prEN IEC 61300-2-21:2025

SLOVENSKI STANDARD
01-april-2025
Optični spojni elementi in pasivne komponente - Osnovni preskusni in merilni
postopki - 2-21. del: Preskusi - Sestavljeno ciklično preskušanje temperatura-vlaga
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-21: Tests - Composite temperature/humidity cyclic test
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und
Messverfahren - Teil 2-21: Prüfungen - kombinierte Temperatur/Feuchte, zyklisch
Dispositifs d'interconnexion et composants passifs à fibres optiques - Méthodes
fondamentales d'essais et de mesures - Partie 2-21: Essais - Essai cyclique composite
de température et d'humidité
Ta slovenski standard je istoveten z: prEN IEC 61300-2-21:2025
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

86B/4988/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61300-2-21 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-01-31 2025-04-25
SUPERSEDES DOCUMENTS:
86B/4945/CD, 86B/4957A/CC
IEC SC 86B : FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
SECRETARIAT: SECRETARY:
Japan Mr Ryo Koyama
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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CENELEC, is drawn to the fact that this Committee Draft for
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The CENELEC members are invited to vote through the
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clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Fibre optic interconnecting devices and passive components - Basic test and measurement
procedures - Part 2-21: Tests - Composite temperature/humidity cyclic test

PROPOSED STABILITY DATE: 2032
NOTE FROM TC/SC OFFICERS:
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IEC CDV 61300-2-21/Ed3 © IEC 2025 2  86B/4988/CDV
1 CONTENTS
2 1 Scope . 5
3 2 Normative references . 5
4 3 Terms and definitions . 6
5 4 General . 6
6 5 Apparatus . 6
7 5.1 General . 6
8 5.2 Chamber for the exposure to high temperature and humidity . 6
9 5.3 Chamber for exposure to cold . 6
10 5.4 Temperature and humidity chamber . 7
11 5.5 Optical measurement equipment . 7
12 6 Procedure . 7
13 6.1 Preparation of DUT . 7
14 6.2 Preconditioning . 7
15 6.3 Initial examinations and measurements . 8
16 6.4 Conditioning . 9
17 6.4.1 General . 9
18 6.4.2 Description of 24 h cycle . 9
19 6.4.2.1 Description of high temperature and humidity subcycle . 9
20 6.4.2.2 Description of cold subcycle . 10
21 6.4.3 Examinations and measurements during test . 12
22 6.5 Recovery . 12
23 6.6 Final examinations and measurements . 12
24 7 Severity. 12
25 8 Details to be specified and reported . 13
27 Figure 1 – Preconditioning:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: 6
28 Figure 2 – Exposure to high temperature and humidity followed by exposure to cold                9
IEC CDV 61300-2-21/Ed3 © IEC 2025 3 86B/4988/CDV
32 INTERNATIONAL ELECTROTECHNICAL COMMISSION
33 ____________
35 FIBRE OPTIC INTERCONNECTING
36 DEVICES AND PASSIVE COMPONENTS –
37 BASIC TEST AND MEASUREMENT PROCEDURES –
39 Part 2-21: Tests –
40 Composite temperature/humidity cyclic test
43 FOREWORD
44 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national
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46 questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC
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51 International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two
52 organizations.
53 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus
54 of opinion on the relevant subjects since each technical committee has representation from all interested IEC National
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56 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in
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61 corresponding national or regional publication shall be clearly indicated in the latter.
62 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment
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64 independent certification bodies.
65 6) All users should ensure that they have the latest edition of this publication.
66 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its
67 technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature
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69 or reliance upon, this IEC Publication or any other IEC Publications.
70 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable
71 for the correct application of this publication.
72 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC
73 shall not be held responsible for identifying any or all such patent rights.
74 International Standard IEC 61300-2-21 has been prepared by subcommittee 86B: Fibre optic
75 interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
76 This third edition cancels and replaces the second edition published in 2009. It constitutes a technical
77 revision. The changes with respect to the previous edition are:
78 – to reconsider the whole parts of the standard;
79 – update of Figures 1 and 2 according to IEC 60068-2-38: 2021.
80 The text of this standard is based on the following documents:
FDIS Report on voting
IEC CDV 61300-2-21/Ed3 © IEC 2025 4 86B/4988/CDV
86B/XX/FDIS 86B/XX/RVD
81 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
82 A list of all the parts of IEC 61300 series, under the general title, Fibre optic interconnecting devices and
83 passive components – Basic test and measurement procedures, can be found on the IEC website.
84 The committee has decided that the contents of this publication will remain unchanged until the stability
85 date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific
86 publication. At this date, the publication will be
87 • reconfirmed,
88 • withdrawn,
89 • replaced by a revised edition, or
90 • amended.
IEC CDV 61300-2-21/Ed3 © IEC 2025 5 86B/4988/CDV
91 FIBRE OPTIC INTERCONNECTING
92 DEVICES AND PASSIVE COMPONENTS –
93 BASIC TEST AND MEASUREMENT PROCEDURES –
95 Part 2-21: Tests –
96 Composite temperature/humidity cyclic test
100 1 Scope
101 The purpose of this part of IEC 61300 is to determine the resistance of a fibre optic device or component
102 to the deteriorative effects of high temperature, humidity and cold conditions.
103 It is intended to reveal defects in a device under test (DUT) caused by breathing as opposed to
104 absorption of moisture. The test covers the effect of the freezing of trapped water in cracks and fissures
105 as well as condensation. However, the degree of condensation will vary depending on the size and
106 thermal mass of the DUT.
107 This test differs from other cyclic damp heat tests in that it derives its increased severity from:
108 a) a greater number of temperature variations leading to pumping actions in a given time;
109 b) a greater cyclic temperature range;
110 c) a higher rate of change of temperature;
111 d) the inclusion of a number of excursions to sub-zero temperature.
112 This type of test is particularly important for fibre optic devices or components made of a variety of
113 different materials.
114 2 Normative references
115 The following referenced documents are indispensable for the application of this document. For dated
116 references, only the edition cited applies. For undated references, the latest edition of the referenced
117 document (including any amendments) applies.
118 IEC 60068-2-38: 2021, Environmental testing – Part 2-38: Tests – Test Z/AD: Composite
119 temperature/humidity cyclic test
120 IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and
121 measurement procedures – Part 3-1: Examinations and measurements – Visual examination
122 IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and
123 measurement procedures – Part 1: General and guidance
124 IEC 61300-3-3
...