SIST EN 61442:2005

SLOVENSKI SIST EN 61442:2005

STANDARD
december 2005
Preskusne metode za pribor energetskih kablov za napetosti od 6 kV (Um =
7,2 kV) do 36 kV (Um = 42 kV)
Test methods for accessories for power cables with rated voltages from 6 kV (Um =
7,2 kV) up to 36 kV (Um = 42 kV) (IEC 61442:2005, modified)
ICS 29.060.20 Referenčna številka
SIST EN 61442:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD EN 61442
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2005

ICS 19.080; 290.060.20 Supersedes HD 628 S1:1996 + A1:2001


English version


Test methods for accessories for power cables with rated voltages
from 6 kV (U = 7,2 kV) up to 36 kV (U = 42 kV)
m m
(IEC 61442:2005, modified)


Méthodes d'essais des accessoires  Prüfverfahren für
de câbles d'énergie de tensions Starkstromkabelgarnituren mit einer
assignées de 6 kV (U = 7,2 kV) Nennspannung von 6 kV (U = 7,2 kV)
m m
à 36 kV (U = 42 kV) bis 36 kV (U = 42 kV)
m m
(CEI 61442:2005, modifiée) (IEC 61442:2005, modifiziert)






This European Standard was approved by CENELEC on 2005-03-01. 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 61442:2005 E

---------------------- Page: 2 ----------------------

EN 61442:2005 - 2 -
Foreword
The text of document 20/748/FDIS, future edition 2 of IEC 61442, prepared by IEC TC 20, Electric
cables, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61442 on 2005-03-01.
A draft amendment, prepared by the Technical Committee CENELEC TC 20, Electric cables, was
submitted to the formal vote and was approved by CENELEC for inclusion into EN 61442 on
2005-03-01.
This European Standard supersedes HD 628 S1:1996 + A1:2001.
In comparison with HD 628, the impact test at low temperature has been deleted.
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) 2006-01-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61442:2005 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
Title
Amend the title to show the following upper voltage limit:
“… with rated voltages from 6 kV (U = 7,2 kV) up to 36 kV (U = 42 kV)”
m m
1 Scope
Amend the voltage reference in paragraph 1 to read:
“… with rated voltages from 6 kV (U = 7,2 kV) up to 36 kV (U = 42 kV), …”
m m
__________

---------------------- Page: 3 ----------------------

- 3 - EN 61442:2005
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
1)
IEC 60055-1 - Paper-insulated metal-sheathed cables for - -
rated voltages up to 18/30 kV (with copper
or aluminium conductors and excluding
gas-pressure and oil-filled cables)
Part 1: Tests on cables and their
accessories

IEC 60060-1 1989 High-voltage test techniques HD 588.1 S1 1991
+ corr. March 1990 Part 1: General definitions and test
requirements

IEC 60230 1966 Impulse tests on cables and their EN 60230 2002
accessories

IEC 60270 2000 High-voltage test techniques - Partial EN 60270 2001
discharge measurements

IEC 60502-2 2005 Power cables with extruded insulation and - -
their accessories for rated voltages from 1
kV (U = 1,2 kV) up to 30 kV (U = 36 kV)
m m
Part 2: Cables for rated voltages from 6 kV
(U = 7,2 kV) up to 30 kV (U = 36 kV)
m m

2)
IEC 60811-1-2 1985 Insulating and sheathing materials of EN 60811-1-2 1995
electric cables - Common test methods
Part 1-2: General application - Thermal
ageing methods

IEC 60885-3 1988 Electrical test methods for electric cables EN 60885-3 2003
Part 3: Test methods for partial discharge
measurements on lengths of extruded
power cables

IEC 60986 2000 Short-circuit temperature limites of electric - -
cables with rated voltagesf
from 6 kV (U = 7,2 kV) up to 30 kV
m
(U 36 kV)
m =


1)
Undated reference.
2)
EN 60811-1-2 includes corrigendum May 1988 + A1:1989 to IEC 60811-1-2:1985.

---------------------- Page: 4 ----------------------

EN 61442:2005 - 4 -
Publication Year Title EN/HD Year
IEC 61238-1 2003 Compression and mechanical connectors EN 61238-1 2003
(mod) for power cables for rated voltages up to
36 kV (U = 42 kV)
m
Part 1: Test methods and requirements

---------------------- Page: 5 ----------------------

NORME CEI
INTERNATIONALE IEC
61442
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2005-03
Méthodes d'essais des accessoires de câbles
d'énergie de tensions assignées
de 6 kV (U = 7,2 kV) à 30 kV (U = 36 kV)
m m
Test methods for accessories for power cables
with rated voltages
from 6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
© IEC 2005 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale PRICE CODE V
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

---------------------- Page: 6 ----------------------

61442 © IEC:2005 – 3 –
CONTENTS
FOREWORD .7
1 Scope.11
2 Normative references .11
3 Test installations and conditions .13
4 AC voltage tests .13
4.1 Dry test for all accessories .13
4.2 Wet test for outdoor terminations .13
4.3 Test in water for stop ends .15
5 DC voltage tests.15
5.1 Installation .15
5.2 Method.15
6 Impulse voltage tests.15
6.1 Installation .15
6.2 Method.15
6.3 Test at elevated temperature .15
7 Partial discharge test.17
7.1 Method.17
7.2 Test at elevated temperature .17
8 Tests at elevated temperature .17
8.1 Installation and connection .17
8.2 Measurement of temperature .17
9 Heating cycles voltage test .25
9.1 Installation .25
9.2 Test in air.25
9.3 Test in water .25
9.4 Immersion test for outdoor terminations .27
10 Thermal short-circuit test (screen) .27
10.1 Installation .27
10.2 Method.27
11 Thermal short-circuit test (conductor) .29
11.1 Installation .29
11.2 Method.29
12 Dynamic short-circuit test .31
12.1 Installation .31
12.2 Method.31
13 Humidity and salt fog tests.31
13.1 Apparatus .31
13.2 Installation .33
13.3 Method.33
14 Impact test at ambient temperature.33
15 Screen resistance measurement.37
15.1 Installation .37
15.2 Method.37

---------------------- Page: 7 ----------------------

61442 © IEC:2005 – 5 –
16 Screen leakage current measurement.37
16.1 Installation .37
16.2 Method.37
17 Screen fault current initiation test .39
17.1 Installation .39
17.2 Method.41
18 Operating force test.43
18.1 Installation .43
18.2 Method.43
19 Operating eye test .43
19.1 Installation .43
19.2 Method.43
20 Capacitive test point performance.45
20.1 Installation .45
20.2 Test method .45
Annex A (informative) Determination of the cable conductor .
temperature.47
Annex B (informative) Details of the test chamber and spray .
equipment for humidity and salt fog tests .57
Bibliography .61
Figure 1 – Terminations tested in air .19
Figure 2 – Joints tested in air.19
Figure 3 – Separable connectors tested in air .21
Figure 4 – Joints tested under water .21
Figure 5 – Separable connectors tested under water.23
Figure 6 – Outdoor terminations tested under water .23
Figure 7 – Heating cycle .25
Figure 8 – Typical impact test apparatus for joints.35
Figure 9 – Test arrangement for the screen leakage current measurement .39
Figure 10 – Test arrangement for screen fault current initiation test.41
Figure A.1 – Reference cable.49
Figure A.2 – Arrangement of the thermocouples.49
Figure A.3 – Current/temperatures curves.53

---------------------- Page: 8 ----------------------

61442 © IEC:2005 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEST METHODS FOR ACCESSORIES
FOR POWER CABLES WITH RATED VOLTAGES
FROM 6 kV (U = 7,2 kV) UP TO 30 kV (U = 36 kV)
m m
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 61442 has been prepared by IEC technical committee 20: Electric
cables.
This second edition of IEC 61442 cancels and replaces the first edition of IEC 61442,
published in 1997, and constitutes a technical revision.
Significant technical changes with respect to the previous edition are as follows:
a) a test in water has been added for stop ends;
b) the heating cycles voltage test has been revised to clarify testing in air and water;
c) the testing conditions for the short-circuit tests have been redefined;
d) additional information has been provided for testing separable connectors with a metallic
housing;

---------------------- Page: 9 ----------------------

61442 © IEC:2005 – 9 –
e) tests not required by IEC, i.e. an immersion test for outdoor terminations and an impact
test, have been included in order to have a common test method document with
CENELEC under the IEC/CLC Dresden agreement.
The text of this standard is based on the following documents:
FDIS Report on voting
20/748/FDIS 20/762/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
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

---------------------- Page: 10 ----------------------

61442 © IEC:2005 – 11 –
TEST METHODS FOR ACCESSORIES
FOR POWER CABLES WITH RATED VOLTAGES
FROM 6 kV (U = 7,2 kV) UP TO 30 kV (U = 36 kV)
m m
1 Scope
This International Standard specifies the test methods to be used for type testing accessories
for power cables with rated voltage from 3,6/6 (7,2) kV up to 18/30 (36) kV. Test methods are
specified for accessories for extruded and paper insulated cables according to IEC 60502-2
and IEC 60055-1 respectively.
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 amendments) applies.
IEC 60055-1: Paper-insulated metal-sheathed cables for rated voltages up to 18/30 kV (with
copper or aluminium conductors and excluding gas-pressure and oil-filled cables) – Part 1:
Tests on cables and their accessories
IEC 60060-1:1989, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60230:1966, Impulse tests on cables and their accessories
IEC 60270:2000, High-voltage test techniques – Partial discharge measurements
IEC 60502-2:2005, Power cables with extruded insulation and their accessories for rated
voltages from 1 kV (U = 1,2 kV) up to 30 kV (U = 36 kV) – Part 2: Cables for rated voltages
m m
from 6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
IEC 60811-1-2:1985, Common test methods for insulating and sheathing materials of electric
and optical cables – Part 1: Methods for general application – Section Two: Thermal ageing
methods
IEC 60885-3:1988, Electrical test methods for electric cables – Part 3: Test methods for
partial discharge measurements on lengths of extruded power cables
IEC 60986:2000, Short-circuit temperature limits of electric cables with rated voltages from
6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
IEC 61238-1:2003, Compression and mechanical connectors for power cables for rated
voltages up to 30 kV (U = 36 kV) – Part 1: Test methods and requirements
m

---------------------- Page: 11 ----------------------

61442 © IEC:2005 – 13 –
3 Test installations and conditions
3.1 The test methods described in this standard are intended to be used for type tests.
3.2 Test arrangements and the number of test samples are given in the relevant standard.
3.3 The test conditions are specified in Clauses 4 to 20 of this standard. When they are not,
they shall be as specified in the relevant standards.
3.4 Unless otherwise stated, the testing parameters and the requirements are given in the
relevant standard.
3.5 For transition joints (either extruded insulation to extruded insulation or extruded
insulation to paper insulation), the testing parameters (voltage and conductor temperature)
are those for the lower rated cable.
3.6 The tests shall be started not less than 24 h after the installation of the accessories on
the cable test loops, unless otherwise specified by the manufacturer. The time interval shall
be recorded in the test report.
3.7 Cable screens, and armour if any, shall be bonded and earthed at one end only to
prevent circulating currents.
3.8 All parts of an accessory which are normally earthed shall be connected to the cable
screen. Any supporting metalwork shall also be earthed.
3.9 Ambient temperature shall be (20 ± 15) °C.
3.10 Tap water shall be used for all tests in water.
4 AC voltage tests
4.1 Dry test for all accessories
4.1.1 Installation
The set(s) of accessories shall be erected with all associated metalwork and fittings. The
accessories shall be clean and dry before applying the test voltage.
4.1.2 Method
Unless otherwise specified, the test shall be made at ambient temperature, and the
procedure for voltage application shall be as specified in Section 5 of IEC 60060-1.
4.2 Wet test for outdoor terminations
4.2.1 Installation
The terminations shall be erected in a vertical position, unless they are to be specifically
installed in another orientation, with the relative spacing as under service conditions and
according to manufacturer's instructions.

---------------------- Page: 12 ----------------------

61442 © IEC:2005 – 15 –
4.2.2 Method
Unless otherwise specified, the wet test method is as described in 9.1 of IEC 60060-1, and
shall be carried out at ambient temperature.
4.3 Test in water for stop ends
4.3.1 Installation
The stop ends shall be installed in a water tank of such dimensions as to have a height of
+0,02
water of 1,00 m over their top surface, unless otherwise specified. The water shall be at
0
ambient temperature.
4.3.2 Method
Unless otherwise specified, the procedure for voltage application shall be as specified in
IEC 60060-1.
5 DC voltage tests
5.1 Installation
The set(s) of accessories shall be erected with all associated metalwork and fittings. The
accessories shall be clean and dry before applying the test voltage.
5.2 Method
A voltage of negative polarity shall be applied to the cable conductor.
The test shall be made at ambient temperature and the procedure for voltage application
shall be as specified in Section 4 of IEC 60060-1.
6 Impulse voltage tests
6.1 Installation
For preparation of the test installation, involving metal enclosures and terminal boxes,
reference shall be made to the relevant standard.
In the case of three-core accessories (such as three single-core terminations in an
enclosure), one phase shall be tested at a time, with the other two phases earthed.
6.2 Method
The test shall be conducted according to the procedure given in IEC 60230 (Clause 3 and
following).
6.3 Test at elevated temperature
Installation and the measurement of temperature are given in Clause 8 of this standard.
The cable conductor shall be heated and stabilized for at least 2 h at a temperature of
– 5 K to 10 K above the maximum cable conductor temperature in normal operation for
extruded insulation cables,

---------------------- Page: 13 ----------------------

61442 © IEC:2005 – 17 –
– 0 K to 5 K above the maximum cable conductor temperature in normal operation for paper
insulated cables,
before and during the impulse test.
7 Partial discharge test
This test is only required for accessories for extruded insulation single-core cables and three-
core cables with individually semi-conducting screened cores. It is not required for
accessories incorporating paper insulated cables.
7.1 Method
The test shall be conducted in accordance with IEC 60270 and IEC 60885-3.
The partial discharge shall be measured at the test voltage given in the relevant standard.
7.2 Test at elevated temperature
Installation and measurement of temperature are given in Clause 8 of this standard.
The cable conductor shall be heated and stabilized for at least 2 h at a temperature of 5 K to
10 K above the maximum cable conductor temperature in normal operation, before and
during the partial discharge test.
8 Tests at elevated temperature
8.1 Installation and connection
The accessories shall be erected, supported where necessary and provided with connections
to permit heating current to be circulated.
Where terminations or separable connectors are to be tested, the connection between either
lugs or bushings shall have an electrical cross-section equivalent to that of the cable
conductor.
Where branch joints are to be tested, only the main cable shall carry the heating current.
Three-core accesso
...