IEC 60794-3-70:2021

IEC 60794-3-70 ®
Edition 2.0 2021-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 3-70: Outdoor cables – Family specification for outdoor optical fibre cables
for rapid/multiple deployment
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IEC 60794-3-70 ®
Edition 2.0 2021-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 3-70: Outdoor cables – Family specification for outdoor optical fibre cables

for rapid/multiple deployment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.01; 33.180.10 ISBN 978-2-8322-9689-9

– 2 – IEC 60794-3-70:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General requirements . 6
5 Specification for outdoor optical fibre cables for rapid/multiple deployment . 7
5.1 Construction . 7
5.1.1 General . 7
5.1.2 Rapid/multiple deployment optical fibre cables. 7
5.2 Optical fibres . 7
5.3 Secondary coating . 7
5.4 Outer sheath . 8
5.5 Mechanical and environmental tests . 8
6 Testing of rapid/multiple deployment optical fibre cables . 8
6.1 General . 8
6.2 Applicable tests . 8
6.3 Tensile performance . 9
6.4 Abrasion . 9
6.5 Crush . 9
6.6 Impact. 10
6.7 Ribbon strippability . 10
6.8 Repeated bending . 10
6.9 Torsion . 10
6.10 Flexing . 11
6.11 Kink . 11
6.12 Bend . 11
6.13 Bending under tension . 11
6.14 Multiple cable coiling and uncoiling performance. 12
6.15 Temperature cycling . 12
6.16 Water penetration . 12
6.17 Ageing . 13
6.18 UV resistance . 13
6.19 External freezing . 13
6.20 Fibre ribbon separability . 13
6.21 Tube kinking . 13
Annex A (normative) Blank detail specification and minimum requirements . 14
Bibliography . 15

Table 1 – Tests applicable for mechanical and environmental performance of a
rapid/multiple deployment optical fibre cable . 8
Table A.1 – Cable description . 14

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 3-70: Outdoor cables – Family specification for outdoor optical
fibre cables for rapid/multiple deployment

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
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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 60794-3-70:2016. 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 60794-3-70:2021 RLV © IEC 2021
IEC 60794-3-70 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is an International Standard.
This second edition cancels and replaces the first edition published in 2016. It constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) incorporation of the new classification system for optical fibre categories, sub-categories in
IEC 60793-2-10;
b) incorporation of the new classification system for optical fibre categories, sub-categories
and models in IEC 60793-2-50;
c) updating of cabled fibre performance categories in alignment with ISO/IEC 11801-1;
d) updating of bibliographical references.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86A/2086/FDIS 86A/2091/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.
This International Standard is to be used in conjunction with IEC 60794-1-1, IEC 60794-1-2 and
IEC 60794-3.
A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables,
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.
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.

OPTICAL FIBRE CABLES –
Part 3-70: Outdoor cables – Family specification for outdoor optical
fibre cables for rapid/multiple deployment

1 Scope
This part of IEC 60794 is a family specification that covers outdoor optical fibre cables intended
for rugged terrestrial rapid/multiple deployment. These cables, with enhanced mechanical,
environmental and ingress performance may can be used wherever a rapid or multiple
deployment is relevant (e.g. mobile broadcast units, emergency rescue services, tactical
ground-forces, outdoor motion-robotics, mining machinery, temporary repair cables for
damaged links, etc.).
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 60793-2-10:20112019, Optical fibres – Part 2-10: Product specifications – Sectional
specification for category A1 multimode fibres
IEC 60793-2-50:20122019, Optical fibres – Part 2-50: Product specifications – Sectional
specification for class B single-mode fibres
IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification – General
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Cross reference table
for Basic optical cable test procedures – General guidance
IEC 60794-1-21:2015, Optical fibre cables – Part 1-21: Generic specification – Basic optical
cable test procedures – Mechanical tests methods
IEC 60794-1-21:2015/AMD1:2020
IEC 60794-1-22:2017, Optical fibre cables – Part 1-22: Generic specification – Basic optical
cable test procedures – Environmental tests methods
IEC 60794-1-23:2019, Optical fibre cables – Part 1-23: Generic specification – Basic optical
cable test procedures – Cable element test methods
IEC 60794-1-215, Optical fibre cables – Part 1-215: Generic specification – Basic optical cable
test procedures – Environmental test methods – Cable external freezing test, Method F15
IEC 60794-3, Optical fibre cables – Part 3: Outdoor cables – Sectional specification
ISO 4892-2, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc
lamps
– 6 – IEC 60794-3-70:2021 RLV © IEC 2021
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
4 General requirements
The cable shall comply with the sectional specification, IEC 60794-3, and meet the
requirements which are defined in it.
The optical fibre contained in cables covered by this document shall comply with one of the
following standards, and meet the normative requirements defined within them as applicable:
• IEC 60793-2-50:2012, Annex A (Single-mode fibre category B1.1);
• IEC 60793-2-50:2012, Annex C (Single-mode fibre category B1.3);
• IEC 60793-2-50:2012, Annex G (Single-mode fibre sub-categories B6_a1 and B6_a2);
• IEC 60793-2-10:2011, Annex A (Multimode fibre sub-category A1a, 50 µm core
diameter);
• IEC 60793-2-10:2011, Annex B (Multimode fibre sub-category A1b, 62,5 µm core
diameter).
To enable compatibility with ISO/IEC 11801and ISO/IEC 24702, optical performance level
requirements are presented in terms of the performance classification codes as follows:
• OS1 Single-mode fibre, B1.1, B1.3, B6_a1 or B6_a2
• OS2 Single-mode fibre, B1.3, B6_a1 or B6_a2
• OM1 Multimode fibre, A1a or A1b
• OM2 Multimode fibre, A1a or A1b
• OM3 Multimode fibre, A1a.2
• OM4 Multimode fibre, A1a.3
• IEC 60793-2-10:2019, Annex A (multimode fibre sub-categories A1-OM2, A1-OM3, A1-
OM4, and A1-OM5, fibre models a and b);
• IEC 60793-2-10:2019, Annex B (multimode fibre sub-category A1-OM1);
• IEC 60793-2-50:2019, Annex A (single-mode fibre sub-category B-652.B and B-652.D);
• IEC 60793-2-50:2019, Annex F (single-mode fibre category B-657);
To enable compatibility with ISO/IEC 11801-1, optical performance level requirements are
presented in terms of the performance classification codes as follows:
• OS1a: single-mode fibre, sub-categories B-652.D, B-657.A1, B-657.A2, B-657.B2 and
B-657.B3;
• OS2: single-mode fibre, sub-categories B-652.D, B-657.A1, B-657.A2, B-657.B2 and
B-657.B3;
• OM3: multimode fibre, models A1-OM3a and A1-OM3b;
• OM4: multimode fibre, models A1-OM4a and A1-OM4b;

• OM5: multimode fibre, models A1-OM5a and A1-OM5b.
NOTE These codes are informative from the perspective of the requirements defined in this document.
5 Specification for outdoor optical fibre cables for rapid/multiple deployment
5.1 Construction
5.1.1 General
In addition to the construction requirements of IEC 60794-3, where applicable, the following
considerations apply to outdoor optical fibre cables for rapid/multiple deployment.
Rapid/multiple deployment optical fibre cables are designed to be used in un-protected outdoor
terrestrial environments thereby requiring enhanced mechanical, environmental and ingress
performance.
A blank detail specification for outdoor optical fibre cables for rapid/multiple deployment is
provided in Annex A.
5.1.2 Rapid/multiple deployment optical fibre cables
Rapid/multiple deployment optical fibre cables are suitable for use by manual or mechanically
assisted deployment. They are differentiated from other outdoor optical fibre cables due to:
• repeated deployment/installation;
• unprotected working environment;
• often stored in on relatively small diameter drums;
• uncontrolled or non-regulated cable route.
All the above, as well as additional factors, require these cables to have enhanced mechanical
(i.e. tensile, crush, bend radius, torsion, abrasion, kink, memory) environmental (i.e.
temperature, UV resistance, cold-bend) and ingress (i.e. fuel, solvent and oil resistance,
waterblocking) performance over the cable's lifetime. These are to shall be incorporated into
the cable's design.
5.2 Optical fibres
For the purposes of this document, supported optical fibres are those detailed in Clause 4.
There shall be no fibre splice in a delivered length unless otherwise agreed by customer and
supplier.
It shall be possible to identify each individual fibre throughout the length of the cable.
Transmission performance of the cabled optical fibres shall be in accordance with
IEC 60794-1-1.
5.3 Secondary coating
Although the different recognized secondary coatings detailed in IEC 60794-3 (tight buffer,
tube, ribbon, slotted core, etc.) are supported by this document, the type of secondary coating,
materials and dimensions shall be as required by the cable detail specification.
NOTE Both laboratory testing as well as field use have demonstrated the tight buffer to be most optimized to meet
all the relevant performance test requirements detailed in Clause 6.

– 8 – IEC 60794-3-70:2021 RLV © IEC 2021
5.4 Outer sheath
The cable shall have a seamless sheath made of a UV-stabilised weather-resistant polymeric
compound, unless otherwise agreed between the customer and supplier.
The sheath thickness and cable overall diameter and its variations shall take into account the
operating conditions and shall be determined by agreement between the customer and supplier.
5.5 Mechanical and environmental tests
Based on the expected operating conditions over the life of the product, including the
mechanical loads exerted on the product during deployment and operation, Clause 6 specifies
product performance for rapid/multiple deployment optical fibre cables. Unless otherwise
specified, the installation temperature range shall be: –40 ºC to +70 ºC.
6 Testing of rapid/multiple deployment optical fibre cables
6.1 General
Some of the tests detailed in Table 1 below may not be applicable to certain cable designs and
intended applications. For further guidance on the applicability of test methods and frequency
of testing, see IEC 60794-1-1.
Tests on single-mode fibre cables are typically carried out at 1 550 nm. Multimode fibre cables
are typically tested at 1 300 nm. Measurements at other wavelengths or range of wavelengths
can be agreed upon between the customer and supplier.
6.2 Applicable tests
See Table 1.
Table 1 – Tests applicable for mechanical and environmental performance
of a rapid/multiple deployment optical fibre cable
Characteristic Family Test method Remark
requirement
Tensile performance 6.3 IEC 60794-1-21
method E1
Abrasion 6.4 IEC 60794-1-21
method E2A
Crush 6.5 IEC 60794-1-21
method E3
Impact 6.6 IEC 60794-1-21
method E4
Ribbon stripping 6.7 IEC 60794-1-21 If ribbons are used
Method E5B
IEC 60794-1-23
method G10B
Repeated bending 6.8 IEC 60794-1-21
method E6
Torsion 6.9 IEC 60794-1-21
method E7
Flexing 6.10 IEC 60794-1-21
method E8
Kink 6.11 IEC 60794-1-21
method E10
Bend 6.12 IEC 60794-1-21
method E11A
Characteristic Family Test method Remark
requirement
Bending under tension 6.13 IEC 60794-1-21
method E18A
Multiple cable coiling and uncoiling 6.14 IEC 60794-1-21
performance Method E33
Temperature cycling 6.15 IEC 60794-1-22
Method F1
Water penetration 6.16 IEC 60794-1-22
Method F5B/F5C
Ageing 6.17 IEC 60794-1-22
Method F9
UV resistance 6.18 IEC 60794-1-22
Method F14
External freezing 6.19 IEC 60794-1-22
215 Method F15A
Separability of individual fibres from 6.20 IEC 60794-1-23 If ribbons are used
ribbon Method G5
Tube kinking 6.21 IEC 60794-1-23 If loose tubes are used
Method G7
IEC 60811-404 may be
Fuel solvent resistance
applicable
6.3 Tensile performance
a) Family requirements
For some of the parameters specified, the objective is a level of strain that will not
compromise fibre mechanical reliability. For 1 % proof-tested fibres, the fibre strain under
) shall not exceed 20 % of this fibre proof strain (equal to absolute
long term tensile load (T
L
0,2 % strain) and there shall be no change in attenuation during the test. Under short term
tensile load (T ), the fibre strain shall not exceed 60 % of the fibre proof strain and the
M
attenuation change during test shall be measured and recorded. Other criteria may be
agreed between the customer and the supplier. For fibres proof tested at higher levels, the
safe long-term load will not scale linearly with proof strain, so a lower percentage of the
proof strain is applicable. For greater than 1 % up to 2 % proof-tested fibres, fibre strain at
T shall be limited to 17 % of the proof-test strain (equal to absolute 0,34 % strain for 2 %
L
proof tested fibres).
b) Test conditions
Method: IEC 60794-1-21, method E1
Tensile short-term load on cable: 2 700 N or 1 × the weight of 1,0 km length of cable in
N, the larger smaller of the two.
NOTE Other tensile loads can be agreed between customer and supplier.
6.4 Abrasion
a) Family requirements
There shall be no perforation of the sheath after performing 100 cycles. Other criteria may
be agreed between customer and supplier.
b) Test conditions
Method: IEC 60794-1-21, method E2A
Applied force: 7 N
Diameter of needle: 0,5 1,0 mm
6.5 Crush
a) Family requirements
– 10 – IEC 60794-3-70:2021 RLV © IEC 2021
After removal of the short-term load, there shall be no change in attenuation. Under visual
examination, there shall be no damage to the sheath or to the cable elements. The imprint
of the plate or mandrel on the cable is not considered mechanical damage.
b) Test conditions
Method: IEC 60794-1-21, method E3A
Short-term load (plate/plate): 8 000 N
Duration of load: 1 min
NOTE Other compression loads can be agreed between customer and supplier.
6.6 Impact
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath or
to the cable elements. The imprint of the striking surface on the sheath is not considered
mechanical damage.
b) Test conditions
Method: IEC 60794-1-21, Method E4
Number of impacts: One in 3 different places spaced not less than
500 mm apart
Striking surface curvature radius: 300 mm
Impact energy: 22 J
NOTE Other impact energies greater than 10 J can be agreed between customer and supplier.
6.7 Ribbon strippability
a) Family requirements
At least 25 mm of the ribbon matrix and the fibres’ protective coatings shall be removable
with commercially available stripping tools with no fibre breakage. Any remaining coating
residue shall be readily removable using isopropyl alcohol wipes.
b) Test conditions
Method: IEC 60794-1-2123, Method E5BG10B
6.8 Repeated bending
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath and
to the cable elements.
There shall be no change in attenuation after the test.
b) Test conditions
Method: IEC 60794-1-21, method E6
Bending diameter: 10 × d
Load: Adequate to ensure uniform contact with the mandrel
Number of cycles: 10 000 1 000
6.9 Torsion
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath or
to the cable elements.
There shall be no change in attenuation after the test.
b) Test conditions
Method: IEC 60794-1-21, method E7
Length under test: 125 × d
Number of cycles: 1 000 10
NOTE Other lengths can be agreed between customer and supplier.
6.10 Flexing
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath or
to the cable elements.
There shall be no change in attenuation after the test.
b) Test conditions
Method: IEC 60794-1-21, method E8
Number of cycles: 10 000 1 000
Diameter of pulleys A and B: 20 × d
Carriage speed: 1,0 m/s
Mass of weights: Adequate enough to ensure uniform contact with
pulleys
NOTE The following test details can be agreed between supplier and customer: mass of weights, acceleration
and deceleration of the carriage, traverse length of the carriage and minimal distance of pulleys A and B to the
nearest fixed pulley.
6.11 Kink
a) Family requirements
No kink shall occur at diameters greater than the specified minimum.
b) Test conditions
Method: IEC 60794-1-21, method E10
Minimum diameter: 10 × d
6.12 Bend
a) Family requirements
There shall be no change in attenuation after the test.
The change in attenuation during the test shall be ≤ 0,2 dB for single-mode fibre and ≤ 0,4
dB for multimode fibre.
b) Test conditions
Method: IEC 60794-1-21, method E11A
Temperature Ambient
Diameter of mandrel: 10 × d
Number of turns/helix: 4
Number of cycles: 3
NOTE Other temperatures can be agreed between customer and supplier.
6.13 Bending under tension
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath nor
to the cable elements.
The permanent increase in attenuation after the test shall be ≤ 0,2 dB for single-mode fibre
and ≤ 0,4 dB for multimode fibre.
b) Test conditions
Method: IEC 60794-1-21, method E18A, procedure 1
Diameter of mandrel: 10 × d
Tension: 500 N
– 12 – IEC 60794-3-70:2021 RLV © IEC 2021
Number of moving cycles: 10
6.14 Multiple cable coiling and uncoiling performance
a) Family requirements
The change in attenuation during the test shall be ≤ 0,2 dB for single-mode fibre and
≤ 0,4 dB for multimode fibre.
There shall be no change in attenuation after the test when measured at room temperature.
There shall be no physical damage to the cable after the test.
b) Test conditions
Method: IEC 60794-1-21, method E33
Sample length: Finished cable, length of at least 100 m coiled on test
drum
Diameter of test drum core 10 × d
Number of coils per layer: minimum 20
Number of cycles: 5
6.15 Temperature cycling
a) Family requirements
Attenuation measurements shall be taken during the last cycle.
For T to T , the change in the attenuation coefficient shall be:
A1 B1
• ≤ 0,2 dB/km for single-mode fibre and shall be reversible to measurement uncertainty
when measured in the 1 550 nm region;
• ≤ 0,4 dB/km for multimode fibre and shall be reversible to measurement uncertainty
when measured in the 1 300 nm region.
For T to T , the change in attenuation coefficient shall be:
A2 B2
• ≤ 0,3 dB/km for single-mode fibre and shall be reversible to measurement uncertainty
when measured in the 1 550 nm region;
• ≤ 0,5 dB/km for multimode fibre and shall be reversible to measurement uncertainty
when measured in the 1 300 nm region.
b) Test conditions
Method: IEC 60794-1-22, method F1
Sample length under test: finished cable, length of at least 1 000 m
High temperature, T : +70 °C to +85 °C, depending on customer
B2
requirements
High temperature, T : +60 °C to +70 °C, depending on customer
B1
requirements
Low temperature, T : −40 °C
A1
Low temperature, T : T to −60 °C, depending on customer requirements
A2 A1
Number of cycles: 2
NOTE Other temperature values corresponding to specific climate conditions can be agreed between supplier
and customer. If, due to intended application length, a shorter cable sample is agreed between supplier and
customer, this length will be sufficient to ensure accurate, repeatable test results as per the dynamic range and
resolution of the optical test equipment.
6.16 Water penetration
a) Family requirements
The cable shall not propagate water longitudinally according to requirements of
IEC 60794-1-22, method F5B or method F5C, as applicable.

b) Test conditions
Method: IEC 60794-1-22, method F5B or method F5C as
applicable
6.17 Ageing
a) Family requirements
No change in optical transmittance after the test.
b) Test conditions
Method: IEC 60794-1-22, method F9
6.18 UV resistance
a) Family requirements
After exposure, the average tensile and elongation of the test specimens from the outer
sheath shall be a minimum of 80 % of the original value.
b) Test conditions
Method: IEC 60794-1-22, method F14 and ISO 4892-2
6.19 External freezing
Method: IEC 60794-1-22, Method F15 IEC 60794-1-215,
method F15A
Sample length: ≥ 50 m
NOTE It is assumed that a cable intended for outdoor use meets the external freezing requirements above;
however, supplier and customer can agree to forego this test if deemed irrelevant to the intended application.
6.20 Fibre ribbon separability
a) Family requirements
Maximum tear force: 4,4 N
b) Test conditions
Method: IEC 60794-1-23, method G5
6.21 Tube kinking
a) Family requirements
During the test, no kinking of the sample shall be visible.
b) Test conditions
Method: IEC 60794-1-23, method G7
L: 60 mm
L : 350 mm
L : 175 mm
Cycles: 10
NOTE Alternatively, L2 can be set as 100 mm and the moving length L can be extended beyond 60 mm in order
to achieve the equivalent loop diameter.

– 14 – IEC 60794-3-70:2021 RLV © IEC 2021
Annex A
(normative)
Blank detail specification and minimum requirements
See Table A.1 for the cable description.
Table A.1 – Cable description
(1) Prepared (2)
by Document
no:
Issue:
Date:
(3) Available (4) Generic specifications: IEC 60794-1-1 and IEC 60794-1-2
from: Sectional specification: IEC 60794-3
Family specification: IEC 60794-3-70
(5) Additional references:
(6) Rapid/multiple deployment optical fibre cable description:
(7) Rapid/multiple deployment optical fibre cable
construction:
Optical fibre type (as per IEC 60793-2) Additional remarks
Total fibre count
Secondary coating construction
Secondary coating material
Secondary coating dimensions
Strength member material
Cable core construction
Sheath material
Sheath dimensions
Additional armouring (optional)
– Non-metallic armouring
– Metallic armouring
Additional outer sheath (optional)
Marking identification
– Customer requirement
– Identification of manufacturer
(8) Application information:
Maximum outer diameter (d) mm
Rated maximum tensile load N
Minimum bending radius for no-load bending mm or n × d
Minimum bending radius for rated-load bending mm or n × d
Temperature range:
– Transport and storage ºC
– Installation ºC
– Operation ºC
Length marking on outer sheath
– Typical m
– Accuracy
–0 % to +1 %
Bibliography
IEC 60304, Standard colours for insulation for low-frequency cables and wires
IEC 60793-1-40, Optical fibres – Part 1-40: Attenuation measurement methods and test
procedures – Attenuation
IEC 60811-404, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 404: Miscellaneous tests – Mineral oil immersion tests for sheaths
IEC TR 63194, Guidance on colour coding of optical fibre cables
ISO/IEC 11801-1, Information technology − Generic cabling for customer premises – Part 1:
General requirements
ISO/IEC 24702, Information technology – Generic cabling – Industrial premises

___________
IEC 60794-3-70 ®
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 3-70: Outdoor cables – Family specification for outdoor optical fibre cables
for rapid/multiple deployment
Câbles à fibres optiques –
Partie 3-70: Câbles extérieurs – Spécification de famille pour câbles à fibres
optiques extérieurs pour déploiement rapide/multiple

– 2 – IEC 60794-3-70:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
5 Specification for outdoor optical fibre cables for rapid/multiple deployment . 6
5.1 Construction . 6
5.1.1 General . 6
5.1.2 Rapid/multiple deployment optical fibre cables. 6
5.2 Optical fibres . 7
5.3 Secondary coating . 7
5.4 Outer sheath . 7
5.5 Mechanical and environmental tests . 7
6 Testing of rapid/multiple deployment optical fibre cables . 7
6.1 General . 7
6.2 Applicable tests . 7
6.3 Tensile performance . 9
6.4 Abrasion . 9
6.5 Crush . 9
6.6 Impact. 9
6.7 Ribbon strippability . 10
6.8 Repeated bending . 10
6.9 Torsion . 10
6.10 Flexing . 10
6.11 Kink . 11
6.12 Bend . 11
6.13 Bending under tension . 11
6.14 Multiple cable coiling and uncoiling performance. 11
6.15 Temperature cycling . 12
6.16 Water penetration . 12
6.17 Ageing . 12
6.18 UV resistance . 12
6.19 External freezing . 13
6.20 Fibre ribbon separability . 13
6.21 Tube kinking . 13
Annex A (normative) Blank detail specification and minimum requirements . 14
Bibliography . 15

Table 1 – Tests applicable for mechanical and environmental performance of a
rapid/multiple deployment optical fibre cable . 8
Table A.1 – Cable description . 14

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 3-70: Outdoor cables – Family specification for outdoor optical
fibre cables for rapid/multiple deployment

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
...

IEC 60794-3-70 ®
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 3-70: Outdoor cables – Family specification for outdoor optical fibre cables
for rapid/multiple deployment
Câbles à fibres optiques –
Partie 3-70: Câbles extérieurs – Spécification de famille pour câbles à fibres
optiques extérieurs pour déploiement rapide/multiple

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IEC 60794-3-70 ®
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 3-70: Outdoor cables – Family specification for outdoor optical fibre cables

for rapid/multiple deployment
Câbles à fibres optiques –
Partie 3-70: Câbles extérieurs – Spécification de famille pour câbles à fibres

optiques extérieurs pour déploiement rapide/multiple

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01; 33.180.10 ISBN 978-2-8322-1016-9

– 2 – IEC 60794-3-70:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
5 Specification for outdoor optical fibre cables for rapid/multiple deployment . 6
5.1 Construction . 6
5.1.1 General . 6
5.1.2 Rapid/multiple deployment optical fibre cables. 6
5.2 Optical fibres . 7
5.3 Secondary coating . 7
5.4 Outer sheath . 7
5.5 Mechanical and environmental tests . 7
6 Testing of rapid/multiple deployment optical fibre cables . 7
6.1 General . 7
6.2 Applicable tests . 7
6.3 Tensile performance . 9
6.4 Abrasion . 9
6.5 Crush . 9
6.6 Impact. 9
6.7 Ribbon strippability . 10
6.8 Repeated bending . 10
6.9 Torsion . 10
6.10 Flexing . 10
6.11 Kink . 11
6.12 Bend . 11
6.13 Bending under tension . 11
6.14 Multiple cable coiling and uncoiling performance. 11
6.15 Temperature cycling . 12
6.16 Water penetration . 12
6.17 Ageing . 12
6.18 UV resistance . 12
6.19 External freezing . 13
6.20 Fibre ribbon separability . 13
6.21 Tube kinking . 13
Annex A (normative) Blank detail specification and minimum requirements . 14
Bibliography . 15

Table 1 – Tests applicable for mechanical and environmental performance of a
rapid/multiple deployment optical fibre cable . 8
Table A.1 – Cable description . 14

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 3-70: Outdoor cables – Family specification for outdoor optical
fibre cables for rapid/multiple deployment

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 60794-3-70 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is an International Standard.
This second edition cancels and replaces the first edition published in 2016. It constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) incorporation of the new classification system for optical fibre categories, sub-categories in
IEC 60793-2-10;
b) incorporation of the new classification system for optical fibre categories, sub-categories
and models in IEC 60793-2-50;
c) updating of cabled fibre performance categories in alignment with ISO/IEC 11801-1;
d) updating of bibliographical references.

– 4 – IEC 60794-3-70:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
86A/2086/FDIS 86A/2091/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.
This International Standard is to be used in conjunction with IEC 60794-1-1, IEC 60794-1-2 and
IEC 60794-3.
A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables,
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.
OPTICAL FIBRE CABLES –
Part 3-70: Outdoor cables – Family specification for outdoor optical
fibre cables for rapid/multiple deployment

1 Scope
This part of IEC 60794 is a family specification that covers outdoor optical fibre cables intended
for rugged terrestrial rapid/multiple deployment. These cables, with enhanced mechanical,
environmental and ingress performance can be used wherever a rapid or multiple deployment
is relevant (e.g. mobile broadcast units, emergency rescue services, tactical ground-forces,
outdoor motion-robotics, mining machinery, temporary repair cables for damaged links, etc.).
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 60793-2-10:2019, Optical fibres – Part 2-10: Product specifications – Sectional
specification for category A1 multimode fibres
IEC 60793-2-50:2019, Optical fibres – Part 2-50: Product specifications – Sectional
specification for class B single-mode fibres
IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification – General
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test
procedures – General guidance
IEC 60794-1-21:2015, Optical fibre cables – Part 1-21: Generic specification – Basic optical
cable test procedures – Mechanical tests methods
IEC 60794-1-21:2015/AMD1:2020
IEC 60794-1-22:2017, Optical fibre cables – Part 1-22: Generic specification – Basic optical
cable test procedures – Environmental tests methods
IEC 60794-1-23:2019, Optical fibre cables – Part 1-23: Generic specification – Basic optical
cable test procedures – Cable element test methods
IEC 60794-1-215, Optical fibre cables – Part 1-215: Generic specification – Basic optical cable
test procedures – Environmental test methods – Cable external freezing test, Method F15
IEC 60794-3, Optical fibre cables – Part 3: Outdoor cables – Sectional specification
ISO 4892-2, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc
lamps
3 Terms and definitions
No terms and definitions are listed in this document.

– 6 – IEC 60794-3-70:2021 © IEC 2021
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
4 General requirements
The cable shall comply with the sectional specification, IEC 60794-3, and meet the
requirements which are defined in it.
The optical fibre contained in cables covered by this document shall comply with one of the
following standards, and meet the normative requirements defined within them as applicable:
• IEC 60793-2-10:2019, Annex A (multimode fibre sub-categories A1-OM2, A1-OM3, A1-
OM4, and A1-OM5, fibre models a and b);
• IEC 60793-2-10:2019, Annex B (multimode fibre sub-category A1-OM1);
• IEC 60793-2-50:2019, Annex A (single-mode fibre sub-category B-652.B and B-652.D);
• IEC 60793-2-50:2019, Annex F (single-mode fibre category B-657);
To enable compatibility with ISO/IEC 11801-1, optical performance level requirements are
presented in terms of the performance classification codes as follows:
• OS1a: single-mode fibre, sub-categories B-652.D, B-657.A1, B-657.A2, B-657.B2 and
B-657.B3;
• OS2: single-mode fibre, sub-categories B-652.D, B-657.A1, B-657.A2, B-657.B2 and
B-657.B3;
• OM3: multimode fibre, models A1-OM3a and A1-OM3b;
• OM4: multimode fibre, models A1-OM4a and A1-OM4b;
• OM5: multimode fibre, models A1-OM5a and A1-OM5b.
NOTE These codes are informative from the perspective of the requirements defined in this document.
5 Specification for outdoor optical fibre cables for rapid/multiple deployment
5.1 Construction
5.1.1 General
In addition to the construction requirements of IEC 60794-3, where applicable, the following
considerations apply to outdoor optical fibre cables for rapid/multiple deployment.
Rapid/multiple deployment optical fibre cables are designed to be used in un-protected outdoor
terrestrial environments thereby requiring enhanced mechanical, environmental and ingress
performance.
A blank detail specification for outdoor optical fibre cables for rapid/multiple deployment is
provided in Annex A.
5.1.2 Rapid/multiple deployment optical fibre cables
Rapid/multiple deployment optical fibre cables are suitable for use by manual or mechanically
assisted deployment. They are differentiated from other outdoor optical fibre cables due to:
• repeated deployment/installation;
• unprotected working environment;

• often stored on relatively small diameter drums;
• uncontrolled or non-regulated cable route.
All the above, as well as additional factors, require these cables to have enhanced mechanical
(i.e. tensile, crush, bend radius, torsion, abrasion, kink, memory) environmental (i.e.
temperature, UV resistance, cold-bend) and ingress (i.e. fuel, solvent and oil resistance,
waterblocking) performance over the cable's lifetime. These shall be incorporated into the
cable's design.
5.2 Optical fibres
For the purposes of this document, supported optical fibres are those detailed in Clause 4.
There shall be no fibre splice in a delivered length unless otherwise agreed by customer and
supplier.
It shall be possible to identify each individual fibre throughout the length of the cable.
Transmission performance of the cabled optical fibres shall be in accordance with
IEC 60794-1-1.
5.3 Secondary coating
Although the different recognized secondary coatings detailed in IEC 60794-3 (tight buffer,
tube, ribbon, slotted core, etc.) are supported by this document, the type of secondary coating,
materials and dimensions shall be as required by the cable detail specification.
NOTE Both laboratory testing as well as field use have demonstrated the tight buffer to be most optimized to meet
all the relevant performance test requirements detailed in Clause 6.
5.4 Outer sheath
The cable shall have a seamless sheath made of a UV-stabilised weather-resistant polymeric
compound, unless otherwise agreed between the customer and supplier.
The sheath thickness and cable overall diameter and its variations shall take into account the
operating conditions and shall be determined by agreement between the customer and supplier.
5.5 Mechanical and environmental tests
Based on the expected operating conditions over the life of the product, including the
mechanical loads exerted on the product during deployment and operation, Clause 6 specifies
product performance for rapid/multiple deployment optical fibre cables. Unless otherwise
specified, the installation temperature range shall be: –40 ºC to +70 ºC.
6 Testing of rapid/multiple deployment optical fibre cables
6.1 General
Some of the tests detailed in Table 1 below may not be applicable to certain cable designs and
intended applications. For further guidance on the applicability of test methods and frequency
of testing, see IEC 60794-1-1.
Tests on single-mode fibre cables are typically carried out at 1 550 nm. Multimode fibre cables
are typically tested at 1 300 nm. Measurements at other wavelengths or range of wavelengths
can be agreed upon between the customer and supplier.
6.2 Applicable tests
See Table 1.
– 8 – IEC 60794-3-70:2021 © IEC 2021
Table 1 – Tests applicable for mechanical and environmental performance
of a rapid/multiple deployment optical fibre cable
Characteristic Family Test method Remark
requirement
Tensile performance 6.3 IEC 60794-1-21
method E1
Abrasion 6.4 IEC 60794-1-21
method E2A
Crush 6.5 IEC 60794-1-21
method E3
Impact 6.6 IEC 60794-1-21
method E4
Ribbon stripping 6.7 IEC 60794-1-23 If ribbons are used
method G10B
Repeated bending 6.8 IEC 60794-1-21
method E6
Torsion 6.9 IEC 60794-1-21
method E7
Flexing 6.10 IEC 60794-1-21
method E8
Kink 6.11 IEC 60794-1-21
method E10
IEC 60794-1-21
Bend 6.12
method E11A
Bending under tension 6.13 IEC 60794-1-21
method E18A
Multiple cable coiling and uncoiling 6.14 IEC 60794-1-21
performance Method E33
Temperature cycling 6.15 IEC 60794-1-22
Method F1
Water penetration 6.16 IEC 60794-1-22
Method F5B/F5C
Ageing 6.17 IEC 60794-1-22
Method F9
UV resistance 6.18 IEC 60794-1-22
Method F14
External freezing 6.19 IEC 60794-1-215
Method F15A
Separability of individual fibres from 6.20 IEC 60794-1-23 If ribbons are used
ribbon Method G5
Tube kinking 6.21 IEC 60794-1-23 If loose tubes are used
Method G7
IEC 60811-404 may be
Fuel solvent resistance
applicable
6.3 Tensile performance
a) Family requirements
For some of the parameters specified, the objective is a level of strain that will not
compromise fibre mechanical reliability. For 1 % proof-tested fibres, the fibre strain under
long term tensile load (T ) shall not exceed 20 % of this fibre proof strain (equal to absolute
L
0,2 % strain) and there shall be no change in attenuation during the test. Under short term
), the fibre strain shall not exceed 60 % of the fibre proof strain and the
tensile load (T
M
attenuation change during test shall be measured and recorded. Other criteria may be
agreed between the customer and the supplier. For fibres proof tested at higher levels, the
safe long-term load will not scale linearly with proof strain, so a lower percentage of the
proof strain is applicable. For greater than 1 % up to 2 % proof-tested fibres, fibre strain at
shall be limited to 17 % of the proof-test strain (equal to absolute 0,34 % strain for 2 %
T
L
proof tested fibres).
b) Test conditions
Method: IEC 60794-1-21, method E1
Tensile short-term load on cable: 2 700 N or 1 × the weight of 1,0 km length of cable in
N, the smaller of the two.
NOTE Other tensile loads can be agreed between customer and supplier.
6.4 Abrasion
a) Family requirements
There shall be no perforation of the sheath after performing 100 cycles. Other criteria may
be agreed between customer and supplier.
b) Test conditions
Method: IEC 60794-1-21, method E2A
Applied force: 7 N
Diameter of needle: 1,0 mm
6.5 Crush
a) Family requirements
After removal of the short-term load, there shall be no change in attenuation. Under visual
examination, there shall be no damage to the sheath or to the cable elements. The imprint
of the plate or mandrel on the cable is not considered mechanical damage.
b) Test conditions
Method: IEC 60794-1-21, method E3A
Short-term load (plate/plate): 8 000 N
Duration of load: 1 min
NOTE Other compression loads can be agreed between customer and supplier.
6.6 Impact
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath or
to the cable elements. The imprint of the striking surface on the sheath is not considered
mechanical damage.
b) Test conditions
Method: IEC 60794-1-21, Method E4
Number of impacts: One in 3 different places spaced not less than
500 mm apart
Striking surface curvature radius: 300 mm
Impact energy: 22 J
– 10 – IEC 60794-3-70:2021 © IEC 2021
NOTE Other impact energies can be agreed between customer and supplier.
6.7 Ribbon strippability
a) Family requirements
At least 25 mm of the ribbon matrix and the fibres’ protective coatings shall be removable
with commercially available stripping tools with no fibre breakage. Any remaining coating
residue shall be readily removable using isopropyl alcohol wipes.
b) Test conditions
Method: IEC 60794-1-23, Method G10B
6.8 Repeated bending
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath and
to the cable elements.
There shall be no change in attenuation after the test.
b) Test conditions
Method: IEC 60794-1-21, method E6
Bending diameter: 10 × d
Load: Adequate to ensure uniform contact with the mandrel
Number of cycles: 1 000
6.9 Torsion
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath or
to the cable elements.
There shall be no change in attenuation after the test.
b) Test conditions
Method: IEC 60794-1-21, method E7
Length under test: 125 × d
Number of cycles: 10
NOTE Other lengths can be agreed between customer and supplier.
6.10 Flexing
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath or
to the cable elements.
There shall be no change in attenuation after the test.
b) Test conditions
Method: IEC 60794-1-21, method E8
Number of cycles: 1 000
Diameter of pulleys A and B: 20 × d
Carriage speed: 1,0 m/s
Mass of weights: Adequate enough to ensure uniform contact with
pulleys
NOTE The following test details can be agreed between supplier and customer: mass of weights, acceleration
and deceleration of the carriage, traverse length of the carriage and minimal distance of pulleys A and B to the
nearest fixed pulley.
6.11 Kink
a) Family requirements
No kink shall occur at diameters greater than the specified minimum.
b) Test conditions
Method: IEC 60794-1-21, method E10
Minimum diameter: 10 × d
6.12 Bend
a) Family requirements
There shall be no change in attenuation after the test.
The change in attenuation during the test shall be δ 0,2 dB for single-mode fibre and
δ 0,4 dB for multimode fibre.
b) Test conditions
Method: IEC 60794-1-21, method E11A
Temperature Ambient
Diameter of mandrel: 10 × d
Number of turns/helix: 4
Number of cycles: 3
NOTE Other temperatures can be agreed between customer and supplier.
6.13 Bending under tension
a) Family requirements
Under visual examination without magnification, there shall be no damage to the sheath nor
to the cable elements.
The permanent increase in attenuation after the test shall be ≤ 0,2 dB for single-mode fibre
and ≤ 0,4 dB for multimode fibre.
b) Test conditions
Method: IEC 60794-1-21, method E18A, procedure 1
Diameter of mandrel: 10 × d
Tension: 500 N
Number of moving cycles: 10
6.14 Multiple cable coiling and uncoiling performance
a) Family requirements
The change in attenuation during the test shall be ≤ 0,2 dB for single-mode fibre and
≤ 0,4 dB for multimode fibre.
There shall be no change in attenuation after the test when measured at room temperature.
There shall be no physical damage to the cable after the test.
b) Test conditions
Method: IEC 60794-1-21, method E33
Sample length: Finished cable, length of at least 100 m coiled on test
drum
Diameter of test drum core 10 × d
Number of coils per layer: minimum 20
Number of cycles: 5
– 12 – IEC 60794-3-70:2021 © IEC 2021
6.15 Temperature cycling
a) Family requirements
Attenuation measurements shall be taken during the last cycle.
For T to T , the change in the attenuation coefficient shall be:
A1 B1
• ≤ 0,2 dB/km for single-mode fibre and shall be reversible to measurement uncertainty
when measured in the 1 550 nm region;
• ≤ 0,4 dB/km for multimode fibre and shall be reversible to measurement uncertainty
when measured in the 1 300 nm region.
For T to T , the change in attenuation coefficient shall be:
A2 B2
• ≤ 0,3 dB/km for single-mode fibre and shall be reversible to measurement uncertainty
when measured in the 1 550 nm region;
• ≤ 0,5 dB/km for multimode fibre and shall be reversible to measurement uncertainty
when measured in the 1 300 nm region.
b) Test conditions
Method: IEC 60794-1-22, method F1
Sample length under test: finished cable, length of at least 1 000 m
High temperature, T : +70 °C to +85 °C, depending on customer
B2
requirements
High temperature, T : +60 °C to +70 °C, depending on customer
B1
requirements
Low temperature, T : −40 °C
A1
Low temperature, T : T to −60 °C, depending on customer requirements
A2 A1
Number of cycles: 2
NOTE Other temperature values corresponding to specific climate conditions can be agreed between supplier
and customer. If, due to intended application length, a shorter cable sample is agreed between supplier and
customer, this length will be sufficient to ensure accurate, repeatable test results as per the dynamic range and
resolution of the optical test equipment.
6.16 Water penetration
a) Family requirements
The cable shall not propagate water longitudinally according to requirements of
IEC 60794-1-22, method F5B or method F5C, as applicable.
b) Test conditions
Method: IEC 60794-1-22, method F5B or method F5C as
applicable
6.17 Ageing
a) Family requirements
No change in optical transmittance after the test.
b) Test conditions
Method: IEC 60794-1-22, method F9
6.18 UV resistance
a) Family requirements
After exposure, the average tensile and elongation of the test specimens from the outer
sheath shall be a minimum of 80 % of the original value.
b) Test conditions
Method: IEC 60794-1-22, method F14 and ISO 4892-2

6.19 External freezing
Method: IEC 60794-1-215, method F15A
Sample length: ≥ 50 m
NOTE It is assumed that a cable intended for outdoor use meets the external freezing requirements above;
however, supplier and customer can agree to forego this test if deemed irrelevant to the intended application.
6.20 Fibre ribbon separability
a) Family requirements
Maximum tear force: 4,4 N
b) Test conditions
Method: IEC 60794-1-23, method G5
6.21 Tube kinking
a) Family requirements
During the test, no kinking of the sample shall be visible.
b) Test conditions
Method: IEC 60794-1-23, method G7
L: 60 mm
L : 350 mm
L : 175 mm
Cycles: 10
NOTE Alternatively, L2 can be set as 100 mm and the moving length L can be extended beyond 60 mm in order
to achieve the equivalent loop diameter.

– 14 – IEC 60794-3-70:2021 © IEC 2021
Annex A
(normative)
Blank detail specification and minimum requirements
See Table A.1 for the cable description.
Table A.1 – Cable description
(1) Prepared (2)
by Document
no:
Issue:
Date:
(3) Available (4) Generic specifications: IEC 60794-1-1 and IEC 60794-1-2
from: Sectional specification: IEC 60794-3
Family specification: IEC 60794-3-70
(5) Additional references:
(6) Rapid/multiple deployment optical fibre cable description:
(7) Rapid/multiple deployment optical fibre cable
construction:
Optical fibre type (as per IEC 60793-2) Additional remarks
Total fibre count
Secondary coating construction
Secondary coating material
Secondary coating dimensions
Strength member material
Cable core construction
Sheath material
Sheath dimensions
Additional armouring (optional)
– Non-metallic armouring
– Metallic armouring
Additional outer sheath (optional)
Marking identification
– Customer requirement
– Identification of manufacturer
(8) Application information:
Maximum outer diameter (d) mm
Rated maximum tensile load N
Minimum bending radius for no-load bending mm or n × d
Minimum bending radius for rated-load bending mm or n × d
Temperature range:
– Transport and storage ºC
– Installation ºC
– Operation ºC
Length marking on outer sheath
– Typical m
– Accuracy
–0 % to +1 %
Bibliography
IEC 60793-1-40, Optical fibres – Part 1-40: Attenuation measurement methods
IEC 60811-404, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 404: Miscellaneous tests – Mineral oil immersion tests for sheaths
IEC TR 63194, Guidance on colour coding of optical fibre cables
ISO/IEC 11801-1, Information technology − Generic cabling for customer premises – Part 1:
General requirements
___________
– 16 – IEC 60794-3-70:2021 © IEC 2021
SOMMAIRE
AVANT-PROPOS . 17
1 Domaine d’application . 19
2 Références normatives . 19
3 Termes et définitions . 20
4 Exigences générales . 20
5 Spécification pour câbles à fibres optiques extérieurs pour déploiement
rapide/multiple . 20
5.1 Construction . 20
5.1.1 Généralités . 20
5.1.2 Câbles à fibres optiques pour déploiement rapide/multiple. 21
5.2 Fibres optiques . 21
5.3 Revêtement secondaire . 21
5.4 Gaine extérieure . 21
5.5 Essais mécaniques et d’environnement. 21
6 Essais de câbles à fibres optiques pour déploiement rapide/multiples . 22
6.1 Généralités . 22
6.2 Essais applicables . 22
6.3 Performance en traction . 23
6.4 Abrasion . 23
6.5 Ecrasement. 23
6.6 Chocs . 24
6.7 Dénudabilité du ruban . 24
6.8 Courbures répétées . 24
6.9 Torsion . 24
6.10 Flexion . 24
6.11 Pliure . 25
6.12 Courbure. 25
6.13 Courbure sous traction . 25
6.14 Performances d’enroulement et de déroulement multiples d’un câble . 26
6.15 Cycles de température . 26
6.16 Pénétration d’eau . 26
6.17 Vieillissement. 27
6.18 Résistance aux UV . 27
6.19 Gel en extérieur . 27
6.20 Séparabilité du ruban en fibres . 27
6.21 Déformation du tube . 27
Annexe A (normative) Spécification particulière-cadre et exigences minimales . 28
Bibliographie . 29

Tableau 1 – Essais applicables aux performances mécaniques et environnementales
d’un câble à fibres optiques pour déploiement rapide/multiple . 22
Tableau A.1 – Description du câble . 28

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
CÂBLES À FIBRES OPTIQUES –
Partie 3-70: Câbles extérieurs – Spécification de famille pour câbles
à fibres optiques extérieurs pour déploiement rapide/multiple

AVANT-PROPOS
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