SIST EN 50393:2015
(Main)Test methods and requirements for accessories for use on distribution cables of rated voltage 0,6/1,0 (1,2) kV
Test methods and requirements for accessories for use on distribution cables of rated voltage 0,6/1,0 (1,2) kV
This European Standard details the performance requirements and the test methods for type testing of cable accessories for use with power distribution cables of rated voltage 0,6/1,0 (1,2) kV as defined in HD 603 or other relevant cable standards.
Cable accessories covered by this European Standard include joints, stop ends and outdoor terminations for extruded solid dielectric insulated cables and transition joints between extruded solid dielectric insulated and impregnated paper insulated cables. Joints, stop ends and outdoor terminations for impregnated paper insulated cables are not included.
The service operating conditions of accessories should be compatible with the service operating conditions of cables on which they are to be installed.
Accessories for special applications such as submarine, shipboard, explosive or seismic environments, or where specified fire performance characteristics are required, are not included.
NOTE 1 This European Standard does not invalidate existing approvals of products achieved on the basis of national standards and specifications and/or the demonstration of satisfactory service performance. However, products approved according to such national standards or specifications cannot directly claim approval to this European standard.
NOTE 2 It may be possible, subject to agreement between supplier and purchaser, and/or the relevant conformity assessment body, to demonstrate that conformity to the earlier standard can be used to claim conformity to this European Standard, provided an assessment is made of any additional type testing that may need to be carried out. Any such additional testing that is part of a sequence of testing cannot be done separately.
Prüfverfahren und Prüfanforderungen für die Garnituren von Verteilerkabeln mit einer Nennspannung von 0,6/1,0 (1,2) kV
Diese Europäische Norm beschreibt Prüfverfahren und Mindestanforderungen für die Typprüfungen an Kabelgarnituren für Energieverteilungskabel mit Nennspannungen 0,6/1,0 (1,2) kV, wie in HD 603 bzw. anderen Normen für entsprechende Kabel festgelegt.
Die in dieser Europäischen Norm behandelten Kabelgarnituren umfassen Muffen, Endmuffen und Freiluft-Endverschlüsse für extrudierte, kunststoffisolierte Kabel und Übergangsmuffen zwischen extrudierten, kunststoffisolierten Kabeln und Kabeln mit massegetränkter Papierisolierung. Nicht enthalten sind Muffen, Endmuffen und Freiluft-Endverschlüsse für Kabel mit massegetränkter Papierisolierung.
Die Betriebsbedingungen für Garnituren sollten denen der Kabel angepasst sein, auf denen sie installiert werden.
Diese Norm gilt nicht für Garnituren für spezielle Anwendungsbereiche, z.B. für Seekabel, Schiffskabel oder für den Einsatz in explosiver bzw. erdbebengefährdeter Umgebung oder einer Umgebung, in der besondere Leistungsparameter bezüglich der Feuerbeständigkeit erforderlich sind.
ANMERKUNG 1 Durch diese Europäische Norm werden bestehende Zulassungen von Produkten nicht ungültig, die auf der Grundlage nationaler Normen und Spezifikationen und/oder des Nachweises der Funktionssicherheit erlangt wurden. Jedoch können nach nationalen Normen oder Spezifikationen zugelassene Garnituren nicht automatisch beanspruchen, als nach dieser Europäischen Norm zugelassen zu gelten.
ANMERKUNG 2 Sofern eine Bewertung aller notwendigen Typprüfungen, die zusätzlich durchgeführt werden müssen, vorliegt, ist durch eine Vereinbarung zwischen Lieferant und Kunde und/oder der entsprechenden Konformitätsbewertungsstelle das Erbringen eines Nachweises der Konformität zu der früheren Norm möglich, um als nach dieser Europäischen Norm zugelassen zu gelten. Zusätzliche Prüfungen, die Teil einer Prüffolge sind, dürfen nicht als gesonderte Prüfung durchgeführt werden.
Méthodes et prescriptions d'essai pour les accessoires de câbles de distribution de tension assignée 0,6/1,0 (1,2) kV
La présente Norme Européenne définit les exigences de performance et les méthodes d’essai de type pour les accessoires utilisés sur les câbles de distribution d’énergie de tension assignée 0,6/1,0 (1,2) kV définis par le HD 603 ou d'autres normes de câbles applicables.
Les accessoires de câbles couverts par la présente Norme Européenne incluent les jonctions et dérivations, les bouts perdus et les extrémités extérieures pour câbles à isolant synthétique extrudé et les jonctions de transition entre câbles à isolant synthétique extrudé et câbles isolés au papier imprégné. Elle ne concerne pas les jonctions et les dérivations, les bouts perdus et les extrémités extérieures pour câbles isolés au papier imprégné.
Il convient que les conditions d'exploitation des accessoires soient compatibles avec celles des câbles sur lesquels ils sont à installer.
Les accessoires pour des applications spécifiques telles que les applications sous-marines, à bord des navires, ou bien des environnements présentant des risques d'explosions ou sismiques, ou dans le cas d'exigences de tenue au feu spécifiées ne sont pas inclus.
NOTE 1 La présente Norme Européenne ne remet pas en cause les agréments existants des produits obtenus selon des normes et spécifications nationales et/ou la démonstration d’un comportement satisfaisant en service. Toutefois, les produits approuvés selon lesdites normes ou spécifications nationales ne peuvent prétendre directement à l'agrément selon la présente Norme Européenne.
NOTE 2 Il peut être possible, selon accord entre le fournisseur et l'acheteur, et/ou l'organisme d'évaluation de la conformité correspondant, de démontrer que la conformité avec la norme antérieure peut être utilisée pour prétendre à la conformité à la présente Norme Européenne, à condition que soit réalisée une évaluation de tout essai de type supplémentaire pouvant être nécessaire. Tout essai supplémentaire de cet ordre faisant partie d'une séquence d'essais ne peut être effectué séparément.
Preskusne metode in zahteve za pribor, ki se uporablja na distribucijskih kablih za naznačeno napetost 0,6/1,0 (1,2) kV
Ta evropski standard podrobno opisuje zahteve glede zmogljivosti in preskusne metode za tipsko preskušanje dodatkov kablov, ki se uporabljajo z distribucijskimi kabli naznačene napetosti 0,6/1,0 (1,2) kV, kot je opredeljeno v standardu HD 603 ali drugih ustreznih standardih za kable.
Med dodatke kablov, ki jih zajema ta evropski standard, spadajo spojke, slepi končniki in zunanji priključki za kable, izolirane z ekstrudiranim trdnim dielektrikom in prehodne spojke med kabli, izoliranimi z ekstrudiranim trdnim dielektrikom in kabli, izoliranimi z impregniranim papirjem. Spojke, slepi končniki in zunanji priključki za kable, izolirane z impregniranim papirjem, niso vključeni.
Pogoji uporabe dodatkov morajo biti v skladu s pogoji uporabe kablov, na katere bodo nameščeni.
Dodatki, namenjeni posebni uporabi, na primer pod vodo, na ladji ali v eksplozivnih ali potresnih okoljih, ali uporabi, pri kateri so potrebne določene posebne lastnosti ob požaru, niso vključeni. OPOMBA 1 Ta evropski standard ne izniči obstoječih odobritev izdelkov, prejetih na podalgi nacionalnih standardov in specifikacij in/ali prikazu zadovoljivega delovanja. Vendar izdelki, odobreni na podlagi omenjenih nacionalnih standardov ali specifikacij, se ne morejo neposredno sklicevati na odobritev tega evropskega standarda.
OPOMBA 2 Odvisno od dogovora med dobaviteljem in kupcem in/ali ustreznim telesom za ocenjevanje skladnosti, je mogoče prikazati, da se lahko skladnost s prejšnjimi standardi uporabi za sklicevanje na skladnost s tem evropskim standardom, če se predhodno oceni, ali je potrebno izvesti dodatne tipske preskuse. Dodatnih preskusov, ki so del zaporedja preskusov, ni mogoče izvesti posebej.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2015
Nadomešča:
SIST EN 50393:2006
Preskusne metode in zahteve za pribor, ki se uporablja na distribucijskih kablih za
naznačeno napetost 0,6/1,0 (1,2) kV
Test methods and requirements for accessories for use on distribution cables of rated
voltage 0,6/1,0 (1,2) kV
Prüfverfahren und Prüfanforderungen für die Garnituren von Verteilerkabeln mit einer
Nennspannung von 0,6/1,0 (1,2) kV
Méthodes et prescriptions d'essai pour les accessoires de câbles de distribution de
tension assignée 0,6/1,0 (1,2) kV
Ta slovenski standard je istoveten z: EN 50393:2015
ICS:
29.120.20 Spojni elementi Connecting devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50393
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2015
ICS 29.120.20 Supersedes EN 50393:2006
English Version
Test methods and requirements for accessories for use on
distribution cables of rated voltage 0,6/1,0 (1,2) kV
Méthodes et prescriptions d'essai pour les accessoires de Prüfverfahren und Prüfanforderungen für die Garnituren von
câbles de distribution de tension assignée 0,6/1,0 (1,2) kV Verteilerkabeln mit einer Nennspannung von 0,6/1,0 (1,2)
kV
This European Standard was approved by CENELEC on 2014-12-08. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50393:2015 E
Contents
Foreword.4
1 Scope .5
2 Normative references .5
3 Terms and definitions .7
4 Components .8
4.1 Connectors . 8
4.2 Materials . 9
5 Electrical characteristics . 9
5.1 Rated voltage . 9
5.2 Current rating . 9
6 Range of compliance . 9
6.1 General . 9
6.2 Cables . 9
6.3 Connectors for joints . 10
6.4 Water immersion depth. 11
6.5 Transition joints . 11
7 Type tests . 11
7.1 General . 11
7.2 Test samples . 12
7.3 Sequence of tests . 12
8 Test methods . 15
8.1 General . 15
8.2 Impulse voltage withstand test at ambient temperature. 16
8.3 AC voltage withstand test . 16
8.4 Insulation resistance test . 17
8.5 Impact test at ambient temperature . 17
8.6 Heating cycle test . 18
8.7 Immersion test – test installation . 19
8.8 Examination . 19
8.9 Metallic screen short-circuit current withstand test . 20
Annex A (informative) Determination of cable conductor temperature . 29
Annex B (informative) Identification of test cable . 34
Annex C (informative) Identification of accessory test samples . 35
Annex D (informative) Identification of connector . 36
Bibliography . 37
Figures
Figure 1 – Example of envelope diameter . 11
Figure 2 – Typical arrangement for the impact test for joints at ambient temperature. 21
Figure 3 – Typical arrangement for the heating cycle for joints in air . 22
Figure 4 – Typical arrangement for the heating cycle test for joints in water . 22
Figure 5 – Typical arrangement for the heating cycle test for outdoor terminations in water . 23
Figure 6 – Method of connection of three-phase cables for the heating cycle test on a straight
joint . 24
– 3 – EN 50393:2015
Figure 7 – Method of connection of three-phase cables for the heating cycle test on a branch joint
where the main cable conductor cross-section is greater than 50 mm² and the branch cable
conductor cross-section is less than or equal to 50 mm² . 25
Figure 8 – Method of connection of three-phase main and branch cables of equal conductor
cross-section for the heating cycle test on a branch joint . 26
Figure 9 – Method of connection of three-phase main and branch cables of unequal conductor
cross-section for the heating cycle test on a branch joint . 27
Figure 10 – Typical heating cycle . 28
Figure 11 – Arrangement for the screen short-circuit test . 28
Figure A.1 – Arrangement for the cable calibration test . 30
Figure A.2 – Variation of θ with θ for various heating currents . 33
c st
Tables
Table 1 – Summary of compliance with different cable insulations. 10
Table 2 – Compliance extension for conductor connectors in joints . 10
Table 3 – Test sequence for joints for solid extruded dielectric insulated cables and for transition
joints between solid extruded dielectric insulated cables and impregnated paper insulated
cables . 12
Table 4 – Test sequence for stop ends on solid extruded dielectric insulated cables . 13
Table 5 – Test sequence for outdoor terminations on solid extruded dielectric insulated cables . 13
Table 6 – Number of test samples and conductor cross-section: straight joints . 14
Table 7 – Number of test samples and conductor cross-section: branch joints . 14
Table 8 – Number of test samples and conductor cross-section: stop ends . 15
Table 9 – Number of test samples and conductor cross-section: outdoor terminations . 15
Foreword
This document (EN 50393:2015) has been prepared by CLC/TC 20 “Electric cables”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2015-12-08
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2017-12-08
conflicting with this document have to
be withdrawn
This document supersedes EN 50393:2006.
– in Clause 1 'Scope', the revised statement referring to 'existing approvals' has been inserted;
– in Clause 3 'Definitions', definitions of stop end types have been revised to align with those of
joints, and definitions of 'rigid' and 'non-rigid' joints have been removed;
– in Clause 6 'Range of compliance', the numbers of joint and termination test samples have been
increased (see also Table 6), compliance restriction and extension with regard to different cable
designs have been clarified, and compliance restrictions and extensions relating to conductor
connectors have been inserted and shown in a new Table 2;
– in 7.3, Table 3, joints of Type II are subject to a new test involving 9 heating cycles in water
without oversheath damage (see also 8.6.2);
– in 7.3, Tables 3, 4 and 5, the footnotes referring to examination of tested accessories have been
removed;
– in Clause 8 'Test methods', the AC voltage withstand test procedure has been simplified and
clarified, references to 'rigid' and 'non-rigid' joints have been removed, reference to the 9 cycle
test for Type II joints (Table 3) has been inserted, and requirements relating to examination of
tested joints have been simplified and references to specific technologies or materials have been
removed;
– Annexes B, C and D have been added to assist in full and accurate identification of test cable,
accessories and connectors for inclusion in test reports.
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.
– 5 – EN 50393:2015
1 Scope
This European Standard details the performance requirements and the test methods for type testing of
cable accessories for use with power distribution cables of rated voltage 0,6/1,0 (1,2) kV as defined in
HD 603 or other relevant cable standards.
Cable accessories covered by this European Standard include joints, stop ends and outdoor
terminations for extruded solid dielectric insulated cables and transition joints between extruded solid
dielectric insulated and impregnated paper insulated cables. Joints, stop ends and outdoor
terminations for impregnated paper insulated cables are not included.
The service operating conditions of accessories should be compatible with the service operating
conditions of cables on which they are to be installed.
Accessories for special applications such as submarine, shipboard, explosive or seismic
environments, or where specified fire performance characteristics are required, are not included.
NOTE 1 This European Standard does not invalidate existing approvals of products achieved on the basis of
national standards and specifications and/or the demonstration of satisfactory service performance. However,
products approved according to such national standards or specifications cannot directly claim approval to this
European standard.
NOTE 2 It may be possible, subject to agreement between supplier and purchaser, and/or the relevant
conformity assessment body, to demonstrate that conformity to the earlier standard can be used to claim
conformity to this European Standard, provided an assessment is made of any additional type testing that may
need to be carried out. Any such additional testing that is part of a sequence of testing cannot be done separately.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 61180-1:1994, High-voltage test techniques for low-voltage equipment – Part 1: Definitions, test
and procedure requirements (IEC 61180-1:1992)
EN 61238-1, Compression and mechanical connectors for power cables for rated voltages up to 36 kV
(U = 42 kV) – Part 1: Test methods and requirements (IEC 61238-1)
m
HD 603, Distribution cables of rated voltage 0,6/1 kV
IEC 60050-461, International Electrotechnical Vocabulary – Chapter 461: Electric cables
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-461 and the following
apply.
3.1
joint
accessory suitable for use in air or underground which makes a connection between two or more
insulated power cables to form a continuous circuit
3.2
type I joint
joint where impact withstand, impulse voltage withstand and metallic screen short-circuit current
withstand tests are not required
3.3
type II joint
joint tested for impact withstand but not for impulse voltage withstand or metallic screen short-circuit
current withstand
3.4
type III joint
joint tested for impulse voltage withstand and metallic screen short-circuit current withstand but not for
impact withstand
3.5
transition joint
accessory making a connection between cables having extruded solid dielectric insulation and
impregnated paper insulation
3.6
stop end
accessory providing a means of insulating the end of an energised cable
3.7
type I stop end
stop end where impact withstand and impulse voltage withstand tests are not required
3.8
type II stop end
stop end tested for impact withstand but not for impulse voltage withstand
3.9
type III stop end
stop end tested for impulse voltage withstand but not for impact withstand
3.10
cable crutch
position at which the laid up cores of a multicore cable separate into individual cores
3.11
outdoor termination
termination intended for use where it is directly exposed to either solar radiation or weathering or both
3.12
type I termination
termination where impulse voltage withstand is not required
3.13
type II termination
termination tested for impulse voltage withstand
3.14
connector
device to connect cable conductors together
– 7 – EN 50393:2015
3.15
compression (crimp) connector
connector in which electrical connection is made by deformation or reshaping of the barrel around the
cable conductor
3.16
mechanical connector
connector in which electrical connection is made by pressure applied using screws or bolts
3.17
multi-polar connector
connector with the facility to connect conductors of two or more phases within one body and having
electrical insulation between phases
3.18
IPC – Insulation Piercing Connector
connector in which electrical contact with the conductor is made by metallic protrusions which pierce
the insulation of the cable core
[SOURCE: IEV 461-11-08]
3.19
product family
group of products to be considered to have the same design criteria, the same insulation material
characteristics, the same installation technology and the same connector technology
3.20
lug
metallic device to connect a cable conductor to other electrical equipment
[SOURCE: IEV 461-17-01]
4 Components
4.1 Connectors
Conductor connectors used with joints and terminations shall comply with EN 61238-1, where
applicable, or with another relevant performance standard. Connectors are considered integral
components of accessories and are subject to compliance extensions and limitations detailed in 6.3.
Connectors for circumferential conductors comprising metal wires that are designed to carry neutral or
induced current shall meet the electrical requirements of EN 61238-1, where applicable, or those of
another relevant performance standard.
4.2 Materials
Component material characterization, either by ‘fingerprinting’ or by type testing, is not a prerequisite
for compliance with this performance standard.
If material characterization by type testing is required for components included in the test sample kits,
EN 60455-3-8 should be used for resins, and the relevant parts of EN 60684 and EN 62677 for
respectively heat-shrink tubing or moulded components if applicable. For “fingerprinting” the
appropriate part of HD 631 should be used.
5 Electrical characteristics
5.1 Rated voltage
The rated voltage of the joints, stop ends and outdoor terminations shall be
U /UU( ) = 0,6 / 1,0 (1, 2) kV
0 m
Where
U is the rated power frequency voltage between phase conductor and earth or metallic screen for
which the cable accessory is designed;
U is the rated power frequency voltage between phase conductors for which the cable accessory
is designed;
U is the maximum value of the highest system voltage between phase conductors for which the
m
cable accessory may be used.
5.2 Current rating
The continuous current rating of a joint or termination shall be in accordance with the appropriate
cable(s) specified in HD 603 or other relevant cable standard.
6 Range of compliance
6.1 General
Compliance will be gained for a product family of the same design and materials by successfully
completing the appropriate test sequence in Tables 3, 4 or 5 on the smallest and the largest accessory
in the family. In the case of joints and outdoor terminations, the smallest and largest accessory shall
each be tested with the smallest and largest specified cable conductor cross-sections (total 4
samples). Stop-ends shall be tested with the smallest and largest conductor cross-sections (2
samples).
The range of compliance will include these accessories and the intermediate sizes within the family.
The number of test samples is shown in Tables 6 to 9. Successful testing with only one cable
conductor cross-section shall give compliance for that cross-section only.
6.2 Cables
6.2.1 Compliance is restricted to the use of the accessories on the same cable type (construction
and materials) as used in the tests, subject to the permitted extensions given in 6.2.2 to 6.2.5.
6.2.2 Compliance shall extend to the use of the accessories with cables having different conductor
material or construction provided that the connectors used in the tests are compliant with 4.1.
6.2.3 Compliance gained for accessories tested on cable with shaped conductors shall extend to the
use of the same accessories on cables with circular conductors, subject to the restrictions of 4.1 and
6.3. The converse shall not apply.
6.2.4 Compliance shall extend to use of the accessories with cables having conductor insulation
different from that of the test cables in accordance with Table 1.
– 9 – EN 50393:2015
Table 1 – Summary of compliance with different cable insulations
Cable insulation Range of compliance
XLPE XLPE, EPR, PVC
EPR EPR, PVC
PVC PVC
Paper Paper
IPC type connectors shall have been tested on all of the conductor insulation types for which range
extension is required.
6.2.5 Compliance gained for accessories tested on cable without longitudinal water-blocking shall
extend to their use on water-blocked cable that is otherwise of the same design and materials. The
converse shall not apply.
6.2.6 Compliance gained for accessories with a connector tested on cable with longitudinal water-
blocked conductors shall extend to their use on cable with non-water-blocked conductor. The
converse shall not apply.
6.2.7 Compliance gained for an accessory shall be extended to the use of the same accessory on
cables of the same design and materials but with fewer cores.
6.3 Connectors for joints
Compliance gained for joints shall be restricted to the use of the same conductor connectors as those
used in the tests, together with other connectors meeting the requirement of 4.1 and falling within the
extension limitations detailed in Table 2. The extensions permitted in Table 2 are based on
geometrical considerations only and do not imply any similarity or difference in connector
performance.
Table 2 – Compliance extension for conductor connectors in joints (based on geometrical
considerations)
Connector type used in tests Compliance extension to Compliance extension to
connectors of the same type connectors of other types
Cylindrical shape straight
connector No extension
(compression or mechanical)
Cylindrical shape straight
Non-cylindrical shape straight
connectors with equal or
Connectors with equal or
connector
smaller length and envelope
smaller length and envelope
(compression or mechanical)
a
diameter
diameter
Branch connector No extension
Multi-polar straight connector No extension
Multi-polar branch connector No extension
a
‘envelope diameter’ is the circle diameter, with its plane perpendicular to the main cable conductor, that includes all
metallic parts of the connector, including any projecting bolts.
Figure 1 – Example of envelope diameter
6.4 Water immersion depth
The standard water immersion depth for tests on joints and stop-ends is 1 m (gauge pressure 10 kPa
(0,1 bar)). For special applications and buried environments subject to a high water table or prone to
flooding, this head of water may be considered insufficient to confirm the satisfactory performance of
seals preventing the entry of water. In such cases, the test sequence of Tables 3 and 4 may be
performed with an increased water head of 10 m (gauge pressure 100 kPa (1,0 bar)). Testing at a
single water head will achieve compliance for that water head only. Testing at both 1 m and 10 m
water heads will achieve compliance for those water heads and all intermediate values.
6.5 Transition joints
Compliance gained for transition joints shall extend to joints of the same design with an alternative
type of solid dielectric cable provided that
– the paper insulated cable is of the same design, construction and materials as that used in the
tests, and
– prior compliance has been gained for the use of the alternative solid dielectric cable in straight or
branch joints as appropriate.
7 Type tests
7.1 General
Written reports on type tests proving compliance with this European Standard shall be made available
by the supplier. The principal details of the test arrangements shall be given in the test report,
including details of cable construction (refer to Annex B), accessory test samples (refer to Annex C)
and conductor connectors (refer to Annex D). Information in the report should be supported by
photographs where relevant.
The test reports shall be signed by a representative of the organization carrying out the tests. This
may be the manufacturer, supplier or a recognized certification body.
Should a cable fail beyond any part of an accessory, the test shall be declared void without
discrediting the accessory. Tests may be repeated using a new accessory (reverting to the beginning
of the test sequence) or alternatively by repair of the cable (continuing testing from the point of
suspension).
– 11 – EN 50393:2015
7.2 Test samples
The number of samples required for each test sequence shall be in accordance with 6.1 and Tables 6
to 9.
Cables used for testing shall comply with HD 603 or other relevant cable standards.
Accessories shall be assembled in the manner specified in the supplier's installation instructions, using
the components supplied in the kit. A joint designed for crossed cores shall be so assembled. All
assembly instructions shall be included with the test report.
Neither the cable nor the accessories shall be subjected to any form of conditioning not specified in
the installation instructions.
Relevant details regarding the test installation shall be recorded in the test report for future reference
and to ensure repeatability of the test regime.
7.3 Sequence of tests
The test sequence shall be in the order given in Table 3 to Table 5, as appropriate for the accessory
being tested.
Table 3 – Test sequence for joints for solid extruded dielectric insulated cables
and for transition joints between solid extruded dielectric insulated cables
and impregnated paper insulated cables
Test Subcla Samples Requirements
a
use Type of joints
I II III
A1/B1 A1/B1 A1/B1 A2/B2
Impulse voltage withstand at 8.2 - - x - No failure
ambient temperature
AC voltage withstand (in air) 8.3 x x x - No failure
Insulation resistance (in air) 8.4 x x x - Insulation resistance ≥ 50 MΩ
Impact at ambient 8.5 - x - - -
temperature
Insulation resistance 8.4 - x - - Insulation resistance ≥ 50 MΩ
(immersed)
Heating cycle in air 8.6 x x x - 63 cycles
b
Heating cycle in water 8.6 - x - - 9 cycles
b
Insulation resistance 8.4 - x - - Insulation resistance ≥ 50 MΩ
(immersed)
Heating cycle in water 8.6 x x x - 63 cycles
AC voltage withstand 8.3 x x x - No failure
(immersed)
Insulation resistance 8.4 x x x - Insulation resistance ≥ 50 MΩ
(immersed)
Examination 8.8 x x x - To be recorded
c
Screen short-circuit 8.9 - - - x The fuse shall operate before
an open circuit develops
between the test pin and the
screen.
a
For the definitions of Types I, II and III, see Clause 3. For the explanation of A1/B1 and A2/B2, see Tables 6 and 7.
b
These tests are applicable only to joints made on non-water-blocked cables with overall metallic screen or armour.
c
This test is applicable only to joints incorporating an overall metallic screen and is subject to agreement.
– 13 – EN 50393:2015
Table 4 – Test sequence for stop ends on solid extruded dielectric insulated cables
Test Subcla Samples Requirements
a
use Type of stop end
I II III
C1 C1 C1
Impulse voltage withstand at 8.2 - - x No failure
ambient temperature
AC voltage withstand (in air) 8.3 x x x No failure
Insulation resistance (in air) 8.4 x x x Insulation resistance ≥ 50 MΩ
Impact at ambient 8.5 - x -
temperature
AC voltage (immersed) 8.3 - x - No failure
Insulation resistance 8.4 - x - Insulation resistance ≥ 50 MΩ
(immersed)
Immersion (21 days) 8.7 x x x
AC voltage withstand 8.3 x x x No failure
(immersed)
Insulation resistance 8.4 x x x Insulation resistance ≥ 50 MΩ
(immersed)
Examination 8.8 x x x To be recorded
a
For the definitions of Types I, II and III, see Clause 3. For the explanation of C1, see Table 8.
Table 5 – Test sequence for outdoor terminations
on solid extruded dielectric insulated cables
Test Subcl Samples Requirements
a
ause Type of termination
I II
D1 D1
Impulse voltage withstand at 8.2 - x No failure nor flashover
ambient temperature
AC voltage withstand (in air) 8.3 x x No failure
Insulation resistance (in air) 8.4 x x Insulation resistance ≥ 50 MΩ
Heating cycle in air 8.6 x x 63 cycles
Heating cycle in water 8.6 x x 63 cycles
(C
...
SLOVENSKI STANDARD
01-september-2015
1DGRPHãþD
SIST EN 50393:2006
3UHVNXVQHPHWRGHLQ]DKWHYH]DSULERUNLVHXSRUDEOMDQDGLVWULEXFLMVNLKNDEOLK]D
QD]QDþHQHQDSHWRVWL N9
Test methods and requirements for accessories for use on distribution cables of rated
voltage 0,6/1,0 (1,2) kV
Prüfverfahren und Prüfanforderungen für die Garnituren von Verteilerkabeln mit einer
Nennspannung von 0,6/1,0 (1,2) kV
Méthodes et prescriptions d'essai pour les accessoires de câbles de distribution de
tension assignée 0,6/1,0 (1,2) kV
Ta slovenski standard je istoveten z: EN 50393:2015
ICS:
29.120.20 Spojni elementi Connecting devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50393
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2015
ICS 29.120.20 Supersedes EN 50393:2006
English Version
Test methods and requirements for accessories for use on
distribution cables of rated voltage 0,6/1,0 (1,2) kV
Méthodes et prescriptions d'essai pour les accessoires de Prüfverfahren und Prüfanforderungen für die Garnituren von
câbles de distribution de tension assignée 0,6/1,0 (1,2) kV Verteilerkabeln mit einer Nennspannung von 0,6/1,0 (1,2)
kV
This European Standard was approved by CENELEC on 2014-12-08. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50393:2015 E
Contents
Foreword.4
1 Scope .5
2 Normative references .5
3 Terms and definitions .7
4 Components .8
4.1 Connectors . 8
4.2 Materials . 9
5 Electrical characteristics . 9
5.1 Rated voltage . 9
5.2 Current rating . 9
6 Range of compliance . 9
6.1 General . 9
6.2 Cables . 9
6.3 Connectors for joints . 10
6.4 Water immersion depth. 11
6.5 Transition joints . 11
7 Type tests . 11
7.1 General . 11
7.2 Test samples . 12
7.3 Sequence of tests . 12
8 Test methods . 15
8.1 General . 15
8.2 Impulse voltage withstand test at ambient temperature. 16
8.3 AC voltage withstand test . 16
8.4 Insulation resistance test . 17
8.5 Impact test at ambient temperature . 17
8.6 Heating cycle test . 18
8.7 Immersion test – test installation . 19
8.8 Examination . 19
8.9 Metallic screen short-circuit current withstand test . 20
Annex A (informative) Determination of cable conductor temperature . 29
Annex B (informative) Identification of test cable . 34
Annex C (informative) Identification of accessory test samples . 35
Annex D (informative) Identification of connector . 36
Bibliography . 37
Figures
Figure 1 – Example of envelope diameter . 11
Figure 2 – Typical arrangement for the impact test for joints at ambient temperature. 21
Figure 3 – Typical arrangement for the heating cycle for joints in air . 22
Figure 4 – Typical arrangement for the heating cycle test for joints in water . 22
Figure 5 – Typical arrangement for the heating cycle test for outdoor terminations in water . 23
Figure 6 – Method of connection of three-phase cables for the heating cycle test on a straight
joint . 24
– 3 – EN 50393:2015
Figure 7 – Method of connection of three-phase cables for the heating cycle test on a branch joint
where the main cable conductor cross-section is greater than 50 mm² and the branch cable
conductor cross-section is less than or equal to 50 mm² . 25
Figure 8 – Method of connection of three-phase main and branch cables of equal conductor
cross-section for the heating cycle test on a branch joint . 26
Figure 9 – Method of connection of three-phase main and branch cables of unequal conductor
cross-section for the heating cycle test on a branch joint . 27
Figure 10 – Typical heating cycle . 28
Figure 11 – Arrangement for the screen short-circuit test . 28
Figure A.1 – Arrangement for the cable calibration test . 30
Figure A.2 – Variation of θ with θ for various heating currents . 33
c st
Tables
Table 1 – Summary of compliance with different cable insulations. 10
Table 2 – Compliance extension for conductor connectors in joints . 10
Table 3 – Test sequence for joints for solid extruded dielectric insulated cables and for transition
joints between solid extruded dielectric insulated cables and impregnated paper insulated
cables . 12
Table 4 – Test sequence for stop ends on solid extruded dielectric insulated cables . 13
Table 5 – Test sequence for outdoor terminations on solid extruded dielectric insulated cables . 13
Table 6 – Number of test samples and conductor cross-section: straight joints . 14
Table 7 – Number of test samples and conductor cross-section: branch joints . 14
Table 8 – Number of test samples and conductor cross-section: stop ends . 15
Table 9 – Number of test samples and conductor cross-section: outdoor terminations . 15
Foreword
This document (EN 50393:2015) has been prepared by CLC/TC 20 “Electric cables”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2015-12-08
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2017-12-08
conflicting with this document have to
be withdrawn
This document supersedes EN 50393:2006.
– in Clause 1 'Scope', the revised statement referring to 'existing approvals' has been inserted;
– in Clause 3 'Definitions', definitions of stop end types have been revised to align with those of
joints, and definitions of 'rigid' and 'non-rigid' joints have been removed;
– in Clause 6 'Range of compliance', the numbers of joint and termination test samples have been
increased (see also Table 6), compliance restriction and extension with regard to different cable
designs have been clarified, and compliance restrictions and extensions relating to conductor
connectors have been inserted and shown in a new Table 2;
– in 7.3, Table 3, joints of Type II are subject to a new test involving 9 heating cycles in water
without oversheath damage (see also 8.6.2);
– in 7.3, Tables 3, 4 and 5, the footnotes referring to examination of tested accessories have been
removed;
– in Clause 8 'Test methods', the AC voltage withstand test procedure has been simplified and
clarified, references to 'rigid' and 'non-rigid' joints have been removed, reference to the 9 cycle
test for Type II joints (Table 3) has been inserted, and requirements relating to examination of
tested joints have been simplified and references to specific technologies or materials have been
removed;
– Annexes B, C and D have been added to assist in full and accurate identification of test cable,
accessories and connectors for inclusion in test reports.
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.
– 5 – EN 50393:2015
1 Scope
This European Standard details the performance requirements and the test methods for type testing of
cable accessories for use with power distribution cables of rated voltage 0,6/1,0 (1,2) kV as defined in
HD 603 or other relevant cable standards.
Cable accessories covered by this European Standard include joints, stop ends and outdoor
terminations for extruded solid dielectric insulated cables and transition joints between extruded solid
dielectric insulated and impregnated paper insulated cables. Joints, stop ends and outdoor
terminations for impregnated paper insulated cables are not included.
The service operating conditions of accessories should be compatible with the service operating
conditions of cables on which they are to be installed.
Accessories for special applications such as submarine, shipboard, explosive or seismic
environments, or where specified fire performance characteristics are required, are not included.
NOTE 1 This European Standard does not invalidate existing approvals of products achieved on the basis of
national standards and specifications and/or the demonstration of satisfactory service performance. However,
products approved according to such national standards or specifications cannot directly claim approval to this
European standard.
NOTE 2 It may be possible, subject to agreement between supplier and purchaser, and/or the relevant
conformity assessment body, to demonstrate that conformity to the earlier standard can be used to claim
conformity to this European Standard, provided an assessment is made of any additional type testing that may
need to be carried out. Any such additional testing that is part of a sequence of testing cannot be done separately.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 61180-1:1994, High-voltage test techniques for low-voltage equipment – Part 1: Definitions, test
and procedure requirements (IEC 61180-1:1992)
EN 61238-1, Compression and mechanical connectors for power cables for rated voltages up to 36 kV
(U = 42 kV) – Part 1: Test methods and requirements (IEC 61238-1)
m
HD 603, Distribution cables of rated voltage 0,6/1 kV
IEC 60050-461, International Electrotechnical Vocabulary – Chapter 461: Electric cables
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-461 and the following
apply.
3.1
joint
accessory suitable for use in air or underground which makes a connection between two or more
insulated power cables to form a continuous circuit
3.2
type I joint
joint where impact withstand, impulse voltage withstand and metallic screen short-circuit current
withstand tests are not required
3.3
type II joint
joint tested for impact withstand but not for impulse voltage withstand or metallic screen short-circuit
current withstand
3.4
type III joint
joint tested for impulse voltage withstand and metallic screen short-circuit current withstand but not for
impact withstand
3.5
transition joint
accessory making a connection between cables having extruded solid dielectric insulation and
impregnated paper insulation
3.6
stop end
accessory providing a means of insulating the end of an energised cable
3.7
type I stop end
stop end where impact withstand and impulse voltage withstand tests are not required
3.8
type II stop end
stop end tested for impact withstand but not for impulse voltage withstand
3.9
type III stop end
stop end tested for impulse voltage withstand but not for impact withstand
3.10
cable crutch
position at which the laid up cores of a multicore cable separate into individual cores
3.11
outdoor termination
termination intended for use where it is directly exposed to either solar radiation or weathering or both
3.12
type I termination
termination where impulse voltage withstand is not required
3.13
type II termination
termination tested for impulse voltage withstand
3.14
connector
device to connect cable conductors together
– 7 – EN 50393:2015
3.15
compression (crimp) connector
connector in which electrical connection is made by deformation or reshaping of the barrel around the
cable conductor
3.16
mechanical connector
connector in which electrical connection is made by pressure applied using screws or bolts
3.17
multi-polar connector
connector with the facility to connect conductors of two or more phases within one body and having
electrical insulation between phases
3.18
IPC – Insulation Piercing Connector
connector in which electrical contact with the conductor is made by metallic protrusions which pierce
the insulation of the cable core
[SOURCE: IEV 461-11-08]
3.19
product family
group of products to be considered to have the same design criteria, the same insulation material
characteristics, the same installation technology and the same connector technology
3.20
lug
metallic device to connect a cable conductor to other electrical equipment
[SOURCE: IEV 461-17-01]
4 Components
4.1 Connectors
Conductor connectors used with joints and terminations shall comply with EN 61238-1, where
applicable, or with another relevant performance standard. Connectors are considered integral
components of accessories and are subject to compliance extensions and limitations detailed in 6.3.
Connectors for circumferential conductors comprising metal wires that are designed to carry neutral or
induced current shall meet the electrical requirements of EN 61238-1, where applicable, or those of
another relevant performance standard.
4.2 Materials
Component material characterization, either by ‘fingerprinting’ or by type testing, is not a prerequisite
for compliance with this performance standard.
If material characterization by type testing is required for components included in the test sample kits,
EN 60455-3-8 should be used for resins, and the relevant parts of EN 60684 and EN 62677 for
respectively heat-shrink tubing or moulded components if applicable. For “fingerprinting” the
appropriate part of HD 631 should be used.
5 Electrical characteristics
5.1 Rated voltage
The rated voltage of the joints, stop ends and outdoor terminations shall be
U /UU( ) = 0,6 / 1,0 (1, 2) kV
0 m
Where
U is the rated power frequency voltage between phase conductor and earth or metallic screen for
which the cable accessory is designed;
U is the rated power frequency voltage between phase conductors for which the cable accessory
is designed;
U is the maximum value of the highest system voltage between phase conductors for which the
m
cable accessory may be used.
5.2 Current rating
The continuous current rating of a joint or termination shall be in accordance with the appropriate
cable(s) specified in HD 603 or other relevant cable standard.
6 Range of compliance
6.1 General
Compliance will be gained for a product family of the same design and materials by successfully
completing the appropriate test sequence in Tables 3, 4 or 5 on the smallest and the largest accessory
in the family. In the case of joints and outdoor terminations, the smallest and largest accessory shall
each be tested with the smallest and largest specified cable conductor cross-sections (total 4
samples). Stop-ends shall be tested with the smallest and largest conductor cross-sections (2
samples).
The range of compliance will include these accessories and the intermediate sizes within the family.
The number of test samples is shown in Tables 6 to 9. Successful testing with only one cable
conductor cross-section shall give compliance for that cross-section only.
6.2 Cables
6.2.1 Compliance is restricted to the use of the accessories on the same cable type (construction
and materials) as used in the tests, subject to the permitted extensions given in 6.2.2 to 6.2.5.
6.2.2 Compliance shall extend to the use of the accessories with cables having different conductor
material or construction provided that the connectors used in the tests are compliant with 4.1.
6.2.3 Compliance gained for accessories tested on cable with shaped conductors shall extend to the
use of the same accessories on cables with circular conductors, subject to the restrictions of 4.1 and
6.3. The converse shall not apply.
6.2.4 Compliance shall extend to use of the accessories with cables having conductor insulation
different from that of the test cables in accordance with Table 1.
– 9 – EN 50393:2015
Table 1 – Summary of compliance with different cable insulations
Cable insulation Range of compliance
XLPE XLPE, EPR, PVC
EPR EPR, PVC
PVC PVC
Paper Paper
IPC type connectors shall have been tested on all of the conductor insulation types for which range
extension is required.
6.2.5 Compliance gained for accessories tested on cable without longitudinal water-blocking shall
extend to their use on water-blocked cable that is otherwise of the same design and materials. The
converse shall not apply.
6.2.6 Compliance gained for accessories with a connector tested on cable with longitudinal water-
blocked conductors shall extend to their use on cable with non-water-blocked conductor. The
converse shall not apply.
6.2.7 Compliance gained for an accessory shall be extended to the use of the same accessory on
cables of the same design and materials but with fewer cores.
6.3 Connectors for joints
Compliance gained for joints shall be restricted to the use of the same conductor connectors as those
used in the tests, together with other connectors meeting the requirement of 4.1 and falling within the
extension limitations detailed in Table 2. The extensions permitted in Table 2 are based on
geometrical considerations only and do not imply any similarity or difference in connector
performance.
Table 2 – Compliance extension for conductor connectors in joints (based on geometrical
considerations)
Connector type used in tests Compliance extension to Compliance extension to
connectors of the same type connectors of other types
Cylindrical shape straight
connector No extension
(compression or mechanical)
Cylindrical shape straight
Non-cylindrical shape straight
connectors with equal or
Connectors with equal or
connector
smaller length and envelope
smaller length and envelope
(compression or mechanical)
a
diameter
diameter
Branch connector No extension
Multi-polar straight connector No extension
Multi-polar branch connector No extension
a
‘envelope diameter’ is the circle diameter, with its plane perpendicular to the main cable conductor, that includes all
metallic parts of the connector, including any projecting bolts.
Figure 1 – Example of envelope diameter
6.4 Water immersion depth
The standard water immersion depth for tests on joints and stop-ends is 1 m (gauge pressure 10 kPa
(0,1 bar)). For special applications and buried environments subject to a high water table or prone to
flooding, this head of water may be considered insufficient to confirm the satisfactory performance of
seals preventing the entry of water. In such cases, the test sequence of Tables 3 and 4 may be
performed with an increased water head of 10 m (gauge pressure 100 kPa (1,0 bar)). Testing at a
single water head will achieve compliance for that water head only. Testing at both 1 m and 10 m
water heads will achieve compliance for those water heads and all intermediate values.
6.5 Transition joints
Compliance gained for transition joints shall extend to joints of the same design with an alternative
type of solid dielectric cable provided that
– the paper insulated cable is of the same design, construction and materials as that used in the
tests, and
– prior compliance has been gained for the use of the alternative solid dielectric cable in straight or
branch joints as appropriate.
7 Type tests
7.1 General
Written reports on type tests proving compliance with this European Standard shall be made available
by the supplier. The principal details of the test arrangements shall be given in the test report,
including details of cable construction (refer to Annex B), accessory test samples (refer to Annex C)
and conductor connectors (refer to Annex D). Information in the report should be supported by
photographs where relevant.
The test reports shall be signed by a representative of the organization carrying out the tests. This
may be the manufacturer, supplier or a recognized certification body.
Should a cable fail beyond any part of an accessory, the test shall be declared void without
discrediting the accessory. Tests may be repeated using a new accessory (reverting to the beginning
of the test sequence) or alternatively by repair of the cable (continuing testing from the point of
suspension).
– 11 – EN 50393:2015
7.2 Test samples
The number of samples required for each test sequence shall be in accordance with 6.1 and Tables 6
to 9.
Cables used for testing shall comply with HD 603 or other relevant cable standards.
Accessories shall be assembled in the manner specified in the supplier's installation instructions, using
the components supplied in the kit. A joint designed for crossed cores shall be so assembled. All
assembly instructions shall be included with the test report.
Neither the cable nor the accessories shall be subjected to any form of conditioning not specified in
the installation instructions.
Relevant details regarding the test installation shall be recorded in the test report for future reference
and to ensure repeatability of the test regime.
7.3 Sequence of tests
The test sequence shall be in the order given in Table 3 to Table 5, as appropriate for the accessory
being tested.
Table 3 – Test sequence for joints for solid extruded dielectric insulated cables
and for transition joints between solid extruded dielectric insulated cables
and impregnated paper insulated cables
Test Subcla Samples Requirements
a
use Type of joints
I II III
A1/B1 A1/B1 A1/B1 A2/B2
Impulse voltage withstand at 8.2 - - x - No failure
ambient temperature
AC voltage withstand (in air) 8.3 x x x - No failure
Insulation resistance (in air) 8.4 x x x - Insulation resistance ≥ 50 MΩ
Impact at ambient 8.5 - x - - -
temperature
Insulation resistance 8.4 - x - - Insulation resistance ≥ 50 MΩ
(immersed)
Heating cycle in air 8.6 x x x - 63 cycles
b
Heating cycle in water 8.6 - x - - 9 cycles
b
Insulation resistance 8.4 - x - - Insulation resistance ≥ 50 MΩ
(immersed)
Heating cycle in water 8.6 x x x - 63 cycles
AC voltage withstand 8.3 x x x - No failure
(immersed)
Insulation resistance 8.4 x x x - Insulation resistance ≥ 50 MΩ
(immersed)
Examination 8.8 x x x - To be recorded
c
Screen short-circuit 8.9 - - - x The fuse shall operate before
an open circuit develops
between the test pin and the
screen.
a
For the definitions of Types I, II and III, see Clause 3. For the explanation of A1/B1 and A2/B2, see Tables 6 and 7.
b
These tests are applicable only to joints made on non-water-blocked cables with overall metallic screen or armour.
c
This test is applicable only to joints incorporating an overall metallic screen and is subject to agreement.
– 13 – EN 50393:2015
Table 4 – Test sequence for stop ends on solid extruded dielectric insulated cables
Test Subcla Samples Requirements
a
use Type of stop end
I II III
C1 C1 C1
Impulse voltage withstand at 8.2 - - x No failure
ambient temperature
AC voltage withstand (in air) 8.3 x x x No failure
Insulation resistance (in air) 8.4 x x x Insulation resistance ≥ 50 MΩ
Impact at ambient 8.5 - x -
temperature
AC voltage (immersed) 8.3 - x - No failure
Insulation resistance 8.4 - x - Insulation resistance ≥ 50 MΩ
(immersed)
Immersion (21 days) 8.7 x x x
AC voltage withstand 8.3 x x x No failure
(immersed)
Insulation resistance 8.4 x x x Insulation resistance ≥ 50 MΩ
(immersed)
Examination 8.8 x x x To be recorded
a
For the definitions of Types I, II and III, see Clause 3. For the explanation of C1, see Table 8.
Table 5 – Test sequence for outdoor terminations
on solid extruded dielectric insulated cables
Test Subcl Samples Requirements
a
ause Type of termination
I II
D1 D1
Impulse voltage withstand at 8.2 - x No failure nor flashover
ambient temperature
AC voltage withstand (in air) 8.3 x x No failure
Insulation resistance (in air) 8.4 x x Insulation resistance ≥ 50 MΩ
Heating cycle in air 8.6 x x 63 cycles
Heating cycle in water 8.6 x x 63 cycles
(Crutch immers
...
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