-10 ®
Edition 3.0 2021-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-10: Tests – Crush and load resistance

Dispositifs d’interconnexion et composants passifs fibroniques – Procédures
fondamentales d’essais et de mesures –
Partie 2-10: Essais – Résistance à la compression et à la charge

– 2 – IEC 61300-2-10:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General description . 6
5 Apparatus . 6
5.1 General . 6
5.2 Plate or ground . 6
5.3 Pad . 6
5.4 Force generator . 6
5.5 Gauge . 6
5.6 Temperature chamber . 6
6 Procedure . 10
6.1 DUT preparation . 10
6.2 Pre-conditioning . 10
6.3 Initial examination and measurement . 10
6.4 Device mounting . 10
6.5 Conditioning . 10
6.6 Recovery . 10
6.7 Final examination and measurement . 10
7 Severity . 11
8 Details to be specified . 11

Figure 1 – Crush apparatus . 7
Figure 2 – Apparatus for an evenly distributed load applied to the top surface of a
street cabinet – Front view . 7
Figure 3 – Apparatus for an evenly distributed load applied to the top surface of a
street cabinet – Top view . 8
Figure 4 – Apparatus for load applied to a street cabinet door – Front view . 9
Figure 5 – Apparatus for load applied to a street cabinet door – Top view . 9

Table 1 – Severities . 11

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

Part 2-10: Tests – Crush and load resistance

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.
IEC 61300-2-10 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 includes the following significant technical changes with respect to the previous
edition:
a) addition of testing an evenly distributed static load applied on the top surface of a street
cabinet;
b) addition of testing a static load applied to a street cabinet door;
c) addition of descriptions to perform the test at a specified temperature other as specified in
the standard atmospheric conditions and addition of test temperature(s) in Table 1;

– 4 – IEC 61300-2-10:2021 © IEC 2021
d) update of the severities according to IEC 61753-1:2018.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86B/4405/FDIS 86B/4435/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/standardsdev/publications.
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 2-10: Tests – Crush and load resistance

1 Scope
This part of IEC 61300 evaluates the effect of loads which is possible to occur when fibre
optic devices are exposed to critical situations such as being stepped on, being run over by
vehicle tyres, when an evenly-distributed static load is applied to the top surface of a street
cabinet or when a load is applied to a street cabinet's open door.
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 61300-2-38, 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 61300-3-4, 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 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance
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 61300-2-10:2021 © IEC 2021
4 General description
The device under test (DUT) is exposed to a static compressive load which is applied by a
pad.
5 Apparatus
5.1 General
Depending on the DUT type, the apparatus consists of:
– for connectors, passive components, hardened connectors and closures (see Figure 1);
– for an evenly distributed static load applied to the top surface of a street cabinet
(see Figure 2 and Figure 3);
– for a static load applied to a street cabinet door (see Figure 4 and Figure 5). The force
shall be applied on top of an open door at the point which creates the highest moment on
the hinge of the door.
5.2 Plate or ground
For the crush apparatus shown in Figure 1, a minimum 10 mm thick plate using steel or
material with comparable hardness, large enough for the whole DUT, or as specified in the
relevant specification, is required. The plate is placed on a non-yielding surface. The plate
has rounded edges.
For the apparatus for an evenly distributed static load applied to the top surface of a street
cabinet shown in Figure 2 and Figure 3 and for a static load applied to a street cabinet door
shown in Figure 4 and Figure 5, the street cabinet shall be fixed securely to firm ground.
5.3 Pad
A pad with a minimum thickness of 10 mm, made of steel or a material with comparable
hardness, and with rounded edges fixed to a non-yielding plate is required. The pad shall
have a diameter of 5,6 cm (equals to a surface of 25 cm ) and contacts the DUT with its flat
circular surface, except for the load test with an evenly distributed static load applied to the
top surface of a street cabinet.
5.4 Force generator
The force generator may be any device or apparatus capable of smoothly applying the
specified load at the specified rate.
5.5 Gauge
The gauge shall be a suitable instrument for measuring the load applied to the DUT.
5.6 Temperature chamber
If the test has to be performed at another temperature than ambient, then a temperature
chamber of appropriate size and a temperature sensing device shall be used. The
temperature chamber shall be able to accommodate the DUT, the pad and the force generator,
and maintain the specified temperature within ± 2 °C.

Key
1 force generator and gauge
2 pad
3 device under test
4 plate
F direction of force
Figure 1 – Crush apparatus
Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 ground
F direction of force
Figure 2 – Apparatus for an evenly distributed load applied
to the top surface of a street cabinet – Front view

– 8 – IEC 61300-2-10:2021 © IEC 2021

Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 ground
F axis of force
D depth (example of a street cabinet)
W width (example of a street cabinet)
Figure 3 – Apparatus for an evenly distributed load applied
to the top surface of a street cabinet – Top view

Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 open door of device under test (4a – 90° open, or 4b – maximum opening in normal use or at 180° if no locking
position)
5 ground
F direction of force
Figure 4 – Apparatus for load applied to a street cabinet door – Front view

Key
1 force generator and gauge
2 pad
3 device under test (example of a street cabinet with two doors)
4 open door of device under test (4a – 90° open, or 4b – maximum opening in normal use or at 180° if no locking
position)
5 ground
F direction of force
Figure 5 – Apparatus for load applied to a street cabinet door – Top view

– 10 – IEC 61300-2-10:2021 © IEC 2021
6 Procedure
6.1 DUT preparation
Prepare the DUT in accordance with the relevant specification. Unless otherwise specified,
the DUT shall be subjected to the crush resistance test in a non-operational mode.
Clean the optical and mechanical parts of the DUT according to the manufacturer's
instructions.
6.2 Pre-conditioning
Unless otherwise specified, pre-condition each prepared closure or street cabinet DUT for at
least 4 h and each prepared connector, hardened connector or passive component DUT for at
least 2 h at the standard atmospheric conditions specified in IEC 61300-1.
6.3 Initial examination and measurement
The DUT shall be visually inspected, optically measured and mechanically checked as
required by the relevant specification. The DUT shall be visually inspected according to
IEC 61300‑3‑1. Measure the attenuation and return loss according to IEC 61300‑3‑4 and
IEC 61300-3-6, respectively. For sealed closures, verify the overpressure according to
IEC 61300-2-38.
6.4 Device mounting
Position the DUT as shown in Figure 1, Figure 2 and Figure 3, or Figure 4 and Figure 5.
6.5 Conditioning
a) If another test temperature as in the standard atmospheric conditions is specified, then
condition each prepared closure or street cabinet DUT for at least 4 h and each prepared
connector, hardened connector or passive component DUT for at least 2 h at the specified
test temperature inside a temperature chamber.
b) Smoothly apply the specified load at the specified rate to the pad.
c) Maintain the load for the specified duration.
d) Remove the load.
6.6 Recovery
If the DUT was tested at another test temperature as defined in the standard atmospheric
conditions, then allow the closure or street cabinet DUT for at least 4 h and the connector,
hardened connector or passive component DUT for at least 2 h to recover at standard
atmospheric conditions specified in IEC 61300-1, unless otherwise specified in the relevant
specification.
6.7 Final examination and measurement
Upon completion of the test, the DUT shall be examined and all necessary observations
recorded as specified in the relevant specification. Inspect visually according to
IEC 61300‑3‑1. Measure the attenuation and return loss according to IEC 61300‑3‑4 and
IEC 61300-3-6, respectively. For sealed closures, carry out the sealing test by
IEC 61300‑2‑38.
7 Severity
The severity of the test is dependent upon the magnitude of the load and load area and to a
lesser extent to the rate of load application and the duration of the specified load. The
severity shall be specified in the relevant specification or taken from Table 1.
Table 1 – Severities
Product type Performance Load Rate of Duration Test Apparatus
a
category load temperature
N N/s s °C
b
Connectors and passive standard
I 2 200 ± 50 100 60 Figure 1
components
-15 °C and Figure 1
Hardened connectors G and S 1 000 ± 50 50 600
+45 °C
-15 °C and Figure 1
Closures G and S 1 000 ± 50 50 600
+45 °C
Load evenly distributed 1 750 (Pa) × -15 °C and Figure 2 and
on top surface of a A W (m) × 50 600 +45 °C Figure 3
street cabinet D (m)
b
Load applied to a street standard Figure 4 and
A 200 10 600
cabinet door Figure 5
a
The acronyms for the performance categories are according to IEC 61753-1.
b
Standard atmospheric conditions according to IEC 61300-1.

8 Details to be specified
The following details, as applicable, shall be specified in the relevant specification:
– load;
– pad area;
– rate of application of load;
– duration of load;
– test temperature(s);
– DUT orientation;
– DUT optically fu
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