EN 50396:2005
(Main)Non electrical test methods for low voltage energy cables
Non electrical test methods for low voltage energy cables
EN 50396 contains non-electrical test methods required for the testing of harmonized low voltage energy cables, especially those rated at up to and including 450/750 V. NOTE 1 A description of the origin of these test methods and of the background to the EN are given in the Introduction and Annex A. The particular cable standard dictates the tests which need to be performed on the relevant cable type. It also specifies whether the specific test is a type test (T), a sample test (S) or a routine test (R) for the particular cable type. NOTE 2 T, S and R are defined in the relevant cable standard. The requirements to be met during or after the test are specified for the particular cable type in the relevant cable standard. However, some test requirements are obvious and universal, such as the fact that no cracks shall occur during ozone test, and these are stated in the particular test method. Test methods for use specifically in utility power cables are not covered by this EN. They can be found in HD 605. Test methods for use specifically in communications cables are the responsibility of CENELEC TC 46X. At present such test methods are given in EN 50289 (series).
Nicht-elektrische Prüfverfahren für Niederspannungskabel und -leitungen
EN 50396 enthält nicht-elektrische Prüfverfahren für die Prüfung von harmonisierten Niederspannungskabeln und –leitungen, insbesondere für die mit Nennspannungen bis 450/750 V. ANMERKUNG 1 Eine Beschreibung der Herkunft dieser Prüfverfahren und des Hintergrunds dieser EN findet sich in der Einleitung und im Anhang A. Die jeweilige Kabel- und Leitungsnorm bestimmt die Prüfungen, die an der entsprechenden Kabel- und Leitungsbauart durchgeführt werden müssen. Sie legt ebenfalls fest, ob die spezielle Prüfung eine Typ- (T), Auswahl- (S) oder Stückprüfung (R) für die jeweilige Kabel- oder Leitungsbauart ist. ANMERKUNG 2 T, S und R sind in der zutreffenden Kabel- und Leitungsnorm festgelegt. Die Anforderungen, die während oder nach der Prüfung erfüllt werden müssen, sind für die jeweilige Kabel- oder Leitungsbauart in der zugehörigen Kabel- oder Leitungsnorm festgelegt. Einige Prüfanforderungen sind offensichtlich und allgemeingültig, zum Beispiel die Tatsache, dass während der Ozonprüfung keine Risse auftreten dürfen; diese Anforderungen sind im jeweiligen Prüfverfahren niedergelegt. Prüfverfahren, die speziell bei Energieversorgungskabeln anzuwenden sind, werden durch diese EN nicht abgedeckt. Sie sind in HD 605 zu finden. Prüfverfahren, die speziell bei Kommunikationskabeln anzuwenden sind, liegen im Zuständigkeitsbereich von CENELEC TC 46X. Zur Zeit sind diese Prüfverfahren in EN 50289 (Reihe) angegeben.
Méthodes d'essais non électriques pour les câbles d'énergie basse tension
La EN 50396 contient les méthodes d’essais non électriques prescrites pour l’essai des câbles d’énergie basse tension harmonisés, en particulier ceux de tension assignée au plus égale à 450/750 V. NOTE 1 Une description de l’origine de ces matériaux et du fondement de la EN est donné dans l’introduction et dans l’Annexe A. La norme de câble particulière spécifie les essais qui doivent être effectués sur le type de câble correspondant. Elle précise également si l’essai spécifique est un essai de type (T), un essai sur prélèvements (S) ou un essai individuel (R) pour le type de câble particulier. NOTE 2 T, S et R sont définis dans la norme de câble correspondante. Les exigences à satisfaire pendant ou après l’essai sont indiquées pour le type de câble particulier dans la norme de câble correspondante. Cependant, certaines exigences d’essai sont évidentes et universelles, comme le fait qu’aucune craquelure ne doit se produire pendant l’essai à l’ozone. Ces exigences sont indiquées dans la méthode d’essai particulière. Les méthodes d’essai à utiliser spécifiquement pour les câbles de distribution d’énergie ne sont pas couvertes par la présente EN. Elles figurent dans le HD 605. Les méthodes d’essai à utiliser spécifiquement pour les câbles de communications sont de la responsabilité du CENELEC TC 46X. Actuellement, de telles méthodes sont indiquées dans la EN 50289 (série).
Metode za preskušanje neelektričnih lastnosti nizkonapetostnih energetskih kablov
General Information
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Standards Content (Sample)
SLOVENSKI SIST EN 50396:2005
STANDARD
december 2005
Metode za preskušanje neelektričnih lastnosti nizkonapetostnih energetskih
kablov
Non electrical test methods for low voltage energy cables
ICS 29.060.20 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD EN 50396
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2005
ICS 29.060.20 Partially supersedes HD 21.2 S3:1997 + A1:2002 &
HD 22.2 S3:1997 + A1:2002
English version
Non electrical test methods for low voltage energy cables
Méthodes d'essais non électriques Nicht-elektrische Prüfverfahren
pour les câbles d'énergie basse tension für Niederspannungskabel und -leitungen
This European Standard was approved by CENELEC on 2005-07-01. 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
© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50396:2005 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 20, Electric
cables. In accordance with the decision of TC 20 at its Setubal meeting (June 2004), the text
of the draft was submitted to the formal vote. It was approved by CENELEC as EN 50396 on
2005-07-01.
This European Standard, together with EN 50395:2005, supersedes HD 21.2 S3:1997 +
A1:2002 and HD 22.2 S3:1997 + A1:2002.
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) 2006-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-07-01
__________
– 3 – EN 50396:2005
Contents
Page
1 Scope .5
2 Normative references .5
3 General test requirements.6
3.1 Sampling .6
3.2 Pre-conditioning .6
3.3 Test temperature.6
3.4 Test values.6
4 General test methods for dimensions .6
4.1 Measurement of insulation thickness .6
4.2 Measurement of sheath thickness for circular cables.7
4.3 Measurement of sheath thickness for flat cables .7
4.4 Measurement of overall dimensions and ovality.8
5 Tests relating to marking and colouring .9
5.1 Durability.9
5.2 Green-and-yellow measurement .9
6 Tests for mechanical strength of cables .11
6.1 Static flexibility test .11
6.2 Two pulley flexing test.13
6.3 Three pulley flexing test .18
6.4 Bending test .19
6.5 Kink test.20
6.6 Wear resistance test.23
6.7 Snatch test.24
6.8 Test for separation of cores.25
7 Tests for resistance to heat .25
7.1 Test of the resistance to hot particles .25
7.2 Test for resistance to heat of textile braids .26
8 Chemical and related tests.28
8.1 Ozone resistance test.28
8.2 Solderability test for plain conductors .30
9 Tests specific to extensible leads .32
9.1 Extension test .32
9.2 Endurance test .33
9.3 Tests under fire conditions .35
10 Tests specific to thermoplastic polyurethane sheath.35
10.1 Determination of the saponifìcation value of the polyurethane sheath.35
10.2 Tear resistance test.37
10.3 Water resistance .38
Annex A (informative) Source of non-electrical test methods in EN 50396.40
Annex B (normative) Rounding of numbers .41
Annex C (informative) Table for the calculation of α.42
Annex D (normative) Special national conditions.44
Bibliography.45
Figure 1 - Measurement of sheath thickness (flat cable) .8
Figure 2a - Measurement of the green-and-yellow proportion.9
Figure 3 - Static Flexibility Test.12
Figure 4 - Flexing apparatus .17
Figure 5 - Modified carrier "C".19
Figure 6 - Bending Test Apparatus.20
Figure 7 - Kink test apparatus .22
Figure 8 - Arrangement for wear-resistance test. .24
Figure 9 - Device for testing resistance to hot particles.26
Figure 10 - Apparatus for the test for resistance to heat of textile braid.27
Figure 11 - Example of a clamping device.30
Figure 12 - Modified flexing apparatus for extensible leads .34
Figure 13 - Modified flexing apparatus for short extensible leads .34
Figure 14 - Test piece.38
Figure 15 - Test piece before being placed in the jaws of the tensile testing machine .38
Table 1a - Mass of weight and diameter of pulleys – thermoplastic cables .14
Table 1b - Mass of weight and diameter of pulleys – Crosslinked cables.16
Table 2a - Current loadings – Thermoplastic cables.17
Table 2b - Current loadings – Crosslinked cables .17
Table 3 - Current loading and diameter of pulley wheels .18
Table 4 - Tensile force exerted by the weight and test currents.21
Table for the calculation of α (continued) .43
Table 1a - Mass of weight and diameter of pulleys – thermoplastic cables .44
Table 1b - Mass of weight and diameter of pulleys – Crosslinked cables.44
Table 2a - Current loadings – Thermoplastic cables.44
Table 2b - Current loadings – Crosslinked cables .44
– 5 – EN 50396:2005
Introduction
EN 50396 contains the non-electrical test methods that are used for harmonized low voltage
energy cables. These non-electrical test methods include all those previously contained in
HD 21 and HD 22. Annex A gives a comparison between the original location of each test
method and its place in this new EN.
The content of EN 50396 is not, and will not be, restricted only to test methods for cables to
HD 21 and HD 22. Other test methods for harmonized LV cables may be included.
Furthermore, the use of test methods in EN 50396 for cables outside HD 21 and HD 22 is not
prohibited, but it is strongly recommended that expert advice be taken before such use, or
before any proposal for incorporation into another standard.
1 Scope
EN 50396 contains non-electrical test methods required for the testing of harmonized low
voltage energy cables, especially those rated at up to and including 450/750 V.
NOTE 1 A description of the origin of these test methods and of the background to the EN are given in the
Introduction and Annex A.
The particular cable standard dictates the tests which need to be performed on the relevant
cable type. It also specifies whether the specific test is a type test (T), a sample test (S) or a
routine test (R) for the particular cable type.
NOTE 2 T, S and R are defined in the relevant cable standard.
The requirements to be met during or after the test are specified for the particular cable type
in the relevant cable standard. However, some test requirements are obvious and universal,
such as the fact that no cracks shall occur during ozone test, and these are stated in the
particular test method.
Test methods for use specifically in utility power cables are not covered by this EN. They can
be found in HD 605.
Test methods for use specifically in communications cables are the responsibility of
CENELEC TC 46X. At present such test methods are given in EN 50289 (series).
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.
Publication Year Title
EN 60332-1-2 2004 Tests on electric and optical fibre cables under fire conditions -
Par1-2: Test for vertical flame propagation for a single insulated
wire or cable - Procedure for 1 kW pre-mixed flame
EN 50395 2005 Electrical test methods for low voltage energy cables
EN 60695-11-5 2005 Fire hazard testing - Part 11-5: Test flames - Needle-flame test
method - Apparatus, confirmatory test arrangement and
guidance
EN 60811-1-1 1995 Insulating and sheathing materials of electric and optical cables -
A1 2001 Common test methods - Part 1-1: General application -
Measurement of thickness and overall dimensions - Tests for
determining the mechanical properties
EN 60811-1-2 1995 Insulating and sheathing materials of electric and optical cables -
A2 2000 Common test methods - Part 1-2: General application - Thermal
ageing methods
EN 60811-2-1 1998 Insulating and sheathing materials of electric and optical cables -
A1 2001 Common test methods - Part 2-1: Methods specific to
elastomeric compounds - Ozone resist
...
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