IEC 61300-2-26:2023

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-26: Tests - Salt mist

IEC 61300-2-26: 2023 provides a test to determine the corrosion resistance of the metals used in the construction of fibre optic interconnecting devices and passive components. This document determines if dissimilar metals have been well finished to prevent corrosion. The requirements of the tests for these devices are defined in IEC 61753-1. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) addition of Clause 3, Terms and definitions;
b) harmonisation with IEC 61753-1:2018 and addition of Table 2;
c) harmonisation with IEC 60068-2-11:2021

Dispositifs d'interconnexion et composants passifs fibroniques - Procédures fondamentales d'essais et de mesures - Partie 2-26: Essais - Brouillard salin

IEC 61300-2-26: 2023 fournit un essai pour la détermination de la résistance à la corrosion des métaux qui sont utilisés dans la construction des dispositifs d'interconnexion et des composants passifs. Le présent document détermine si la finition des métaux de nature différente est appropriée pour éviter la corrosion. Les exigences des essais pour ces dispositifs sont définies dans l'IEC 61753-1. Cette troisième édition annule et remplace la deuxième édition parue en 2006. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout de l'Article 3, Termes et définitions;
b) harmonisation avec l'IEC 61753-1:2018 et ajout du Tableau 2;
c) harmonisation avec l'IEC 60068-2-11:2021.

General Information

• Status: Published
• Publication Date: 18-Jul-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: 18-Aug-2023
• Completion Date: 19-Jul-2023

Relations

• Revises: IEC 61300-2-26:2006 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-26: Tests - Salt mist
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61300-2-26
®

Edition 3.0 2023-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-26: Tests – Salt mist

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-26: Essais – Brouillard salin
IEC 61300-2-26:2023-07(en-fr)

---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61300-2-26

®


Edition 3.0 2023-07




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures –

Part 2-26: Tests – Salt mist



Dispositifs d'interconnexion et composants passifs fibroniques – Procédures

fondamentales d'essais et de mesures –


Partie 2-26: Essais – Brouillard salin












INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE





ICS 33.180.20  ISBN 978-2-8322-7226-8




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – IEC 61300-2-26:2023 © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General description . 6
5 Salt solution . 6
5.1 Preparation of salt solution . 6
5.2 pH adjustment . 6
5.3 Filtration . 6
5.4 Re-use . 7
6 Apparatus . 7
6.1 Chamber . 7
6.2 Atomizer . 7
6.3 Air supply . 7
6.4 Collecting devices . 8
7 Verification of the corrosivity of the apparatus . 8
8 DUT . 8
9 Procedure . 8
9.1 Preparation of DUT . 8
9.2 Preconditioning . 8
9.3 Initial examinations and measurements . 9
9.4 Conditioning . 9
9.5 Recovery . 9
9.6 Final examinations and measurements . 10
10 Severity . 10
11 Details to be specified and reported. 11
Bibliography . 12

Table 1 – Suggested values for the temperature of the hot water in the saturation tower . 8
Table 2 – Summary of test conditions . 9
Table 3 – Recommended severities . 10

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IEC 61300-2-26:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

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

Part 2-26: Tests – Salt mist

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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shall not be held responsible for identifying any or all such patent rights.
IEC 61300-2-26 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 2006. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of Clause 3, Terms and definitions;
b) harmonisation with IEC 61753-1:2018 and addition of Table 2;

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– 4 – IEC 61300-2-26:2023 © IEC 2023
c) harmonisation with IEC 60068-2-11:2021.
The text of this standard is based on the following documents:
Draft Report on voting
86B/4764/FDIS 86B/4777/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 of 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,
• replaced by a revised edition, or
• amended.

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IEC 61300-2-26:2023 © IEC 2023 – 5 –
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-26: Tests – Salt mist



1 Scope
This part of IEC 61300 provides a test to determine the corrosion resistance of the metals used
in the construction of fibre optic interconnecting devices and passive components. This
document determines if dissimilar metals have been well finished to prevent corrosion. The
requirements of the tests for these devices are defined in IEC 61753-1.
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 60068-2-11:2021, Environmental testing – Part 2: Tests – Test Ka: Salt mist
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 61300-3-3, 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 61300-3-35, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-35: Examinations and measurements – Visual inspection of
fibre optic connectors and fibre-stub transceivers
IEC 61753 (all parts), Fibre optic interconnecting devices and passive components –
Performance standard
IEC 62005 (all parts), Fibre optic interconnecting devices and passive components – Reliability

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– 6 – IEC 61300-2-26:2023 © IEC 2023
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61300-1 apply.
ISO and IEC maintain terminological 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
4 General description
WARNING – This document can involve hazardous materials, operations and equipment. This
document does not propose to address all of the safety concerns, if any, associated with its
use. It is the responsibility of the user of this document to establish appropriate safety and
health practices and determine the applicability of regulatory limitations prior to use.
This procedure is conducted in accordance with IEC 60068-2-11, test Ka. The device under test
(DUT) is exposed to a salt mist environment within a test chamber maintained at a temperature
of (35 ± 2) °C.
The relationship between the deterioration provided by this test and long-term exposure of
products to salt laden atmospheres cannot be readily determined. But it provides a useful
means of comparing resistance of products to deterioration from salt laden atmospheres.
5 Salt solution
5.1 Preparation of salt solution
The salt solution concentration shall be (5 ± 1) % by weight. The solution shall be prepared by
dissolving (5 ± 1) parts by weight of salt in 95 parts by weight of distilled or deionized water
with a conductivity not higher than 20 µS/cm at (25 ± 2) °C. The sodium chloride concentration
of the sprayed solution collected shall be (5 ± 1) % by weight. The specific gravity range for a
5 % by weight salt solution concentration is 1,029 to 1,036 at 25 °C.
The sodium chloride shall not contain a mass fraction of the heavy metals copper (Cu), nickel
(Ni), and lead (Pb) in total more than 0,005 %. It shall not contain a mass fraction of sodium
iodide more than 0,1 % and a mass fraction of total impurities more than 0,5 %, calculated for
dry salt.
5.2 pH adjustment
If necessary, adjust the pH of the salt solution so that pH of the sprayed solution collected within
the test chamber is 6,5 to 7,2 at (25 ± 2) °C. Check the pH using electrometric measurement.
Measurements of pH shall be done using electrodes suitable for measuring in weakly buffered
sodium chloride solution in deionized water.
Make any necessary corrections by adding hydrochloric acid, sodium hydroxide or sodium
bicarbonate solution of analytical grade.
5.3 Filtration
If necessary, filter the solution before placing it in the reservoir of the apparatus, to remove any
solid matter which might block the apertures of spraying device.

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IEC 61300-2-26:2023 © IEC 2023 – 7 –
5.4 Re-use
The sprayed solution shall not be re-used.
6 Apparatus
6.1 Chamber
The chamber for this test shall be constructed of such materials that will not influence the
corrosive effects of the salt mist.
The detailed construction of the chamber, including the method of producing the mist, is optional,
provided the following is applied.
a) The operating conditions in the chamber shall be within the limits specified.
b) The chamber shall have sufficient volume and performance that the introduction of the DUTs
will not detrimentally affect the control of the conditions.
c) The solution shall not be sprayed directly onto the DUTs but rather spread throughout the
test chamber so that it falls naturally down to them.
d) The upper parts of the chamber shall be designed so that drops of sprayed solution formed
on its surface do not fall on the DUTs being tested.
e) The chamber shall be properly vented to prevent pressure build-up and allow uniform
distribution of salt mist. The discharge end of the vent shall be protected from strong air
currents which can have a negative effect to the air flow.
f) The test temperature shall be measured at least 100 mm from walls and radiant heat sources.
6.2 Atomizer
The atomizer(s) used shall be of such design and construction as to produce a finely divided,
wet, dense mist. The atomizer(s) shall be made of material that is non-reactive to the salt
solution.
6.3 Air supply
The compressed air entering the atomizer(s) shall be essentially free from all impurities, such
as oil and dust.
Means shall be provided to humidify and warm the compressed air as required to meet the
operating conditions. The atomizing pressure shall be at an over pressure of 70 kPa to 170 kPa.
The pressure is typically (98 ± 10) kPa but can vary depending on the type of the chamber and
atomizer used. The appropriate temperature depends on the pressure used and on the type of
atomizer. Temperature, pressure or humidification, or a combination thereof, shall be adjusted
so that the rate of collection of the spray in the chamber and the concentration of the collected
spray are kept within the specified limits (see Table 2). A commonly used humidifier is the
saturation tower, where temperature and pressure are controllable. Table 1 gives suggested
values on temperature and pressure combinations for the saturation tower. Distilled or
deionized water with a conductivity not higher than 20 µS/cm at (25 ± 2) °C shall be used for
humidification of spray air.
To ensure against clogging of the atomizer by salt deposition, it is recommended that the air
have a relative humidity of at least 85 % at the point of release from the nozzle. A satisfactory
method is to pass the air in very fine bubbles through a tower containing heated water which
shall be automatically maintained at a constant level. The temperature of this water should be
at least 35 °C. The permissible water temperature increases with increasing volume of air and
with decreasing heat insulation of the chamber and the surroundings of the chamber. The
temperature should not exceed a value above which an excess of moisture is introduced into
the chamber or a value which makes it impossible to meet the requirements for operating
temperature.

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– 8 – IEC 61300-2-26:2023 © IEC 2023
Table 1 – Suggested values for the temperature
of the hot water in the saturation tower
Atomizing Suggested values for the temperature of the hot water in
overpressure the saturation tower when performing the salt mist test
kPa °C
70 45
84 46
98 48
112 49
126 50
140 52
160 53
170 54

6.4 Collecting devices
At least two collecting devices shall be used to check the homogeneity of the spray of the
chamber. A collecting device shall consist of a collecting funnel which has a diameter of (100 ± 2)
2
mm, corresponding to a collecting area of approximately 80 cm . The funnel should be made of
chemically inert material and its stem inserted into a suitable measuring container.
7 Verification of the corrosivity of the apparatus
The corrosivity of the apparatus, especially the chamber, should be verified at regular intervals
to check the reproducibility of the test results. IEC 60068-2-11 describes the detail information.
8 DUT
The sample size and type of DUT shall be selected in accordance with the relevant part of the
IEC 61753 series performance standard or IEC 62005 series reliability specification.
9 Procedure
9.1 Preparation of DUT
Prepare the DUT in accordance with the manufacturer’s instructions.
Visually check the DUT for any damages according to IEC 61300-3-1.
9.2 Preconditioning
Inspect the optical connector endface according to IEC 61300-3-35. Clean the mechanical and
optical alignment parts of the DUT according to the manufacturer's instructions, if necessary.
The cleaning method used shall not interfere with the effect of the salt mist on the DUT.
NOTE Cleaning methods for optical connectors and optical transceivers are described in IEC TR 62627-01 and
IEC TR 62572-4, respectively.
Unless otherwise specified, expose the DUT for at least 2 h at the standard atmospheric
conditions as defined in IEC 61300-1.

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IEC 61300-2-26:2023 © IEC 2023 – 9 –
9.3 Initial examinations and measurements
Perform initial examinations and measurements as required by the relevant part of the
IEC 61753 series performance standard or IEC 62005 series reliability specification. Complete
initial visual examination on the DUT as required by IEC 61300-3-1. For optical properties
measurement, the equipment and measurement methods shall be according to IEC 61300-3-3
for change in attenuation and return loss measurement. The optical performance measurement
shall be performed at the wavelength(s) specified in the relevant part of the IEC 61753 series
performance standard or IEC 62005 series reliability specification.
9.4 Conditioning
Conduct the procedure in accordance with IEC 60068-2-11, test Ka. The angle at which the
surface of the DUT is exposed in the chamber is very important. Unless otherwise specified,
DUTs shall be mounted at an angle of 20 ° ± 2 ° to the vertical, with the area of primary interest
facing up.
Unless otherwise specified, the DUT shall be subjected to the test in a non-operational mode.
Stabilize the chamber and the DUT to standard atmospheric conditions. Place the DUT in the
chamber in its normal operating position including hook-ups to peripheral equipment (when
required).
Adjust the chamber temperature and average collection rate as well as maintain the conditions
of the salt concentration of the solution from the atomizer and collected solutions as noted in
Table 2 for the severity provided in Table 3.
Table 2 summarises the test conditions.
Table 2 – Summary of test conditions
Parameters Conditions
Temperature (35 ± 2) °C
Average collection rate of a horizontal collecting (1,5 ± 0,5) ml/h
2
area of 80 cm
Concentration of sodium chloride (collected (5 ± 1) %
solution)
pH (collected solution) 6,5 to 7,2
(at 25°C ± 2°C)

At the completion of the test, allow the DUT to remain in the chamber while the temperature is
gradually reduced to standard atmospheric conditions.
9.5 Recovery
At the completion of the test, unless otherwise specified, the DUT shall be washed in running
tap water for 5 min, rinsed in distilled or deionized water. The temperature of the water used
for washing shall not exceed 35 °C.
Unless otherwise specified, allow the DUT to remain under standard atmospheric conditions for
2 h, as defined in IEC 61300-1.
Inspection and cleaning procedures of the interconnecting parts should be used prior to
reconnecting with optical measurement equipment. For passive optical components having
connector plugs/adaptors, interconnecting parts should be inspected, if necessary.

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– 10 – IEC 61300-2-26:2023 © IEC 2023
9.6 Final examinations and measurements
On completion of the test, remove all fixtures and make final measurements, as defined by the
relevant part of the IEC 61753 series performance standard or IEC 62005 series reliability
specification. Visually examine the DUT in accordance with IEC 61300-3-1 for the presence of
corrosion and material degradation.
When optical measurements are required, the equipment and measurement methods shall be
according to IEC 61300-3-3 for change in attenuation and return loss measurement. The results
of the final measurement shall be within the limit established in the acceptance criteria of the
relevant part of the IEC 61753 series performance standard or IEC 62005 series reliability
specification.
When sealing performance is requested for the hardened connectors and the sealed closures
to be evaluated, unless oth
...