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Trang 1BRITISH STANDARD BS EN
61300-2-26:2007
Fibre optic interconnecting devices and passive components — Basic test and measurement procedures —
Part 2-26: Tests — Salt mist
The European Standard EN 61300-2-26:2007 has the status of a British Standard
ICS 33.180.20
12&23<,1*:,7+287%6,3(50,66,21(;&(37$63(50,77('%<&23<5,*+7/$:
Trang 2This British Standard was
published under the authority
of the Standards Policy and
Strategy Committee
on 31 August 2007
© BSI 2007
ISBN 978 0 580 54744 7
National foreword
This British Standard is the UK implementation of EN 61300-2-26:2007 It is identical to IEC 61300-2-26:2007 It supersedes BS EN 61300-2-26:1997 which
is withdrawn
The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnecting devices and passive components
A list of organizations represented on this committee can be obtained on request to its secretary
This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application
Compliance with a British Standard cannot confer immunity from legal obligations.
Amendments issued since publication
Amd No Date Comments
Trang 3EUROPEAN STANDARD EN 61300-2-26
NORME EUROPÉENNE
CENELEC
European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members
Ref No EN 61300-2-26:2007 E
English version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures -
Part 2-26: Tests - Salt mist
(IEC 61300-2-26:2006)
Dispositifs d'interconnexion
et composants passifs à fibres optiques -
Méthodes fondamentales d'essais
et de mesures -
Partie 2-26: Essais -
Brouillard salin
(CEI 61300-2-26:2006)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und Messverfahren - Teil 2-26: Prüfungen -
Salznebel (IEC 61300-2-26:2006)
This European Standard was approved by CENELEC on 2007-05-01 CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member
This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom
Trang 4Foreword
The text of document 86B/2267/CDV, future edition 2 of IEC 61300-2-26, prepared by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure and was approved by CENELEC as
EN 61300-2-26 on 2007-05-01
EN 61300-2-26:2007 supersedes EN 61300-2-26:1997
Specific technical changes include the test conditions such as concentration, pH value and temperature
of salt solution, relative humidity of air and regulations on final measurements
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical national standard or by endorsement (dop) 2008-02-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-05-01
Annex ZA has been added by CENELEC
Endorsement notice
The text of the International Standard IEC 61300-2-26:2006 was approved by CENELEC as a European Standard without any modification
EN 61300-2-26:2007
Trang 5CONTENTS
1 Scope 4
2 Normative references 4
3 General description 4
4 Apparatus 4
4.1 Chamber 4
4.2 Water 5
4.3 Atomizer 5
4.4 Heater 5
4.5 Humidifier 5
4.6 Salt mist 5
5 Procedure 6
5.1 Preparation of specimens 6
5.2 Preconditioning 6
5.3 Initial measurements 6
5.4 Conditioning 6
5.5 Recovery 7
5.6 Final measurements 7
6 Severity 7
7 Details to be specified 7
Bibliography 9
EN 61300-2-26:2007 – 3 – Annex ZA (normative) Normative references to international publications with their corresponding European publications 10
Trang 6FIBRE 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 a device, and to determine if dissimilar metals have been well
finished to prevent corrosion
2 Normative references
The following referenced documents are indispensable for the application 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, 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 61300-3-1, 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 in return loss
3 General description
This procedure is conducted in accordance with IEC 60068-2-11, test Ka The specimen is exposed to a salt mist environment within a test chamber maintained at a temperature of
35 °C
4 Apparatus
4.1 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 that:
a) the conditions in the chamber are within the limits specified;
b) a sufficiently large volume with constant, homogeneous conditions (not affected by turbulence) is available; these conditions should not be influenced by the specimens under test;
Trang 7c) no direct spray impinges upon the specimens under test;
d) drops of liquid accumulating on the ceiling, the walls or other parts cannot drip on the
specimens;
e) the chamber is properly vented to prevent pressure build-up and allow uniform distribution
of salt mist The discharge end of the vent shall be protected from squalls which can cause strong air currents in the chamber
4.2 Water
Use distilled, demineralized or deionized water to obtain the specified humidity No rust or corrosion contaminates shall be imposed on the specimen by the test facility
4.3 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
4.4 Heater
A chamber heating means and control
4.5 Humidifier
A means for humidifying the air at a temperature above the chamber temperature
4.6 Salt mist
4.6.1 Salt solution
4.6.1.1 Concentration
The salt used for the test shall be sodium chloride (NaCl) containing, when dry, not more than 0,1 % sodium iodide and not more than 0,3 % of total impurities
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 demineralized water
4.6.1.2 pH value
The pH value of the solution shall be between 6,5 and 7,2, at a temperature of (35 ± 2) °C
The pH value shall be maintained within this range during conditioning; for this purpose, diluted hydrochloric acid or sodium hydroxide may be used to adjust the pH value, provided that the concentrations of NaCl remain within the prescribed limits
The pH shall be measured when preparing each new batch of solution
4.6.1.3 The sprayed solution shall not be re-used
4.6.2 Air supply
The compressed air entering the atomizer(s) shall be essentially free from all impurities, such
as oil and dust
EN 61300-2-26:2007
– 5 –
Trang 8Means shall be provided to humidify and warm the compressed air as required to meet the operating conditions The air pressure shall be suitable to produce a finely divided dense mist with the atomizer(s) used
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
5 Procedure
5.1 Preparation of specimens
Prepare and clean the specimen in accordance with the manufacturer’s instructions
Visually check (see IEC 61300-3-1) that the attachment of the cable to the fibre optic device
is not damaged
5.2 Preconditioning
Pre-condition the specimen for 2 h at the standard test conditions as defined in IEC 61300-1, unless otherwise specified in the relevant specification
5.3 Initial measurements
Complete initial examinations and measurements on the specimen as required by the relevant specification
5.4 Conditioning
Conduct the procedure in accordance with IEC 60068-2-11, test Ka The preparation of the specimen shall be in accordance with the relevant specification Unless otherwise specified, the specimen shall be subjected to the test in a non-operational mode
Stabilize the chamber and the specimen to standard atmospheric conditions Place the specimen in the chamber in its normal operating position including hook-ups to peripheral equipment (when required)
Adjust the chamber temperature, humidity, salt concentration and pH to the specified severity
Where optical measurements are required during the test, measurements shall be made at a maximum interval of 1 h Measurements shall be made in accordance with IEC 61300-3-3
At the completion of the test, allow the specimen to remain in the chamber while the
temperature is gradually reduced to standard atmospheric conditions
Trang 95.5 Recovery
Allow the specimen to remain under standard test conditions for 2 h, as defined in IEC 61300-1, unless otherwise specified in the relevant specification Clean the specimen in accordance with the manufacturer’s instructions
5.6 Final measurements
On completion of the test, remove all fixtures and make final measurements, as defined by the relevant specification, to ensure that there is no permanent damage to the specimen The results of the final measurement shall be within the limit established in the relevant specification
As a minimum, the samples shall be visually examined in accordance with IEC 61300-3-1 for the presence of corrosion and material degradation, and shall be functionally tested
6 Severity
The severity consists of the duration of exposure The severity shall be specified in the relevant specification
The following preferred severities are non-mandatory severities, which may be specified for this procedure:
Temperature: (35 ± 2) °C
Salt concentration: (5 ± 1) %
pH: between 6,5 and 7,2
Humidity: at least 85 %
Duration
h
16
24
48
96
168
336
672
7 Details to be specified
The following details, as applicable, shall be specified in the relevant specification:
− duration;
− mist density;
− specimen optically functioning or non-functioning;
− pre-conditioning procedure;
− recovery procedure;
− initial examinations and measurements and performance requirements;
EN 61300-2-26:2007
– 7 –
Trang 10− examinations and measurements during test and performance requirements;
− final examinations and measurements and performance requirements;
− deviations from test procedure;
− additional pass/fail criteria
Trang 11Bibliography
IEC 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-4: Examinations and measurements – Attenuation
_
EN 61300-2-26:2007
– 9 –
NOTE Harmonized as EN 61300-3-4:2001 (not modified)
Trang 12Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application 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
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies
Publication Year Title EN/HD Year
IEC 60068-2-11 -1) Environmental testing -
Part 2: Tests - Test Ka: Salt mist
EN 60068-2-11 19992)
IEC 61300-1 -1) Fibre optic interconnecting devices and
passive components - Basic test and measurement procedures -
Part 1: General and guidance
EN 61300-1 20032)
IEC 61300-3-1 -1) Fibre optic interconnecting devices and
passive components - Basic test and measurement procedures -
Part 3-1: Examinations and measurements - Visual examination
EN 61300-3-1 20052)
IEC 61300-3-3 -1) 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
EN 61300-3-3 20032)
1)
Undated reference.
2)
Valid edition at date of issue.
EN 61300-2-26:2007
Trang 13blank
Trang 14BSI
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