HD 632 S1:1998/A1:2002

SLOVENSKI STANDARD
01-november-2002
Revision of HD according to maintenance schedule - Group 5
Power cables with extruded insulation and their accessories for rated voltages above 36
kV (Um = 42 kV) up to 150 kV (Um = 170 kV)
Starkstromkabel mit extrudierter Isolierung und ihre Garnituren für Nennspannungen
über 36 kV (Um = 42 kV) bis 150 kV (Um = 170 kV)
Câbles d'énergie à isolation extrudée et leurs accessoires pour des tensions assignées
supérieures à 36 kV (Um = 42 kV) et jusqu'à 150 kV (Um = 170 kV)
Ta slovenski standard je istoveten z: HD 632 S1:1998/A1:2002
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT
HD 632 S1/A1
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT July 2002
ICS 29.060.20
English version
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
Câbles d'énergie à isolation extrudée Starkstromkabel mit extrudierter Isolierung
et leurs accessoires pour des tensions und ihre Garnituren für Nennspannungen
assignées supérieures à 36 kV (U = 42 kV) über 36 kV (U = 42 kV)
m m
et jusqu'à 150 kV (U = 170 kV) bis 150 kV (U = 170 kV)
m m
This amendment A1 modifies the Harmonization Document HD 632 S1:1998; it was approved by
CENELEC on 2002-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal
Regulations which stipulate the conditions for implementation of this amendment on a national level.
Up-to-date lists and bibliographical references concerning such national implementation may be obtained on
application to the Central Secretariat or to any CENELEC member.
This amendment exists in two official versions (English, French).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. HD 632 S1:1998/A1:2002 E

Page 0-2
FOREWORD
This amendment to the Harmonization Document HD 632 S1:1998 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 amendment A1 to HD 632 S1 on 2002-03-01.
Part 1, “General test requirements” has been fully revised and amendments have been made to Part 2
“Additional test methods”.
A list of additions and amendments to the particular sections of Parts 3 to 11 is given in this Part 0.
NOTE  During the preparation of this amendment, HD 405.1 has been superseded by EN 50265 and HD 48 by EN 60230. In
general, the updating of these references has not been included in this amendment unless a complete part or section has been
replaced. Users should refer to the new standard for the most up-to-date information.
National standards implementing one or more particular sections of HD 632 may update cross-references in advance of changes to
the published version of the HD.
By decision of the Technical Board (D81/139), this HD exists only in English and French.
The following dates were fixed:
- latest date by which the existence of the amendment has
to be announced at national level (doa) 2002-09-01
- latest date by which the amendment has to be implemented at national
level by publication of an identical national standard or by
endorsement (dop)2003-03-01
- latest date by which the national standards conflicting with the
amendment have to be withdrawn (dow) 2005-03-01
__________
Page 0-3
CONTENTS
(HD 632 S1:1998 plus A1:2002)
1)
PART 1
General test requirements
2)
PART 2 Additional test methods
PART 3
Test requirements for cables with XLPE
insulation and metallic screen and
their accessories
3-A Cables with XLPE insulation and metallic
screen and their accessories (Test list 3A)
3-D Cables with XLPE insulation and copper
screen and their accessories (Test list 3D)
3-E Cables with XLPE insulation and metallic
screen and their accessories (Test list 3E)
3-I Cables with XLPE insulation and metallic
screen and their accessories (Test list 3I)
1)
Cables with XLPE insulation and copper
3-K
screen and their accessories (Test list 3K)
3-L Cables with XLPE insulation and metallic
screen and their accessories (Test list 3L)
3-M Cables with XLPE insulation, copper
screen and their accessories (Test list 3M)
2)
3-N Cables with XLPE insulation and copper
screen and their accessories (Test list 3N)
3-O Cables with XLPE insulation and copper or
aluminium screen and their accessories
(Test list 3O)
PART 4 Test requirements for cables with XLPE
insulation, metallic screen and metal-
laminated sheath and their accessories
4-A Cables with XLPE insulation, metallic
screen and metal-laminated sheath and
their accessories (Test list 4A)
4-B Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4B)
1)
4-C Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4C)
4-D Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4D)
4-E Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4E)
4-F Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4F)

1)
Amendment A1 introduces a completely revised part or section.
2)
Amendment A1 introduces some amendments to the text.

Page 0-4
1)
4-G Cables with XLPE insulation and metal-
laminated screen and their accessories
(Test list 4G)
1)
4-K Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4K)
4-L Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4L)
4-M Cables with XLPE insulation, copper
screen and aluminium-laminated sheath
and their accessories (Test list 4M)
4-O Cables with XLPE insulation, copper or
aluminium screen and copper or
aluminium laminated sheath and their
accessories (Test list 4O)
1)
4-P Cables with XLPE insulation, copper
screen and metal-laminated sheath
and their accessories (Test list 4P)
PART 5 Test requirements for cables with XLPE
insulation and metallic sheath and
their accessories
5-A Cables with XLPE insulation and metallic
sheath and their accessories (Test list 5A)
5-B Cables with XLPE insulation and lead or
lead alloy sheath and their accessories
(Test list 5B)
1)
5-C Cables with XLPE insulation and lead or
lead alloy sheath and their accessories
(Test list 5C)
5-D Cables with XLPE insulation and metallic
sheath and their accessories
(Test list 5D)
5-E Cables with XLPE insulation and lead or
lead alloy sheath and their accessories
(Test list 5E)
5-F Cables with XLPE insulation and lead or
lead alloy sheath and their accessories
(Test list 5F)
1)
5-G Cables with XLPE insulation and lead
sheath and their accessories (Test list 5G)
1)
5-H Cables with XLPE insulation and metallic
sheath and their accessories (Test list 5H)
5-I Cables with XLPE insulation and metallic
sheath and their accessories (Test list 5I)
1)
5-K Cables with XLPE insulation and lead
sheath and their accessories (Test list 5K)
5-L Cables with XLPE insulation and metallic
sheath and their accessories (Test list 5L)
5-M Cables with XLPE insulation and metallic
sheath and their accessories (Test list 5M)
2)
5-N Cables with XLPE insulation and lead
sheath and their accessories (Test list 5N)
5-O Cables with XLPE insulation and metallic
sheath and their accessories (Test list 5O)
1)
5-P Cables with XLPE insulation and lead alloy
sheath and their accessories (Test list 5P)

Page 0-5
PART 6
Test requirements for cables with EPR
insulation and metallic screen and
their accessories
6-A Cables with EPR insulation and metallic
screen and their accessories (Test list 6A)
1)
6-J Cables with HEPR insulation and copper
screen and their accessories (Test list 6J)
6-O Cables with EPR insulation and copper or
aluminium screen and their accessories
(Test list 6O)
PART 7 Test requirements for cables with EPR
insulation, metallic screen and metal-
laminated sheath and their accessories
7-A Cables with EPR insulation, metallic screen
and metal-laminated sheath and their
accessories (Test list 7A)
7-O Cables with EPR insulation, copper or
aluminium screen and copper or aluminium-
laminated sheath and their accessories
(Test list 7O)
PART 8
Test requirements for cables with EPR
insulation and metallic sheath and
their accessories
8-A Cables with EPR insulation and metallic
sheath and their accessories (Test list 8A)
1)
8-J Cables with HEPR insulation and metallic
sheath and their accessories (Test list 8J)
8-O Cables with EPR insulation and metallic
sheath and their accessories (Test list 8O)
PART 9
Test requirements for cables with PE or
HDPE insulation and metallic screen and
their accessories
9-A Cables with PE or HDPE insulation and
metallic screen and their accessories
(Test list 9A)
PART 10
Test requirements for cables with PE or
HDPE insulation, metallic screen and metal-
laminated sheath and their accessories
10-A Cables with PE or HDPE insulation, metallic
screen and metal-laminated sheath and
their accessories (Test list 10A)
1)
10-G Cables with PE or HDPE insulation and metal-
laminated screen and their accessories
(Test list 10G)
Page 0-6
PART 11 Test requirements for cables with PE or
HDPE insulation and metallic sheath and
their accessories
11-A Cables with PE or HDPE insulation and metallic
sheath and their accessories (Test list 11A)
1)
11-G Cables with PE or HDPE insulation and lead
sheath and their accessories (Test list 11G)

Page 1-0
Part 1
PART 1 – GENERAL TEST REQUIREMENTS
Replace the complete Part 1 by the following:

Page 1-1
Part 1
PART 1: GENERAL TEST REQUIREMENTS
CONTENTS
Page
1 General 3
...................................................................................................................................................
1.1 Scope 3
..............................................................................................................................................
1.2 Normative references 3
......................................................................................................................
1.3 Rated voltages 4
................................................................................................................................
1.4 Relationship of test voltages to rated voltages 4
................................................................................
1.5 Cable insulating materials 4
...............................................................................................................
1.6 Precautions against water penetration in cables 4
.............................................................................
1.7 Non-metallic cable sheathing materials 5
..........................................................................................
1.8 Cable characteristics 5
.......................................................................................................................
1.9 Accessory characteristics 5
................................................................................................................
1.10 Definitions concerning the tests 6
......................................................................................................
1.11 Definitions of dimensional values (thicknesses, cross-sections, etc.) 6
............................................
2 Test conditions 6
........................................................................................................................................
2.1 Ambient temperature 6
.......................................................................................................................
2.2 Frequency and waveform of power frequency test voltages 6
...........................................................
2.3 Waveform of impulse test voltage 7
...................................................................................................
3 Routine tests on cables 7
...........................................................................................................................
3.1 General 7
............................................................................................................................................
3.2 Partial discharge test 7
.......................................................................................................................
3.3 Voltage test 7
.....................................................................................................................................
3.4 Electrical test on non-metallic sheath 7
..............................................................................................
4 Sample tests on cables 7
...........................................................................................................................
4.1 General 7
............................................................................................................................................
4.2 Frequency of tests 8
...........................................................................................................................
4.3 Repetition of tests 8
...........................................................................................................................
4.4 Conductor examination 8
...................................................................................................................
4.5 Measurement of electrical resistance of conductor 8
.........................................................................
4.6 Measurement of thickness of insulation and non-metallic cable sheath 8
.........................................
4.7 Measurement of thickness of metallic sheath 9
.................................................................................
4.8 Measurement of diameter 10
.............................................................................................................
4.9 Hot set test for XLPE and EPR insulations 10
...................................................................................
4.10 Measurement of capacitance 10
........................................................................................................
4.11 Measurement of density of HDPE insulation 10
.................................................................................
5 Type tests on cables 11
.............................................................................................................................

Page 1-2
Part 1
5.1 General 11
..........................................................................................................................................
5.2 Range of type approval 11
.................................................................................................................
5.3 Summary of type tests 11
..................................................................................................................
5.4 Check on insulation thickness of cable for electrical type tests 12
....................................................
5.5 Electrical type tests on completed cable 12
.......................................................................................
5.6 Type tests on cable components 14
..................................................................................................
6 Type tests on systems, cable and accessories 17
.....................................................................................
6.1 General 17
..........................................................................................................................................
6.2 Test requirements 18
.........................................................................................................................
6.3 Partial discharge tests 18
...................................................................................................................
6.4 Heating cycle voltage test 19
.............................................................................................................
6.5 Impulse voltage test (followed by a.c. voltage test) 19
.......................................................................
6.6 Examination 19
..................................................................................................................................
7 Electrical tests after installation 19
.............................................................................................................
7.1 Insulation 19
.......................................................................................................................................
7.2 Non-metallic sheaths and outer protective covering of joints 20
........................................................
Tables 1 to 8 21
................................................................................................................................................
Annex A (normative) - Rounding of numbers 27
..............................................................................................
Annex B (spare) 28
..........................................................................................................................................
Annex C (normative) - Water penetration test 29
............................................................................................
Annex D (normative) - Tests of outer protection for buried joints 31
...............................................................

Page 1-3
Part 1
1 General
1.1 Scope
This standard specifies test requirements for power cables with extruded insulation, of the types listed
in 1.5 and their accessories, for rated voltages above 36 kV (U = 42 kV) up to and including 150 kV
m
(U = 170 kV) for fixed installations intended for transmission and distribution systems, and for use in
m
power generating plants and sub-stations.
However, the summary of tests as listed in one only of the particular sections in Parts 3 to 11 of this
HD is mandatory for the particular cables ordered.
In these parts each section is an individual alternative to Part 1.
Depending on the design and the system conditions, additional or even fewer tests or other
requirements which are not described in the Part 1 can be specified in these particular sections of
Parts 3 to 11.
The requirements apply to single-core cables and to three-core cables with separate cores and to their
accessories for usual conditions of installation and operation, but not to special cables and their
accessories, such as submarine cables, for which modifications to the standard tests may be
necessary or special test conditions may need to be devised.
1.2 Normative references
This Harmonization Document incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this Harmonization Document only when incorporated in it by amendment
or revision. For undated references the latest edition of the publication referred to applies (including
amendments).
EN 50265-2-1
Common test methods for cables under fire conditions - Test for resistance to vertical
flame propagation for a single insulated conductor or cable
Part 2-1: Procedures - 1 kW pre-mixed flame
EN 60230
Impulse tests on cables and their accessories
EN 60811-1-1 Insulating and sheathing materials of electric and optical cables - Common test methods
Part 1-1: General application - Measurement of thickness and overall dimensions –
Tests for determining the mechanical properties (IEC 60811-1-1)
EN 60811-1-2
Insulating and sheathing materials of electric cables - Common test methods
Part 1-2: General application - Thermal ageing methods (IEC 60811-1-2)
EN 60811-1-3
Insulating and sheathing materials of electric and optical cables - Common test methods
Part 1-3: General application - Methods for determining the density - Water absorption
tests - Shrinkage test (IEC 60811-1-3)
EN 60811-1-4
Insulating and sheathing materials of electric and optical cables - Common test methods
Part 1-4: General application - Tests at low temperature (IEC 60811-1-4)
EN 60811-2-1
Insulating and sheathing materials of electric and optical cables - Common test methods
Part 2-1: Methods specific to elastomeric compounds - Ozone resistance, hot set and
mineral oil immersion tests (IEC 60811-2-1)
EN 60811-3-1
Insulating and sheathing materials of electric cables - Common test methods
Part 3-1: Methods specific to PVC compounds - Pressure test at high temperature -
Tests for resistance to cracking (IEC 60811-3-1)
EN 60811-3-2
Insulating and sheathing materials of electric and optical cables - Common test methods
Part 3-2: Methods specific to PVC compounds - Loss of mass test - Thermal stability
test (IEC 60811-3-2)
Page 1-4
Part 1
EN 60811-4-1
Insulating and sheathing materials of electric cables - Common test methods
Part 4-1: Methods specific to polyethylene and polypropylene compounds - Resistance
to environmental stress cracking - Wrapping test after thermal ageing in air -
Measurement of the melt flow index - Carbon black and/or mineral content measurement
in PE (IEC 60811-4-1)
HD 383
Conductors of insulated cables - First supplement: Guide to the dimensional limits of
circular conductors (IEC 60228 and IEC 60228A, mod.)
HD 588.1
High-voltage test techniques -- Part 1: General definitions and test requirements
HD 605
Electric cables - Additional test methods
IEC 60183
Guide to the selection of high-voltage cables
IEC 60229
Tests on cable oversheaths which have a special protective function and are applied by
extrusion
IEC 60502-2
Power cables with extruded insulation and their accessories for rated voltages from 1 kV
(U = 1,2 kV) up to 30 kV (U = 36 kV)
m m
Part 2: Cables for rated voltages from 6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
IEC 60885-2
Electrical test methods for electric cables
Part 2: Partial discharge tests
IEC 60885-3
Electrical test methods for electric cables
Part 3: Test methods for partial discharge measurements on lengths of extruded power
cables
1.3 Rated voltages
In this standard the symbols U U and U are used to designate the rated voltages of cables and
0 m
,
accessories, where these symbols have the meanings given in IEC 60183.
1.4 Relationship of test voltages to rated voltages
Where test voltages are specified in this standard as multiples of the rated voltage U , the value of U
0 0
for the determination of the test voltages shall be as specified in Table 1.
For cables and accessories of rated voltages not shown in the table, the value of U for determination
of test voltages may be the same as for the nearest rated voltage which is given, provided that the
value of U for the cable and accessory is not higher than the corresponding value in the table.
m
Otherwise, and particularly if the rated voltage is not close to one of the values in the table, the value of
U on which the test voltages are based shall be the rated value, i.e. U divided by .
0 3
The test voltages in the standard are based on the assumption that the cables and accessories are
used on systems of category A, as defined in IEC 60183.
1.5 Cable insulating materials
This standard applies to cables insulated with the materials listed in Table 2, which also specifies for
cables with each type of insulating compound the maximum operating conductor temperatures on
which the specified test conditions are based.
1.6 Precautions against water penetration in cables
A water impermeable barrier around the cable is recommended. Tests for radial water penetration are
not included in this standard.
A test for longitudinal water penetration is given in 5.6.16.

Page 1-5
Part 1
1.7 Non-metallic cable sheathing materials
Tests are specified for four types of non-metallic sheath, as follows:
-ST and ST based on PVC;
1 2
-ST and ST based on polyethylene.
3 7
The choice of the type of sheath will depend on the design of the cable and the mechanical and
thermal constraints during operation.
NOTE  The temperature limits given in IEC 60502-2 need not apply to this standard.
1.8 Cable characteristics
For the purpose of carrying out and recording the tests described in this standard, the following
characteristics shall be known or declared.

1.8.1 Rated voltage: values shall be given for U , U, U (see 1.3 and 1.4).
0 m
1.8.2 Type of conductor, its material and nominal cross-sectional area, in square millimetres.
Presence, if any, and nature of measures taken to achieve longitudinal watertightness.
1.8.3 If the nominal cross-sectional area is not in accordance with HD 383, the d.c. conductor
resistance shall be declared.
1.8.4 Nature of insulating material (see 1.5). If the insulation is XLPE, special additives shall be
declared if the higher value of tan  according to Table 2 is valid.
δ
1.8.5 Nominal thickness of insulation.
1.8.6 Presence, if any, and nature of watertightness measures in screening area.
1.8.7 Nature and construction of metallic sheath, if any. Otherwise, nature, construction and
thickness of metallic screen.
1.8.8 Nature of non-metallic sheathing material.
1.8.9 Nominal diameter over conductor (d).
1.8.10 Nominal diameter over completed cable (D).
1.8.11 Nominal capacitance between conductor and metallic screen/sheath.
1.9 Accessory characteristics
For the purpose of carrying out and recording the tests described in this standard, the following
characteristics shall be known or declared.
1.9.1 Cables used for testing shall comply with Clauses 1 to 5 and shall be correctly identified as
in 1.8.
1.9.2 Conductor connectors used within the accessories shall be correctly identified with respect to:
- assembly technique,
- tooling and necessary setting,
- preparation of contact surfaces,
- type, reference number and any other identification of the connector.
1.9.3 Accessories to be tested shall be correctly identified with respect to:
- name of manufacturer,
- type, designation, manufacturing date or date code,
- rated voltage (see 1.8.1 above),
- installation instructions (reference and date).

Page 1-6
Part 1
1.10 Definitions concerning the tests
NOTE  Tests classified as Sample (S) or Routine (R) may be required as part of any type approval scheme.
1.10.1 Routine tests (Symbol R)
Tests made by the manufacturer on each manufactured length of cable to check that the whole of each
length meets the specified requirements.
1.10.2 Sample tests (Symbol S)
Tests made by the manufacturer on samples of completed cable or components taken from a
completed cable, at a specified frequency, so as to verify that the finished product meets the specified
requirements.
1.10.3 Type tests (Symbol T)
Tests made before supplying on a general commercial basis a type of cable or cable and accessories
covered by this standard, in order to demonstrate satisfactory performance characteristics to meet the
intended application. Once successfully completed, these tests need not be repeated, unless changes
are made in the cable or accessory materials, or design or manufacturing process which might change
the performance characteristics.
1.10.4 Electrical tests after installation
Tests made to demonstrate the integrity of the cable and its accessories as installed.
1.11 Definitions of dimensional values (thicknesses, cross-sections, etc.)
1.11.1 Nominal value
Value by which a quantity is designated and which is often used in tables.
NOTE  Usually, in this standard, nominal values give rise to values to be checked by measurements taking into account
specified tolerances.
1.11.2 Median value
When several test results have been obtained and ordered in an increasing (or decreasing)
succession, middle value if the number of available values is odd, and mean of the two middle values if
the number is even.
2 Test conditions
2.1 Ambient temperature
Unless otherwise specified in the details for the particular test, tests shall be carried out
at an ambient temperature of (20 ± 15) °C.
2.2 Frequency and waveform of power frequency test voltages
The frequency of the alternating test voltages shall be in the range 49 Hz to 61 Hz. The waveform shall
be substantially sinusoidal. The values quoted are r.m.s. values.

Page 1-7
Part 1
2.3 Waveform of impulse test voltage
In accordance with EN 60230 the impulse wave shall have a virtual front time between 1 µs and 5 µs
and a nominal time to half the peak value between 40 µs and 60 µs. In other respects the impulse
wave shall be in accordance with HD 588.1.
3 Routine tests on cables
3.1 General
The following tests shall be carried out on each manufactured length of cable, to check that the whole
of each length complies with the requirements.
(a) partial discharge test (see 3.2),
(b) voltage test (see 3.3),
(c) electrical test on non-metallic sheath, if required (see 3.4).
The applicability of the test on the non-metallic sheath, in item (c) above, when the test is specified in
the particular contract or order, depends upon the function of the sheath in the installation (see
IEC 60229). Therefore this test shall only be carried out when required for the particular contract.
The order in which these tests are carried out is at the discretion of the manufacturer, to suit the testing
arrangements.
3.2 Partial discharge test
The partial discharge test shall be carried out in accordance with IEC 60885-3, except that the
sensitivity as defined in IEC 60885-3 shall be 10 pC or better.
The test voltage shall be raised gradually to and held at 1,75 U for 10 s and then slowly reduced to
1,5 U .
The magnitude of the discharge at 1,5 U shall not exceed 10 pC.
3.3 Voltage test
The voltage test shall be made at ambient temperature using an alternating test voltage at power
frequency.
The test voltage shall be raised gradually to the specified value which shall then be held for 30 min
between the conductor and metallic screen/sheath.
The test voltage shall be 2,5 U (see Table 1).
No breakdown of the insulation shall occur.
3.4 Electrical test on non-metallic sheath
If required for the particular contract or order, the non-metallic sheath shall be subjected to the routine
electrical test specified in IEC 60229.
4 Sample tests on cables
4.1 General
The following tests shall be carried out on samples which, for the tests in items (b) and (g) may be
,
complete drum lengths of cable, taken to represent batches.
(a) conductor examination (see 4.4),
(b) measurement of electrical resistance of conductor (see 4.5),

Page 1-8
Part 1
(c) measurement of thickness of insulation and non-metallic sheath (see 4.6),
(d) measurement of thickness of metallic sheath (see 4.7),
(e) measurement of diameters, if required (see 4.8),
(f) hot set test for XLPE and EPR insulations (see 4.9),
(g) measurement of capacitance (see 4.10),
(h) measurement of density of HDPE insulation (see 4.11).
4.2 Frequency of tests
The sample tests shall be carried out on one length from each manufacturing series of the same type
and cross-section of cable, but shall be limited to not more than 10 % of the number of lengths in any
contract, rounded to the upper unity.
4.3 Repetition of tests
If the samples from any length selected for the tests fail in any of the tests in Clause 4, further samples
shall be taken from two further lengths of the same batch and subjected to the same tests as those in
which the original sample failed. If both additional cables pass the tests, the other cables in the batch
from which they were taken shall be regarded as having complied with the requirements of this
standard. If either fail, this batch of cables shall be regarded as having failed to comply.
Further re-sampling and testing should then become a matter of negotiation.
4.4 Conductor examination
Compliance with the requirements of HD 383 for conductor construction shall be checked by inspection
and measurement when practicable.
4.5 Measurement of electrical resistance of conductor
The completed cable length, or a sample thereof, shall be placed in the test room, which shall be
maintained at a reasonably constant temperature for at least 12 h before the test. If there is a doubt
that the conductor temperature is not the same as the room temperature, the resistance shall be
measured after the cable has been in the test room for 24 h. Alternatively, the resistance can be
measured on a sample of conductor, conditioned for at least 1 h in a temperature-controlled liquid
bath.
The d.c. resistance of the conductor shall be corrected to a temperature of 20 °C and 1 km length in
accordance with the formulae and factors given in HD 383.
The d.c. resistance of the conductor at 20 °C shall not exceed the appropriate maximum value
specified in HD 383 if applicable.
4.6 Measurement of thickness of insulation and non-metallic cable sheath
4.6.1 General
The test method shall be in accordance with Clause 8 of EN 60811-1-1.
Each cable length selected for the test shall be represented by a piece taken from one end after having
discarded, if necessary, any portion that may have suffered damage.

Page 1-9
Part 1
4.6.2 Requirements
(a)
Insulation
The lowest measured thickness at any point shall not fall below 90 % of the nominal thickness:
t 0,90 t
≥
min n
and additionally:
t -t
max min
0,15
≤
t
max
where
t is the maximum thickness, in millimetres;
max
t is the minimum thickness, in millimetres;
min
t is the nominal thickness, in millimetres.
n
NOTE  t and t are measured at one and the same cross-section of the insulation.
max min
The thickness of the semi-conducting screens on the conductor and over the insulation shall not be
included in the thickness of the insulation.
(b)
Non-metallic cable sheath
The lowest measured thickness shall not fall below the nominal thickness by more than 0,1 mm + 15 %
of the nominal thickness, i.e:
t t - (0,1 + 0,15 t )
min n n
≥
where
t is the minimum thickness, in millimetres;
min
t is the nominal thickness, in millimetres.
n
In addition, for sheaths applied onto a substantially smooth surface the average of the measured
values, rounded to 0,1 mm in accordance with Annex A, shall be not less than the nominal thickness.
The latter requirement does not apply to sheaths applied onto an irregular surface, such as one formed
by metallic screens of wires and/or tapes.
4.7 Measurement of thickness of metallic sheath
The following tests apply if the cable has a metallic sheath of lead, lead alloy or aluminium.
4.7.1 Lead or lead alloy sheath
If the cable has a lead or lead alloy sheath, the minimum thickness of the metallic sheath shall not fall
below the nominal thickness by more than 0,1 mm + 5 % of the nominal thickness, i.e:
t t - (0,1 + 0,05 t )
min n n
≥
where
t is the minimum thickness, in millimetres;
min
t is the nominal thickness, in millimetres.
n
The thickness of the lead sheath shall be measured by one of the methods given in 2.1.5 of HD 605, at
the discretion of the manufacturer.

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4.7.2 Plain or corrugated aluminium sheath
If the cable has an aluminium sheath, the minimum thickness of the metallic sheath shall not fall below
the nominal thickness by more than:
0,1 mm + 10 % of the nominal thickness for plain aluminium sheath, i.e:
t t - (0,1 + 0,1 t )
min n n
≥
0,1 mm + 15 % of the nominal thickness for corrugated aluminium sheath, i.e:
t t - (0,1 + 0,15 t )
min n n
≥
where
t is the minimum thickness, in millimetres;
min
t is the nominal thickness, in millimetres.
n
The measurement shall be made with a micrometer having ball noses of radii about 3 mm. The
accuracy shall be 0,01 mm.
±
The measurement shall be made on a ring of sheath, about 50 mm wide, carefully removed from the
completed cable. The thickness shall be determined at a sufficient number of points around the
circumference of the ring to ensure that the minimum thickness is measured.
4.8 Measurement of diameter
If the purchaser requires that the diameter of the core and/or the overall diameter of the cable shall be
measured, the measurements shall be carried out in accordance with 8.3 of EN 60811-1-1.
4.9 Hot set test for XLPE and EPR insulations
4.9.1 Procedure
The sampling and test procedure shall be carried out in accordance with Clause 9 of EN 60811-2-1,
employing the test conditions given in Table 6.
The test pieces shall be taken from the inner, middle or outer part of the insulation where the degree of
cross-linking is generally the lowest for the curing process employed.
4.9.2 Requirements
The test results shall comply with the requirements given in Table 6.
4.10 Measurement of capacitance
The capacitance shall be measured between conductor and metallic screen/sheath.
The measured value shall not exceed the nominal value declared by the manufacturer by more than
8 %.
4.11 Measurement of density of HDPE insulation
4.11.1 Procedure
The density of HDPE shall be measured using the sampling and test procedure given in Clause 8 of
EN 60811-1-3.
4.11.2 Requirements
The results of the test shall comply with the requirements given in Table 6.

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5 Type tests on cables
5.1 General
The appropriate type tests specified in this clause shall be made in accordance with the definition in
1.10.3, except that those also required as sample tests in Clause 4 shall be repeated as appropriate to
that clause.
5.2 Range of type approval
When the type tests have been successfully performed on one type of cable with a specific value of
rated voltage on one cable sample or two samples with different cross-sectional areas of conductors,
the type approval shall be accepted as valid also for:
(a) cables with the same cross-sectional area of conductor, with slightly different rated voltage but
belonging to the same voltage group as the tested cable.
NOTE  In this context, cables of the same rated voltage group are those of rated voltages having a common value of U ,
m
highest voltage for equipment, and therefore the same test voltage levels (see 1.4). For example, tests on a cable of
rated voltage U = 66 kV would also cover cables of rated voltages U = 60 kV and U = 69 kV.
(b) cables of similar construction, in the same rated voltage group and with the same cross-sectional
areas of conductor.
NOTE  Cables of similar construction are those having the same type and manufacturing process of insulation material
and the same forms of semi-conducting screens. Repetition of the electrical type tests (see 5.5) is not necessary on
account of differences in the protective layers applied over the screened cores, unless these are likely to have a
significant effect on the results of the test. However it should be noted that, as this standard is confined to test
requirements and does not specify cable constructions, the possible effects on the electrical type test resulting from
variations in coverings over the core cannot be dealt with in detail. In some instances it may be appropriate to repeat one
or more of the tests listed in 5.5 (e.g. the bending test) when the coverings of the cable under consideration differ from
the cable which has previously been subjected to the full electrical type tests.
(c) cables in the same rated voltage group with all cross-sectional areas of conductor Iying between
the two on which the tests were made, provided that the design insulation thicknesses for the
intermediate cross-sectional areas give calculated values of maximum electrical stress at the
conductor screen not higher than that applying to the smaller cross-sectional area of cable tested,
and that the thicknesses are also not less than the thickness of the larger cross-sectional area
tested.
Furthermore, subject to agreement between manufacturer and purchaser, tests successfully
completed on cables of one voltage rating may be taken as demonstrating satisfactory performance of
cables of a lower voltage rating, provided that the same processing techniques are used by the
manufacturer for both voltages and that the operating electrical stresses are not higher for the cables
of lower voltage rating.
The type tests on cable components (see 5.6) are also subject to agreement between manufacturer
and purchaser and need not be carried out on samples from cables of different voltage ratings and/or
conductor cross-sectional areas unless different materials are used to produce them. However
repetition of the ageing tests on pieces of completed cable to check compatibility of materials
(see 5.6.5) may be required if the combination of materials applied over the screened core is different
from that of the cable on which type tests have been carried out previously.
A type test certificate signed by the representative of a competent witnessing body, or a report by the
manufacturer giving the test results and signed by the appropriate qualified officer shall be acceptable
as evidence of type testing.
5.3 Summary of type tests
The type tests shall comprise the electrical tests on the completed cable, as specified in 5.5, and the
appropriate non-electrical tests on cable components and completed cable, as specified in 5.6.

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Part 1
The electrical tests shall be carried out in sequence on one sample of cable, except as provided for in
5.5.2. The bending test shall be included in this sequence of tests to check that the electrical properties
of the cable after bending are satisfactory.
The non-electrical tests on cable components and completed cable are summarised in Table 3,
indicating which tests are applicable to each insulation and sheathing material. The test under fire
conditions is only required if the manufacturer wishes to claim compliance with this test as a special
feature of the design of the cable.
5.4 Check on insulation thickness of cable for electrical type tests
Prior to the electrical type tests, the insulation thickness shall be measured by the method specified in
8.1 of EN 60811-1-1 on a representative piece of the length to be used f
...