EN 60811-2-1:1998
(Main)Insulating and sheathing materials of electric and optical cables - Common test methods - Part 2-1: Methods specific to elastomeric compounds - Ozone resistance, hot set and mineral oil immersion tests
Insulating and sheathing materials of electric and optical cables - Common test methods - Part 2-1: Methods specific to elastomeric compounds - Ozone resistance, hot set and mineral oil immersion tests
Specifies the test methods to be used for testing polymeric insulating and sheathing material of electric cables for power distribution and telecommunications including cables used on ships. Gives the methods for the ozone resistance test, hot set test and mineral oil immersion test, which apply to elastomeric compounds.
Isolier- und Mantelwerkstoffe für Kabel und isolierte Leitungen - Allgemeine Prüfverfahren - Teil 2-1: Besondere Verfahren für Elastomermischungen - Ozonbeständigkeitsprüfung, Wärme-Dehnungsprüfung, Ölbeständigkeitsprüfung
Matériaux d'isolation et de gainage des câbles électriques et optiques - Méthodes d'essais communes - Partie 2-1: Méthodes spécifiques pour les mélanges élastomères - Essais relatifs à la résistance à l'ozone, à l'allongement à chaud et à la résistance à l'huile
Précise les méthodes d'essai à employer pour l'essai des matériaux d'isolation et de gainage polymère des câbles électriques pour la distribution d'énergie et les télécommunications, y compris les câbles utilisés à bord des navires. Donne les méthodes pour l'essai de résistance à l'ozone, l'essai d'allongement à chaud et l'essai de résistance à l'huile, qui s'appliquent aux mélanges élastomères.
Materiali za izoliranje in oplaščenje električnih in optičnih kablov - Splošne preskusne metode - 2-1. del: Posebne metode za elastomerne mase - Preskusi odpornosti proti ozonu z nalaganjem na vročo podlago in potapljanjem v mineralna olja
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2000
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SUHVNXVQHPHWRGHGHO 3RVHEQHPHWRGH]DHODVWRPHUQHPDVH3UHVNXVL
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Insulating and sheathing materials of electric and optical cables - Common test methods
- Part 2-1: Methods specific to elastomeric compounds - Ozone resistance, hot set and
mineral oil immersion tests
Isolier- und Mantelwerkstoffe für Kabel und isolierte Leitungen - Allgemeine
Prüfverfahren - Teil 2-1: Besondere Verfahren für Elastomermischungen -
Ozonbeständigkeitsprüfung, Wärme-Dehnungsprüfung, Ölbeständigkeitsprüfung
Matériaux d'isolation et de gainage des câbles électriques et optiques - Méthodes
d'essais communes - Partie 2-1: Méthodes spécifiques pour les mélanges élastomères -
Essais relatifs à la résistance à l'ozone, à l'allongement à chaud et à la résistance à
l'huile
Ta slovenski standard je istoveten z: EN 60811-2-1:1998
ICS:
29.035.20 3ODVWLþQLLQJXPHQLL]RODFLMVNL Plastics and rubber insulating
PDWHULDOL materials
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME
CEI
INTERNATIONALE
IEC
60811-2-1
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1998-04
Matériaux d’isolation et de gainage
des câbles électriques et optiques –
Méthodes d’essais communes –
Partie 2-1:
Méthodes spécifiques pour les mélanges
élastomères – Essais relatifs à la résistance
à l’ozone, à l’allongement à chaud
et à la résistance à l’huile
Insulating and sheathing materials of electric
and optical cables – Common test methods –
Part 2-1:
Methods specific to elastomeric compounds –
Ozone resistance, hot set and mineral oil
immersion tests
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International Electrotechnical Commission
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60811-2-1 © IEC:1998 – 3 –
CONTENTS
Page
FOREWORD . 5
Clause
1 General. 7
1.1 Scope. 7
1.2 Normative references. 7
2 Test values. 7
3 Applicability. 7
4 Type tests and other tests . 9
5 Pre-conditioning. 9
6 Test temperature. 9
7 Median value. 9
8 Ozone resistance test. 9
8.1 Test method. 9
8.2 Determination of ozone concentration. 15
9 Hot set test . 17
9.1 Sampling and preparation of test pieces and determination
of their cross-sectional area . 17
9.2 Test apparatus. 19
9.3 Procedure. 19
9.4 Evaluation of results. 19
10 Mineral oil immersion test for sheaths. 19
10.1 Sampling and preparation of the test pieces . 19
10.2 Determination of the cross-sectional area of the test piece . 19
10.3 Oil to be used. 21
10.4 Procedure. 21
10.5 Determination of mechanical properties. 21
10.6 Expression of results. 21
60811-2-1 © IEC:1998 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
INSULATING AND SHEATHING MATERIALS
OF ELECTRIC AND OPTICAL CABLES –
COMMON TEST METHODS –
Part 2-1: Methods specific to elastomeric compounds –
Ozone resistance, hot set and mineral oil immersion tests
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60811-2-1 has been prepared by technical committee 20: Electric
cables.
This second edition cancels and replaces the first edition published in 1986, its amendment 1
(1992) and amendment 2 (1993). This second edition constitutes a technical revision.
The text of this standard is based on the first edition, amendments 1 and 2 and on the following
documents:
FDIS Report on voting
20/328/FDIS 20/333/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.
60811-2-1 © IEC:1998 – 7 –
INSULATING AND SHEATHING MATERIALS
OF ELECTRIC AND OPTICAL CABLES –
COMMON TEST METHODS –
Part 2-1: Methods specific to elastomeric compounds –
Ozone resistance, hot set and mineral oil immersion tests
1 General
1.1 Scope
This standard specifies the test methods to be used for testing polymeric insulating and
sheathing materials of electric and optical cables for power distribution and telecommuni-
cations, including cables used on ships.
This standard gives the methods for the ozone resistance test, hot set test and mineral oil
immersion test, which apply to elastomeric compounds.
1.2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 60811. At the time of publication, the editions indicated
were valid. All normative documents are subject to revision, and parties to agreements based
on this part of IEC 60811 are encouraged to investigate the possibility of applying the most
recent editions of the normative documents indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
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 60811-1-2:1985, Common test methods for insulating and sheathing materials of electric
cables – Part 1: Methods for general application – Section Two: Thermal ageing methods
2 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.
3 Applicability
Conditioning values and testing parameters are specified for the most common types of
insulating and sheathing compounds and of cables, wires and cords.
60811-2-1 © IEC:1998 – 9 –
4 Type tests and other tests
The test methods described in this standard are intended, in the first instance, to be used for
type tests. In certain tests, where there are essential differences between the conditions
for type tests and those for more frequent tests, such as routine tests, these differences are
indicated.
5 Pre-conditioning
All the tests shall be carried out not less than 16 h after the extrusion or vulcanization (or
cross-linking), if any, of the insulating or sheathing compounds.
If the test is carried out at ambient temperature, the test-pieces shall be kept for at least 3 h at
a temperature of 23 °C ± 5 °C.
6 Test temperature
Unless otherwise specified, tests shall be made at ambient temperature.
7 Median value
When several test results have been obtained and ordered in an increasing or decreasing
succession, the median value is the middle value if the number of available values is odd, and
is the mean of the two middle values if the number is even.
8 Ozone resistance test
Warning: Attention is drawn to the toxicity of ozone. Precautions should be taken to minimize
exposure of personnel to it at all times and the concentration in the workroom environment
should not be allowed to exceed 0,1 ppm (parts ozone per million parts air by volume), or the
value in the current industrial hygienic standard, whichever is the lower.
8.1 Test method
8.1.1 Test apparatus
a) A device for generating a controlled amount of ozone.
b) A means for circulating ozonized air under controlled conditions of humidity and
temperature through a chamber containing the test pieces to be tested.
c) A means for determination of ozone concentration.
d) A suitable device for the clamping and elongation of test pieces.
e) Cylindrical mandrels consisting of wood or metal.
f) A desiccator filled with silica gel or equivalent material.
8.1.2 Sampling
8.1.2.1 Sampling of insulation
Whether the cable is single or multicore, only one core needs to be tested. Sufficient length of
core shall be cut from a position not less than 1,5 m from the end of the length of cable to
provide two test pieces, unless the core has an extruded semi-conductor layer on the outside,
in which case sufficient length for four test pieces shall be taken.
Any sample that shows signs of mechanical damage shall not be used for the tests.
60811-2-1 © IEC:1998 – 11 –
8.1.2.2 Sampling of sheath
One sample of the cable or cord to be tested, or of the sheath removed from the cable, shall be
taken of sufficient size to provide a minimum of two test pieces.
Any sample that shows signs of mechanical damage shall not be used for the tests.
8.1.3 Preparation of test pieces
8.1.3.1 Test pieces of insulation
Any protective coverings present on the core shall be removed without damaging the insulation,
unless they were applied directly to the insulation prior to vulcanization and are adherent to it.
If the core has a semi-conducting layer in the form of tape on the outside, this shall be
removed.
If the core has an extruded semi-conducting screen on the outside, this shall be removed from
two test pieces and left in position on the other
...
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