SIST HD 620 S3:2023
(Main)Distribution cables with extruded insulation for rated voltages from 3,6/6 (7,2) kV up to and including 20,8/36 (42) kV
Distribution cables with extruded insulation for rated voltages from 3,6/6 (7,2) kV up to and including 20,8/36 (42) kV
HD 620 applies to cables with extruded insulation and for rated voltages Uo/U(Um) from 3,6/6 (7,2) kV up to 20,8/36(42) kV used in power distribution systems of voltages not exceeding the maximum r.m.s. value of the system voltage Um.
This Part (Part 1) specifies the general requirements applicable to these cables, unless otherwise specified in the particular sections of this HD.
Test methods specified are given EN 60228, EN 60229, EN 60332-1-2, EN 60811, EN 60885-3, HD 605 and HD 632.
Attention should be drawn to the fact that a significant number of sections include references to long term tests which are collected in HD 605. These long-term tests are considered as necessary and reflect the best available knowledge for the existing cable design. They are related to specific designs and different philosophies concerning adequate measures against the influence of water. However, it is the firm intention to reduce this large number of different tests, but more experience should be gained before starting to rationalise this important matter.
The particular types of cables are specified in Parts 9 to 12.
NOTE Parts 3, 4, 5, 6, 7 and 8 were withdrawn in HD 620 S2.
Energieverteilungskabel mit extrudierter Isolierung für Nennspannungen von 3,6/6 (7,2) kV bis einschließlich 20,8/36 (42) kV
Câbles de distribution, à isolation extrudée, pour des tensions assignées de 3,6/6 (7,2) kV à 20,8/36 (42) kV inclus
Distribucijski kabli z ekstrudirano izolacijo za naznačene napetosti od 3,6/6 (7,2) kV do vključno 20,8/36 (42) kV
Standard HD 620 se uporablja za kable z ekstrudirano izolacijo in za nazivne napetosti Uo/U(Um) od 3,6/6 (7,2) kV do 20,8/36(42) kV, ki se uporabljajo v sistemih za distribucijo električne energije z napetostjo, ko ta ne presega najvišje efektivne vrednosti pri izmeničnem toku sistemske napetosti Um.
Ta del (1. del) določa splošne zahteve, ki veljajo za te kable, razen če je v določenih razdelkih tega standarda HD določeno drugače.
Določene preskusne metode so navedene v standardih EN 60228, EN 60229, EN 60332-1-2, EN 60811, EN 60885-3, HD 605 in HD 632.
Upoštevati je treba tudi dejstvo, da veliko število razdelkov vključuje reference na dolgoročne preskuse, ki so zbrani v standardu HD 605. Ti dolgoročni preskusi veljajo za nujne in odražajo najboljše razpoložljivo znanje za obstoječo zasnovo kablov. Nanašajo se na posebne zasnove in drugačne pristope v zvezi z ustreznimi ukrepi za zaščito pred vplivi vode. Vseeno pa je pri tem jasen namen zmanjšati to veliko število različnih preskusov, vendar je pred začetkom postopka racionalizacije tega pomembnega vprašanja treba pridobiti več izkušenj.
Posebne vrste kablov so podane v delih od 9 in 12.
OPOMBA: Deli 3, 4, 5, 6, 7 in 8 so bili umaknjeni iz standarda HD 620 S2.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST HD 620 S3:2023
01-maj-2023
Distribucijski kabli z ekstrudirano izolacijo za naznačene napetosti od 3,6/6 (7,2)
kV do vključno 20,8/36 (42) kV
Distribution cables with extruded insulation for rated voltages from 3,6/6 (7,2) kV up to
and including 20,8/36 (42) kV
Energieverteilungskabel mit extrudierter Isolierung für Nennspannungen von 3,6/6 (7,2)
kV bis einschließlich 20,8/36 (42) kV
Câbles de distribution, à isolation extrudée, pour des tensions assignées de 3,6/6 (7,2)
kV à 20,8/36 (42) kV inclus
Ta slovenski standard je istoveten z: HD 620 S3:2023
ICS:
29.060.20 Kabli Cables
SIST HD 620 S3:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST HD 620 S3:2023
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SIST HD 620 S3:2023
HARMONIZATION DOCUMENT HD 620 S3
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT March 2023
ICS 29.060.20 Supersedes HD 620 S2:2010
English Version
Distribution cables with extruded insulation for rated voltages
from 3,6/6 (7,2) kV up to and including 20,8/36 (42) kV
Câbles de distribution, à isolation extrudée, pour des Energieverteilungskabel mit extrudierter Isolierung für
tensions assignées de 3,6/6 (7,2) kV à 20,8/36 (42) kV Nennspannungen von 3,6/6 (7,2) kV bis einschließlich
inclus 20,8/36 (42) kV
This Harmonization Document was approved by CENELEC on 2023-03-13. 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. HD 620 S3:2023 E
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Part 0
Foreword
This document (HD 620 S3:2023) has been prepared by WG 9 of CLC/TC 20, "Electric cables".
The following dates are fixed:
• latest date by which this document has to be (dop) 2024-03-13
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2026-03-13
conflicting with this document have to be
withdrawn
This document supersedes HD 620 S2:2010 and all of its amendments and corrigenda (if any).
HD 620 S3:2023 includes the following significant technical changes with respect to HD 620 S2:2010:
— a new Part 12 has been added to include thermoplastic insulations operating at 90°C.
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.
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Part 0
Contents
(HD 620 S3:2023)
PART 1 General requirements
PART 2 (Spare)
PART 3 (Spare)
PART 4 (Spare)
PARTS 5 & 6 (Spare – previously combined as new Part 10)
PARTS 7 & 8 (Spare – previously combined as new Part 11)
PART 9 HEPR insulated single core cables, and single core pre-assembled cables
9-E Cables with polyolefine compound sheath (Types 9E-1, 9E-3, 9E-4 and 9E-5)
9-I Cables with HEPR insulation and PVC sheath, single core
PART 10 XLPE insulated single core and 3 core cables, and single core pre-assembled cables
10-A Cables with XLPE insulation; PE or PVC sheath
10-B Cables with XLPE insulation; PE or PVC or polyolefine compound sheath
10-C Cables with XLPE insulation; PE or PVC sheath
10-D Cables with XLPE insulation, PE or PVC or polyolefine sheath
10-E1 Cables with polyolefine compound sheath (Types 10E-1, 10E-3, 10E-4 and 10E-5)
10-E2 Cables with aluminium tape screen and polyolefin compound sheath (Types 10E-6, 10E-7, 10E-
8, and 10E-9)
10-F Single-core cables with PVC sheath (Type 10F-1),
Single-core cables with PE sheath, laid-up (Type 10F-2),
Cables with PE sheath, laid-up around a bare earth conductor (Type 10F-3),
Cables with aluminium conductors and PE sheath, laid-up around a steel messenger (Type 10F-
4),
Cables with solid aluminium conductors and PE sheath, laid-up (Type 10F-5),
Cables with aluminium conductors and PE sheath, laid-up around an insulated steel messenger
(Type 10F-6),
Cables with common PVC sheath and individual copper screen (Type 10F-11),
Cables with common PE sheath and individual copper screen (Type 10F-12),
Cables with common PE sheath and common copper screen (Type 10F-13),
Cables with common PVC sheath and common copper screen (Type 10F-14)
10-G Cables with PVC or PE sheath, laid up (Type 10G-1),
Cables with PVC or PE sheath, laid up around a messenger (Type 10G-2),
Cables with PVC or PE sheath, not laid up (Type 10G-3),
Cables with PVC or PE sheath, laid up (Type 10G-4),
Cables with PVC or PE sheath, not laid up (Type 10G-5)
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HD 620 S3:2023
Part 0
10-I1 Triplexed medium voltage cables, aluminium conductor with XLPE insulation of reduced
thickness, aluminium tape screen and PE outer sheath for direct burying
10-I2 Triplexed medium voltage cables with XLPE insulation of reduced thickness, aluminium tape
screen and PE sheath, laid up around an aluminium clad steel messenger
10-I3 Triplexed medium voltage cables, aluminium conductor with XLPE insulation of reduced
thickness, aluminium tape screen and PE outer sheath with improved impact performance
10-J Single core and three core cables with PE sheath (Type 10J-1), or PVC sheath (Type 10J-2), or
PVC-flame retardant sheath (Type 10J-3)
10-K Cables with PE sheath (Type 10K-1), or PVC sheath (Type 10K-2), or Low smoke Halogen-free
sheath (Type 12K-3)
10-L Cables with PVC, Polyolefin, or XLPE sheath
10-M Single and three core cables with PE sheath (Type 10M-1) and PVC sheath (Type 10M-2)
10-N Cables with PE sheath (Type 10N)
10-O XLPE insulated cables: 11 kV and 33 kV copper wire screened with PE or polyolefine sheath,
and 33 kV lead sheathed with PE oversheath
10-P Cables with PVC sheath laid up around an earth conductor (Type 10P-1 and Type 10P-2),
cables with PVC sheath laid around a messenger (Type 10P-3)
10-R Cables with XLPE insulation, PE or PVC sheath
PART 11 EPR insulated single core and 3 core cables
11-N EPR insulated cables with PE sheath (Type 11N)
11-O EPR insulated cables: 11 kV and 33 kV copper wire screened with PE or polyolefine sheath
PART 12 PP-TPE insulated single core, single core reassembled, and three core cables
12-I Triplexed medium voltage cables, aluminium conductor with PP-TPE insulation of reduced
thickness, aluminium tape screen and PE outer sheath for direct burying
12-J Single core and three core cables with PE sheath (Type 12J-1) or PVC sheath (Type 12J-2) or
PVC-flame retardant sheath (Type 12J-3)
12-K Cables with PE Sheath (TYPE 12 K-1), PVC Sheath (TYPE 12 K-2) or Low smoke Halogen-free
sheath (Type 12 K-3)
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HD 620 S3:2023
Part 1
HD 620 S3:2023
DISTRIBUTION CABLES WITH EXTRUDED INSULATION FOR RATED VOLTAGES
FROM 3,6/6 (7,2) kV UP TO AND INCLUDING 20,8/36 (42) kV
PART 1:
GENERAL REQUIREMENTS
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Part 1
Contents Page
1 General . 3
1.1 Scope . 3
1.2 Object. 3
2 Definitions. 3
2.1 Definitions concerning the insulating and sheathing compounds . 3
2.2 Definitions relating to the tests . 4
2.3 Rated voltage . 4
3 Marking . 5
3.1 Indication of origin . 5
3.2 Additional marking . 5
3.3 Durability . 5
3.4 Legibility . 5
3.5 Common marking . 6
3.6 Use of the name CENELEC . 6
4 Construction of cables . 6
4.1 Conductors . 6
4.2 Insulation . 6
4.3 Screening of cores . 7
4.4 Assembly of cores . 7
4.5 Fillers and binder tapes . 7
4.6 Inner covering (bedding) . 7
4.7 Inner sheath . 8
4.8 Metallic coverings . 8
4.9 Outer sheath . 9
4.10 Earthing conductor . 9
4.11 Messenger . 9
5 Tests on completed cables . 10
6 Sealing and packing . 10
7 Current-carrying capacity . 10
8 Guide to use and selection of cables . 10
Annex A (informative) Guide to Use and selection of cables . 30
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Part 1
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 60228 Conductors of insulated cables (IEC 60228)
EN 60229 Electric cables – Tests on extruded oversheaths with a special protective function
(IEC 60229)
EN 60332-1-2 Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test for
vertical flame propagation for a single insulated wire or cable – Procedure for 1 kW
pre-mixed flame (IEC 60332-1-2)
EN 60811 series Insulating and sheathing materials of electric and optical cables – Common test
methods (IEC 60811 series)
EN 60885-3 Electrical test methods for electric cables – Part 3: Test methods for partial discharge
measurements on lengths of extruded power cables (IEC 60885-3)
HD 605 Electric cables – Additional test methods
HD 632 Power cables with extruded insulation and their accessories for rated voltages above
36 kV (U = 42 kV) up to 150 kV (U = 170 kV)
m m
IEC 60183 Guide to the selection of high-voltage cables
IEC 60287 series Electric cables – Calculation of the current rating
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HD 620 S3:2023
Part 1
1 General
1.1 Scope
HD 620 applies to cables with extruded insulation and for rated voltages U /U(U ) from 3,6/6 (7,2) kV up to
o m
20,8/36(42) kV used in power distribution systems of voltages not exceeding the maximum r.m.s. value of
the system voltage U .
m
This Part (Part 1) specifies the general requirements applicable to these cables, unless otherwise specified
in the particular sections of this HD.
The particular types of cables are specified in Parts 9 to 12.
NOTE Parts 3, 4, 5, 6, 7 and 8 were withdrawn in HD 620 S2.
1.2 Object
The objects of this Harmonisation Document are:
− to standardise cables that are safe and reliable when properly used, in relation to the technical
requirements of the system of which they form a part;
− to state the characteristics and manufacturing requirements which have a direct or indirect bearing on
safety;
− and to specify methods for checking conformity with those requirements.
2 Definitions
2.1 Definitions concerning the insulating and sheathing compounds
2.1.1 Insulating and sheathing compounds
The types of insulating and sheathing compounds covered by this HD are listed in Table 2.1.1 and Table
2.1.2 respectively, together with their abbreviated designations:
Table 2.1.1 – Insulating compounds
Insulating compounds See table for requirements:
a) Cross-linked:
Insulating compounds based on:
- Cross-linked polyethylene (XLPE) Table 2A
- Ethylene propylene rubber (EPR) Table 2B
- Hard ethylene propylene (HEPR) Table 2C
rubber
b) Thermoplastic:
- Polypropylene Thermoplastic (PP-TPE) Table 2D
Elastomer
The insulating materials used in cables with rated voltages from 3,6/6 kV to 20,8/36 kV shall be appropriate
for use at a continuous operating temperature of 90°C.
NOTE Thermoplastic PVC insulating material, with rated temperature of less than 90°C were withdrawn from this HD and are no
longer referenced since publication of HD 620 S1:1996 A1:2001.
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Part 1
A small number of cables are designed to operate above 90°C, when this is the case, they need to utilize
materials rated at these elevated temperatures. The maximum continuous operating temperatures
associated with each material are given in the relevant tables of requirements for insulating compounds,
Tables 2A, 2B, 2C, or 2D.
Table 2.1.2 – Sheathing compounds
Sheathing Compounds See table for requirements:
a) Elastomeric
(spare) (Table 3)
b) Thermoplastic:
Sheathing compounds based on:
- Polyvinyl chloride (PVC) Table 4A
- Polyethylene (PE) Table 4B
- Polyolefin (PO) Table 4C
2.1.2 Type of compound
The category in which a compound is placed according to its properties is determined by specific tests. The
type designation is not directly related to the chemical composition of the compound.
2.2 Definitions relating to the tests
NOTE Tests classified as Sample (S) or Routine (R) may be required as part of any type approval schemes.
2.2.1 Type tests (Symbol T)
Tests required to be made before supplying a type of cable covered by this HD on a general commercial
basis in order to demonstrate satisfactory performance characteristics to meet the intended application.
NOTE These tests are of such a nature that, after they have been made, they need not be repeated unless changes are made in the
cable material, design or type of manufacturing process which might change the performance characteristics.
2.2.2 Sample tests (Symbol S)
Tests made on samples of completed cable, or components taken from a completed cable adequate to verify
that the finished product meets the design specifications.
2.2.3 Routine tests (Symbol R)
Tests made on all production cable lengths to demonstrate their integrity.
2.2.4 Tests after installation
Test intended to demonstrate the integrity of the cable and its accessories as installed.
2.3 Rated voltage
The rated voltage of a cable is the reference voltage for which the cable is designed, and which serves to
define the electrical tests.
The rated voltage is expressed by the combination of the following values Uo/U(Um) expressed in kV.
U is the r.m.s. value between any phase conductor and earth (metal covering of the cable).
o
U is the r.m.s. value between any two phase conductors of a multicore cable or of a system of single-core
cables.
Um is the maximum r.m.s. value of the highest system voltage for which the equipment may be used.
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Part 1
The standard rated voltages Uo/U(Um), in kV r.m.s., of the cables in this HD are as follows:
U /U(U ) = 3,6/6(7,2) - 3,8/6,6(7,2) - 6/10(12)
o m
6,35/11(12) - 8,7/15(17,5) - 12/20(24)
12,7/22(24) - 15/20(24) - 15/25(30)
18/30(36) - 19/33(36) - 20,8/36(42)
In an alternating current system, the rated voltage of a cable shall be at least equal to the nominal voltage of
the system for which it is intended. If used in DC. systems, the maximum voltage has to be specified in the
particular sections.
3 Marking
3.1 Indication of origin
Cables shall be provided with an identification of origin consisting of the continuous marking of the
manufacturer’s name or trademark, or (if legally protected) identification number by one of the two following
alternative methods:
a) printed tape within the cable;
b) printing, indenting or embossing on the outer surface of the cable.
3.1.1 Continuity of marks
Unless otherwise specified in the particular sections, each specified mark shall be regarded as continuous if
the distance between the end of the mark and the beginning of the next identical mark does not exceed:
− 550 mm if the marking is on the outer surface of the cable,
− 275 mm if the marking is on a tape.
NOTE A ‘specified mark’ is any mandatory mark covered by this Part of the HD or by the particular requirements of Part 9 onwards of
this HD.
The diagram below shows an example of the marking as used on the outer surface of the cable, where the
word ‘ORIGIN’ is for the mandatory information required by the 3.1, and ‘XYZ’ is one of any other mandatory
marks.
3.2 Additional marking
Additional marking requirements may be specified in the particular sections.
3.3 Durability
Printed markings shall be durable. Durability shall be checked by the test given in Subclause 2.5.4 of
HD 605.
The printed legend shall be legible after carrying out the test.
3.4 Legibility
All markings shall be legible. Printed markings shall be in contrasting colours.
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Part 1
3.5 Common marking
Under consideration
3.6 Use of the name CENELEC
The name CENELEC, in full or abbreviated, shall not be marked directly on or in the cables.
4 Construction of cables
Compliance with the requirements specified in 4.1 to 4.11 and in the particular sections of this HD shall be
checked by inspection and by measurement according to the test methods in the documents listed in the
particular sections of this HD.
4.1 Conductors
4.1.1 Material
Conductors shall be either plain or metal-coated annealed copper or plain or metal-sheathed aluminium
(earthing conductor) or aluminium alloy in accordance with EN 60228 and the particular requirements in the
particular sections of this HD.
Conductors shall be either circular or sector in shape, and of solid metal or stranded.
4.1.2 Electrical resistance
The resistance of each conductor at 20 °C shall be in accordance with the requirements in EN 60228 for the
given class of conductor.
4.2 Insulation
4.2.1 Material
The insulation shall be extruded solid compound of one of the types listed in 2.1.1 and as specified for each
type of cable in the particular sections of this HD.
The test requirements for the insulating compounds are specified in Tables 2A, 2B, 2C, and 2D and the
reference to the test methods are specified in the particular sections.
4.2.2 Application
The insulation shall be applied by an extrusion process and shall form a compact and homogeneous body.
Special requirements may be given in the particular sections.
It shall be so applied that it fits closely on the conductor or conductor screen, if any, and it shall be possible
to remove the insulation, including conductor screen or insulation screen if bonded.
4.2.3 Thickness
The mean value of the thickness of the insulation, excluding semi-conducting layers, shall not be less than
the value specified in the particular sections.
However, the thickness at any place may be less than the specified value provided that the difference does
not exceed 0,1 mm + 10 % of the specified value.
Compliance shall be checked by the test method given in HD 605, Subclause 2.1.1.
4.2.4 Mechanical properties before and after ageing
The insulation shall have appropriate mechanical characteristics.
Compliance shall be checked by carrying out the tests specified in Tables 2A, 2B, 2C, and 2D.
4.2.5 Additional properties
These are specified in the particular sections.
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4.3 Screening of cores
4.3.1 Core screening
Screening of cores, if required (see 4.3.4), shall consist of conductor screening and insulation screening.
4.3.2 Conductor screening
The conductor screening shall consist of a non-metallic semi-conducting part and shall fulfil the requirements
specified in the particular sections.
4.3.3 Insulation screening
The insulation screen shall consist of a non-metallic semi-conducting part in combination with a metallic part.
The non-metallic part shall be applied directly upon the insulation of each core and in intimate contact, and
shall fulfil the requirements specified in the particular sections.
The metallic part shall be applied over the individual cores or over the core assembly and shall comply
with 4.8.
4.3.4 Screening limits for the cores
Unless otherwise specified the screening limits for the cores are:
− compulsory for all cables with XLPE or PP-TPE insulation
− compulsory for cables with EPR or HEPR insulation and Uo/U(Um) above 3,6/6 (7,2) kV.
4.4 Assembly of cores
In three-core cables, the cores shall be laid-up. The direction of lay is specified in the particular sections.
Auxiliary cores, if any, shall be laid-up in the interstices between main cores. Allowed number and
requirements thereof are specified in the particular sections.
4.5 Fillers and binder tapes
For each type of cable, the particular sections detail whether that cable includes fillers or tapes, or whether
the sheath or inner covering may penetrate between the cores, thus forming a filling. It shall be possible to
remove fillers without damage to cores.
A centre filler may be used in three-core cables, and the assembly of cores and fillers may be held together
by a binder tape, or tapes.
Fillers and binder tapes, if any, shall be composed of a suitable material.
For cables with core screening having a concentric metallic part over the assembly, the fillers may be semi-
conducting.
When fillers or binder tapes are applied, they shall be compatible with the other components. Compliance
with this requirement shall be checked by the test specified in Subclause 4.2.3.4 of EN 60811-401 for the
appropriate maximum conductor temperature in normal operation, unless stated otherwise in the particular
sections.
4.6 Inner covering (bedding)
The inner covering, if any, may be extruded or lapped, or a combination of the two, as specified in the
particular section.
4.6.1 Material
The material used for inner coverings shall be suitable for use at the maximum conductor temperature of the
cable in normal operation and compatible with the cable components with which it is in contact.
For radial field cables having a concentric metallic part over the assembly, the inner covering shall be semi-
conducting.
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Part 1
4.6.2 Application
The extruded inner covering shall surround the core assembly completely and may penetrate the spaces
between them. The extruded inner covering shall be separable without damage to the cores.
Lapped covering shall consist of one or more layers of tape covering the entire outer surface of the core
assembly.
For each type of cable, the particular sections indicate whether that cable includes an extruded or lapped
inner covering, or a combination of these.
4.6.3 Thickness
Unless otherwise specified in the particular sections the thickness of the extruded or lapped inner covering
need not be checked by measurement.
4.7 Inner sheath
An inner sheath may be specified in the particular sections.
4.7.1 Material
The material used for the extruded inner sheath shall be suitable for use at the maximum conductor
temperature of the cable in normal operation and compatible with the cable components with which it is in
contact.
Test requirements and references to test methods for the inner sheath are given in Tables 4A, 4B and 4C
unless stated otherwise in the particular sections.
4.7.2 Application
The inner sheath shall be extruded in a single layer. The sheath may be applied over an inner covering or
directly over the core assembly or over a collective metallic screen. The sheath shall not adhere to the
cores.
4.7.3 Thickness
The mean value of the thickness of the inner sheath shall be not less than the specified value for each type
and size of cable in the particular sections.
However, unless otherwise specified in the thickness at any place may be less than the specified value
provided that the difference does not exceed 0,2 mm + 20 % of the specified value.
Compliance shall be checked by the test method given in HD 605, Subclause 2.1.2.
4.7.4 Mechanical properties before and after ageing
The sheath shall have appropriate mechanical characteristics.
Compliance shall be checked by carrying out the tests given in Tables 4A, 4B and 4C unless stated
otherwise in the particular sections.
4.7.5 Other properties
Other properties are specified in the particular sections.
4.8 Metallic coverings
Cables shall have a metallic layer surrounding the cores individually or collectively.
The following types of metallic covering may be specified in the particular sections:
a) metallic screen
b) metal sheath
c) metallic armour
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SIST HD 620 S3:2023
Page 1-9
HD 620 S3:2023
Part 1
Detailed constructions of metallic coverings and their application, together with test methods and
requirements are specified in the particular sections.
In an alternating current system the metallic covering shall be non-magnetic when applied to individual cores
of either single-core or three-core cables.
4.9 Outer sheath
4.9.1 Material
The outer sheath shall be of an extruded synthetic material suitable for the maximum conduct
...
SLOVENSKI STANDARD
oSIST prHD 620 S3:2022
01-februar-2022
Distribucijski kabli z ekstrudirano izolacijo za nazivne napetosti od 3,6/6 (7,2) kV
do vključno 20,8/36 (42) kV
Distribution cables with extruded insulation for rated voltages from 3,6/6 (7,2) kV up to
and including 20,8/36 (42) kV
Energieverteilungskabel mit extrudierter Isolierung für Nennspannungen von 3,6/6 (7,2)
kV bis einschließlich 20,8/36 (42) kV
Câbles de distribution, à isolation extrudée, pour des tensions assignées de 3,6/6 (7,2)
kV à 20,8/36 (42) kV inclus
Ta slovenski standard je istoveten z: prHD 620 S3
ICS:
29.060.20 Kabli Cables
oSIST prHD 620 S3:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prHD 620 S3:2022
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oSIST prHD 620 S3:2022
HARMONIZATION DOCUMENT DRAFT
prHD 620 S3
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
December 2021
ICS 29.060.20 Will supersede HD 620 S2:2010 and all of its
amendments and corrigenda (if any)
English Version
Distribution cables with extruded insulation for rated voltages
from 3,6/6 (7,2) kV up to and including 20,8/36 (42) kV
To be completed To be completed
This draft Harmonization Document is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2022-02-25.
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,
Turkey 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 70520 Ref. No. prHD 620 S3 E
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oSIST prHD 620 S3:2022
Page 0-2
prHD 620 S3:2021
Part 0
Foreword
This document (prHD 620 S3:2021) has been prepared by WG 9 of CLC/TC 20, "Electric cables".
This document is currently submitted to the Enquiry.
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)
This document will supersede HD 620 S2:2010 and all of its amendments and corrigenda (if any).
prHD 620 S3:2021 includes the following significant technical changes with respect to HD 620 S2:2010:
— a new Part 12 has been added to include thermoplastic insulations operating at 90°C.
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oSIST prHD 620 S3:2022
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prHD 620 S3:2021
Part 0
Contents
(prHD 620 S3:2021)
PART 1 General requirements
PART 2 (Spare)
PART 3 (Spare)
PART 4 (Spare)
PARTS 5 & 6 (Spare – previously combined as new Part 10)
PARTS 7 & 8 (Spare – previously combined as new Part 11)
PART 9 HEPR insulated single core cables, and single core pre-assembled cables
9-E Cables with polyolefine compound sheath (Types 9E-1, 9E-3, 9E-4 and 9E-5)
9-I Cables with HEPR insulation and PVC sheath, single core
PART 10 XLPE insulated single core and 3 core cables, and single core pre-assembled cables
10-A Cables with XLPE insulation; PE or PVC sheath
10-B Cables with XLPE insulation; PE or PVC or polyolefine compound sheath
10-C Cables with XLPE insulation; PE or PVC sheath
10-D Cables with XLPE insulation, PE or PVC or polyolefine sheath
10-E1 Cables with polyolefine compound sheath (Types 10E-1, 10E-3, 10E-4 and 10E-5)
10-E2 Cables with aluminium tape screen and polyolefin compound sheath (Types 10E-6, 10E-7, 10E-
8, and 10E-9)
10-F Single-core cables with PVC sheath (Type 10F-1),
Single-core cables with PE sheath, laid-up (Type 10F-2),
Cables with PE sheath, laid-up around a bare earth conductor (Type 10F-3),
Cables with aluminium conductors and PE sheath, laid-up around a steel messenger (Type 10F-
4),
Cables with solid aluminium conductors and PE sheath, laid-up (Type 10F-5),
Cables with aluminium conductors and PE sheath, laid-up around an insulated steel messenger
(Type 10F-6),
Cables with common PVC sheath and individual copper screen (Type 10F-11),
Cables with common PE sheath and individual copper screen (Type 10F-12),
Cables with common PE sheath and common copper screen (Type 10F-13),
Cables with common PVC sheath and common copper screen (Type 10F-14)
10-G Cables with PVC or PE sheath, laid up (Type 10G-1),
Cables with PVC or PE sheath, laid up around a messenger (Type 10G-2),
Cables with PVC or PE sheath, not laid up (Type 10G-3),
Cables with PVC or PE sheath, laid up (Type 10G-4),
Cables with PVC or PE sheath, not laid up (Type 10G-5)
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oSIST prHD 620 S3:2022
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prHD 620 S3:2021
Part 0
10-I1 Triplexed medium voltage cables, aluminium conductor with XLPE insulation of reduced
thickness, aluminium tape screen and PE outer sheath for direct burying
10-I2 Triplexed medium voltage cables with XLPE insulation of reduced thickness, aluminium tape
screen and PE sheath, laid up around an aluminium clad steel messenger
Triplexed medium voltage cables, aluminium conductor with XLPE insulation of reduced
10-I3
thickness, aluminium tape screen and PE outer sheath with improved impact performance
10-J Single core and three core cables with PE sheath (Type 10J-1) or PVC sheath (Type 10J-2) or
PVC-flame retardant sheath (Type 10J-3)
10-K Cables with PE sheath (Type 10K-1) or PVC sheath (Type 10K-2)
10-L Cables with PVC. Polyolefin or XLPE sheath, laid-up (Type 10L-1) or not (Type 10L-2) around
an additional conductor
10-M Single and three core cables with PE sheath (Type 10M-1) and PVC sheath (Type 10M-2)
10-N Cables with PE sheath (Type 10N)
10-O XLPE insulated cables: 11 kV and 33 kV copper wire screened with PE or polyolefine sheath,
and 33 kV lead sheathed with PE oversheath
10-P Cables with PVC sheath laid up around an earth conductor (Type 10P-1 and Type 10P-2),
cables with PVC sheath laid around a messenger (Type 10P-3)
PART 11 EPR insulated single core and 3 core cables
11-N EPR insulated cables with PE sheath (Type 11N)
11-O EPR insulated cables: 11 kV and 33 kV copper wire screened with PE or polyolefine sheath
PART 12 Polypropylene-based Thermoplastic Elastomer insulated rated to at least 90°C
continuous operating temperature
12-I Triplexed medium voltage cables, aluminium conductor with HPTE insulation of reduced
thickness, aluminium tape screen and PE outer sheath for direct burying
12-J Single core and three core cables with PE sheath (Type 12J-1) or PVC sheath (Type 12J-2) or
PVC-flame retardant sheath (Type 12J-3)
12-K Cables with PE Sheath (TYPE 12 K-1), PVC Sheath (TYPE 12 K-2) or Low smoke Halogen-free
sheath (Type 12 K-3)
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oSIST prHD 620 S3:2022
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prHD 620 S3:2021
Part 1
prHD 620 S3:2021
DISTRIBUTION CABLES WITH EXTRUDED INSULATION FOR RATED VOLTAGES
FROM 3,6/6 (7,2) kV UP TO AND INCLUDING 20,8/36 (42) kV
PART 1:
GENERAL REQUIREMENTS
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oSIST prHD 620 S3:2022
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oSIST prHD 620 S3:2022
Page 1-1
prHD 620 S3:2021
Part 1
Contents Page
1 General . 3
1.1 Scope . 3
1.2 Object. 3
2 Definitions. 4
2.1 Definitions concerning the insulating and sheathing compounds . 4
2.2 Definitions relating to the tests . 4
2.3 Rated voltage . 5
3 Marking . 5
3.1 Indication of origin . 5
3.2 Additional marking . 6
3.3 Durability . 6
3.4 Legibility . 6
3.5 Common marking . 6
3.6 Use of the name CENELEC . 6
4 Construction of cables . 6
4.1 Conductors . 6
4.2 Insulation . 6
4.3 Screening of cores . 7
4.4 Assembly of cores . 7
4.5 Fillers and binder tapes . 7
4.6 Inner covering (bedding) . 8
4.7 Inner sheath . 8
4.8 Metallic coverings . 9
4.9 Outer sheath . 9
4.10 Earthing conductor . 10
4.11 Messenger . 10
5 Tests on completed cables . 10
6 Sealing and packing . 11
7 Current-carrying capacity . 11
8 Guide to use and selection of cables . 11
Annex A (informative) Guide to Use and selection of cables . 29
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oSIST prHD 620 S3:2022
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Part 1
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 60228 Conductors of insulated cables (IEC 60228)
EN 60229 Electric cables – Tests on extruded oversheaths with a special protective function
(IEC 60229)
EN 60332-1-2 Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test for
vertical flame propagation for a single insulated wire or cable – Procedure for 1 kW
pre-mixed flame (IEC 60332-1-2)
EN 60811 series Insulating and sheathing materials of electric and optical cables – Common test
methods (IEC 60811 series)
EN 60885-3 Electrical test methods for electric cables – Part 3: Test methods for partial discharge
measurements on lengths of extruded power cables (IEC 60885-3)
HD 605 Electric cables – Additional test methods
HD 632 Power cables with extruded insulation and their accessories for rated voltages above
36 kV (U = 42 kV) up to 150 kV (U = 170 kV)
m m
IEC 60183 Guide to the selection of high-voltage cables
IEC 60287 series Electric cables – Calculation of the current rating
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prHD 620 S3:2021
Part 1
1 General
1.1 Scope
HD 620 applies to cables with extruded insulation and for rated voltages Uo/U(Um) from 3,6/6 (7,2) kV up to
20,8/36(42) kV used in power distribution systems of voltages not exceeding the maximum r.m.s. value of
the system voltage Um.
This Part (Part 1) specifies the general requirements applicable to these cables, unless otherwise specified
in the particular sections of this HD.
Test methods specified are given EN 60228, EN 60229, EN 60332-1-2, EN 60811, EN 60885-3, HD 605 and
HD 632.
Attention should be drawn to the fact that a significant number of sections include references to long term
tests which are collected in HD 605. These long-term tests are considered as necessary and reflect the best
available knowledge for the existing cable design. They are related to specific designs and different
philosophies concerning adequate measures against the influence of water. However, it is the firm intention
to reduce this large number of different tests, but more experience should be gained before starting to
rationalise this important matter.
The particular types of cables are specified in Parts 9 to 12.
NOTE Parts 3, 4, 5, 6, 7 and 8 were withdrawn in HD 620 S2.
1.2 Object
The objects of this Harmonisation Document are:
− to standardise cables that are safe and reliable when properly used, in relation to the technical
requirements of the system of which they form a part;
− to state the characteristics and manufacturing requirements which have a direct or indirect bearing on
safety;
− and to specify methods for checking conformity with those requirements.
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Part 1
2 Definitions
2.1 Definitions concerning the insulating and sheathing compounds
2.1.1 Insulating and sheathing compounds
The types of insulating and sheathing compounds covered by this HD are listed in Table 2.1.1 and Table
2.1.2 respectively, together with their abbreviated designations:
Table 2.1.1 – Insulating compounds
Insulating compounds See table for requirements:
a) Cross-linked:
Insulating compounds based on:
- Cross-linked polyethylene (XLPE) Table 2A
- Ethylene propylene rubber (EPR) Table 2B
- Hard ethylene propylene (HEPR) Table 2C
rubber
b) Thermoplastic:
- Polypropylene Thermoplastic (PP-TPE) Table 2D
Elastomer
The insulating materials used in cables with rated voltages from 3,6/6 kV to 20,8/36 kV shall be appropriate
for use at a continuous operating temperature of 90°C.
NOTE Thermoplastic PVC insulating material, with rated temperature of less than 90°C were withdrawn from this HD and are no
longer referenced since publication of HD 620 S1:1996 A1:2001.
A small number of cables are designed to operate above 90°C, when this is the case, they need to utilize
materials rated at these elevated temperatures. The maximum continuous operating temperatures
associated with each material are given in the relevant tables of requirements for insulating compounds,
Tables 2A, 2B, 2C, or 2D.
Table 2.1.2 – Sheathing compounds
Sheathing Compounds See table for requirements:
a) Elastomeric
(spare) (Table 3)
b) Thermoplastic:
Sheathing compounds based on:
- Polyvinyl chloride (PVC) Table 4A
- Polyethylene (PE) Table 4B
- Polyolefin (PO) Table 4C
2.1.2 Type of compound
The category in which a compound is placed according to its properties is determined by specific tests. The
type designation is not directly related to the chemical composition of the compound.
2.2 Definitions relating to the tests
NOTE Tests classified as Sample (S) or Routine (R) may be required as part of any type approval schemes.
2.2.1 Type tests (Symbol T)
Tests required to be made before supplying a type of cable covered by this HD on a general commercial
basis in order to demonstrate satisfactory performance characteristics to meet the intended application.
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Part 1
NOTE These tests are of such a nature that, after they have been made, they need not be repeated unless changes are made in the
cable material, design or type of manufacturing process which might change the performance characteristics.
2.2.2 Sample tests (Symbol S)
Tests made on samples of completed cable, or components taken from a completed cable adequate to verify
that the finished product meets the design specifications.
2.2.3 Routine tests (Symbol R)
Tests made on all production cable lengths to demonstrate their integrity.
2.2.4 Tests after installation
Test intended to demonstrate the integrity of the cable and its accessories as installed.
2.3 Rated voltage
The rated voltage of a cable is the reference voltage for which the cable is designed, and which serves to
define the electrical tests.
The rated voltage is expressed by the combination of the following values U /U(U ) expressed in kV.
o m
Uo is the r.m.s. value between any phase conductor and earth (metal covering of the cable).
U is the r.m.s. value between any two phase conductors of a multicore cable or of a system of single-core
cables.
U is the maximum r.m.s. value of the highest system voltage for which the equipment may be used.
m
The standard rated voltages Uo/U(Um), in kV r.m.s., of the cables in this HD are as follows:
U /U(U ) = 3,6/6(7,2) - 3,8/6,6(7,2) - 6/10(12)
o m
6,35/11(12) - 8,7/15(17,5) - 12/20(24)
12,7/22(24) - 15/20(24) - 15/25(30)
18/30(36) - 19/33(36) - 20,8/36(42)
In an alternating current system, the rated voltage of a cable shall be at least equal to the nominal voltage of
the system for which it is intended. If used in d.c. systems, the maximum voltage has to be specified in the
particular sections.
3 Marking
3.1 Indication of origin
Cables shall be provided with an identification of origin consisting of the continuous marking of the
manufacturer’s name or trademark, or (if legally protected) identification number by one of the two following
alternative methods:
a) printed tape within the cable;
b) printing, indenting or embossing on the outer surface of the cable.
3.1.1 Continuity of marks
Unless otherwise specified in the particular sections, each specified mark shall be regarded as continuous if
the distance between the end of the mark and the beginning of the next identical mark does not exceed:
− 550 mm if the marking is on the outer surface of the cable,
− 275 mm if the marking is on a tape.
NOTE A ‘specified mark’ is any mandatory mark covered by this Part of the HD or by the particular requirements of Part 9 onwards of
this HD.
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Part 1
The diagram below shows an example of the marking as used on the outer surface of the cable, where the
word ‘ORIGIN’ is for the mandatory information required by the 3.1, and ‘XYZ’ is one of any other mandatory
marks.
3.2 Additional marking
Additional marking requirements may be specified in the particular sections.
3.3 Durability
Printed markings shall be durable. Durability shall be checked by the test given in Subclause 2.5.4 of
HD 605.
The printed legend shall be legible after carrying out the test.
3.4 Legibility
All markings shall be legible. Printed markings shall be in contrasting colours.
3.5 Common marking
Under consideration
3.6 Use of the name CENELEC
The name CENELEC, in full or abbreviated, shall not be marked directly on or in the cables.
4 Construction of cables
Compliance with the requirements specified in 4.1 to 4.11 and in the particular sections of this HD shall be
checked by inspection and by measurement according to the test methods in the documents listed in the
particular sections of this HD.
4.1 Conductors
4.1.1 Material
Conductors shall be either plain or metal-coated annealed copper or plain or metal-sheathed aluminium
(earthing conductor) or aluminium alloy in accordance with EN 60228 and the particular requirements in the
particular sections of this HD.
Conductors shall be either circular or sector in shape, and of solid metal or stranded.
4.1.2 Electrical resistance
The resistance of each conductor at 20 °C shall be in accordance with the requirements in EN 60228 for the
given class of conductor.
4.2 Insulation
4.2.1 Material
The insulation shall be extruded solid compound of one of the types listed in 2.1.1 and as specified for each
type of cable in the particular sections of this HD.
The test requirements for the insulating compounds are specified in Tables 2A, 2B, 2C, and 2D and the
reference to the test methods are specified in the particular sections.
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4.2.2 Application
The insulation shall be applied by an extrusion process and shall form a compact and homogeneous body.
Special requirements may be given in the particular sections.
It shall be so applied that it fits closely on the conductor or conductor screen, if any, and it shall be possible
to remove the insulation, including conductor screen or insulation screen if bonded.
4.2.3 Thickness
The mean value of the thickness of the insulation, excluding semi-conducting layers, shall not be less than
the value specified in the particular sections.
However, the thickness at any place may be less than the specified value provided that the difference does
not exceed 0,1 mm + 10 % of the specified value.
Compliance shall be checked by the test method given in HD 605, Subclause 2.1.1.
4.2.4 Mechanical properties before and after ageing
The insulation shall have appropriate mechanical characteristics.
Compliance shall be checked by carrying out the tests specified in Tables 2A, 2B, 2C, and 2D.
4.2.5 Additional properties
These are specified in the particular sections.
4.3 Screening of cores
4.3.1 Core screening
Screening of cores, if required (see 4.3.4), shall consist of conductor screening and insulation screening.
4.3.2 Conductor screening
The conductor screening shall consist of a non-metallic semi-conducting part and shall fulfil the requirements
specified in the particular sections.
4.3.3 Insulation screening
The insulation screen shall consist of a non-metallic semi-conducting part in combination with a metallic part.
The non-metallic part shall be applied directly upon the insulation of each core and in intimate contact, and
shall fulfil the requirements specified in the particular sections.
The metallic part shall be applied over the individual cores or over the core assembly and shall comply
with 4.8.
4.3.4 Screening limits for the cores
Unless otherwise specified the screening limits for the cores are:
− compulsory for all cables with XLPE or PP-TPE insulation
− compulsory for cables with EPR or HEPR insulation and Uo/U(Um) above 3,6/6 (7,2) kV.
4.4 Assembly of cores
In three-core cables, the cores shall be laid-up. The direction of lay is specified in the particular sections.
Auxiliary cores, if any, shall be laid-up in the interstices between main cores. Allowed number and
requirements thereof are specified in the particular sections.
4.5 Fillers and binder tapes
For each type of cable, the particular sections detail whether that cable includes fillers or tapes, or whether
the sheath or inner covering may penetrate between the cores, thus forming a filling. It shall be possible to
remove fillers without damage to cores.
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Part 1
A centre filler may be used in three-core cables, and the assembly of cores and fillers may be held together
by a binder tape, or tapes.
Fillers and binder tapes, if any, shall be composed of a suitable material.
For cables with core screening having a concentric metallic part over the assembly, the fillers may be semi-
conducting.
When fillers or binder tapes are applied, they shall be compatible with the other components. Compliance
with this requirement shall be checked by the test specified in Subclause 4.2.3.4 of EN 60811-401 for the
appropriate maximum conductor temperature in normal operation, unless stated otherwise in the particular
sections.
4.6 Inner covering (bedding)
The inner covering, if any, may be extruded or lapped, or a combination of the two, as specified in the
particular section.
4.6.1 Material
The material used for inner coverings shall be suitable for use at the maximum conductor temperature of the
cable in normal operation and compatible with the cable components with which it is in contact.
For radial field cables having a concentric metallic part over the assembly, the inner covering shall be semi-
conducting.
4.6.2 Application
The extruded inner covering shall surround the core assembly completely and may penetrate the spaces
between them. The extruded inner covering shall be separable without damage to the cores.
Lapped covering shall consist of one or more layers of tape covering the entire outer surface of the core
assembly.
For each type of cable, the particular sections indicate whether that cable includes an extruded or lapped
inner covering, or a combination of these.
4.6.3 Thickness
Unless otherwise specified in the particular sections the thickness of the extruded or lapped inner covering
need not be checked by measurement.
4.7 Inner sheath
An inner sheath may be specified in the particular sections.
4.7.1 Material
The material used for the extruded inner sheath shall be suitable for use at the maximum conductor
temperature of the cable in normal operation and compatible with the cable components with which it is in
contact.
Test requirements and references to test methods for the inner sheath are given in Tables 4A, 4B and 4C
unless stated otherwise in the particular sections.
4.7.2 Application
The inner sheath shall be extruded in a single layer. The sheath may be applied over an inner covering or
directly over the core assembly or over a collective metallic screen. The sheath shall not adhere to the
cores.
4.7.3 Thickness
The mean value of the thickness of the inner sheath shall be not less than the specified value for each type
and size of cable in the particular sections.
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However, unless otherwise specified in the thickness at any place may be less than the specified value
provided that the difference does not exceed 0,2 mm + 20 % of the specified value.
Compliance shall be checked by the test method given in HD 605, Subclause 2.1.2.
4.7.4 Mechanical properties before and after ageing
The sheath shall have appropriate mechanical characte
...
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