Optical fibre cables - Part 1-310: Generic specification - Basic optical cable test procedures - Cable element test methods - Strippability, method G10

IEC 60794-1-310:2022 describes test procedures to be used in establishing uniform requirements of optical fibre cable elements for the mechanical property – strippability. This document 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. Throughout the document, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. This document partially cancels and replaces IEC 60794-1-23:2019. This edition includes the following significant technical change with respect to IEC 60794-1-23:2019: inclusion of semi-tight buffer fibres in method G10C.

Câbles à fibres optiques - Partie 1-310: Spécification générique - Procédures fondamentales d’essai des câbles optiques - Méthodes d’essai des éléments de câbles - Dénudabilité, méthode G10

IEC 60794-1-310: 2022 décrit les procédures d’essai à utiliser pour l’établissement d’exigences uniformes pour la propriété mécanique de dénudabilité des éléments de câbles à fibres optiques. Le présent document 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.Dans le présent document, l'expression "câble optique" peut également englober les unités de fibres optiques, les unités de fibres pour microconduit, etc. Le présent document annule et remplace partiellement l’IEC 60794-1-23:2019. Cette édition inclut la modification technique majeure suivante par rapport à IEC 60794-1-23:2019: ajout des fibres à structure semi-serrée dans la méthode G10C.

General Information

Status
Published
Publication Date
25-Apr-2022
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
26-Apr-2022
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IEC 60794-1-310
Edition 1.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 1-310: Generic specification – Basic optical cable test procedures – Cable
element test methods – Strippability, method G10
Câbles à fibres optiques –
Partie 1-310: Spécification générique – Procédures fondamentales d’essai des
câbles optiques – Méthodes d’essai des éléments de câbles – Dénudabilité,
méthode G10
IEC 60794-1-310:2022-04(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60794-1-310
Edition 1.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 1-310: Generic specification – Basic optical cable test procedures – Cable
element test methods – Strippability, method G10
Câbles à fibres optiques –
Partie 1-310: Spécification générique – Procédures fondamentales d’essai des
câbles optiques – Méthodes d’essai des éléments de câbles – Dénudabilité,
méthode G10
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-1104-6

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

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

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60794-1-310:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 General requirements ...................................................................................................... 6

5 Method G10A: Stripping force stability of cabled optical fibres ......................................... 7

5.1 Object ..................................................................................................................... 7

5.2 Sample ................................................................................................................... 7

5.2.1 Sample length ................................................................................................. 7

5.2.2 Sample preparation ......................................................................................... 7

5.3 Apparatus ............................................................................................................... 7

5.4 Procedure ............................................................................................................... 7

5.5 Requirements ......................................................................................................... 7

5.6 Details to be specified ............................................................................................. 7

6 Method G10B: Strippability of optical fibre ribbons ........................................................... 8

6.1 Object ..................................................................................................................... 8

6.2 Sample ................................................................................................................... 8

6.3 Apparatus ............................................................................................................... 8

6.3.1 General ........................................................................................................... 8

6.3.2 Stripping tool ................................................................................................... 8

6.3.3 Motor and slide (if used) .................................................................................. 8

6.4 Positioning and holding equipment .......................................................................... 9

6.5 Alcohol wipe ........................................................................................................... 9

6.6 Procedure ............................................................................................................... 9

6.7 Requirements ......................................................................................................... 9

6.8 Details to be specified ........................................................................................... 10

7 Method G10C: Strippability of buffered optical fibres ..................................................... 10

7.1 Object ................................................................................................................... 10

7.2 Sample ................................................................................................................. 10

7.3 Apparatus ............................................................................................................. 10

7.4 Procedure ............................................................................................................. 10

7.5 Requirements ....................................................................................................... 11

7.6 Details to be specified ........................................................................................... 11

Bibliography .......................................................................................................................... 12

Table 1 – Condition of stripped samples ................................................................................. 9

---------------------- Page: 4 ----------------------
IEC 60794-1-310:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-310: Generic specification – Basic optical cable test procedures –
Cable element test methods – Strippability, method G10
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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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 60794-1-310 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical

committee 86: Fibre optics. It is an International Standard.
This document partially cancels and replaces IEC 60794-1-23:2019.

This edition includes the following significant technical change with respect to IEC 60794-1-

23:2019: inclusion of semi-tight buffer fibres in method G10C.
The text of this International Standard is based on the following documents:
Draft Report on voting
86A/2136/CDV 86A2186/RVC

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
---------------------- Page: 5 ----------------------
– 4 – IEC 60794-1-310:2022 © IEC 2022
The language used for the development of this International Standard is English.

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/publications.

A list of all parts 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.
---------------------- Page: 6 ----------------------
IEC 60794-1-310:2022 © IEC 2022 – 5 –
INTRODUCTION
This document contains method G10A, method G10B and method G10C of IEC 60794-1-

23:2019, which will be withdrawn. The system for optical fibre test methods have been

restructured and renumbered. The optical cable element test methods contained in IEC 60794-

1-23:2019 will now be individually numbered in the IEC 60794-1-3xx series. Each test method

is now considered to be an individual document rather than part of a multi-test method

compendium. Full cross-reference details are given in IEC 60794-1-2.
---------------------- Page: 7 ----------------------
– 6 – IEC 60794-1-310:2022 © IEC 2022
OPTICAL FIBRE CABLES –
Part 1-310: Generic specification – Basic optical cable test procedures –
Cable element test methods – Strippability, method G10
1 Scope

This part of IEC 60794 describes test procedures to be used in establishing uniform

requirements of optical fibre cable elements for the mechanical property – strippability.

This document 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.

Throughout the document, the wording "optical cable" can also include optical fibre units,

microduct fibre units, 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 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test

procedures – General guidance

IEC 60793-1-32:2018, Optical fibres – Part 1-32: Measurement methods and test procedures –

Coating strippability

IEC 60794-1-22:2017, Optical fibre cables – Part 1-22: Generic specification – Basic optical

cable test procedures – Environmental tests methods
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

IEC 60794-1-2 is the reference guide to test methods of all types. It shall be considered for

general requirements and definitions.
---------------------- Page: 8 ----------------------
IEC 60794-1-310:2022 © IEC 2022 – 7 –
5 Method G10A: Stripping force stability of cabled optical fibres
5.1 Object

This test determines the stability of the stripping force of the coating of cabled optical fibres by

measuring the change in fibre strippability after exposure to specified environmental conditions.

NOTE This method is known as method G10A in IEC 60794-1-23:2019.
5.2 Sample
5.2.1 Sample length

The length of the cable or fibre sample shall be sufficient to carry out the specified test.

5.2.2 Sample preparation

The cable from which the fibres shall be extracted is preconditioned, as specified in the relevant

detail specification, prior to withdrawal of the fibres.

The test shall be carried out on a fibre/fibres taken from the cable sample which is further

divided into two lengths (minimum 2 m). One length is for testing and the other, the reference

fibre, shall be used to compare the results.

Sufficient samples shall be provided to allow tests to be carried out on 10 test pieces of fibre,

conditioned as specified in the relevant detail specification, and compared with test results for

fibres taken from the reference cable length.

After withdrawal, any filling compound adhering to the fibres shall be carefully removed (e.g. by

wiping with a soft tissue).
5.3 Apparatus

The apparatus consists of conditioning equipment (if necessary) and a fibre strippability

apparatus (according to the strippability test method of IEC 60793-1-32:2018).
5.4 Procedure

The optical fibre strippability shall be measured on the environmentally conditioned samples

using the strippability method of IEC 60793-1-32:2018, after the recovery time and

reconditioning as given in the relevant detail specification. The same method shall be used to

measure the strippability of fibre samples taken from the reference cable length, and the change

in stripping force shall be determined from a comparison of the results.
Alternatively, samples shall be taken from cable aged according to method F9 of
IEC 60794-1-22:2017, if samples from an aged cable are specified.
5.5 Requirements

The change in stripping force shall meet the requirements specified in the relevant detail

specification.
5.6 Details to be specified
The relevant detail specification shall include the following:
a) cable preconditioning;
b) fibre conditioning;
c) recovery time and reconditioning;
d) permissible change in stripping force.
---------------------- Page: 9 ----------------------
– 8 – IEC 60794-1-310:2022 © IEC 2022
6 Method G10B: Strippability of optical fibre ribbons
6.1 Object

The purpose of this test is to evaluate the strippability of optical fibre ribbons and the effect of

stripping on the sample when checked for fibre cleanliness and possible fibre breakage.

NOTE This method is known as method G10B in IEC 60794-1-23:2019.
6.2 Sample

The test sample shall be representative of the type/design of ribbon under evaluation.

Samples may be taken sequentially along a length of ribbon, but sections of the ribbon

previously in the grips of the stripping tool shall be excluded.

The length of the sample shall be sufficient to allow the matrix and fibre coatings to be removed

over a minimum length of 25 mm with a maximum of ten and a minimum of five strips per

sample.

Sample environmental conditioning requirements shall be agreed between customer and

supplier.
6.3 Apparatus
6.3.1 General
A ribbon stripping apparatus and conditioning equipment (if necessary).
6.3.2 Stripping tool

The results of the test are strongly dependent upon the design of the stripping tool used, and

the following tool design guidelines shall be taken into account.

– The mechanical stripping tool shall provide a heated surface that operates at a temperature

in the range +70 °C to +140 °C. The heated surface, once set to the specified temperature,

shall maintain that temperature within ±5 °C during the stripping operation. The heated

surface(s) shall be located behind the stripping blades and positioned to heat the part of the

ribbon in which the coating shall be removed.

• Heat-up time and dwell time for the tool may be important and the tool manufacturer’s

recommendations shall be followed.

• Follow the ribbon manufacturer’s recommendations for setting the tool temperature.

– The stripping tool or loading fixture shall maintain a constant pressure sufficient for proper

stripping. Ensure that the tool does not begin to open during stripping.

– The size of the gap between the blades shall be known. This dimension and its tolerance

shall ensure that the blades cut through the matrix material and fibre coatings without

damaging the fibre cladding.

– The condition of the blades can greatly influence the stripping action. The edges of the

blades shall be inspected for notches and burrs under normal vision before and after use.

– Replace the blades when they become damaged or blunt or whenever wear is sufficient to

affect the results.
6.3.3 Motor and slide (if used)

The motor and slide shall allow repeatable motion with low vibration and fast acceleration. They

shall be capable of imparting constant motion, without jerking, to the test ribbon or stripping

tool.
---------------------- Page: 10 ----------------------
IEC 60794-1-310:2022 © IEC 2022 – 9 –
If a manual tool is used, the stripping action shall follow these same criteria.
6.4 Positioning and holding equipment

The test sample shall be firmly held in place so that no slippage occurs (a capstan is

recommended). The sample ribbon fibres shall be in line (vertically, horizontally and

rotationally) with the plane of the stripping motion.
6.5 Alcohol wipe

A non-abrasive cloth or paper material saturated with a suitable alcohol solution shall be used

to wipe the fibres after stripping.
6.6 Procedure

Unless otherwise specified, the condition for testing shall be in accordance with controlled

ambient conditions. The strip length shall be ≥ 25 mm and the strip velocity shall be as given in

the relevant detail specification (between 100 mm/min and 500 mm/min).
Turn on the test apparatus and allow the tool temperature to stabilize.

Ensure that the area around both blades of the stripping tool is free from debris from any

previous use and that the blades are clean.

Strip the ribbon following the manufacturer’s recommendation on heating dwell time prior to

stripping.

After stripping, wipe the stripped fibres with the alcohol wipe and inspect them visually at a

magnification of at least 2X.

Assess the cleanliness and integrity of the fibres after stripping as indicated in Table 1.

Table 1 – Condition of stripped samples
Rating Condition of stripped sample
1 Coating and matrix materials leave no residue after one or two alcohol wipes.

2 Coating and matrix material crumbles or breaks up leaving a heavy residue upon stripping, and

multiple alcohol wipes are required to remove residue on the fibres. Fibres are capable of being wiped

clean without a second strip.

3 Incomplete strip, some fibre coating remains intact. Multiple strips and alcohol wipes are required to

remove all visible residue from the fibres.
4 Failed strip:
– one or more fibres break;
– fail to strip within the required speed.

Carry out the number of strips as given in the relevant detail specification and calculate the

average cleanliness rating for each sample, rounded to the nearest whole number.
6.7 Requirements

The average cleanliness rating shall comply with the values given in the relevant detail

specification.
No fibres shall break.
---------------------- Page: 11 ----------------------
– 10 – IEC 60794-1-310:2022 © IEC 2022
6.8 Details to be specified
The relevant detail specification shall include the following:
a) type of stripping apparatus;
b) average dwell time;
c) stripping tool temperature;
d) stripping velocity;
e) strip length;
f) sample environmental conditioning;
g) required average cleanliness rating;
h) number of fibres in the ribbon.
7 Method G10C: Strippability of buffered optical fibres
7.1 Object

This test determines the stability of the stripping force of buffered optical fibres.

Tests to evaluate three types of buffers are included: tight buffer fibres, where the buffer is in

intimate contact with the fibre’s outer coating, and semi-tight and loose buffer, where the buffer

is designed to be removable while leaving the fibre coating intact.
NOTE This method is known as method G10C in IEC 60794-1-23:2019.
7.2 Sample

Samples of buffered fibre to be tested shall comply with the requirements of method G10A.

7.3 Apparatus
The apparatus shall comply with the requirements of method G10A.

The fibre stripping apparatus shall have sufficient clearance to accommodate the buffer to be

stripped.

In the case of semi-tight and loose buffer, the cutting surfaces of the fibre stripping apparatus

shall be sized such that the coating of the fibre beneath the buffer is not cut or damaged by the

stripping operation.
7.4 Procedure
Follow the procedure of method G10A.

If comparison of unaged and aged samples is specified, perform the procedure as follows,

following the intent of method G10A.
– Set aside unaged control samples for later test.

– Age the buffered fibre in the cable or in a representative environment in the lab (in filling

compound, or the like, as appropriate) as specified in the relevant detail specification. Cable

ageing shall be carried out according to method F9 of IEC 60794-1-22:2017.
– After ageing, remove the samples from the cable or other for strip testing.

– Perform the stripping of the control samples and the aged samples per method G10A.

---------------------- Page: 12 ----------------------
IEC 60794-1-310:2022 © IEC 2022 – 11 –
7.5 Requirements

The buffered fibres shall meet the strippability or strippability stability requirements of the

relevant detail specification.
7.6 Details to be specified
The relevant detail specification shall include the following:
a) buffer fibre preconditioning, if any;
b) buffered fibre conditioning;
c) recovery time and reconditioning;
d) permissible change in strip force or maximum/minimum strip force.
---------------------- Page: 13 ----------------------
– 12 – IEC 60794-1-310:2022 © IEC 2022
Bibliography

IEC 60794-1-23:2019, Optical fibre cables – Part 1-23: Generic specification – Basic optical

cable test procedures – Cable element test methods
___________
---------------------- Page: 14 ----------------------
– 14 – IEC 60794-1-310:2022 © IEC 2022
SOMMAIRE

AVANT-PROPOS .................................................................................................................. 15

INTRODUCTION ................................................................................................................... 17

1 Domaine d’application ................................................................................................... 18

2 Références normatives .................................................................................................. 18

3 Termes et définitions ..........................................................

...

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