kSIST FprHD 629.3 S1:2023

SLOVENSKI STANDARD
oSIST prHD 629.3 S1:2023
01-marec-2023
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 - 3. del: Prehodni
spoji med kabli z impregnirano papirno izolacijo in kabli z ekstrudirano izolacijo
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 3: Transition joints between cables with impregnated
paper insulation and cables with extruded insulation
Prüfanforderungen für Kabelgarnituren für Starkstromkabel mit einer 12 Nennspannung
von 3,6/6(7,2) kV bis 20,8/36(42) kV 13 Teil 3: Übergangsmuffen für Kabel mit
massegetränkter Papierisolierung 14 und für Kabel mit extrudierter Kunststoffisolierung
Ta slovenski standard je istoveten z: prHD 629.3 S1
oSIST prHD 629.3 S1:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prHD 629.3 S1:2023

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oSIST prHD 629.3 S1:2023


HARMONIZATION DOCUMENT DRAFT
prHD 629.3 S1
DOCUMENT D'HARMONISATION

HARMONISIERUNGSDOKUMENT

January 2023
ICS  Will supersede 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 3:
Transition joints between cables with impregnated paper
insulation and cables with extruded insulation
To be completed Prüfanforderungen für Kabelgarnituren für Starkstromkabel
mit einer 12 Nennspannung von 3,6/6(7,2) kV bis
20,8/36(42) kV 13 Teil 3: Übergangsmuffen für Kabel mit
massegetränkter Papierisolierung 14 und für Kabel mit
extrudierter Kunststoffisolierung
This draft Harmonization Document is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2023-04-07.

It has been drawn up by CLC/TC 20.

If this draft becomes a Harmonization Document, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for implementation of this Harmonization Document on a national level.

This draft Harmonization Document was established by CENELEC 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a Harmonization Document. It is distributed for review and comments. It is subject to change without notice
and shall not be referred to as a Harmonized Document.



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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 74583 Ref. No. prHD 629.3 S1 E

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oSIST prHD 629.3 S1:2023
prHD 629.3 S1:2023 (E)
Contents Page
10 European foreword . 4
11
Introduction . 5
12 1 Scope . 6
13 1.1 General . 6
14 1.2 Type of accessories . 6
15 1.3 Rated voltage . 6
16 2 Normative references . 6
17 3 Definitions . 7
18 4 Current . 8
19 5 Components . 9
20 5.1 Connectors . 9
21 5.2 Materials . 9
22 6 Test assemblies . 9
23 6.1 Identification . 9
24 6.1.1 Cables . 9
25 6.1.2 Connectors . 9
26 6.1.3 Accessories . 9
27 6.2 Cable conductor nominal cross section . 10
28 6.2.1 Paper cable . 10
29 6.2.2 Polymeric cable . 10
30 6.2.3 Qualification . 10
31 6.3 Assembly . 11
32 6.4 Transition joints . 11
33 6.5 Test arrangements and number of samples . 11
34 7 Extent of compliance . 12
35 7.1 General . 12
36 7.2 Connectors . 12
37 7.3 Cable constructions . 13
38 7.4 Extension of compliance to paper to paper cable joints . 14
39 7.5 Extension of compliance from EPR or HEPR to XLPE/paper transition joints . 14
40 8 Test sequences . 14
41 8.1 General . 14
42 8.2 Dynamic short circuit performance . 14
43 9 Test results . 15
44 9.1 General . 15
45 9.2 Test reports . 15
46 9.3 Failures . 15
47 9.3.1 General . 15
48 9.3.2 Installation or procedure errors . 15
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49 9.3.3 Cable failure . 16
50 10 Visual examination . 16
51 Annex A (normative) Identification . 22
52 A.1 Identification of test cable (paper insulated) (see 6.1.1 and 9.2) . 22
53 A.2 Identification of test cable (extruded insulation) (see 6.1.1 and 9.2) . 23
54 Annex B (normative) Identification of connector (see 6.1.2 and 9.2). 24
55 Annex C (normative) Visual examination . 25
56 C.1 Method . 25
57 C.2 Examination sheet . 26
58 C.3 Special requirements for transition joints submitted to test sequence B3R . 26
59 Annex D (informative) Test for quality check of insulation of paper insulated cable . 27
60 D.1 Oil bath test . 27
61 Annex E (normative) Test sequences B3W (Withstand) and B3R (Robustness) . 28
62 E.1 General . 28
63 E.2 Purpose . 28
64 E.3 General test conditions . 28
65 E.4 AC voltage test . 29
66 E.5 Combined water and conductor cycling test . 29
67 E.6 Electrical heat cycling test in air. 30
68 E.7 AC breakdown test on set 1 and set 2 samples (for B3R category only) . 30
69 E.8 AC voltage test (for B3W category only) . 31
70 E.9 Visual examination . 31
71 Annex F (informative) Commonly used types of paper insulated cable designs . 32
72 Bibliography . 33
73 Tables
74 Table 1 — Selection of nominal cross sections of extruded insulated cable vs paper insulated cable
75 conductor nominal cross sections . 10
76
Table 2 — Compliance and qualification scheme for transition joints . 11
77 Table 3 — Compliance requirements of connectors for joints. 12
78 Table 4 — Extension of compliance from tested paper cable to other types of paper cable . 13
79 Table 5 — Compliance from tested extruded cable insulation to other extruded cable insulation . 14
80 Table 6 — Transition joints between cables with impregnated paper insulation and cables with extruded
81 insulation (see Figure 1) . 17
82 Table 7 — Additional tests for compliance extension to other conductor connectors . 19
83 Table 8 — Summary of test voltages (refer to Clause 7) . 20
84 Figures
85 Figure 1 — Test arrangements for transition joints . 21
86 Figure E.1 — general diagram of the testing set-up . 28
87 Figure E.2 — heating cycles (principle) . 30
88
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oSIST prHD 629.3 S1:2023
prHD 629.3 S1:2023 (E)
89 European foreword
90 This document (prHD 629.3 S1:2022) has been prepared by the CLC/TC 20 “Electric cables”.
91 This document is currently submitted to the Enquiry.
92 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
93 This document will partially supersede HD 629.2 S2:2006 and all of its amendments and corrigenda (if any).
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94 Introduction
95 This document has been written as part of a series of standards to satisfy the Public Procurement Directive
96 and is complementary to HD 620 and HD 621 or other relevant standard, which covers extruded insulated
97 power cables and impregnated paper insulated power cables from 3,6/6(7,2) kV to 20,8/36(42) kV, inclusive.
98 This document defines the requirements which can be called up for transition joints, when used between
99 extruded insulated power cables and impregnated paper insulated power cables covered by HD 620 and
100 HD 621 or other relevant standard.
101 The test methods for these accessories are given in EN 61442:2005 and Annex E.
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102 1 Scope
103 1.1 General
104 This document specifies performance requirements for type tests for transition joints for use between extruded
105 insulated power cables as specified in HD 620 and impregnated paper insulated power cables as specified in
106 HD 621 or other relevant standard.
107 Once type test for an accessory is successfully completed, it is not necessary to repeat the test, unless
108 changes are made in the materials, design or manufacturing process, which might affect the performance
109 characteristics.
110 Possible extra thermo-mechanical forces due to high current loads from renewable sources of power
111 generation are not covered by these tests (under consideration).
112 Accessories for special applications such as submarine cables, ships cables or hazardous situations
113 (explosive environments, fire resistant cables or seismic conditions) are not included.
114 Test methods are included in EN 61442:2005 and Annex E.
115 NOTE 1 This document does not invalidate existing approvals of products achieved on the basis of national standards
116 and specifications and/or the demonstration of satisfactory service performance. However, products approved according
117 to such national standards or specifications cannot directly claim approval to this document.
118 NOTE 2 It might be possible, subject to agreement between supplier and purchaser, and/or the relevant conformity
119 assessment body, to demonstrate that conformity to the earlier standard can be used to claim conformity to this
120 document, provided an assessment is made of any additional type testing that might need to be carried out. Any such
121 additional testing that is part of a sequence of testing cannot be done separately.
122 1.2 Type of accessories
123 The accessories covered by this document are straight and branch transition joints of all designs, suitable for
124 use underground or in air.
125 1.3 Rated voltage
126 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
127 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 where:
128 2 Normative references
129 The following documents are referred to in the text in such a way that some or all of their content constitutes
130 requirements of this document. For dated references, only the edition cited applies. For undated references,
131 the latest edition of the referenced document (including any amendments) applies.
132 EN IEC 61238-1-3, Compression and mechanical connectors for power cables - Part 1-3: Test methods and
133 requirements for compression and mechanical connectors for power cables for rated voltages above 1 kV (U
m
134 = 1,2 kV) up to 36 kV (U = 42 kV) tested on non-insulated conductors
m
135 EN 61442:2005, Test methods for accessories for power cables with rated voltages from 6 kV (Um = 7,2 kV)
136 up to 36 kV (Um = 42 kV) (IEC 61442:2005)
137 HD 620 S2, Distribution cables with extruded insulation for rated voltages from 3,6/6 (7,2) kV up to and
138 including 20,8/36 (42) kV
139 HD 621 S1, Medium voltage impregnated paper insulated distribution cables
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140 HD 629.1 S3, Test requirements for accessories for use on power cables of rated voltage from 3,6/6(7,2) kV
141 up to 20,8/36(42) kV - Part 1: Accessories for cables with extruded insulation
142 IEC 60050-461, International Electrotechnical Vocabulary - Chapter 461: Electric cables
143 3 Definitions
144 For the purposes of this document, the terms and definitions given in IEC 60050-461 and the following apply.
145 ISO and IEC maintain terminology databases for use in standardization at the following addresses:
146 — ISO Online browsing platform: available at https://www.iso.org/obp
147 — IEC Electropedia: available at https://www.electropedia.org/
148 3.1
149 connector
150 device for connecting a conductor to an equipment terminal or for connecting two or more conductors to each
151 other
152 [SOURCE: EN IEC 61238-1-3]
153 3.2
154 joint
155 accessory suitable for use in air or underground which makes a connection between two or more insulated
156 power cables to form a continuous circuit
157 3.3
158 type I joint
159 joint suitable for use where an impact resistance withstand is not required
160 3.4
161 type II joint
162 joint which has an impact resistance withstand in accordance with this document
163 3.5
164 R category joint
165 joint which has an AC breakdown minimum performance after extended immersion period in water with
166 combined water and conductor heating cycling tests
167 3.6
168 W category joint
169 joint which has an AC withstand minimum performance after extended immersion period in water with
170 combined water and conductor heating cycling tests
171 3.7
172 Z category joint
173 joint not tested with the extended immersion period in water and combined water and conductor heating
174 cycling tests
175 3.8
176 straight joint
177 accessory making a connection between two cables to form a continuous circuit
178 Note 1 to entry: For types of joint see 3.3 and 3.4.
179 [SOURCE: IEV 461-11-01]
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oSIST prHD 629.3 S1:2023
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180 3.9
181 branch joint
182 accessory making a connection of a branch cable to a main cable
183 Note 1 to entry: For types of joint see 3.3 and 3.4.
184 [SOURCE: IEV 461-11-17]
185 3.10
186 transition joint
187 straight or branch joint making a connection between paper insulated cable and extruded cable
188 [SOURCE: IEV 461-11-04 modified]
189 3.11
190 trifurcating transition joint
191 straight or branch joint making a connection between 3 core paper insulated cable and 3 separate single core
192 extruded cables
193 3.12
194 radial field joint
195 joint where the individual cores are screened throughout the joint
196 3.13
197 non-radial field joint
198 joint, which does not contain individual core screens
199 3.14
200 shelf life / storage life
201 duration of the time interval components may be stored under specified conditions without changing any
202 important properties
203 [SOURCE: IEV 212-13-15, modified]
204 3.15
205 U
0
206 rated power-frequency voltage between conductor and earth or metallic screen, for which the cable accessory
207 is designed
208 3.16
209 U
210 rated power-frequency voltage between conductors for which the cable accessory is used
211 3.17
212 U
m
213 maximum value of the 'highest system voltage' for which the cable accessory is used
214 4 Current
215 The continuous current rating of a transition joint is in accordance with the operating temperature of the cable
216 specified in HD 621 or other relevant cable standards and is suitable for operation at the rated current and
217 under short circuit fault conditions at the temperatures stated therein.
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218 5 Components
219 5.1 Connectors
220 Connectors used within the accessory shall comply with EN IEC 61238-1-3, or with another relevant standard
221 or specification when agreed between manufacturer/supplier. All connectors shall be identified in accordance
222 with Annex B.
223 Where an accessory is to be installed with a different connector than that used for qualification, its compatibility
224 and performance shall be verified.
225 Compliance is demonstrated with the connector used in the tests. For extension of compliance to other
226 connectors refer to 7.2.
227 5.2 Materials
228 It is not a prerequisite for compliance with this testing standard that any component material (resin, heat-shrink
229 tubing etc.) should be subject to any form of individual type testing or fingerprinting.
230 Where required, monitoring of the ongoing suitability of component material supplies should be done by
231 fingerprinting using the EN 50655 series.
232 If type testing of resins, pressure sensitive adhesive tapes and flexible insulating sleevings for electrical
233 purposes is required, reference should be made to the relevant standards produced by IEC/TC 15, which have
234 been adopted by CENELEC, as listed for information in the bibliography.
235 The term “material characterization” is sometimes used in conjunction with both type testing and fingerprinting
236 of component materials, but it is undefined, and its use should therefore be avoided.
237 6 Test assemblies
238 6.1 Identification
239 6.1.1 Cables
240 The cables used for testing shall comply with HD 620 S2 and/or HD 621 S1 or other relevant standards as
241 applicable. Constructional details of the cables shall be identified (refer to A.1 and A.2).
242 Paper insulated cables used for the tests are sometimes issued from the field. It is recommended to check the
243 quality of the insulation of the paper insulated cable (according to Annex D for example) prior to proceed to any
244 test.
245 6.1.2 Connectors
246 Connectors used within the accessories shall be identified as in Annex B.
247 6.1.3 Accessories
248 The accessory that is installed shall be within its shelf life.
249 Accessories to be tested shall be correctly identified with respect to
250 — name of manufacturer/supplier,
251 — type, designation, manufacturing date or code, end of shelf life date,
252 — minimum and maximum nominal cross sections, material and shape of cable conductor as used in
253 EN 60228 for conductors,
254 — minimum and maximum cable insulation diameters,
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255 — connector type(s),
256 — rated voltage (see 1.3),
257 — installation instructions (reference and date),
258 — list of kit contents.
259 6.2 Cable conductor nominal cross section
260 6.2.1 Paper cable
2
261
Unless otherwise specified, the nominal cross sections of the paper insulated cable shall be between 120 mm
2
262 .
and 240 mm
263 6.2.2 Polymeric cable
264 The nominal cross sections of extruded insulated cable shall be selected in order not to overheat or cool the
265 paper cable side (see Table 1).
266 Table 1 — Selection of nominal cross sections of extruded insulated cable
267 vs paper insulated cable conductor nominal cross sections
nominal cross sections of nominal cross sections of
2
paper insulated cable (mm ) extruded insulated cable
2
(mm )
Al Cu Al Cu
120  120 95
 120 185 120
150  150 95
 150 240 150
185  185 120
 185 300 185
240  240 150
 240 400 240
268 6.2.3 Qualification
2 2
269 Compliance for the range of cable nominal cross sections from 35 mm to 400 mm , shall be obtained by
270 successfully completing all the appropriate tests of Table 6 on any one of the paper cable nominal cross
271 sections specified in 6.2.1.
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prHD 629.3 S1:2023 (E)
272 Table 2 — Compliance and qualification scheme for transition joints
Paper cable Tests to be performed Range of
nominal nominal
Accessory size
Category of joints
cross cross
tested
a
Test Sequences
sections sections
Z R W
Samples
selected qualified
B1 X X X 4 (1- core)
b
(Type I or II) 2 (3- core)
one of:
2
X X X 3 (1- core)
2 B2 35 mm
Specific for one 120 mm
b
(Class 0, 1, 2 or 3)
1 (3- core) to
of the conductor
2
2
150 mm
400 mm
sizes described
  X 3 (1- core)
2 B3W
in 5.2.1
185 mm b

1 (3- core)
2
240 mm
 X  6 (1- core)
B3R
b
2 (3- core)
a
Test Sequences refer to Table 6.
b
Trifurcating transition joints shall be tested as per 3-core joints.
273 The choice of type, class and category of joint shall be agreed between manufacturer and purchaser.
274 6.3 Assembly
275 Accessories shall be assembled in accordance with the manufacturer/supplier's instructions, using the
276 components and materials supplied or specified. A joint designed for crossed cores shall be assembled with
277 the cores crossed.
278 6.4 Transition joints
279 Transition joints shall be tested according to Table 2 to withstand a water height of 1 m (equivalent to 10 kPa
280 relative).
281 NOTE 1 For special applications and in situations subject to a high-water table or prone to flooding, this height of
282 water might be insufficient to ensure the satisfactory performance of the moisture seals.
283 Where a water height of 1 m is deemed insufficient, upon agreement with the manufacturer/supplier,
284 accessories shall be tested using an increased water height of 20 m (equivalent to 200 kPa relative).
285 The water height used shall be recorded in the test report.
...