HD 629.2 S3:2024

SLOVENSKI STANDARD
01-marec-2024
Nadomešča:
SIST HD 629.2 S2:2006
SIST HD 629.2 S2:2006/A1:2009
Preskusne zahteve za pribor, ki se uporablja na elektroenergetskih kablih za
naznačene napetosti od 3,6/6(7,2) kV do vključno 20,8/36(42) kV - 2. del: Kabli,
izolirani z impregniranim papirjem
Test requirements for accessories for use on power cables of rated voltage from 3,6/6
(7,2) kV up to 20,8/36(42) kV - Part 2: Cables with impregnated paper insulation
Prüfanforderungen für Kabelgarnituren für Starkstromkabel 12 mit einer Nennspannung
von 3,6/6(7,2) kV bis 20,8/36(42) kV 13 Teil 2: Kabel mit massegtränkter
Papierisolierung
Prescriptions relatives aux essais sur les accessoires des câbles d'énergie pour des
tensions assignées de 3,6/6(7,2) kV à 20,8/36(42) kV - Partie 2: Câbles isolés au papier
imprégné
Ta slovenski standard je istoveten z: HD 629.2 S3:2024
ICS:
29.035.10 Papirni in kartonski izolacijski Paper and board insulating
materiali materials
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT HD 629.2 S3

DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT January 2024
ICS 29.060.20 Supersedes HD 629.2 S2:2006 (PART); HD 629.2
S2:2006/A1:2008 (PART)
English Version
Test requirements for accessories for use on power cables of
rated voltage from 3,6/6(7,2) kV up to 20,8/36(42) kV - Part 2:
Cables with impregnated paper insulation
Prescriptions relatives aux essais sur les accessoires des Prüfanforderungen für Kabelgarnituren für Starkstromkabel
câbles d'énergie pour des tensions assignées de 3,6/6(7,2) mit einer Nennspannung von 3,6/6(7,2) kV bis 20,8/36(42)
kV à 20,8/36(42) kV - Partie 2: Câbles isolés au papier kV - Teil 2: Kabel mit massegetränkter Papierisolierung
imprégné
This Harmonization Document was approved by CENELEC on 2023-12-11. CENELEC members are bound to comply with the
CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on application to the CEN-
CENELEC Management Centre or to any CENELEC member.
This Harmonization Document exists in three official versions (English, French, German).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. HD 629.2 S3:2024 E
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
1.1 General . 6
1.2 Type of accessories . 6
1.3 Rated voltage . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Current . 9
5 Components . 9
5.1 Connectors . 9
5.2 Materials . 10
6 Test assemblies . 10
6.1 Identification . 10
6.1.1 Cables . 10
6.1.2 Connectors . 10
6.1.3 Accessories . 10
6.2 Cable conductor cross-section . 10
6.3 Assembly . 10
6.4 Terminations . 11
6.5 Terminal boxes . 11
6.6 Joints and stop ends . 11
6.7 Separable connectors . 11
6.8 Test arrangements and number of samples . 12
7 Range of compliance . 12
8 Test sequences . 14
8.1 General . 14
8.2 Dynamic short circuit performance . 14
9 Test results . 14
9.1 General . 14
9.2 Test reports . 14
9.3 Failures . 14
9.3.1 General . 14
9.3.2 Installation or procedure errors . 14
9.3.3 Bushing failure . 15
9.3.4 Cable failure . 15
Annex A (normative) Identification of test cable (paper insulated) (see 6.1.1 and 9.2) . 31
Annex B (normative) Identification of connector (see 6.1.2 and 9.2) . 32
Bibliography . 33
Tables
Table 1 — Test cable conductor cross-sections for separable connectors . 12
Table 2 — Range of compliance for separable connectors . 13
Table 3 — Indoor terminations for impregnated paper insulated cables (including shrouded terminations)
(see Table 12) . 16
Table 4 — Outdoor terminations for impregnated paper insulated cables (see Table 12) . 17
Table 5 — Joints for impregnated paper insulated cables (see Table 13) . 18
Table 6 — Stop ends for impregnated paper insulated cables (see Table 14) . 19
Table 7 — Screened separable connectors for impregnated paper insulated cables (see Table 15) . 20
Table 8 — Unscreened separable connectors (excluding shrouded terminations) for impregnated paper
insulated cables (see Table 16) . 22
Table 9 — Additional tests for non-circular conductor profile and/or insulation screen compliance (see 7.4
and 7.5) . 23
Table 10 — Additional tests for smallest and largest cable cross section compliance (see 7.1) . 24
Table 11 — Summary of test voltages (refer to Clause 8) . 25
Table 12 — Test arrangements for terminations . 26
Table 13 — Test arrangements for joints . 27
Table 14 — Test arrangements for stop ends . 28
Table 15 — Test arrangements for screened separable connectors . 29
Table 16 — Test arrangement for unscreened separable connectors . 30
European foreword
This document (HD 629.2 S3:2024) has been prepared by CLC/TC 20 “Electric cables”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2024-12-11
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2026-12-11
conflicting with this document have to be
withdrawn
This document partially supersedes HD 629.2 S2:2006 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A complete
listing of these bodies can be found on the CENELEC website.
Introduction
This document defines the requirements which can be called up for joints, stop ends, separable connectors,
indoor and outdoor terminations when used with impregnated paper insulated power cables covered by
HD 621. The equivalent requirements for extruded power cables are given in HD 629.1 S3.
The equivalent requirements for transition joints, when used between extruded insulated power cables and
impregnated paper insulated power cables covered by HD 620 and HD 621 or other relevant standards are
given in HD 629.3 S1.
Formerly, approvals of such products have been achieved on the basis of national standards and specifications
and/or the demonstration of satisfactory service performance. The publication of this document does not
invalidate existing approvals. However, products approved to such earlier standards or specifications cannot
claim approval to this document unless specifically tested to it.
1 Scope
1.1 General
This document specifies performance requirements for type tests for cable accessories for use on impregnated
paper insulated power cables as specified in HD 621.
It is not necessary to repeat these tests, once successfully completed, unless changes are made in the
materials, design or manufacturing process, which might affect the performance characteristics.
Accessories for special applications such as submarine cables, ships cables or hazardous situations (explosive
environments, fire resistant cables or seismic conditions) are not included.
Test methods are included in EN 61442:2005.
NOTE It might 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 document,
provided an assessment is made of any additional type testing that might need to be carried out. Any such additional
testing that is part of a sequence of testing cannot be done separately.
1.2 Type of accessories
The accessories covered by this document are listed below:
— indoor and outdoor terminations of all designs, including terminal boxes;
— straight joints, branch joints and stop end joints of all designs, suitable for use underground or in air;
— screened or unscreened plug-in type or bolted-type separable connectors capable of interfacing with
bushing profiles as specified in EN 50180 series and EN 50181.
1.3 Rated voltage
The rated voltages U /U(U ) of the accessories covered by this document are 3,6/6(7,2) - 3,8/6,6(7,2) -
0 m
6/10(12) - 6,35/11(12) - 8,7/15(17,5) - 12/20(24) - 12,7/22(24) - 18/30(36) - 19/33(36) - 20,8/36(42) kV.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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.
EN IEC 61238-1-3, Compression and mechanical connectors for power cables - Part 1-3: Test methods and
requirements for compression and mechanical connectors for power cables for rated voltages above 1 kV (Um
= 1,2 kV) up to 36 kV (Um = 42 kV) tested on non-insulated conductors (IEC 61238-1-3)
EN 61442:2005, 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)
HD 621.S1, Medium voltage impregnated paper insulated distribution cables
EN 50655 series, Electrical cables - Accessories - Material characterization
IEC 60050-461, International Electrotechnical Vocabulary - Part 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.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
connector
device for connecting a conductor to an equipment terminal or for connecting two or more conductors to each
other
[SOURCE: EN IEC 61238-1 (IEV 461-17-03, modified)]
3.2
termination
device fitted to the end of a cable to ensure electrical connection with other parts of the system and to maintain
the insulation up to the point of connection
[SOURCE: IEV 461-10-01]
3.3
indoor termination
termination intended for use where it is not exposed to either solar radiation or weathering
[SOURCE: IEV 461-10-13]
3.4
outdoor termination
termination intended for use where it is exposed to either solar radiation or weathering or both
[SOURCE: IEV 461-10-14]
3.5
terminal box
air- or compound-filled box fully enclosing a termination
[SOURCE: IEV 461-10-03 modified]
3.6
shrouded termination
indoor termination with additional insulation at the bushing connection and used in an air-filled terminal box
[SOURCE: IEV 461-10-21]
3.7
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
3.7.1
type I joint
joint suitable for use where an impact resistance withstand is not required
3.7.2
type II joint
joint which has an impact resistance withstand in accordance with this document
3.8
straight joint
accessory making a connection between two cables to form a continuous circuit
[SOURCE: IEV 461-11-01]
Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
3.9
branch joint
accessory making a connection of a branch cable to a main cable
[SOURCE: IEV 461-11-17]
Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
3.10
radial field joint
joint where the individual cores are screened throughout the joint
Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
3.11
non-radial field joint
joint which does not contain individual core screens
Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
3.12
stop end
accessory providing a means of insulating the unconnected end of an energized cable
[SOURCE: IEV 461-10-07 modified]
3.13
separable connector
fully insulated termination permitting the connection and the disconnection of a cable to other equipment
3.14
screened separable connector
separable connector which does not have a screened external surface
[SOURCE: IEV 461-10-15]
3.15
unscreened separable connector
separable connector which does not have an external screen
[SOURCE: IEV 461-10-15]
3.16
plug-in type separable connector
separable connector in which the electrical contact is made by a sliding device
[SOURCE: IEV 461-10-17]
3.17
bolted-type separable connector
separable connector in which the electrical contact is made by a bolted device
[SOURCE: IEV 461-10-18]
3.18
tracking
progressive formation of conductive paths, which are produced on the surface or within a solid insulating
material, due to the combined effects of electric stress and electrolytic contamination
Note 1 to entry: Tracking usually occurs due to surface contamination.
[SOURCE: IEV 212-11-56]
3.19
erosion
wearing away of insulating material by the action of electric discharges
[SOURCE: IEV 212-11-55]
3.20
metallic housing
metal enclosure in intimate contact with the outer screen of a separable connector and having at least the
same current carrying capacity to earth as the metallic screen of the cable with which the separable connector
is to be used
3.21
U
rated power-frequency voltage between conductor and earth or metallic screen, for which the cable accessory
is designed
3.22
U
rated power-frequency voltage between conductors for which the cable accessory is designed
3.23
U
m
maximum value of the 'highest system voltage' for which the cable accessory is designed
4 Current
The continuous current rating of a termination or joint for impregnated paper insulation power cables shall be
in accordance with the appropriate cable specified in HD 621.S1 and shall be suitable for operation at the rated
current and under short circuit fault conditions at the temperatures stated therein.
The current rating of a separable connector is governed by the current rating of the mating bushing, (see
EN 50180 series and EN 50181).
5 Components
5.1 Connectors
Connectors used within the accessory shall comply with EN IEC 61238-1-3 where applicable, or with another
relevant standard or specification.
Users should be aware that accessory performances and compatibility shall be checked if the connector
installed in the accessory is different from that used for the accessory qualification. Compliance is given only
with the connector used in the tests.
5.2 Materials
It is not a pre-requirement for compliance with this performance standard but, if component material
characterization is required, the relevant part of EN 50655 (series) shall be used.
6 Test assemblies
6.1 Identification
6.1.1 Cables
The cables used for testing shall comply with HD 621.S1 as applicable.
Constructional details of the cables shall be identified as given in Annex A.
6.1.2 Connectors
Connectors used within the accessories shall be identified by the specification with which they comply.
Connectors used within the accessories shall be identified as in Annex B.
6.1.3 Accessories
Accessories to be tested shall be correctly identified with respect to
— name of manufacturer or supplier,
— type, designation, manufacturing date or code,
— minimum and maximum cross-sections, material and shape of cable conductor,
— minimum and maximum cable insulation diameters,
— connector type(s),
— rated voltage (see 1.3),
— installation instructions (reference and date),
— list of kit contents.
6.2 Cable conductor cross-section
Unless otherwise specified, the conductor cross-section shall be
2 2 2 2
— for terminations, joints or stop ends; 120 mm or 150 mm or 185 mm or 240 mm ,
— for separable connectors, as indicated in Table 1 for each rating, using either aluminium or copper
conductors.
6.3 Assembly
Accessories shall be assembled in the manner specified in the manufacturer's instructions, with the grade and
quantity of materials supplied. A joint designed for crossed cores shall be so assembled.
6.4 Terminations
Terminations shall be tested using the arrangement and with the number of samples detailed in Table 12.
6.5 Terminal boxes
A termination intended to be used in a metallic terminal box shall normally be tested in the specified terminal
box, which shall conform to the relevant standards .
For practical reasons, it is permissible to carry out the tests with the terminations enclosed in a test terminal
box fabricated from rigid metallic mesh or from insulating material lined with metal foil. The box shall allow
humidity ingress.
The test terminal box shall be of the same shape and dimensions (e.g. creepage lengths and clearances) as
the specified terminal box and be provided with conductor terminals and bushings of the type used in service.
When only one of the termination samples is required to be tested in the terminal box (see 7.7), the remote
end of the test cable may be terminated by any suitable means.
6.6 Joints and stop ends
Joints and stop ends shall normally be designed and tested to withstand a height of water of 1 m (10 kPa
(0,1 bar)).
For special applications and in situations subject to a high water table or prone to flooding, this height of water
may be insufficient to ensure the satisfactory performance of the moisture seals. In such cases, upon
agreement between manufacturer and user, the accessories shall be tested using an increased water height
of 20 m (200 kPa (2,0 bar)).
The chosen water height shall be recorded in the test report.
Testing at one water height will achieve compliance for that pressure only. Testing at both 1 m and 20 m water
heights will achieve compliance for those water heights and all intermediate pressures.
Where a branch joint is being tested, only the main cable shall carry heating current.
6.7 Separable connectors
The cross-section of the test cable shall be as defined in Table 1.
Tests on separable connectors shall be performed with the separable connector installed on its mating
bushing.
Unscreened separable connectors shall be tested at the minimum phase-to-phase and phase-to-earth
clearances recommended by the manufacturer.
———————
For example EN 50464-2-2:2007.
Table 1 — Test cable conductor cross-sections for separable connectors
Rating of separable Cable conductor cross-section
connectors
mm
Cu Al
a a
250 A
400 A 150 240
a a
630 A
a a
800 A
a a
1 250 A
The current value shall be sufficient to achieve the specified temperature of
the conductor, (see EN 61442:2005, 9.1).
The use of the cross-sections in Table 1 may lead to over-heating of the
bushing while achieving the required conductor temperature. Under these
circumstances, it is permissible to use a conductor one size smaller. If
bushing failure occurs, the test will be declared void (see 9.3).
a
under consideration
6.8 Test arrangements and number of samples
These are detailed in Tables 12 to 16.
7 Range of compliance
7.1 For terminations, joints and stop ends, compliance for one type of accessory for the range of cable
2 2
conductor cross-sections from 95 mm to 300 mm shall be obtained by successfully completing all the
appropriate tests of Tables 3 to 6 on one of the cross-sections specified in 6.2.
For separable connectors, compliance for one type of accessory for the range of cable conductor cross-
sections given in Table 2 shall be obtained by successfully completing all the appropriate tests of Table 7 or 8
on the cross-section specified in Table 1.
Extension of range of compliance for the same type of accessory to larger or smaller cable conductor cross-
sections shall be obtained by successfully completing the additional test sequence in Table 10, on the
appropriate larger or smaller cross-section.
For extension of compliance of separable connectors to larger cable conductor cross-sections, the test current
shall be limited to the rating of the mating bushing.
Compliance shall extend to the use of an accessory on cables of the same U as the test cable but with greater
nominal insulation thickness. The converse shall not apply.
Table 2 — Range of compliance for separable connectors
Rating of Cable conductor cross-section
separable
Range of compliance
connector
mm
min. max.
a a
250 A
400 A 95 240
a a
630 A
a a
800 A
a a
1 250 A
a
Under consideration
7.2 For compliance of an accessory for cable conductor cross sections outside this range the conductor
cross-section to be tested shall be subject to agreement between the interested parties.
7.3 Compliance is independent of the cable conductor material; tests may be carried out with either
aluminium or copper conductors.
7.4 Compliance for accessories tested on cables with shaped conductors shall cover the same type of
accessory when used on cables with circular conductors.
If compliance has been obtained using circular conductors, extension to shaped conductors may be obtained
by satisfactory completion of the test sequence in Table 9.
7.5 Compliance for accessories tested on cables with one type of insulation scr
...