SIST EN 60684-2:2011
Flexible insulating sleeving - Part 2: Methods of test
Flexible insulating sleeving - Part 2: Methods of test
IEC 60684-2:2011 gives methods of test for flexible insulating sleeving, including heat-shrinkable sleeving, intended primarily for insulating electrical conductors and connections of electrical apparatus, although they may be used for other purposes. The tests specified are designed to control the quality of the sleeving but it is recognized that they do not completely establish the suitability of sleeving for impregnation or encapsulation processes or for other specialized applications. Where necessary, the test methods in this part will need to be supplemented by appropriate impregnation or compatibility tests to suit the individual circumstances. The main changes from the previous edition are as follows: three additional methods for circumferential extension, voltage proof and thermal shock and alignment with North American methods.
Isolierschläuche - Teil 2: Prüfverfahren
Gaines isolantes souples - Partie 2: Méthodes d'essai
La CEI 60684-2:2011 donne les méthodes d'essai pour les gaines isolantes souples, y compris les gaines thermorétractables, initialement conçues pour isoler les conducteurs électriques et les connexions des appareils électriques, même si elles peuvent être utilisées pour d'autres usages. Les essais spécifiés sont conçus pour contrôler la qualité des gaines, mais il reste entendu qu'ils ne permettent pas d'établir entièrement l'aptitude de celles-ci à l'imprégnation ou à l'enrobage, pas plus que leur aptitude à être utilisées pour d'autres applications spécialisées. S'il y a lieu, il sera nécessaire de compléter les méthodes d'essai spécifiées dans cette partie par des essais appropriés d'imprégnation ou de compatibilité en fonction des cas particuliers. Les principales modifications par rapport à l'édition précédente sont les suivantes: trois méthodes supplémentaires pour l'allongement circonférentiel, l'essai en tension et le choc thermique ainsi qu'un alignement avec les méthodes nord-américaines.
Gibke izolacijske cevi - 2. del: Preskusne metode
Ta del IEC 60684 podaja preskusne metode za gibke izolacijske cevi, vključno s toplotno skrčljivimi cevmi, ki se uporabljajo predvsem za izolacijo električnih prevodnikov in priključkov električnih aparatov, čeprav se lahko uporabljajo tudi za druge namene.
Opredeljeni preskusi so namenjeni nadzoru kakovosti cevi, vendar se priznava, da ne ugotavljajo v celoti primernosti cevi za impregnacijo in enkapsulacijo ali za druge posebne uporabe. Po potrebi se preskusne metode iz tega dela dopolnijo s primernimi preskusi impregnacije ali združljivosti, ki ustrezajo posameznim okoliščinam.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2011
Gibke izolacijske cevi - 2. del: Preskusne metode
Flexible insulating sleeving - Part 2: Methods of test
Isolierschläuche - Teil 2: Prüfverfahren
Gaines isolantes souples - Partie 2: Méthodes d'essai
Ta slovenski standard je istoveten z: EN 60684-2:2011
ICS:
29.035.20 3ODVWLþQLLQJXPHQLL]RODFLMVNL Plastics and rubber insulating
PDWHULDOL materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 60684-2
NORME EUROPÉENNE
September 2011
EUROPÄISCHE NORM
ICS 17.220.99 Supersedes EN 60684-2:1997 + A1:2003 + A2:2005
English version
Flexible insulating sleeving -
Part 2: Methods of test
(IEC 60684-2:2011)
Gaines isolantes souples - Isolierschläuche – Teil 2: Prüfverfahren
Partie 2: Méthodes d'essai (IEC 60684-2:2011)
(CEI 60684-2:2011)
This European Standard was approved by CENELEC on 2011-09-14. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60684-2:2011 E
Foreword
The text of document 15/634/FDIS, future edition 3 of IEC 60684-2, prepared by IEC TC 15, Solid
electrical insulating materials, was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 60684-2:2011.
This document supersedes EN 60684-2:1997 + A1:2003 + A2:2005.
The main changes from EN 60684-2:1997 + A1:2003 + A2:2005 are as follows: three additional methods
for circumferential extension, voltage proof and thermal shock and alignment with North American
methods.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2012-06-14
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with the (dow) 2014-09-14
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
__________
Endorsement notice
The text of the International Standard IEC 60684-2:2011 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
NOTE Harmonized in EN 60068-2 series (not modified).
[2] IEC 60068-2 series
NOTE Harmonized as EN 60068-2-10:2005 (not modified).
[3] IEC 60068-2-10:2005
NOTE Harmonized as EN 60216-2:2005 (not modified).
[4] IEC 60216-2:2005
__________
- 3 - EN 60684-2:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60068-2-20 2008 Environmental testing - EN 60068-2-20 2008
Part 2-20: Tests -
Test T: Test methods for solderability and
resistance to soldering heat of devices with
leads
1)
IEC 60093 1980 Methods of test for volume resistivity and HD 429 S1 1983
surface resistivity of solid electrical insulating
materials
IEC 60212 2010 Standard conditions for use prior to and EN 60212 2011
during the testing of solid electrical insulating
materials
IEC 60216 Series Electrical insulating materials - Thermal EN 60216 Series
endurance properties
IEC 60216-4-1 2006 Electrical insulating materials - Thermal EN 60216-4-1 2006
endurance properties -
Part 4-1: Ageing ovens - Single-chamber
ovens
IEC 60216-4-2 2000 Electrical insulating materials - Thermal EN 60216-4-2 2000
endurance properties -
Part 4-2: Ageing ovens - Precision ovens for
use up to 300 °C
IEC 60243-1 1998 Electrical strength of insulating materials - EN 60243-1 1998
Test methods -
Part 1: Tests at power frequencies
2)
IEC 60250 1969 Recommended methods for the determination - -
of the permittivity and dielectric dissipation
factor of electrical insulating materials at
power, audio and radio frequencies including
metre wavelengths
IEC 60426 2007 Electrical insulating materials - Determination EN 60426 2007
of electrolytic corrosion caused by insulating
materials - Test methods
IEC 60587 2007 Electrical insulating materials used under EN 60587 2007
severe ambient conditions - Test methods for
evaluating resistance to tracking and erosion
IEC 60589 1977 Methods of test for the determination of ionic HD 381 S1 1979
impurities in electrical insulating materials by
extraction with liquids
1)
HD 429 S1 is superseded by EN 62631-1:2011, which is based on IEC 62631-1:2011.
2)
IEC 60250 is superseded by IEC 62631-1:2011.
Publication Year Title EN/HD Year
IEC 60684-3 Series Flexible insulating sleeving - EN 60684-3 Series
Part 3: Specification for individual types of
sleeving
IEC 60695-6-30 1996 Fire hazard testing - - -
Part 6: Guidance and test methods on the
assessment of obscuration hazard of vision
caused by smoke opacity from
electrotechnical products involved in fires -
Section 30: Small-scale static method -
Determination of smoke opacity - Description
of the apparatus
IEC/TS 60695-11-21 - Fire hazard testing - - -
Part 11-21: Test flames - 500 W vertical flame
test method for tubular polymeric materials
IEC 60754-1 1994 Test on gases evolved during combustion of - -
materials from cables -
Part 1: Determination of the amount of
halogen acid gas
3)
IEC 60754-2 (mod) 1991 Test on gases evolved during combustion of HD 602 S1 1992
electric cables -
Part 2: Determination of degree of acidity of
gases evolved during the combustion of
materials taken from electric cables by
measuring pH and conductivity
ISO 5-1 2009 Photography and graphic technology - Density - -
measurements -
Part 1: Geometry and functional notation
ISO 5-2 2009 Photography and graphic technology - Density - -
measurements -
Part 2: Geometric conditions for transmittance
density
ISO 5-3 2009 Photography and graphic technology - Density - -
measurements -
Part 3: Spectral conditions
ISO 5-4 2009 Photography and graphic technology - Density - -
measurements -
Part 4: Geometric conditions for reflection
density
ISO 37 2005 Rubber, vulcanized or thermoplastic - - -
Determination of tensile stress-strain
properties
ISO 62 2008 Plastics - Determination of water absorption EN ISO 62 2008
ISO 105-A02 - Textiles - Tests for colour fastness - - -
Part A02: Grey scale for assessing change in
colour
ISO 105-B01 - Textiles - Tests for colour fastness - EN ISO 105-B01 -
Part B01: Colour fastness to light: Daylight
3)
HD 602 S1 is superseded by EN 50267-1:1998 and EN 50267-2-3:1998.
- 5 - EN 60684-2:2011
Publication Year Title EN/HD Year
ISO 182-1 1990 Plastics - Determination of the tendency of - -
compounds and products based on vinyl
homopolymers and copolymers to evolve
hydrogen chloride and any other acidic
products at elevated temperature -
Part 1: Congo red method
ISO 182-2 1990 Plastics - Determination of the tendency of EN ISO 182-2 1999
compounds and products based on vinyl
chloride homopolymers and copolymers to
evolve hydrogen chloride and any other acidic
products at elevated temperature -
Part 2: pH method
ISO 974 2000 Plastics - Determination of the brittleness - -
temperature by impact
ISO 1431-1 2004 Rubber, vulcanized or thermoplastic - - -
Resistance to ozone cracking -
Part 1: Static and dynamic strain testing
ISO 4589-2 1996 Plastics - Determination of burning behaviour EN ISO 4589-2 1999
by oxygen index -
Part 2: Ambient-temperature test
ISO 4589-3 1996 Plastics - Determination of burning behaviour EN ISO 4589-3 1996
by oxygen index -
Part 3: Elevated-temperature test
ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010
IEC 60684-2 ®
Edition 3.0 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Flexible insulating sleeving –
Part 2: Methods of test
Gaines isolantes souples –
Partie 2: Méthodes d’essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XC
ICS 17.220.99 ISBN 978-2-88912-618-7
– 2 – 60684-2 © IEC:2011
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 General . 8
2 Test conditions . 10
3 Measurements of bore, wall thickness and concentricity . 10
4 Density . 12
5 Resistance to splitting after heating . 13
6 Heat shock (resistance to heat) . 13
7 Resistance to soldering heat . 14
8 Loss in mass on heating of uncoated textile glass sleeving . 14
9 Longitudinal change . 15
10 Deformation under load (resistance to pressure at elevated temperature) . 16
11 Thermal stability of PVC sleeving . 18
12 Volatile content of silicone sleeving . 19
13 Bending after heating . 19
14 Bending at low temperature . 20
15 Brittleness temperature . 20
16 Dimensional stability on storage (applicable to heat-shrinkable sleeving only) . 21
17 Hydrolysis of coating . 21
18 Flexibility (extruded sleeving only) . 22
19 Tensile strength, tensile stress at 100 % elongation, elongation at break and secant
modulus at 2 % elongation . 22
20 Fraying resistance test . 26
21 Breakdown voltage . 27
22 Insulation resistance . 29
23 Volume resistivity . 30
24 Permittivity and dissipation factor . 31
25 Resistance to tracking . 32
26 Flame propagation tests. 32
27 Oxygen index . 35
28 Transparency . 35
29 Ionic impurities test . 35
30 Silver staining test . 36
31 Electrolytic corrosion resistance . 36
32 Corrosion resistance (tensile and elongation) . 37
33 Copper corrosion (presence of corrosive volatiles) . 37
34 Colour fastness to light . 38
35 Resistance to ozone . 39
36 Resistance to selected fluids . 39
37 Thermal endurance . 40
38 Mass per unit length . 40
39 Heat ageing . 41
60684-2 © IEC:2011 – 3 –
40 Water absorption . 42
41 Restricted shrinkage (applicable to heat-shrinkable sleeving only) . 42
42 Colour stability to heat . 43
43 Smoke index . 43
44 Toxicity index . 48
45 Halogen content. 53
46 Acid gas generation . 55
47 Hot elongation and hot set . 55
48 Tension set (applicable to elastomeric sleeving only) . 56
49 Tear propagation (applicable to elastomeric sleeving only) . 56
50 Long term heat ageing (3 000 h) . 57
51 Dynamic shear at ambient temperature . 57
52 Dynamic shear at elevated temperature . 58
53 Dynamic shear after heat shock and heat ageing . 58
54 Rolling drum peel to aluminium . 59
55 Aluminium rod dynamic shear . 59
56 Sealing . 60
57 Adhesive T peel strength of two bonded heat-shrinkable substrates . 61
58 Circumferential extension . 62
59 Voltage proof . 63
60 Thermal shock . 63
Bibliography . 82
Figure 1 – Specimen for test resistance to soldering heat . 64
Figure 2 – Examples of sleeving after being subjected to test for resistance to soldering
heat . 65
Figure 3 – Arrangement for the test for resistance to pressure at elevated temperature
(Method A) . 65
Figure 4 – Arrangement for deformation under load (Method B) . 66
Figure 5 – Dumb-bell specimen for tensile strength test (ISO 37 Type2) . 67
Figure 6 – Dumb-bell specimen for tensile strength test (ISO 37 Type 1) . 67
Figure 7 – Sketch of fray test arrangement . 68
Figure 8 – Specimen for insulation resistance test . 69
Figure 9 – Standard propane burner for flame propagation test (sectional view) . 70
Figure 10 – Flame propagation test – Method A . 71
Figure 11 – Flame propagation test – Method B . 72
Figure 12 – Flame propagation test – Method C . 73
Figure 13 – Mandrel for restricted shrinkage test . 74
Figure 14 – Schematic details of burner for smoke index test. 75
Figure 15 – Schematic front view of smoke test sample holder, showing vertically
mounted sleeving samples . 76
Figure 16 – Assembly and fixture for dynamic shear at ambient temperature. 77
Figure 17 – Assembly for heat shock and heat ageing . 78
Figure 18 – Schematic arrangement of rolling drum peel. 78
– 4 – 60684-2 © IEC:2011
Figure 19 – Assembly preparation for aluminium rod dynamic shear . 79
Figure 20 – Test specimen for aluminium rod dynamic shear . 79
Figure 21 – Assembly for sealing test . 80
Figure 22 – Mandrel assembly . 80
Figure 23 – Slab specimen . 81
Figure 24 – T peel strength specimen . 81
60684-2 © IEC:2011 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FLEXIBLE INSULATING SLEEVING –
Part 2: Methods of test
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.
International Standard IEC 60684-2 has been prepared by IEC technical committee 15: Solid
electrical insulating materials.
This third edition cancels and replaces the second edition published in 1997, and constitutes a
minor revision and technical updating. The main changes from the previous edition are as
follows: three additional methods for circumferential extension, voltage proof and thermal
shock and alignment with North American methods.
The text of this standard is based on the following documents:
FDIS Report on voting
15/634/FDIS 15/644/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
– 6 – 60684-2 © IEC:2011
A list of all the parts in the IEC 60684 series, under the general title Flexible insulating
sleeving, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication 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.
60684-2 © IEC:2011 – 7 –
INTRODUCTION
This International Standard is one of a series which deals with flexible insulating sleeving. The
series consists of three parts:
Part 1: Definitions and general requirements (IEC 60684-1)
Part 2: Methods of test (IEC 60684-2)
Part 3: Specifications for individual types of sleeving (IEC 60684-3)
– 8 – 60684-2 © IEC:2011
FLEXIBLE INSULATING SLEEVING –
Part 2: Methods of test
1 General
1.1 Scope
This part of IEC 60684 gives methods of test for flexible insulating sleeving, including heat-
shrinkable sleeving, intended primarily for insulating electrical conductors and connections of
electrical apparatus, although they may be used for other purposes.
The tests specified are designed to control the quality of the sleeving but it is recognized that
they do not completely establish the suitability of sleeving for impregnation or encapsulation
processes or for other specialized applications. Where necessary, the test methods in this part
will need to be supplemented by appropriate impregnation or compatibility tests to suit the
individual circumstances.
1.2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
IEC 60068-2-20:2008, Environmental testing – Part 2-20: Tests – Test T: Test methods for
solderability and resistance to soldering heat of devices with leads
IEC 60093:1980, Methods of test for volume resistivity and surface resistivity of solid electrical
insulating materials
IEC 60212:2010, Standard conditions for use prior to and during the testing of solid electrical
insulating materials
IEC 60216 (all parts), Electrical insulating materials – Thermal endurance properties
IEC 60216-4-1:2006, Electrical insulating materials – Thermal endurance properties – Part 4-1:
Ageing ovens – Single-chamber ovens
IEC 60216-4-2:2000, Electrical insulating materials – Thermal endurance properties – Part 4-2:
Ageing ovens – Precision ovens for use up to 300 °C
IEC 60243-1:1998, Electrical strength of insulating materials – Test methods – Part 1: Tests at
power frequencies
IEC 60250:1969, Recommended methods for the determination of the permittivity and dielectric
dissipation factor of electrical insulating materials at power, audio and radio frequencies
including metre wavelengths
60684-2 © IEC:2011 – 9 –
IEC 60426:2007, Electrical insulating materials – Determination of electrolytic corrosion caused
by insulating materials – Test methods
IEC 60587:2007, Electrical insulating materials used under severe ambient conditions – Test
methods for evaluating resistance to tracking and erosion
IEC 60589:1977, Methods of test for the determination of ionic impurities in electrical insulating
materials by extraction with liquids
IEC 60684-3 (all parts), Flexible insulating sleeving – Part 3: Specifications for individual types
of sleeving
IEC 60695-6-30:1996, Fire hazard testing – Part 6: Guidance and test methods on the
assessment of obscuration hazards of vision caused by smoke opacity from electrotechnical
products involved in fires – Section 30: Small scale static method – Determination of smoke
opacity – Description of the apparatus
IEC/TS 60695-11-21, Fire hazard testing - Part 11-21: Test flames - 500 W vertical flame test
method for tubular polymeric materials
IEC 60754-1:1994, Tests on gases evolved during combustion of materials from cables –
Part 1: Determination of the amount of halogen acid gas
IEC 60754-2:1991, Test on gases evolved during combustion of electric cables – Part 2:
Determination of degree of acidity of gases evolved during the combustion of materials taken
from electric cables by measuring pH and conductivity
Amendment 1 (1997)
ISO 5-1:2009, Photography and graphic technology – Density measurements – Part 1:
Geometry and functional notation
ISO 5-2:2009, Photography and graphic technology – Density measurements – Part 2:
Geometric conditions for transmittance density
ISO 5-3:2009, Photography and graphic technology – Density measurements – Part 3: Spectral
conditions
ISO 5-4:2009, Photography and graphic technology – Density measurements – Part 4:
Geometric conditions for reflection density
ISO 37:2005, Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain
properties
ISO 62:2008, Plastics – Determination of water absorption
ISO 105-A02, Textiles – Tests for colour fastness – Part A02: Grey scale for assessing change
in colour
ISO 105-B01, Textiles – Tests for colour fastness – Part B01: Colour fastness to light: Daylight
ISO 182-1:1990, Plastics – Determination of the tendency of compounds and products based
on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other
acidic products at elevated temperature – Part 1: Congo red method
– 10 – 60684-2 © IEC:2011
ISO 182-2:1990, Plastics – Determination of the tendency of compounds and products based
on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other
acidic products at elevated temperature – Part 2: pH method
ISO 974:2000, Plastics – Determination of the brittleness temperature by impact
ISO 1431-1:2004, Rubber, vulcanized or thermoplastic – Resistance to ozone cracking –
Part 1: Static and dynamic strain test
ISO 13943: 2008, Fire safety – Vocabulary
ISO 4589-2:1996, Plastics – Determination of burning behaviour by oxygen index – Part 2:
Ambient-temperature test
ISO 4589-3:1996, Plastics – Determination of burning behaviour by oxygen index – Part 3:
Elevated-temperature test
2 Test conditions
2.1 Unless otherwise specified, all tests shall be made under standard ambient conditions
according to IEC 60212; i.e., at a temperature between 15 °C and 35 °C and at ambient relative
humidity.
In cases of dispute, the tests shall be carried out at a temperature of 23 °C ± 2 K and at
(50 ± 5) % relative humidity.
2.2 When heating at elevated temperature is specified for a test procedure, the specimen
shall be maintained for the prescribed period in a uniformly heated oven complying with
IEC 60216-4-1.
2.3 Where a test at low temperature is specified, the specification sheets of IEC 60684-3 may
require it to be carried out at –t °C or lower. In such cases the operator may carry out the test
at the specified temperature or any lower temperature which is convenient. If, however, at a
temperature below that specified the specimen fails to meet the requirements, the test shall be
repeated at the specified temperature, subject to a tolerance of ± 3 K as specified in
IEC 60212. If the specimen then passes, it shall be considered to have met the requirements.
3 Measurements of bore, wall thickness and concentricity
NOTE Within this standard, the terms "bore" and "internal diameter" are interchangeable.
3.1 Bore
3.1.1 Number of test specimens
Three specimens shall be tested.
3.1.2 General method
Plug or taper gauges of appropriate diameter shall be used to establish that the bore lies
between the maximum and minimum specified values. The gauge shall enter the bore without
causing expansion of the sleeving. A lubricant in powder form will assist when some types of
sleeving are being measured. For small bore sizes a micrometer microscope may be used and
measurements shall be made to the nearest 0,05 mm.
60684-2 © IEC:2011 – 11 –
3.1.3 Relaxed bore of expandable braided sleeving
Select a 250 mm long steel mandrel of the same diameter as the specified minimum relaxed
bore of the sleeving.
Insert the mandrel completely into the sleeving so that 50 mm of sleeving projects beyond the
mandrel at the cut end.
At the opposite end, wrap wire around the sleeving just beyond the end of the mandrel to
prevent the mandrel penetrating further into the sleeving.
Smooth the sleeving firmly onto the mandrel from the secured end towards the cut end and
twist the sleeving so that it traps the end of the mandrel. Secure by wrapping with wire.
Mark 200 mm gauge lines centrally on the sleeving using a marking medium which does not
degrade the sleeving, e.g., typewriter correction fluid.
Release the cut end and allow sleeving to relax.
Measure the distance between gauge lines in millimetres.
If this measurement is 195 mm or greater, then the sleeving is of the maximum relaxed bore
diameter.
If this measurement is less than 195 mm, repeat the determination with progressively larger
mandrels until the measurement is equal to or larger than 195 mm.
3.1.4 Expanded bore of expandable braided sleeving
Select a plug gauge of the same diameter as the specified minimum expanded bore.
Grip the sleeving 50 mm below the cut end.
Open the cut end of the sleeving for 10 mm and insert the plug gauge.
Attempt to push the plug gauge further into the undisturbed gripped sleeving.
If the plug gauge enters further without undue force, the sleeving is of the minimum expanded
bore.
If the plug gauge does not enter further without undue force, repeat the determination with
progressively smaller mandrels.
3.1.5 Result
Report all measured values as the result.
3.2 Wall thickness for textile sleeving
3.2.1 Number of test specimens
Three specimens shall be tested.
– 12 – 60684-2 © IEC:2011
3.2.2 Procedure
A plug gauge or mandrel shall be inserted so that it enters freely but has a diameter not less
than 80 % of the bore. The overall dimension shall then be measured using a micrometer
having flat anvils of approximately 6 mm in diameter. In making this measurement, the
pressure applied by the micrometer shall be just sufficient to close the sleeving on to the
inserted plug gauge or mandrel. The wall thickness shall be calculated by halving the
difference between the overall dimension and the plug gauge or mandrel diameter.
3.2.3 Result
Report all measured values for wall thickness as the result.
3.3 Minimum/maximum wall thickness and concentricity for extruded sleeving
3.3.1 Number of test specimens
Three specimens shall be tested.
3.3.2 Wall thickness
This standard does not give mandatory methods for making this measurement. By means of a
suitable number of tests, locate the points on the wall corresponding to the minimum and
maximum wall thickness. All measurements shall be measured to the nearest 0,01 mm. In
cases of dispute a calibrated micrometer microscope shall be used capable of measuring to
the nearest 0,001 mm.
NOTE The following methods of measurement have proved suitable: optical profile projector, optical comparator, a
suitable micrometer. In the event of a dispute, use one of the optical methods. A microscope micrometer has been
found suitable for measuring small bore sizes and for determining the inner and outer wall thicknesses of dual wall
sleeving.
3.3.3 Concentricity
Calculate the concentricity of each specimen of the sleeving by use of the following equation:
minimum wall thickness
concentricity (%) =
maximum wall thickness
3.3.4 Result
Report all values for minimum and maximum wall thickness and concentricity as the result.
4 Density
4.1 Number of test specimens
At least three specimens shall be tested.
4.2 Procedure
Any method for the determination of the density may be used which can ensure an accuracy
of 0,01 g/cm .
NOTE Small bore sleeving specimens should be cut longitudinally and opened out to avoid air entrapment during
the determination.
60684-2 © IEC:2011 – 13 –
4.3 Result
Identify the method selected for the determination and report all measured values for density;
the result is the mean unless specified otherwise in the specification sheets of IEC 60684-3.
5 Resistance to splitting after heating
5.1 Number of test specimens
Three specimens shall be tested.
5.2 Form of test specimen
The specimens shall be produced by cutting rings whose cut length equals the wall thickness.
Precautions shall be taken to ensure that the cut is clean since imperfections can affect the
result.
NOTE Where practical difficulties do not permit a square section ring to be cut, the length may be increased to not
more than 2,5 mm.
5.3 Procedure
The specimens shall be tested using a tapered mandrel which has an inclined angle of
(15 ± 1)°. The specimens shall be maintained for a period of (168 ± 2) h at a temperature of
70 °C ± 2 K unless another temperature is specified in IEC 60684-3, and then allowed to cool
to 23 °C ± 5 K. They shall then be rolled up the mandrel so that they are extended by an
amount equal to the percentage of nominal bore specified in IEC 60684-3. The specimens shall
be kept in that position and at a temperature of 23 °C ± 5 K for (24 ± 1) h and then examined
for splitting.
5.4 Result
Report whether there is any splitting.
6 Heat shock (resistance to heat)
6.1 Number of test specimens
Five specimens shall be tested.
6.2 Form of test specimens
Lengths of approximately 75 mm of sleeving, or specimens in accordance with Clause 19 shall
be prepared where tensile strength or elongation at break are to be measured. Where cut
pieces of sleeving are used the length shall be measured to the nearest 0,5 mm.
6.3 Procedure
The specimens shall be suspended vertically in an oven conforming to IEC 60216-4-1 or
IEC 60216-4-2 for 4 h ± 10 min at the temperature specified in IEC 60684-3.
The specimens shall be removed and allowed to cool to room temperature. They shall then be
examined for any signs of dripping or cracking. Measure the length and calculate the
percentage change. In addition, when so specified in IEC 60684-3, the specimens shall be
tested for tensile strength and/or elongation at break. Also, when so specified in IEC 60684-3,
the specimen shall be wound 360 degrees around a mandrel of diameter specified in
IEC 60684-3 at a uniform rate and within 2 s to 4 s. The specimens shall then be examined for
any signs of cracks. Side cracking of the flattened tubing shall not be cause for rejection.
– 14 – 60684-2 © IEC:2011
6.4 Result
Report all results from the visual examination. Report all values of change in length. Report all
measured values for tensile strength and/or elongation at break. The result is the central value
unless otherwise specified in the specification sheets of IEC 60684-3. Report any cracks after
the mandrel bend test.
7 Resistance to soldering heat
7.1 Number of test specimens
Three specimens shall be tested.
7.2 Form of test specimen
60 mm lengths of sleeving shall be used and approximately 150 mm of tinned copper wire, of a
diameter which permits a sliding fit in the sleeving.
The wire shall be bent through 90° at its middle point round a mandrel of diameter three times
the nominal bore of the sleeving.
The sleeving shall be slipped over the wire and worked round the bend so that it covers a
length of the straight part of the wire which will be vertical during the test, equal to 1,5 times
the nominal bore of the sleeving but with a minimum length of 1 mm (see Figure 1). The wire
shall be cut off on the part to be vertical during the test 20 mm beyond the sleeving.
The wire shall be cut off on the part to be horizontal during the test at the end of the sleeving.
Not less than 5 min after the wire has been bent, a high grade flux consisting of 25 % by mass
of colophony in 75 % by mass of 2-propanol (isopropanol) or of ethanol (ethyl alcohol), shall be
applied to the lower 6 mm of the protruding part of the wire. (Only non-activated colophony
shall be used, the acid value of which is not less than 155 mg KOH/g. A full specification is
given in Annex C of IEC 60068-2-20.)
7.3 Procedure
With the sleeving at a temperature of 23 °C ± 5 K, the test shall be started within 60 min of the
application of the flux. The wire is supported on its horizontal part at least 25 mm from the
bend. The vertical portion shall be immersed in the centre of a bath of molten solder so that
6 mm of the wire is immersed; a convenient way to achieve this is to mark the wire beforehand.
The wire shall be held in this position for (15 ± 1) s or as specified in IEC 60684-3. The solder
bath shall be not less than 25 mm in diameter and 12 mm deep and the temperature of the
solder shall be maintained at 260 °C ± 5 K during the test. To pass the test, no specimen shall
split or widen considerably, slight melting being permissible (see Figure 2).
7.4 Result
Report whether there is any splitting, widening or excessive melting.
8 Lo
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