IEC 60794-1-21:2015
(Main)Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods
Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods
IEC 60794-1-21:2015 applies to optical fibre cables for use with telecommunication equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The object of this standard is to define test procedures to be used in establishing uniform requirements for mechanical requirement performance. Throughout this standard the wording "optical cable" may also include optical fibre units, microduct fibre units, etc. General requirements and definitions are given in IEC 60794-1-20 and a complete reference guide to test method of all types in the IEC 60794-1-2. This first edition of IEC 60794-1-21 cancels and replaces the mechanical tests part of the second edition of IEC 60794-1-2, published in 2003. It constitutes a technical revision. Keywords: optical fibre cables for use with telecommunication equipment, test procedures
This publication is to be read in conjunction with IEC 60794-1-1:2011.
Câbles à fibres optiques - Partie 1-21: Spécification générique – Procédures fondamentales d’essais des câbles optiques – Méthodes d’essai mécanique
IEC 60794-1-21:2015 s'applique aux câbles à fibres optiques destinés à être utilisés avec des équipements de télécommunication et des dispositifs utilisant des techniques analogues, ainsi qu'aux câbles constitués de fibres optiques d'une part et de conducteurs électriques d'autre part.L'objet de la présente norme est de définir les procédures d'essai à utiliser en vue d'établir des exigences uniformes pour les performances d'exigence mécanique. Dans la présente norme, le terme "câble optique" peut également englober les unités de fibres optiques, les unités de fibres en microconduit, etc. Les exigences générales et les définitions sont données dans l'IEC 60794-1-20 et un guide de référence complet pour tous les types de méthode d'essai est contenu dans l'IEC 60794-1-2. Cette première édition de l'IEC 60794-1-21 annule et remplace la partie des essais mécaniques de la deuxième édition de l'IEC 60794-1-2, publiée en 2003. Elle constitue une révision technique.
Mots clés : câbles à fibres optiques destinés à être utilisés avec des équipements de télécommunication, procédures d'essai
General Information
Relations
Overview
IEC 60794-1-21:2015 is the International Electrotechnical Commission (IEC) generic specification that defines basic mechanical test procedures for optical fibre cables. It applies to optical fibre cables used with telecommunication equipment - including cables that combine optical fibres and electrical conductors - and covers optical fibre units and microduct fibre units. The standard establishes uniform mechanical test methods used to verify cable performance and durability under handling, installation and in-service conditions.
Key topics and technical focus
The standard organizes mechanical tests into defined methods (E1–E13) and specifies sample preparation, apparatus, procedures, requirements and reporting details for each test. Major topics include:
- Tensile performance (E1) - procedures for assessing cable strength under axial load.
- Abrasion (E2) - sheath and marking abrasion resistance tests.
- Crush (E3) - plate/plate and mandrel/plate crush testing to evaluate local compressive resistance.
- Impact (E4) - energy-impact procedures to simulate tool or falling-object damage.
- Stripping and strippability (E5A–E5C) - stripping force stability for cabled fibres, ribbons and buffered fibres.
- Repeated bending (E6), torsion (E7), flexing (E8) - dynamic mechanical fatigue and deformation tests.
- Kink (E10), bend (E11) - evaluating cable behavior at tight radii or induced kinks.
- Shotgun damage (E13) - tests and simulations representing multiple puncture or high-energy debris impact.
For each method the standard sets out: object, sample length and preparation, required apparatus, detailed procedures, pass/fail reporting requirements, and information that must be specified by manufacturers or test bodies.
Applications and users
IEC 60794-1-21:2015 is essential for:
- Cable manufacturers establishing product test regimes and quality assurance.
- Independent test laboratories performing certified mechanical testing.
- Network operators and installers specifying procurement criteria and verifying in-service robustness.
- Design engineers and R&D teams validating new jackets, constructions or cable components.
- Procurement and compliance officers ensuring contractual and regulatory conformity.
Using these standardized mechanical test procedures helps reduce variability between suppliers, supports lifecycle reliability assessments, and informs installation practice and warranty claims.
Related standards
- IEC 60794-1-1:2011 (to be read in conjunction with IEC 60794-1-21)
- IEC 60794-1-20 (general requirements and definitions)
- IEC 60794-1-2 (reference guide to all test methods; IEC 60794-1-21 supersedes the mechanical tests portion of the 2003 edition)
Keywords: IEC 60794-1-21:2015, optical fibre cables, mechanical test methods, test procedures, tensile, abrasion, crush, impact, bending, torsion, cable testing.
Frequently Asked Questions
IEC 60794-1-21:2015 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods". This standard covers: IEC 60794-1-21:2015 applies to optical fibre cables for use with telecommunication equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The object of this standard is to define test procedures to be used in establishing uniform requirements for mechanical requirement performance. Throughout this standard the wording "optical cable" may also include optical fibre units, microduct fibre units, etc. General requirements and definitions are given in IEC 60794-1-20 and a complete reference guide to test method of all types in the IEC 60794-1-2. This first edition of IEC 60794-1-21 cancels and replaces the mechanical tests part of the second edition of IEC 60794-1-2, published in 2003. It constitutes a technical revision. Keywords: optical fibre cables for use with telecommunication equipment, test procedures This publication is to be read in conjunction with IEC 60794-1-1:2011.
IEC 60794-1-21:2015 applies to optical fibre cables for use with telecommunication equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The object of this standard is to define test procedures to be used in establishing uniform requirements for mechanical requirement performance. Throughout this standard the wording "optical cable" may also include optical fibre units, microduct fibre units, etc. General requirements and definitions are given in IEC 60794-1-20 and a complete reference guide to test method of all types in the IEC 60794-1-2. This first edition of IEC 60794-1-21 cancels and replaces the mechanical tests part of the second edition of IEC 60794-1-2, published in 2003. It constitutes a technical revision. Keywords: optical fibre cables for use with telecommunication equipment, test procedures This publication is to be read in conjunction with IEC 60794-1-1:2011.
IEC 60794-1-21:2015 is classified under the following ICS (International Classification for Standards) categories: 33.180.10 - Fibres and cables. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60794-1-21:2015 has the following relationships with other standards: It is inter standard links to IEC 60794-1-129:2025, IEC 60794-1-107:2025, IEC 60794-1-130:2025, IEC 60794-1-119:2025, IEC 60794-1-110:2025, IEC 60794-1-101:2024, IEC 60794-1-124:2025, IEC 60794-1-111:2023, IEC 60794-1-104:2024, IEC 60794-1-21:2015/AMD1:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase IEC 60794-1-21:2015 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.
Standards Content (Sample)
IEC 60794-1-21 ®
Edition 1.0 2015-03
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 1-21: Generic specification – Basic optical cable test procedures –
Mechanical test methods
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 60794-1-21 ®
Edition 1.0 2015-03
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 1-21: Generic specification – Basic optical cable test procedures –
Mechanical test methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-2320-8
– 2 – IEC 60794-1-21:2015 © IEC 2015
CONTENTS
FOREWORD . 9
1 Scope and object . 11
2 Normative references . 11
3 Method E1: Tensile performance . 12
3.1 Object . 12
3.2 Sample length . 12
3.3 Apparatus . 12
3.4 Procedure . 12
3.4.1 General requirements . 12
3.4.2 Procedure . 13
3.5 Requirements . 13
3.6 Details to be specified . 13
3.7 Details to be reported . 14
4 Method E2: Abrasion . 15
4.1 Object . 15
4.2 Sample . 15
4.3 Method E2A: Abrasion resistance of optical fibre cable sheaths . 15
4.3.1 Apparatus . 15
4.3.2 Procedure . 16
4.3.3 Requirements . 16
4.3.4 Details to be specified . 16
4.4 Method E2B: Abrasion resistance of optical fibre cable markings . 16
4.4.1 Apparatus . 16
4.4.2 Procedure . 17
4.4.3 Requirements . 17
4.4.4 Details to be specified . 17
5 Method E3: Crush . 18
5.1 Object . 18
5.2 Sample . 18
5.3 Method E3A: Plate/plate . 18
5.3.1 Apparatus . 18
5.3.2 Procedure . 18
5.4 Method E3B: Mandrel/plate . 19
5.4.1 Apparatus . 19
5.4.2 Procedure . 19
5.5 Requirements . 19
5.6 Details to be specified . 19
6 Method E4: Impact . 21
6.1 Object . 21
6.2 Sample . 21
6.2.1 Sample length . 21
6.2.2 Termination . 21
6.3 Apparatus . 21
6.4 Procedure . 22
6.5 Requirements . 22
6.6 Details to be specified . 22
7 Method E5A: Stripping force stability of cabled optical fibres . 24
7.1 Object . 24
7.2 Sample . 24
7.2.1 Sample length . 24
7.2.2 Sample preparation . 24
7.3 Apparatus . 24
7.4 Procedure . 25
7.5 Requirements . 25
7.6 Details to be specified . 25
8 Method E5B: Strippability of optical fibre ribbons . 25
8.1 Object . 25
8.2 Sample . 25
8.3 Apparatus . 25
8.3.1 General . 25
8.3.2 Stripping tool . 25
8.3.3 Motor and slide (if used) . 26
8.3.4 Positioning and holding equipment . 26
8.3.5 Alcohol wipe . 26
8.4 Procedure . 26
8.5 Requirements . 27
8.6 Details to be specified . 27
9 Method E5C: Strippability of buffered optical fibres . 27
9.1 Object . 27
9.2 Sample . 27
9.3 Apparatus . 27
9.4 Procedure . 28
9.5 Requirements . 28
9.6 Details to be specified . 28
10 Method E6: Repeated bending . 28
10.1 Object . 28
10.2 Sample . 28
10.2.1 Sample length . 28
10.2.2 Termination . 29
10.3 Apparatus . 29
10.4 Procedure . 29
10.5 Requirements . 29
10.6 Details to be specified . 30
11 Method E7: Torsion . 30
11.1 Object . 30
11.2 Sample . 30
11.3 Apparatus . 31
11.4 Procedure . 31
11.5 Requirements . 32
11.6 Details to be specified . 32
11.7 Details to be reported . 32
12 Method E8: Flexing . 34
12.1 Object . 34
12.2 Sample . 34
– 4 – IEC 60794-1-21:2015 © IEC 2015
12.3 Apparatus . 34
12.4 Procedure . 34
12.5 Requirements . 34
12.6 Details to be specified . 34
13 Method E9: Snatch (deleted) . 35
14 Method E10: Kink . 35
14.1 Object . 35
14.2 Sample . 35
14.3 Apparatus . 35
14.4 Procedure . 36
14.5 Requirements . 36
14.6 Details to be specified . 36
15 Method E11: Bend . 37
15.1 Object . 37
15.2 Sample . 37
15.3 Apparatus . 37
15.4 Procedure . 37
15.4.1 Procedure 1 – Test method E11A (standard test procedure) . 37
15.4.2 Procedure 2 – Test method E11B (alternative test procedure) . 37
15.5 Requirements . 38
15.6 Details to be specified . 38
16 Method E12: Cut-through resistance (deleted) . 39
17 Method E13: Shotgun damage . 39
17.1 Object . 39
17.2 General . 39
17.3 Method E13A: Shotgun test. 39
17.3.1 Sample . 39
17.3.2 Apparatus . 39
17.3.3 Procedure . 39
17.3.4 Requirements . 40
17.3.5 Details to be specified . 40
17.4 Method E13B: Shotgun simulation . 40
17.4.1 Sample . 40
17.4.2 Apparatus . 40
17.4.3 Procedure . 41
17.4.4 Requirements . 41
17.4.5 Details to be specified . 41
17.4.6 Calculation of drop weight and height . 41
18 Method E14: Compound flow (drip) . 45
18.1 Object . 45
18.2 Sample . 45
18.3 Apparatus . 45
18.4 Procedure . 46
18.5 Requirements . 46
18.6 Details to be specified . 46
19 Method E15: Bleeding and evaporation. 47
19.1 Object . 47
19.2 Sample . 47
19.3 Apparatus . 47
19.4 Procedure . 47
19.5 Requirements . 48
19.6 Details to be specified . 48
20 Method E16: [Title unknown] (deleted) . 48
21 Method E17: Bending stiffness . 48
21.1 Object . 48
21.2 General . 48
21.3 Method E17A: Three-point bend . 49
21.3.1 Sample . 49
21.3.2 Apparatus . 49
21.3.3 Procedure . 49
21.3.4 Requirements . 50
21.3.5 Details to be specified . 50
21.4 Method E17B: cantilever bend . 50
21.4.1 Sample . 50
21.4.2 Apparatus . 50
21.4.3 Procedure . 50
21.4.4 Requirements . 51
21.4.5 Details to be specified . 51
21.5 Method E17C: Buckling bend . 51
21.5.1 Sample . 51
21.5.2 Apparatus . 51
21.5.3 Procedure . 51
21.5.4 Requirements . 51
21.5.5 Details to be specified . 52
22 Method E18A: Bending under tension . 53
22.1 Object . 53
22.2 Sample . 53
22.3 Apparatus . 53
22.4 Procedure . 54
22.5 Requirements . 54
22.6 Details to be specified . 54
23 Method E18B: Sheave test (primarily for OPGW and OPAC) . 56
23.1 Object . 56
23.2 Sample . 56
23.3 Apparatus . 57
23.4 Procedure . 57
23.5 Requirements . 58
23.6 Details to be specified . 58
24 Method E19: Aeolian vibration . 59
24.1 Object . 59
24.2 Sample . 59
24.3 Apparatus . 59
24.4 Procedure . 60
24.5 Requirements . 61
24.6 Details to be specified . 61
25 Method E20: Cable coiling performance . 62
– 6 – IEC 60794-1-21:2015 © IEC 2015
25.1 Object . 62
25.2 Sample . 62
25.3 Apparatus . 62
25.4 Procedure . 62
25.5 Requirements . 63
25.6 Details to be specified . 63
26 Method E21: Sheath pull-off force for optical fibre cable for use in patch cords . 63
26.1 Object . 63
26.2 General . 63
26.3 Sample . 63
26.4 Apparatus . 63
26.4.1 General . 63
26.4.2 Tensile test rig . 63
26.4.3 Recording equipment . 64
26.4.4 Stripping tools . 64
26.4.5 Pulling . 64
26.4.6 Cable anchor . 64
26.5 Procedure . 64
26.6 Requirements . 64
26.7 Details to be specified . 64
27 Method E22: Buffered fibre movement under compression in optical fibre cables
for use in patch cords . 66
27.1 Object . 66
27.2 Sample . 66
27.3 Apparatus . 66
27.4 Procedure . 67
27.5 Requirements . 67
27.6 Details to be specified . 67
28 Method E23: Microduct route verification test . 68
28.1 Object . 68
28.2 General . 68
28.3 Sample . 68
28.4 Apparatus . 68
28.5 Procedure . 69
28.6 Requirements . 69
28.7 Details to be reported . 69
29 Method E24: Installation test for microduct cabling . 69
29.1 Object . 69
29.2 General . 69
29.3 Sample . 69
29.4 Apparatus . 69
29.5 Procedure . 70
29.6 Requirements . 70
29.7 Details to be specified . 70
29.8 Details to be reported . 71
30 Method E25: Rip cord functional test . 71
30.1 Object . 71
30.2 Sample . 72
30.3 Apparatus . 72
30.4 Procedure . 72
30.5 Requirements . 72
30.6 Details to be specified . 72
30.7 Details to be reported . 73
31 Method E26: Galloping . 73
31.1 Object . 73
31.2 Sample . 73
31.3 Apparatus . 73
31.4 Procedure . 74
31.5 Requirements . 74
31.6 Details to be specified . 74
32 Method E27: Indoor simulated installation test . 75
32.1 General . 75
32.2 Object . 75
32.3 Sample . 75
32.4 Apparatus . 76
32.5 Procedure . 76
32.6 Requirements . 76
32.7 Details to be specified . 76
33 Method E28: Cable and fibre mechanical reliability test . 76
33.1 Object . 76
33.2 Sample . 76
33.3 Apparatus . 76
33.4 Procedure . 76
33.5 Requirements . 77
33.6 Detail to be specified . 77
Bibliography . 78
Figure 1 – Tensile performance measuring apparatus . 14
Figure 2 – Example of tensile performance measuring apparatus using transfer devices
and chuck drums . 15
Figure 3 – Typical test set-up for tests E2A and E2B method 1 . 17
Figure 4 – Typical test set-up for test E2B, apparatus 2 . 18
Figure 5 – Apparatus for crush test, Method E3A, details of plate/plate option . 20
Figure 6 – Apparatus for crush test, Method E3B, details of plate/mandrel option . 21
Figure 7 – Impact test . 24
Figure 8 – Repeated bending test for cable/connector assembly . 30
Figure 9 – Cable torsion apparatus . 33
Figure 10 – Cable torsion apparatus with tension applied . 33
Figure 11 – Alternative cable torsion apparatus with tension applied . 33
Figure 12 – Flexing apparatus. 35
Figure 13 – Kink test . 36
Figure 14 – Bend test apparatus . 38
Figure 15 – Method E13B test set-up . 43
Figure 16 – Drop weight incorporating shot support pin . 44
– 8 – IEC 60794-1-21:2015 © IEC 2015
Figure 17 – Alternative drop weight and shot support pin . 44
Figure 18 – Bleeding and evaporation test set-up . 48
Figure 19 – Method E17A – Test set-up . 52
Figure 20 – Example of results of applied force and displacement . 52
Figure 21 – Method E17B – Test set-up . 52
Figure 22 – Method E17C – Test set-up . 53
Figure 23 – Single-bend . 55
Figure 24 – S-bend . 56
Figure 25 – Partial-bend . 59
Figure 26 – Partial-bend, multiple pulley . 59
Figure 27 – Aeolian vibration test . 62
Figure 28 – Schematic of test arrangement . 65
Figure 29 – Example of pulling jig . 65
Figure 30 – Cable sample preparation . 66
Figure 31 – Test set-up for fibre movement under compression . 68
Figure 32 – Schematic representation of test route, with leg-length L . 71
Figure 33 – Cable galloping test . 75
Figure 34 – Indoor simulated installation test . 76
Figure 35 – Mechanical reliability test apparatus . 77
Table 1 – Condition of stripped samples . 27
Table 2 – Typical test gauge length . 31
Table 3 – Test values for cable galloping test schematic . 75
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-21: Generic specification –
Basic optical cable test procedures –
Mechanical test methods
FOREWORD
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IEC 60794-1-21 ®
Edition 1.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 1-21: Generic specification – Basic optical cable test procedures –
Mechanical test methods
Câbles à fibres optiques –
Partie 1-21: Spécification générique – Procédures fondamentales d'essais des
câbles optiques – Méthodes d'essai mécanique
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IEC 60794-1-21 ®
Edition 1.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 1-21: Generic specification – Basic optical cable test procedures –
Mechanical test methods
Câbles à fibres optiques –
Partie 1-21: Spécification générique – Procédures fondamentales d'essais des
câbles optiques – Méthodes d'essai mécanique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-6705-9
– 2 – IEC 60794-1-21:2015 © IEC 2015
CONTENTS
FOREWORD . 9
1 Scope and object . 11
2 Normative references . 11
3 Method E1: Tensile performance . 12
3.1 Object . 12
3.2 Sample length . 12
3.3 Apparatus . 12
3.4 Procedure . 12
3.4.1 General requirements . 12
3.4.2 Procedure . 13
3.5 Requirements . 13
3.6 Details to be specified . 13
3.7 Details to be reported . 14
4 Method E2: Abrasion . 15
4.1 Object . 15
4.2 Sample . 15
4.3 Method E2A: Abrasion resistance of optical fibre cable sheaths . 15
4.3.1 Apparatus . 15
4.3.2 Procedure . 16
4.3.3 Requirements . 16
4.3.4 Details to be specified . 16
4.4 Method E2B: Abrasion resistance of optical fibre cable markings . 16
4.4.1 Apparatus . 16
4.4.2 Procedure . 17
4.4.3 Requirements . 17
4.4.4 Details to be specified . 17
5 Method E3: Crush . 18
5.1 Object . 18
5.2 Sample . 18
5.3 Method E3A: Plate/plate . 18
5.3.1 Apparatus . 18
5.3.2 Procedure . 18
5.4 Method E3B: Mandrel/plate . 19
5.4.1 Apparatus . 19
5.4.2 Procedure . 19
5.5 Requirements . 19
5.6 Details to be specified . 19
6 Method E4: Impact . 21
6.1 Object . 21
6.2 Sample . 21
6.2.1 Sample length . 21
6.2.2 Termination . 21
6.3 Apparatus . 21
6.4 Procedure . 22
6.5 Requirements . 22
6.6 Details to be specified . 22
7 Method E5A: Stripping force stability of cabled optical fibres . 24
7.1 Object . 24
7.2 Sample . 24
7.2.1 Sample length . 24
7.2.2 Sample preparation . 24
7.3 Apparatus . 24
7.4 Procedure . 24
7.5 Requirements . 25
7.6 Details to be specified . 25
8 Method E5B: Strippability of optical fibre ribbons . 25
8.1 Object . 25
8.2 Sample . 25
8.3 Apparatus . 25
8.3.1 General . 25
8.3.2 Stripping tool . 25
8.3.3 Motor and slide (if used) . 26
8.3.4 Positioning and holding equipment . 26
8.3.5 Alcohol wipe . 26
8.4 Procedure . 26
8.5 Requirements . 27
8.6 Details to be specified . 27
9 Method E5C: Strippability of buffered optical fibres . 27
9.1 Object . 27
9.2 Sample . 27
9.3 Apparatus . 27
9.4 Procedure . 28
9.5 Requirements . 28
9.6 Details to be specified . 28
10 Method E6: Repeated bending . 28
10.1 Object . 28
10.2 Sample . 28
10.2.1 Sample length . 28
10.2.2 Termination . 29
10.3 Apparatus . 29
10.4 Procedure . 29
10.5 Requirements . 29
10.6 Details to be specified . 29
11 Method E7: Torsion . 30
11.1 Object . 30
11.2 Sample . 30
11.3 Apparatus . 31
11.4 Procedure . 31
11.5 Requirements . 32
11.6 Details to be specified . 32
11.7 Details to be reported . 32
12 Method E8: Flexing . 34
12.1 Object . 34
12.2 Sample . 34
– 4 – IEC 60794-1-21:2015 © IEC 2015
12.3 Apparatus . 34
12.4 Procedure . 34
12.5 Requirements . 34
12.6 Details to be specified . 34
13 Method E9: Snatch (deleted) . 35
14 Method E10: Kink . 35
14.1 Object . 35
14.2 Sample . 35
14.3 Apparatus . 35
14.4 Procedure . 36
14.5 Requirements . 36
14.6 Details to be specified . 36
15 Method E11: Bend . 37
15.1 Object . 37
15.2 Sample . 37
15.3 Apparatus . 37
15.4 Procedure . 37
15.4.1 Procedure 1 – Test method E11A (standard test procedure) . 37
15.4.2 Procedure 2 – Test method E11B (alternative test procedure) . 37
15.5 Requirements . 38
15.6 Details to be specified . 38
16 Method E12: Cut-through resistance (deleted) . 39
17 Method E13: Shotgun damage . 39
17.1 Object . 39
17.2 General . 39
17.3 Method E13A: Shotgun test. 39
17.3.1 Sample . 39
17.3.2 Apparatus . 39
17.3.3 Procedure . 39
17.3.4 Requirements . 40
17.3.5 Details to be specified . 40
17.4 Method E13B: Shotgun simulation . 40
17.4.1 Sample . 40
17.4.2 Apparatus . 40
17.4.3 Procedure . 41
17.4.4 Requirements . 41
17.4.5 Details to be specified . 41
17.4.6 Calculation of drop weight and height . 41
18 Method E14: Compound flow (drip) . 45
18.1 Object . 45
18.2 Sample . 45
18.3 Apparatus . 45
18.4 Procedure . 46
18.5 Requirements . 46
18.6 Details to be specified . 46
19 Method E15: Bleeding and evaporation. 46
19.1 Object . 46
19.2 Sample . 47
19.3 Apparatus . 47
19.4 Procedure . 47
19.5 Requirements . 47
19.6 Details to be specified . 47
20 Method E16: [Title unknown] (deleted) . 48
21 Method E17: Bending stiffness . 48
21.1 Object . 48
21.2 General . 48
21.3 Method E17A: Three-point bend . 49
21.3.1 Sample . 49
21.3.2 Apparatus . 49
21.3.3 Procedure . 49
21.3.4 Requirements . 50
21.3.5 Details to be specified . 50
21.4 Method E17B: cantilever bend . 50
21.4.1 Sample . 50
21.4.2 Apparatus . 50
21.4.3 Procedure . 50
21.4.4 Requirements . 50
21.4.5 Details to be specified . 51
21.5 Method E17C: Buckling bend . 51
21.5.1 Sample . 51
21.5.2 Apparatus . 51
21.5.3 Procedure . 51
21.5.4 Requirements . 51
21.5.5 Details to be specified . 51
22 Method E18A: Bending under tension . 53
22.1 Object . 53
22.2 Sample . 53
22.3 Apparatus . 53
22.4 Procedure . 54
22.5 Requirements . 54
22.6 Details to be specified . 54
23 Method E18B: Sheave test (primarily for OPGW and OPAC) . 56
23.1 Object . 56
23.2 Sample . 56
23.3 Apparatus . 57
23.4 Procedure . 57
23.5 Requirements . 58
23.6 Details to be specified . 58
24 Method E19: Aeolian vibration . 59
24.1 Object . 59
24.2 Sample . 59
24.3 Apparatus . 59
24.4 Procedure . 60
24.5 Requirements . 61
24.6 Details to be specified . 61
25 Method E20: Cable coiling performance . 62
– 6 – IEC 60794-1-21:2015 © IEC 2015
25.1 Object . 62
25.2 Sample . 62
25.3 Apparatus . 62
25.4 Procedure . 62
25.5 Requirements . 63
25.6 Details to be specified . 63
26 Method E21: Sheath pull-off force for optical fibre cable for use in patch cords . 63
26.1 Object . 63
26.2 General . 63
26.3 Sample . 63
26.4 Apparatus . 63
26.4.1 General . 63
26.4.2 Tensile test rig . 63
26.4.3 Recording equipment . 64
26.4.4 Stripping tools . 64
26.4.5 Pulling . 64
26.4.6 Cable anchor . 64
26.5 Procedure . 64
26.6 Requirements . 64
26.7 Details to be specified . 64
27 Method E22: Buffered fibre movement under compression in optical fibre cables
for use in patch cords . 66
27.1 Object . 66
27.2 Sample . 66
27.3 Apparatus . 66
27.4 Procedure . 67
27.5 Requirements . 67
27.6 Details to be specified . 67
28 Method E23: Microduct route verification test . 68
28.1 Object . 68
28.2 General . 68
28.3 Sample . 68
28.4 Apparatus . 68
28.5 Procedure . 69
28.6 Requirements . 69
28.7 Details to be reported . 69
29 Method E24: Installation test for microduct cabling . 69
29.1 Object . 69
29.2 General . 69
29.3 Sample . 69
29.4 Apparatus . 69
29.5 Procedure . 70
29.6 Requirements . 70
29.7 Details to be specified . 70
29.8 Details to be reported . 71
30 Method E25: Rip cord functional test . 71
30.1 Object . 71
30.2 Sample . 72
30.3 Apparatus . 72
30.4 Procedure . 72
30.5 Requirements . 72
30.6 Details to be specified . 72
30.7 Details to be reported . 73
31 Method E26: Galloping . 73
31.1 Object . 73
31.2 Sample . 73
31.3 Apparatus . 73
31.4 Procedure . 74
31.5 Requirements . 74
31.6 Details to be specified . 74
32 Method E27: Indoor simulated installation test . 75
32.1 General . 75
32.2 Object . 75
32.3 Sample . 75
32.4 Apparatus . 76
32.5 Procedure . 76
32.6 Requirements . 76
32.7 Details to be specified . 76
33 Method E28: Cable and fibre mechanical reliability test . 76
33.1 Object . 76
33.2 Sample . 76
33.3 Apparatus . 76
33.4 Procedure . 76
33.5 Requirements . 77
33.6 Detail to be specified . 77
Bibliography . 78
Figure 1 – Tensile performance measuring apparatus . 14
Figure 2 – Example of tensile performance measuring apparatus using transfer devices
and chuck drums . 15
Figure 3 – Typical test set-up for tests E2A and E2B method 1 . 17
Figure 4 – Typical test set-up for test E2B, apparatus 2 . 18
Figure 5 – Apparatus for crush test, Method E3A, details of plate/plate option . 20
Figure 6 – Apparatus for crush test, Method E3B, details of plate/mandrel option . 21
Figure 7 – Impact test . 24
Figure 8 – Repeated bending test for cable/connector assembly . 30
Figure 9 – Cable torsion apparatus . 33
Figure 10 – Cable torsion apparatus with tension applied . 33
Figure 11 – Alternative cable torsion apparatus with tension applied . 33
Figure 12 – Flexing apparatus. 35
Figure 13 – Kink test . 36
Figure 14 – Bend test apparatus . 38
Figure 15 – Method E13B test set-up . 43
Figure 16 – Drop weight incorporating shot support pin . 44
– 8 – IEC 60794-1-21:2015 © IEC 2015
Figure 17 – Alternative drop weight and shot support pin . 44
Figure 18 – Bleeding and evaporation test set-up . 48
Figure 19 – Method E17A – Test set-up . 52
Figure 20 – Example of results of applied force and displacement . 52
Figure 21 – Method E17B – Test set-up . 52
Figure 22 – Method E17C – Test set-up . 53
Figure 23 – Single-bend . 55
Figure 24 – S-bend . 56
Figure 25 – Partial-bend . 59
Figure 26 – Partial-bend, multiple pulley . 59
Figure 27 – Aeolian vibration test . 62
Figure 28 – Schematic of test arrangement . 65
Figure 29 – Example of pulling jig . 65
Figure 30 – Cable sample preparation . 66
Figure 31 – Test set-up for fibre movement under compression . 68
Figure 32 – Schematic representation of test route, with leg-length L . 71
Figure 33 – Cable galloping test . 75
Figure 34 – Indoor simulated installation test . 76
Figure 35 – Mechanical reliability test apparatus . 77
Table 1 – Condition of stripped samples . 27
Table 2 – Typical test gauge length . 31
Table 3 – Test values for cable galloping test schematic . 75
---
...
IEC 60794-1-21 ®
Edition 1.1 2020-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 1-21: Generic specification – Basic optical cable test procedures –
Mechanical test methods
Câbles à fibres optiques –
Partie 1-21: Spécification générique – Procédures fondamentales d'essais
des câbles optiques – Méthodes d'essai mécanique
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IEC 60794-1-21 ®
Edition 1.1 2020-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 1-21: Generic specification – Basic optical cable test procedures –
Mechanical test methods
Câbles à fibres optiques –
Partie 1-21: Spécification générique – Procédures fondamentales d'essais
des câbles optiques – Méthodes d'essai mécanique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-7947-2
IEC 60794-1-21 ®
Edition 1.1 2020-03
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
Optical fibre cables –
Part 1-21: Generic specification – Basic optical cable test procedures –
Mechanical test methods
Câbles à fibres optiques –
Partie 1-21: Spécification générique – Procédures fondamentales d'essais
des câbles optiques – Méthodes d'essai mécanique
– 2 – IEC 60794-1-21:2015+AMD1:2020 CSV
© IEC 2020
CONTENTS
FOREWORD . 10
INTRODUCTION to Amendment . 12
1 Scope and object . 13
2 Normative references . 13
3 Method E1: Tensile performance . 14
3.1 Object . 14
3.2 Sample length . 14
3.3 Apparatus . 14
3.4 Procedure . 15
3.4.1 General requirements . 15
3.4.2 Procedure . 15
3.5 Requirements . 15
3.6 Details to be specified . 16
3.7 Details to be reported . 16
4 Method E2: Abrasion . 17
4.1 Object . 17
4.2 Sample . 17
4.3 Method E2A: Abrasion resistance of optical fibre cable sheaths . 17
4.3.1 Apparatus . 17
4.3.2 Procedure . 18
4.3.3 Requirements . 18
4.3.4 Details to be specified . 18
4.4 Method E2B: Abrasion resistance of optical fibre cable markings . 18
4.4.1 Apparatus . 18
4.4.2 Procedure . 19
4.4.3 Requirements . 19
4.4.4 Details to be specified . 19
5 Method E3: Crush . 20
5.1 Object . 20
5.2 Sample . 20
5.3 Method E3A: Plate/plate . 20
5.3.1 Apparatus . 20
5.3.2 Procedure . 20
5.4 Method E3B: Mandrel/plate . 21
5.4.1 Apparatus . 21
5.4.2 Procedure . 21
5.5 Requirements . 21
5.6 Details to be specified . 21
6 Method E4: Impact . 23
6.1 Object . 23
6.2 Sample . 23
6.2.1 Sample length . 23
6.2.2 Termination . 23
6.3 Apparatus . 23
6.4 Procedure . 24
6.5 Requirements . 24
© IEC 2020
6.6 Details to be specified . 24
7 Method E5A: Stripping force stability of cabled optical fibres .
8 Method E5B: Strippability of optical fibre ribbons .
9 Method E5C: Strippability of buffered optical fibres . 29
9.1 Object . 29
9.2 Sample . 29
9.3 Apparatus . 29
9.4 Procedure . 30
9.5 Requirements . 30
9.6 Details to be specified . 30
10 Method E6: Repeated bending . 30
10.1 Object . 30
10.2 Sample . 30
10.2.1 Sample length . 30
10.2.2 Termination . 31
10.3 Apparatus . 31
10.4 Procedure . 31
10.5 Requirements . 31
10.6 Details to be specified . 31
11 Method E7: Torsion . 32
11.1 Object . 32
11.2 Sample . 32
11.3 Apparatus . 33
11.4 Procedure . 33
11.5 Requirements . 34
11.6 Details to be specified . 34
11.7 Details to be reported . 34
12 Method E8: Flexing . 36
12.1 Object . 36
12.2 Sample . 36
12.3 Apparatus . 36
12.4 Procedure . 36
12.5 Requirements . 36
12.6 Details to be specified . 36
13 Method E9: Snatch (deleted) . 37
14 Method E10: Kink . 37
14.1 Object . 37
14.2 Sample . 37
14.3 Apparatus . 37
14.4 Procedure . 38
14.5 Requirements . 38
14.6 Details to be specified . 38
15 Method E11: Bend . 39
15.1 Object . 39
15.2 Sample . 39
15.3 Apparatus . 39
15.4 Procedure . 39
15.4.1 Procedure 1 – Test method E11A (standard test procedure) . 39
– 4 – IEC 60794-1-21:2015+AMD1:2020 CSV
© IEC 2020
15.4.2 Procedure 2 – Test method E11B (alternative test procedure) . 39
15.5 Requirements . 40
15.6 Details to be specified . 40
16 Method E12: Cut-through resistance (deleted) . 41
17 Method E13: Shotgun damage . 41
17.1 Object . 41
17.2 General . 41
17.3 Method E13A: Shotgun test. 41
17.3.1 Sample . 41
17.3.2 Apparatus . 41
17.3.3 Procedure . 41
17.3.4 Requirements . 42
17.3.5 Details to be specified . 42
17.4 Method E13B: Shotgun simulation . 42
17.4.1 Sample . 42
17.4.2 Apparatus . 42
17.4.3 Procedure . 43
17.4.4 Requirements . 43
17.4.5 Details to be specified . 43
17.4.6 Calculation of drop weight and height . 43
18 Method E14: Compound flow (drip) .
19 Method E15: Bleeding and evaporation.
20 Method E16: [Title unknown] (deleted) . 50
21 Method E17: Bending stiffness . 50
21.1 Object . 50
21.2 General . 50
21.3 Method E17A: Three-point bend . 51
21.3.1 Sample . 51
21.3.2 Apparatus . 51
21.3.3 Procedure . 51
21.3.4 Requirements . 52
21.3.5 Details to be specified . 52
21.4 Method E17B: cantilever bend . 52
21.4.1 Sample . 52
21.4.2 Apparatus . 52
21.4.3 Procedure . 52
21.4.4 Requirements . 52
21.4.5 Details to be specified . 53
21.5 Method E17C: Buckling bend . 53
21.5.1 Sample . 53
21.5.2 Apparatus . 53
21.5.3 Procedure . 53
21.5.4 Requirements . 53
21.5.5 Details to be specified . 53
22 Method E18A: Bending under tension . 55
22.1 Object . 55
22.2 Sample . 55
22.3 Apparatus . 55
© IEC 2020
22.4 Procedure . 56
22.5 Requirements . 56
22.6 Details to be specified . 56
23 Method E18B: Sheave test (primarily for OPGW and OPAC) . 58
23.1 Object . 58
23.2 Sample . 58
23.3 Apparatus . 59
23.4 Procedure . 59
23.5 Requirements . 60
23.6 Details to be specified . 60
24 Method E19: Aeolian vibration . 61
24.1 Object . 61
24.2 Sample . 61
24.3 Apparatus . 61
24.4 Procedure . 62
24.5 Requirements . 63
24.6 Details to be specified . 63
25 Method E20: Cable coiling performance . 64
25.1 Object . 64
25.2 Sample . 64
25.3 Apparatus . 64
25.4 Procedure . 64
25.5 Requirements . 65
25.6 Details to be specified . 65
26 Method E21: Sheath pull-off force for optical fibre cable for use in patch cords . 65
26.1 Object . 65
26.2 General . 65
26.3 Sample . 65
26.4 Apparatus . 65
26.4.1 General . 65
26.4.2 Tensile test rig . 65
26.4.3 Recording equipment . 66
26.4.4 Stripping tools . 66
26.4.5 Pulling . 66
26.4.6 Cable anchor . 66
26.5 Procedure . 66
26.6 Requirements . 66
26.7 Details to be specified . 66
27 Method E22: Buffered fibre movement under compression in optical fibre cables
for use in patch cords . 68
27.1 Object . 68
27.2 Sample . 68
27.3 Apparatus . 68
27.4 Procedure . 69
27.5 Requirements . 69
27.6 Details to be specified . 69
28 Method E23: Microduct route verification test . 70
28.1 Object . 70
– 6 – IEC 60794-1-21:2015+AMD1:2020 CSV
© IEC 2020
28.2 General . 70
28.3 Sample . 70
28.4 Apparatus . 70
28.5 Procedure . 71
28.6 Requirements . 71
28.7 Details to be reported . 71
29 Method E24: Installation test for microduct cabling . 71
29.1 Object . 71
29.2 General . 71
29.3 Sample . 71
29.4 Apparatus . 71
29.5 Procedure . 72
29.6 Requirements . 72
29.7 Details to be specified . 72
29.8 Details to be reported . 73
30 Method E25: Rip cord functional test . 73
30.1 Object . 73
30.2 Sample . 74
30.3 Apparatus . 74
30.4 Procedure . 74
30.5 Requirements . 74
30.6 Details to be specified . 74
30.7 Details to be reported . 75
31 Method E26: Galloping . 75
31.1 Object . 75
31.2 Sample . 75
31.3 Apparatus . 75
31.4 Procedure . 76
31.5 Requirements . 76
31.6 Details to be specified . 76
32 Method E27: Indoor simulated installation test . 77
32.1 General .
32.1 Object . 77
32.2 Sample . 78
32.3 Apparatus . 78
32.4 Procedure . 80
32.5 Requirements . 80
32.6 Details to be specified . 81
33 Method E28: Cable and fibre mechanical reliability test . 81
33.1 Object . 81
33.2 Sample . 81
33.3 Apparatus . 81
33.4 Procedure . 82
33.5 Requirements . 82
33.6 Detail to be specified . 82
34 Method E29: Straight midspan access to optical elements . 83
34.1 Object . 83
34.2 Apparatus . 83
© IEC 2020
34.3 Sample . 84
34.4 Procedure . 84
34.4.1 General . 84
34.4.2 Procedure 1 . 84
34.4.3 Procedure 2 . 85
34.4.4 Overview . 86
34.5 Requirements . 86
34.6 Details to be specified . 86
35 Method E30: Coefficient of friction between cables . 86
35.1 Object . 86
35.2 Sample . 87
35.3 Apparatus . 87
35.4 Procedure . 88
35.5 Requirement . 89
35.6 Details to be specified . 89
36 Method E31: Microduct inner clearance test: under consideration . 89
37 Method E32: Creep behaviour tension test (for ADSS) . 89
37.1 Object . 89
37.2 Sample . 89
37.3 Apparatus . 90
37.4 Procedure . 90
37.4.1 General procedure requirements . 90
37.4.2 Procedure steps . 91
37.5 Calculations . 92
37.6 Details to be specified . 93
37.7 Details to be reported . 93
37.8 Additional information . 93
38 Method E33: Multiple cable coiling and uncoiling performance . 94
38.1 Object . 94
38.2 Sample . 94
38.3 Apparatus . 94
38.4 Procedure . 94
38.5 Requirements . 95
38.6 Details to be specified . 95
39 Method E34: Coefficient of dynamic friction between cables . 95
39.1 Object . 95
39.2 Sample . 95
39.3 Apparatus . 96
39.4 Procedure . 96
39.5 Details to be specified . 96
Bibliography . 97
Figure 1 – Tensile performance measuring apparatus . 16
Figure 2 – Example of tensile performance measuring apparatus using transfer devices
and chuck drums . 17
Figure 3 – Typical test set-up for tests E2A and E2B method 1 . 19
Figure 4 – Typical test set-up for test E2B, apparatus 2 . 20
Figure 5 – Apparatus for crush test, Method E3A, details of plate/plate option . 22
– 8 – IEC 60794-1-21:2015+AMD1:2020 CSV
© IEC 2020
Figure 6 – Apparatus for crush test, Method E3B, details of plate/mandrel option . 23
Figure 7 – Impact test . 26
Figure 8 – Repeated bending test for cable/connector assembly . 32
Figure 9 – Cable torsion apparatus . 35
Figure 10 – Cable torsion apparatus with tension applied . 35
Figure 11 – Alternative cable torsion apparatus with tension applied . 35
Figure 12 – Flexing apparatus. 37
Figure 13 – Kink test . 38
Figure 14 – Bend test apparatus . 40
Figure 15 – Method E13B test set-up . 45
Figure 16 – Drop weight incorporating shot support pin . 46
Figure 17 – Alternative drop weight and shot support pin . 46
Figure 18 – Bleeding and evaporation test set-up .
Figure 19 – Method E17A – Test set-up . 54
Figure 20 – Example of results of applied force and displacement .
...
IEC 60794-1-21:2015 is a standard that applies to optical fiber cables used with telecommunication equipment. It also includes cables that have both optical fibers and electrical conductors. The standard aims to define test procedures for mechanical performance requirements. It replaces the mechanical tests part of a previous edition and is a technical revision. This standard should be read along with IEC 60794-1-1:2011.
제목: IEC 60794-1-21:2015 - 광섬유 케이블 - 파트 1-21: 일반 사양 - 기본 광케이블 시험 방법 - 기계 시험 방법 내용: IEC 60794-1-21:2015는 통신 장비와 유사한 기술을 사용하는 광섬유 케이블 및 광섬유와 전기 도체를 결합한 케이블에 적용됩니다. 이 표준의 목적은 기계 요구 성능에 대한 균일한 요구 사항을 확립하기 위해 사용되는 시험 절차를 정의하는 것입니다. 이 표준에서는 "광케이블"이 광섬유 유닛, 마이크로 덕트 광섬유 유닛 등을 포함할 수 있습니다. 일반 요구 사항과 정의는 IEC 60794-1-20에 제공되며, 모든 유형의 시험 방법에 대한 완전한 참조 가이드는 IEC 60794-1-2에 있습니다. IEC 60794-1-21의 이번 초판은 2003년에 발행된 IEC 60794-1-2의 기계 시험 부분을 철회하고 대체합니다. 이는 기술적 개정을 구성합니다. 키워드: 통신 장비용 광섬유 케이블, 시험 절차 이 게시물은 IEC 60794-1-1:2011과 함께 읽어야 합니다.
IEC 60794-1-21:2015 is a standard that applies to optical fiber cables used in telecommunication equipment. It defines test procedures to establish uniform requirements for mechanical performance. The standard covers optical cables, as well as optical fiber units and microduct fiber units. This edition of the standard replaces the mechanical tests section of a previous edition published in 2003. It should be read along with IEC 60794-1-1:2011.
글 제목: IEC 60794-1-21:2015 - 광섬유 케이블 - 제 1-21부: 일반 사양 - 기본 광 케이블 시험 절차 - 기계 시험 방법 글 내용: IEC 60794-1-21:2015는 통신 장비와 유사한 기술을 사용하는 광섬유 케이블 및 광섬유와 전기 도체의 조합을 가진 케이블에 적용됩니다. 이 표준의 목적은 기계적 요구사항 성능을 제시하기 위해 사용되는 시험 절차를 정의하는 것입니다. 이 표준에서 '광섬유 케이블'이라는 용어는 광섬유 유니트, 마이크로 덕트 광섬유 유니트 등도 포함됩니다. 일반적인 요구 사항과 정의는 IEC 60794-1-20에 제시되며, IEC 60794-1-2의 모든 유형의 시험 방법에 대한 완전한 참조 안내서도 제공됩니다. 이 IEC 60794-1-21의 첫 번째 판은 2003년에 발행된 IEC 60794-1-2의 기계 시험 부분을 취소하고 대체합니다. 이는 기술적 개정입니다. 키워드: 통신 장비와 함께 사용하는 광섬유 케이블, 시험 절차 이 게시물은 IEC 60794-1-1:2011과 함께 읽어야 합니다.
記事のタイトル：IEC 60794-1-21：2015 - 光ファイバケーブル - 第1-21部：一般仕様 - 基本的な光ケーブル試験手順 - 機械試験方法 記事の内容：IEC 60794-1-21：2015は、通信機器や同様の技術を使用する光ファイバケーブルおよび光ファイバと電気導体の組み合わせを持つケーブルに適用されます。この標準の目的は、機械的性能要件について均一な要件を確立するために使用される試験手順を定義することです。この標準では、「光ケーブル」には光ファイバユニット、マイクロダクトファイバユニットなども含まれることがあります。一般的な要件と定義はIEC 60794-1-20に記載されており、すべてのタイプの試験方法の完全な参考ガイドはIEC 60794-1-2にあります。IEC 60794-1-21のこの初版は、2003年に発行されたIEC 60794-1-2の機械試験の部分を取り消し、置き換えるものです。これは技術的な改訂を構成しています。キーワード：通信機器用の光ファイバケーブル、試験手順 この記事はIEC 60794-1-1：2011と併せて読む必要があります。
記事のタイトル：IEC 60794-1-21:2015 光ファイバケーブル 第1-21部：一般仕様 基本光ケーブル試験手順 機械的試験方法 記事の内容：IEC 60794-1-21:2015は、通信機器と同様の技術を使用する光ファイバケーブルおよび光ファイバと電気導体の組み合わせを持つケーブルに適用されます。この規格の目的は、機械的要求性能の均一な要件を確立するために使用される試験手順を定義することです。この規格では、「光ケーブル」という用語は光ファイバユニット、マイクロダクトファイバユニットなども含まれます。一般的な要件と定義はIEC 60794-1-20に記載されており、IEC 60794-1-2には全てのタイプの試験方法の完全な参照ガイドも提供されています。IEC 60794-1-21の第1版は、2003年に発行されたIEC 60794-1-2の機械的試験部分を廃止し、置き換えるものです。これは技術的な改訂であります。キーワード：通信機器と使用する光ファイバケーブル、試験手順 この記事は、IEC 60794-1-1:2011と一緒に読む必要があります。
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