SIST HD 620 S2:2010

SLOVENSKI STANDARD
SIST HD 620 S2:2010
01-maj-2010
'LVWULEXFLMVNLNDEOL]HNVWUXGLUDQRL]RODFLMR]DQD]LYQHQDSHWRVWLRGN9
GRYNOMXþQRN9
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 S2:2010
ICS:
29.060.20 Kabli Cables
SIST HD 620 S2:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST HD 620 S2:2010

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SIST HD 620 S2:2010

HARMONIZATION DOCUMENT
HD 620 S2

DOCUMENT D'HARMONISATION
January 2010
HARMONISIERUNGSDOKUMENT

ICS 29.060.20 Supersedes HD 620 S1:1996 + A1:2001 + A2:2003 + A3:2007 + corr. Dec.2007


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 Energieverteilungskabel mit extrudierter
extrudée, pour des tensions assignées Isolierung für Nennspannungen
de 3,6/6 (7,2) kV à 20,8/36 (42) kV inclus von 3,6/6 (7,2) kV
bis einschließlich 20,8/36 (42) kV





This Harmonization Document was approved by CENELEC on 2009-12-01. 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 Central Secretariat or to any CENELEC member.

This Harmonization Document was established by CENELEC in English only.

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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. HD 620 S2:2010 E

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SIST HD 620 S2:2010
Page 0-2
HD 620 S2:2010
Part 0

Foreword
This Harmonization Document was prepared by WG 9 of the Technical Committee CENELEC TC 20,
Electric cables.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as
HD 602 S2 on 2009-12-01.
It supersedes HD 620 S1:1996, A1:2001, A2:2003 and A3:2007 plus its corrigendum of Dec. 2007.
In this revision of HD 620 the previous Parts 5 and 6 have been consolidated to become Part 10, and Parts 7
and 8 likewise to become Part 11.
Users of HD 620 should note that, in accordance with the decision of the Technical Board (D130/040),
national standards implementing one or more particular sections of HD 620 may be further updated in
advance of future amendments to the published version of the HD. This is explained more fully in document
TC20/Sec1596/R. This document is available via National Committees and will be updated on an annual
basis.
The following dates were fixed:
– latest date by which the HD has to be implemented

at national level by publication of a harmonized

national standard or by endorsement
(dop) 2010-12-01

– latest date by which the national standards conflicting

with the HD have to be withdrawn
(dow) 2012-12-01
By decision of the Technical Board (D81/139 extended by D104/118 & D114/076) this HD exists only in
English.
______________

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HD 620 S2:2010
Part 0

Contents

(HD 620 S2:2010)
PART 1 General requirements
PART 2 (Spare)
PART 3 (Spare)
PART 4 (Spare)
PARTS 5 & 6 (Combined as new Part 10)
PARTS 7 & 8 (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-E Cables with polyolefine compound sheath (Types 10E-1, 10E-3, 10E-4 and 10E-5)
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 S2:2010
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 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

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SIST HD 620 S2:2010
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HD 620 S2:2010
Part 1

HD 620 S2:2010
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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SIST HD 620 S2:2010

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SIST HD 620 S2:2010
Page 1-1
HD 620 S2:2010
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 . 4
3 Marking . 5
3.1 Indication of origin . 5
3.2 Additional marking . 5
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 . 10
7 Current-carrying capacity . 11
8 Guide to use and selection of cables . 11
Annex A (informative) Guide to use and selection of cables . 27

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HD 620 S2:2010
Part 1

References
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including 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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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.
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 11.
NOTE Cables originally in Parts 3, 4, 5, 6, 7 and 8 have now been withdrawn.
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 below, together with their
abbreviated designations:
Table 2.1.1 – Insulating and sheathing compounds
Insulating and sheathing compounds See:
Insulation a) Thermoplastic:
 (spare)
b) 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
Sheathing a) Elastomeric
 (under consideration) (Table 3)
b) Thermoplastic:
 Sheathing compounds based on:
- Polyvinyl chloride (PVC) Table 4A
- Polyethylene (PE)Table 4B
- Polyolefine (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 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.

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Part 1

The rated voltage is expressed by the combination of the following values U /U(U ) expressed in kV.
o m
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.
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 U /U(U ), in kV r.m.s., of the cables in this HD are as follows:
o m
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.
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.

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Part 1

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 and 2C 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.

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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 and 2C.
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 insulation
− compulsory for cables with EPR or HEPR insulation and U /U(U ) above 3,6/6 (7,2) kV.
o m
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 8.1.4 of EN 60811-1-2 for the
appropriate maximum conductor temperature in normal operation, unless stated otherwise in the particular
sections.

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Part 1

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 3, 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 3, 4A, 4B and 4C unless stated
otherwise in the particular sections.
4.7.5 Other properties
Other properties are specified in the particular sections.

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HD 620 S2:2010
Part 1

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
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 conductor temperature
in normal operation and of the type detailed in the particular sections.
The test requirements for these compounds are specified in Tables 3, 4A, 4B and 4C unless stated
otherwise in the particular sections.
4.9.2 Application
A suitable separator may be placed under the outer sheath.
4.9.3 Thickness
Unless otherwise specified in the particular section the following requirements shall apply.
4.9.3.1 Sheath applied over a smooth surface
For a s
...