SIST EN 60811-4-2:2005

SLOVENSKI SIST EN 60811-4-2:2005

STANDARD
april 2005
Materiali za izoliranje in oplaščenje električnih in optičnih kablov – Splošne
preskusne metode – 4-2. del: Posebne metode za polietilenske in
polipropilenske mase – Natezna trdnost in raztezek pri pretrganju po
kondicioniranju pri povišanih temperaturah – Preskus ovijanja po
kondicioniranju pri povišanih temparaturah po staranju v zraku – Meritev
povečanja mase – Preskus dolgotranje stabilnosti – Preskusna metoda za
oksidativno razgradnjo, katalizirano z bakrom (IEC 60811-4-2:2004)
Insulating and sheathing materials of electric and optical cables – Common test
methods – Part 4-2: Methods specific to polyethylene and polypropylene
compounds – Tensile strength and elongation at break after conditioning at
elevated temperature – Wrapping test after conditioning at elevated temparature –
Wrapping test after thermal ageing in air – Measurement of mass increase – Long-
term stability test – Test method for copper-catalyzed oxidative degradation
microscope (IEC 60811-4-2:2004)
ICS 29.035.20; 29.060.20 Referenčna številka
SIST EN 60811-4-2:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 60811-4-2
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2004


ICS 29.035.20; 29.060.20 Supersedes EN 60811-4-2:1999


English version


Insulating and sheathing materials of electric and optical cables –
Common test methods
Part 4-2: Methods specific to polyethylene and polypropylene compounds -
Tensile strength and elongation at break after conditioning at elevated temperature -
Wrapping test after conditioning at elevated temperature - Wrapping test after thermal
ageing in air - Measurement of mass increase - Long-term stability test -
Test method for copper-catalyzed oxidative degradation
(IEC 60811-4-2:2004)

Matériaux d'isolation et de gainage des câbles Isolier- und Mantelwerkstoffe für Kabel und isolierte
électriques et optiques - Méthodes d'essai communes Leitungen - Allgemeine Prüfverfahren
Partie 4-2: Méthodes spécifiques pour les mélanges Teil 4-2: Besondere Prüfverfahren für Polyethylen- und
polyéthylène et polypropylène - Résistance à la traction Polypropylen-Mischungen - Zugfestigkeit und
et allongement à la rupture après conditionnement à Reißdehnung nach Vorbehandlung bei erhöhter
température élevée - Essai d'enroulement après Temperatur - Wickelprüfung nach Vorbehandlung bei
conditionnement à température élevée - Essai erhöhter Temperatur - Wickelprüfung nach thermischer
d'enroulement après vieillissement thermique dans l'air - Alterung in Luft - Messung der Masseaufnahme -
Mesure de l'augmentation de masse - Essai de stabilité Langzeit(Lebensdauer)-Prüfung - Prüfverfahren der
à long terme - Méthode d'essai pour l'oxydation Sauerstoffalterung unter Kupfereinfluss
catalytique par le cuivre (IEC 60811-4-2:2004)
(CEI 60811-4-2:2004)

This European Standard was approved by CENELEC on 2004-07-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60811-4-2:2004 E

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EN 60811-4-2:2004 - 2 -
Foreword
The text of document 20/686/FDIS, future edition 2 of IEC 60811-4-2, prepared by IEC TC 20, Electric
cables, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60811-4-2 on 2004-07-01.
This European Standard supersedes EN 60811-4-2:1999.
The principal changes with respect to EN 60811-4-2:1999 are:
a) a measurement of tensile strength is included in Clause 8;
b) Clause 10 is now the only method in EN 60811 for the wrapping test after thermal ageing in air;
c) two ageing conditions are now specified for the long-term stability test in Annex A.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-07-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60811-4-2:2004 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60811-5-1 NOTE Harmonized as EN 60811-5-1:1999 (modified).
__________

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- 3 - EN 60811-4-2:2004
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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60811-1-1 1993 Insulating and sheathing materials of EN 60811-1-1 1995
electric and optical cables - Common test
methods
Part 1-1: General application -
Measurement of thickness and overall
dimensions - Tests for determining the
mechanical properties

IEC 60811-1-3 1993 Insulating and sheathing materials of EN 60811-1-3 1995
electric and optical cables - Common test
methods
Part 1-3: General application - Methods
for determining the density - Water
absorption tests - Shrinkage test

ISO 188 1998 Rubber, vulcanized or thermoplastic - -
Accelerated ageing and heat resistance
tests

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NORME CEI
INTERNATIONALE
IEC



60811-4-2
INTERNATIONAL


Deuxième édition
STANDARD

Second edition

2004-05


Matériaux d'isolation et de gainage des câbles
électriques et optiques – Méthodes d'essais
communes –
Partie 4-2:
Méthodes spécifiques pour les mélanges polyéthylène et
polypropylène – Résistance à la traction et allongement à la rupture
après conditionnement à température élevée – Essai d'enroulement
après conditionnement à température élevée – Essai d'enroulement
après vieillissement thermique dans l'air – Mesure de l'augmentation
de masse – Essai de stabilité à long terme – Méthode d'essai pour
l'oxydation catalytique par le cuivre

Insulating and sheathing materials of electric
and optical cables – Common test methods –
Part 4-2:
Methods specific to polyethylene and polypropylene compounds –
Tensile strength and elongation at break after conditioning at
elevated temperature – Wrapping test after conditioning at elevated
temperature – Wrapping test after thermal ageing in air –
Measurement of mass increase – Long-term stability test –
Test method for copper-catalyzed oxidative degradation
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For price, see current catalogue

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60811-4-2  IEC:2004 – 3 –
CONTENTS
FOREWORD.5

1 General.9
1.1 Scope.9
1.2 Normative references.9
2 Terms and definitions .9
3 Test values.11
4 Applicability.11
5 Type tests and other tests.11
6 Pre-conditioning.11
7 Median value.11
8 Tensile strength and elongation at break after conditioning at elevated temperature .11
8.1 General.11
8.2 Conditioning procedure.11
8.3 Tensile strength and elongation tests after conditioning at elevated
temperature.13
8.4 Expression of results .13
9 Wrapping test after conditioning at elevated temperature .13
9.1 General.13
9.2 Conditioning procedure.13
9.3 Test procedure.13
9.4 Evaluation of results .13
10 Wrapping test after thermal ageing in air.13
10.1 General.15
10.2 Apparatus.15
10.3 Sampling.15
10.4 Ageing procedure.15
10.5 Test procedure.15
10.6 Evaluation of results .15
11 Mass increase of insulation.17
11.1 General.17
11.2 Sampling.17
11.3 Test procedure.17
11.4 Calculation.17

Annex A (normative) Long-term stability test.19
Annex B (normative) Test method for copper-catalyzed oxidative degradation of
polyolefin insulated conductors (Oxidation Induction Time (OIT) test) .25

Bibliography .33

Figure B.1 – Representative melting endotherm for Indium .31
Figure B.2 – Evaluation of OIT from recorded-time-based thermogram .31

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60811-4-2  IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INSULATING AND SHEATHING MATERIALS OF ELECTRIC
AND OPTICAL CABLES – COMMON TEST METHODS –

Part 4-2: Methods specific to polyethylene and
polypropylene compounds –
Tensile strength and elongation at break after conditioning at elevated
temperature – Wrapping test after conditioning at elevated temperature –
Wrapping test after thermal ageing in air –
Measurement of mass increase – Long-term stability test –
Test method for copper-catalyzed oxidative degradation


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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 60811-4-2 has been prepared by IEC technical committee 20:
Electric cables.
This second edition cancels and replaces the first edition, published in 1990.

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60811-4-2  IEC:2004 – 7 –
The principal changes with respect to the previous edition are listed below:
a) A measurement of tensile strength is included in Clause 8.
b) Clause 10 is now the only method in IEC 60811 for wrapping test after thermal ageing in
air.
c) Two ageing conditions are now specified for the long-term stability test in Annex A.
The text of this standard is based on the following documents:
FDIS Report on voting
20/686/FDIS 20/695/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.
The committee has decided that the contents of this publication will remain unchanged until
2008. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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60811-4-2  IEC:2004 – 9 –
INSULATING AND SHEATHING MATERIALS OF ELECTRIC
AND OPTICAL CABLES – COMMON TEST METHODS –

Part 4-2: Methods specific to polyethylene and
polypropylene compounds –
Tensile strength and elongation at break after conditioning at elevated
temperature – Wrapping test after conditioning at elevated temperature –
Wrapping test after thermal ageing in air –
Measurement of mass increase – Long-term stability test –
Test method for copper-catalyzed oxidative degradation



1 General
1.1 Scope
This part of IEC 60811 specifies the test methods for testing polymeric insulating and sheath-
ing materials of electric and optical fibre cables for power distribution and communications,
including cables used on ships and in offshore applications. These test methods apply
specifically to polyolefin insulation and sheath.
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 60811-1-1:1993, Common test methods for insulating and sheathing materials of electric
cables – Part 1: Methods for general application – Section 1: Measurement of thickness and
overall dimensions – Tests for determining the mechanical properties
IEC 60811-1-3:1993, Insulating and sheathing materials of electric and optical cables – Part 1:
General application – Section 3: Methods for determining the density – Water absorption tests
– Shrinkage test
ISO 188, Rubber, vulcanized or thermoplastic – Accelerated ageing and heat-resistance tests
2 Terms and definitions
For the purposes of this standard, a distinction is made between low density, medium density
and high-density PE as shown below:
a
Density at 23 °C
Type of polyethylene
3
g/cm
Low-density polyethylene
≤ 0,925
Medium-density polyethylene >0,925 ≤ 0,940
High-density polyethylene > 0,940
a
These densities refer to unfilled resins, as determined by the method specified in Clause 8 of IEC 60811-1-3.

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60811-4-2  IEC:2004 – 11 –
3 Test values
Full test conditions (such as temperatures, durations, etc.) and full test requirements are not
specified in this standard. It is intended that they should be specified by the standard dealing
with the relevant type of cable.
Any test requirements which are given in this standard may be modified by the relevant cable
standard to suit the needs of a particular type of cable.
4 Applicability
Conditioning values and testing parameters are specified for the most common types of
insulating and sheathing compounds and of cables, wires and cords.
5 Type tests and other tests
The test methods described in this standard are primaril
...