SIST EN 50182:2002

SLOVENSKI STANDARD
01-september-2002
9RGQLNL]DQDG]HPQHYRGH9UYLL]NRQFHQWULþQRVXNDQLKRNURJOLKåLF
Conductors for overhead lines - Round wire concentric lay stranded conductors
Leiter für Freileitungen - Leiter aus konzentrisch verseilten runden Drähten
Conducteurs pour lignes aériennes - Conducteurs à brins circulaires, câblés en couches
concentriques
Ta slovenski standard je istoveten z: EN 50182:2001
ICS:
29.060.10 Žice Wires
29.240.20 Daljnovodi Power transmission and
distribution lines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50182
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2001
ICS 29.060.10
English version
Conductors for overhead lines -
Round wire concentric lay stranded conductors
Conducteurs pour lignes aériennes - Leiter für Freileitungen -
Conducteurs à brins circulaires, câblés Leiter aus konzentrisch verseilten
en couches concentriques runden Drähten
This European Standard was approved by CENELEC on 2000-11-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any
other language made by translation under the responsibility of a CENELEC member into its own
language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, 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
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50182:2001 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 7, Overhead
electrical conductors.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50182 on 2000-11-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2001-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-11-01
Annexes designated "normative" are part of the body of the standard. Annexes designated
"informative" are given for information only. In this standard, annexes A, B, C and E are
normative and annexes D and F are informative.

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Contents
1 Scope.4
2 Normative references.4
3 Definitions.4
4 Designation system .5
5 Requirements for stranded conductor.6
6 Tests.10
7 Packaging and marking. 15
8 Information to be clarified by the purchaser and manufacturer. 16
Annex A (normative) Special national conditions. 17
Annex B (normative) Calculation of nominal mass of grease for stranded conductors . 18
Annex C (normative) Stress - strain test method . 21
Annex D (informative) Lay ratios used for calculation of increments due to stranding
in Table 4 . 24
Annex E (normative) Test for ability of a conductor to be erected using tension stringing. 25
Annex F (informative) Conductors in frequent use in some member countries. 27

1 Scope
This European Standard specifies the electrical and mechanical characteristics of round wire
concentric lay bare overhead electrical conductors stranded in alternate directions, with or
without grease as per EN 50326, made of one or a combination of any of the following:
a) Hard drawn Aluminium as per EN 60889 designated AL1
b) Aluminium alloy as per EN 50183 designated AL2 to AL7
c) Zinc coated steel wire as per EN 50189 with grade and class designated ST1A, ST2B,
ST3D, ST4A, ST5E, and ST6C.
d) Aluminium-clad steel wire as per EN 61232 with class designation 20SA (grades A and
B), 27SA, 30SA and 40SA.
Conductors made of zinc coated steel wires only are not included.
2 Normative references
This European standard 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 European standard only when incorporated
in it by amendment or revision. For undated references the latest issue of the publication
referred to applies.
EN 50183 Conductors for overhead lines — Aluminium-magnesium-silicon alloy wires
EN 50189 Conductors for overhead lines — Zinc coated steel wires
1)
EN 50326 Conductors for overhead lines — Characteristics of greases
EN 60889 Hard-drawn aluminium wire for overhead line conductors.
EN 61232 Aluminium-clad steel wires for electrical purposes.
IEC 60050-466 International Electrotechnical Vocabulary (IEV) - Chapter 466: Overhead Lines.
3 Definitions
In addition to the definitions given in IEC 60050-466, the following definitions apply:
3.1
aluminium
for the purposes of this standard, aluminium is used as a generic term to mean hard drawn
aluminium and aluminium alloy
3.2
direction of lay
the direction of lay is defined as right hand or left hand. With right hand lay, the wires conform
to the direction of the central part of the letter Z when the conductor is held vertically. With left
hand lay the wires conform to the central part of the letter S when the conductor is held
vertically
———————
1)
At draft stage
- 5 - EN 50182:2001
3.3
lay ratio
the ratio of the lay length to the external diameter of the corresponding layer of wires in the
stranded conductor
3.4
lot
a group of conductors manufactured by the same manufacturer under similar conditions of
production
NOTE 1  A lot may consist of part of or all the purchased quantity.
NOTE 2  The constitution of a lot may be agreed between the purchaser and the manufacturer
3.5
nominal
the target value of a measurable property by which a conductor or component of a conductor is
identified and to which tolerances are applied
3.6
wire
a filament of drawn metal having a constant circular cross-section
3.7
rated tensile strength
an estimate of the conductor breaking load calculated using the specified tensile properties of
the component wires
4 Designation system
4.1 A designation system is used to identify stranded conductors made of aluminium with
or without steel wires.
4.2 Homogeneous aluminium conductors are designated ALx, where x identifies the type of
aluminium. Homogeneous aluminium clad steel conductors are designated yzSA where y
represents the type of steel (Grade A or B, applicable to class 20SA only), and z represents
the class of aluminium cladding (20, 27, 30 or 40).
4.3 Composite aluminium/zinc coated steel conductors are designated ALx/STyz, where
ALx identifies the external aluminium wires (envelope), and STyz identifies the steel core. In
the designation of zinc coated steel wires, y represents the type of steel (Grades 1 to 6) and z
represents the class of zinc coating (A to E).
4.4 Composite aluminium/aluminium-clad steel conductors are designated ALx/yzSA,
where ALx identifies the external aluminium wires (envelope), and yzSA identifies the steel
core as in 4.2.
4.5 Conductors are identified as follows:
(a) a code number giving the nominal area, rounded to an integer, of the aluminium or steel
as appropriate;
(b) a designation identifying the type of wires constituting the conductor. For composite
conductors the first description applies to the envelope and the second to the core.

EXAMPLES:
16-AL1: 2
Conductor of AL1 aluminium with an area of 15,9 mm ,
rounded to 16 mm .
587-AL2:
Conductor of AL2 aluminium with an area of 586,9 mm ,
2.
rounded to 587 mm
401-AL1/28-ST1A:
Conductor made of AL1 aluminium wires around a core of
ST1A zinc coated steel wires with a Class A zinc coating.
The integer area of AL1 wires is 401 mm and that of the
ST1A wires 28 mm .
401-AL1/28-A20SA:
Conductor made of AL1 aluminium wires around a core of
grade A, class 20 aluminium-clad steel wires. The integer
area of AL1 wires is 401 mm and that of the A20SA wires
28 mm .
65-A20SA:
Conductor made of grade A, class 20 aluminium clad steel
wires with an area of 65 mm .
5 Requirements for stranded conductor
5.1 Material
The stranded conductor shall be made from wires and with grease, whenever greased
conductor is specified, as defined in clause 1.
5.2 Conductor sizes
Lists of conductor sizes in frequent use in some of the member countries are given as
guidance in annex F. Conductors for existing or established designs of overhead lines as well
as sizes and strandings not included in this standard may be designed and supplied as agreed
upon by the manufacturer and purchaser, and the relevant requirements of this standard shall
apply.
5.3 Surface condition
The surface of the conductor shall be free from all imperfections visible to the unaided eye
(normal corrective lenses accepted), such as nicks, indentations, etc., not consistent with good
commercial practice.
5.4 Conductor diameter
The conductor diameter shall not vary from the nominal value, specified by the purchaser, by
more than:
± 1 % for diameters larger or equal to 10 mm.
± 0,1 mm for diameters smaller than 10 mm.
5.5 Stranding
5.5.1 All wires of the conductor shall be concentrically stranded.
5.5.2 Adjacent wire layers shall be stranded with reverse lay directions. The direction of lay
of the external layer shall be right hand except when otherwise specified by the purchaser.

- 7 - EN 50182:2001
5.5.3 The wires in each layer shall be evenly and closely stranded around the underlying wire
or wires.
5.5.4 The lay ratios for the zinc coated or aluminium-clad steel wire layers shall be as given
in Table 1.
Table 1 - Lay ratios for zinc coated or aluminium-clad steel layers
Number of Lay ratio
steel wires 3 wire layer 6 wire layer 12 wire layer 18 wire layer
Min. Max. Min. Max. Min. Max. Min. Max.
3 16 26 - - - - - -
7 - - 16 26 - - - -
19 - - 16 26 14 22 - -
37 - - 17 25 16 22 14 18
For zinc coated or aluminium-clad steel core constructions exceeding 37 wires, the lay ratio of the
outer layer shall lie between 14 and 18, and the lay ratio of the inner layers shall lie between 16
and 26.
5.5.5 The lay ratios for the aluminium layers of all types of conductor shall be as given in
Table 2.
Table 2 - Lay ratios for aluminium layers
All inner layers Outer layer
Min. Max. Min. Max.
10 16 10 14
5.5.6 In a multi-layer conductor, the lay ratio of any layer shall be equal to or less than the
lay ratio of the layer immediately beneath it.
5.5.7 All steel wires shall lie naturally in their position in the stranded core, and where the
core is cut, the wire ends shall remain in position or be readily replaced by hand and then
remain approximately in position. This requirement also applies to the aluminium wires of a
conductor.
5.5.8 Before stranding, aluminium and steel wires shall have approximately equal
temperatures.
5.5.9 The conductor shall have the ability to be installed, using the purchaser's
recommended installation method, without damage to the conductor. If required, this shall be
demonstrated according to 6.4.9.
5.6 Joints
5.6.1 For conductors containing only one steel wire there shall be no joints made after heat
treatment of the wire or rod. There shall be no joints of any kind made in the finished zinc
coated or aluminium-clad steel core wire or wires during stranding.
5.6.2 No more than one jointed aluminium finished wire before stranding, as permitted in the
relevant standard given in clause 2, shall be used per length of conductor.
5.6.3 During stranding, no aluminium wire welds shall be made for the purpose of achieving
the required conductor length.

5.6.4 Joints are permitted in aluminium wires unavoidably broken during stranding, provided
such breaks are not associated with either inherently defective wire or with the use of short
lengths of aluminium wires. Joints shall conform to the geometry of the original wire, i.e. joints
shall be dressed smoothly with a diameter equal to that of the parent wires and shall not be
kinked.
The number of joints in aluminium wires shall not exceed those specified in Table 3. These
joints shall not be closer than 15 m from a joint in the same wire or in any other aluminium
wire of the completed conductor.
Joints shall be made by electric butt welding, cold pressure welding or other methods approved
by the purchaser. The first type of joint shall be electrically annealed for approximately 250
mm on both sides of the weld.
5.6.5 While the joints specified in 5.6.4 are not required to meet the requirements of
unjointed wires, they shall withstand a stress of not less than 75 N/mm² for annealed electric
butt welded joints, and not less than 130 N/mm² for cold pressure joints.
Table 3 - Number of joints permitted in a given length
Conductor length L (m) Number of joints
permitted
Number of aluminium layers
12 3 4
L  1 500 - - - 2
1 500 < L  2 000 L  1 500 - - 3
L > 2 000 1 500 < L  2 000 L  1 500 - 4
L  1 500 5
- 2 000 < L  2 500 1 500 < L  2 000
2 000 < L  2 500 1 500 < L  2 000 6
- L > 2 500
- - 2 500 < L  3 000 2 000 < L  2 500 7
- - 3 000 < L  3 500 2 500 < L  3 000
- 9
- L > 3 500 3 000 < L  3 500
- -
- 3 500 < L  4 000
- - - L > 4 000
5.7 Conductor mass per unit length
5.7.1 The conductor masses given in the Tables of annex F have been calculated for each
size and stranding of conductor using densities for the aluminium, aluminium clad steel and
zinc coated steel wires as given in the standards listed in clause 2. The masses do not include
the mass of grease. The calculation of cross-sectional areas for aluminium, aluminium clad
steel and zinc coated steel are based on the nominal diameter.
5.7.2 With the exception of the centre wire, all wires are longer than the stranded conductor
and the increase in mass depends on the lay ratio used.
The increments, in per cent, for mass due to stranding, shall be as given in Table 4, which
have been calculated using the commonly used lay ratios for each applicable layer of
aluminium or steel wire given in annex D.
Where an oversize centre wire (king wire) is used, the appropriate increase in mass shall be
applied.
5.7.3 The mass per unit length of the conductor without grease shall not vary from its
nominal value by more than ± 2 %.

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Table 4 - Increments due to stranding
Stranding of conductor Increment (increase) (%)
Aluminium Steel Mass Electrical resistance
No. of No. of No. of No. of Aluminium Zn coated or Aluminium Aluminium-
wires layers * wires layers * Al. clad steel clad steel
7 1 - - 1,11 - 1,11 -
19 2 - - 1,68 - 1,68 -
37 3 - - 2,03 - 2,03 -
61 4 - - 2,36 - 2,36 -
91 5 - - 2,78 - 2,78 -
127 6 - - 2,75 - 2,75 -
1,39 -
6 1 1 - 1,39 -
8 1 1 - 1,66 - 1,66 -
18 2 1 - 1,82 - 1,82 -
9 1 3 1 1,91 0,34 1,91 0,34
6 1 7 1 1,51 0,52 1,51 0,52
1 2,01 0,52 2,01 0,52
10 1 7
12 1 7 1 2,17 0,52 2,17 0,52
14 1 7 1 2,30 0,52 2,30 0,52
18 2 7 1 1,94 0,52 1,94 0,52
22 2 7 1 2,07 0,52 2,07 0,52
24 2 7 1 2,13 0,52 2,13 0,52
26 2 7 1 2,18 0,52 2,18 0,52
28 2 7 1 2,22 0,52 2,22 0,52
30 2 7 1 2,26 0,52 2,26 0,52
32 2 7 1 2,30 0,52 2,30 0,52
36 2 7 1 2,37 0,52 2,37 0,52
42 3 7 1 2,20 0,52 2,20 0,52
45 3 7 1 2,23 0,52 2,23 0,52
48 3 7 1 2,26 0,52 2,26 0,52
54 3 7 1 2,31 0,52 2,31 0,52
72 4 7 1 2,40 0,52 2,40 0,52
84 4 7 1 2,46 0,52 2,46 0,52
2,50 0,82
14 1 19 2 2,50 0,82
15 1 19 2 2,56 0,82 2,56 0,82
16 1 19 2 2,61 0,82 2,61 0,82
18 1 19 2 2,70 0,82 2,70 0,82
30 2 19 2 2,36 0,86 2,36 0,86
32 2 19 2 2,41 0,86 2,41 0,86
36 2 19 2 2,48 0,86 2,48 0,86
2 2,57 0,86 2,57 0,86
42 2 19
54 3 19 2 2,26 0,79 2,26 0,79
38+22 3 19 2 2,22 0,79 2,22 0,79
42+20 3 19 2 2,18 0,79 2,18 0,79
66 3 19 2 2,34 0,79 2,34 0,79
78 3 19 2 2,40 0,79 2,40 0,79
96 4 19 2 2,46 0,79 2,46 0,79
100 4 19 2 2,47 0,79 2,47 0,79
18 1 37 3 2,70 1,09 2,70 1,09
24 1 37 3 2,91 1,09 2,91 1,09
72 3 37 3 2,43 0,96 2,43 0,96
54+66 4 37 3 2,32 0,86 2,32 0,86
150 5 37 3 2,38 0,86 2,38 0,86
* Number of layers of each type of wire, not including the centre wire.

5.8 Grease
5.8.1 Whenever a greased conductor is specified, the grease shall meet the requirements of
EN 50326 and shall be applied before the closing die.
5.8.2 Greases with different designations or from different manufacturers shall not be mixed
within a length of conductor.
5.8.3 The mass of grease shall not vary by more than ± 20 % from the calculated value
obtained using the method described in annex B.
5.9 Conductor rated tensile strength
5.9.1 The rated tensile strength of a homogeneous aluminium or aluminium clad steel
conductor shall be taken as the sum of the minimum tensile strength of all the wires as defined
in 5.9.3.
5.9.2 The rated tensile strength of composite ALx/STyz or ALx/yzSA conductors shall be the
sum of the minimum tensile strength of the aluminium portion plus the minimum tensile
strength of steel (zinc coated or aluminium clad) corresponding to an elongation compatible
with that of aluminium at rupture load. For purpose of specification and practicability, this
strength is taken as the tensile stress corresponding to 1 % elongation in a 250 mm gauge
length before stranding.
5.9.3 The minimum tensile strength of any single wire is the product of its nominal area and
the appropriate minimum stress given in the standards referenced in clause 2.
5.10 Nominal d.c. resistance
The nominal d.c. resistance at 20 °C of a conductor, expressed in /km to three significant
figures, is based on the resistivity value for calculation purposes and on the nominal diameter
of the aluminium and aluminium clad steel wires referenced in clause 2, increased by the
increments in Table 4 of this standard. For ALx/yzSA and yzSA conductors the Tables in
annex F give two resistance values, a value calculated using both the aluminium and steel
portions of the aluminium clad steel wires, and a value calculated using the aluminium portion
only.
6Tests
6.1 Classification of tests
Type tests are intended to verify the main characteristics of a conductor which depend mainly
on its design. These tests are normally performed only once for a given conductor
construction.
Sample tests are intended to guarantee the quality of conductors and compliance with the
requirements of this standard.
Both type and sample tests are listed in Table 5.

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Table 5 - Type and sample tests for conductors
Type test Sample Clause
test
Conductor - surface condition x x 6.4.1
- diameter x x 6.4.2
- inertness x x 6.4.3
- lay ratio and direction of lay x x 6.4.4
- number and type of wires x x 6.4.5
- mass per unit length x x 6.4.6
- stress-strain curve (1) - 6.4.7
- tensile breaking strength (1) - 6.4.8
- stringing test (1) - 6.4.9
Aluminium wires - diameter x x 6.5.2
- tensile strength x x 6.5.2
- elongation (2) x x 6.5.2
- resistivity x x 6.5.2
- wrapping test x x 6.5.2
- welding x - 6.5.3
Zinc coated - diameter x x 6.5.2
Steel wires - tensile strength x x 6.5.2
- stress at 1 % extension x x 6.5.2
- elongation or torsion test x x 6.5.2
- wrapping test x x 6.5.2
- mass of zinc x x 6.5.2
- zinc dip test x x 6.5.2
- adhesion of zinc coating x x 6.5.2
Aluminium-clad - diameter x x 6.5.2
Steel wires - tensile strength x x 6.5.2
- stress at 1 % extension x x 6.5.2
- elongation x x 6.5.2
- torsion x x 6.5.2
- cladding thickness/uniformity x x 6.5.2
- resistivity x x 6.5.2
Grease - mass per unit length x x 6.6.1
- drop point x x 6.6.2
(1) By agreement between the purchaser and manufacturer.
(2) Elongation test for AL1 is not required.

6.2 Sample size
When agreed by the manufacturer and the purchaser at the time of ordering, tests shall be
carried out on a minimum of 10 % of the drums offered for inspection and, in such cases, each
wire shall be tested. Where the manufacturer has a demonstrated capability of meeting or
exceeding the requirements, the number of test samples may be reduced, with the agreement
of the purchaser and manufacturer, to a level which ensures that each production lot of
conductor is given adequate monitoring.
Drums to be sampled shall be selected at random, and samples taken from the outer end of
the drums.
The length of the sample of conductor taken shall be sufficient to allow all tests to be
performed on the same specimens of wire.
In order to check the grease, a sample of conductor shall be taken from one drum of each
inspection lot.
6.3 Rounding rules
The following rounding rules shall be used for determination of compliance with this standard.
6.3.1 When the figure immediately after the last figure to be retained is less than 5, the last
figure to be retained remains unchanged.
6.3.2 When the figure immediately after the last figure to be retained is greater than 5, or
equal to 5 and followed by at least one figure other than zero, the last figure to be retained is
increased by one.
6.3.3 When the figure immediately after the last figure to be retained is equal to 5 and
followed by zeros only, the last figure to be retained remains unchanged if even and is
increased by one if odd.
6.4 Properties of conductor
6.4.1 Surface condition
The surface of the conductor shall comply with the requirements of 5.3.
6.4.2 Conductor diameter
The conductor diameter shall be measured either:
(a) midway between the closing die and the capstan on the stranding machine, or
(b) at the middle of a portion of conductor, at least 3 m long and more than 5 m from either
end of the conductor, under a tension of at least 2 % of the conductor rated tensile
strength.
The diameter shall be the average of two readings, rounded to two decimals of a millimetre,
taken at right angles to each other at the same location.
The value obtained shall comply with the requirement of 5.4.
6.4.3 Inertness
The requirement of 5.5.7 shall be met.

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6.4.4 Lay ratio and direction of lay
The lay ratio of a given layer of the conductor shall be obtained by dividing the measured lay
length by the diameter of the layer.
The values obtained shall comply with the requirements of 5.5. In addition the direction of
each layer shall be noted and shall also comply with the requirements of 5.5.
6.4.5 Number and type of wires
The number and type of wires shall be confirmed as being in accordance with the conductor
designation stated on the order.
6.4.6 Mass per unit length
The mass per unit length of a 1m sample of conductor shall be determined by using apparatus
capable of achieving an accuracy of ± 0,1 %. The value obtained shall comply with the
requirement of 5.7.3.
6.4.7 Stress-strain curves
6.4.7.1If the provision of stress-strain curves is agreed between the manufacturer and
purchaser at the time of placing the order, the method described in annex C shall be used.
6.4.7.2 Stress-strain curves shall be supplied as a type test when requested by the purchaser
and shall represent the best knowledge of the behaviour of the conductor under load.
6.4.8 Tensile breaking strength
6.4.8.1 The sample length, between end terminations, shall be at least 400 times the
conductor diameter but not less than 10 m. A shorter length may be agreed between the
manufacturer and purchaser.
6.4.8.2 The breaking strength of the conductor shall be determined by pulling a conductor in a
suitable tensile testing machine having an accuracy of at least ± 1 %. The rate of increase of
load shall be as in C.6.8 of annex C.
6.4.8.3 At the request of the purchaser, an intermediate load may be held for a period during
the test in order to allow tension fittings to be tested at the same time as the conductor.
6.4.8.4 The breaking strength of the conductor shall be determined by the load attained at
which one or more wires of the conductor are fractured. The test shall be considered
satisfactory if 95 % of the rated tensile strength is reached without the fracture of any wires. If
fracture occurs within 5 cm of the end terminations before 95 % of the rated tensile strength
has been reached, the fracture shall be deemed to have been caused by the end termination
and the test shall be repeated. In this case, a change in the end terminations shall be
considered. If a single wire fractures more than 5 cm from the end terminations before 95 % of
the rated tensile strength has been reached, two re-tests shall be carried out on samples taken
adjacent to the original sample. Both re-tested samples shall withstand 95 % of the rated
tensile strength without the fracture of any wire.
6.4.9 Stringing test
Where the purchaser requires evidence that the conductor is capable of being installed using
the purchaser's recommended installation method, this may be satisfied by a stringing test, an
example of which is given in annex E. Alternative tests or evidence of satisfactory service
experience may also be agreed.

6.5 Properties of wires after stranding
6.5.1 The specimen of wire shall be taken from the conductor sample and shall be removed
from its position and straightened, care being taken not to stretch it in so doing.
6.5.2 The properties of the individual wires after stranding, including tests on the coating of
steel wires, shall meet the requirements of the wire as specified in the standard referenced in
clause 2 with the exceptions:
(a) permitted reductions in wire properties after stranding, given in Table 6, shall apply
together with the following:
The reduction in tensile strength after stranding for ST6C wire, given in Table 6, shall
apply to the mean value of a lot, which shall be interpreted as being the mean value of
all the wires of a given material in the conductor.
(b) for wires where the mean of a lot is specified (AL4 and ST6C), 5 % of individual wire
values may be below the minimum value for an individual wire for tensile strength
before stranding, and above the maximum value for an individual wire for electrical
resistivity
Table 6 - Permitted reductions in wire properties after stranding
Material Reduction after stranding
Aluminium (AL1) Tensile strength 5 %
Zinc coated steel (ST1A to ST6C) and Stress at 1 % extension (1) : 5 %
Aluminium-clad steel (20SA to 40SA) Tensile strength : 5 %
Torsion : subtract 2 turns
Elongation (2) : subtract 0,5
Thickness of AL. cladding (SA wire) : 25 % of minimum
Aluminium alloy (AL2 to AL7) None
(1) Measurements of stress at 1 % extension on steel wires other than the centre wire are unreliable. If
these measurements are required to be made on wires other than the centre wire, then the minimum
value may be agreed between the purchaser and the manufacturer.
(2) Example: A minimum elongation value of 3,0 % for wire before stranding is reduced to 2,5 % for wire
after stranding.
6.5.3 Welding of aluminium wires
The manufacturer shall, if required by the purchaser, demonstrate that the method used for
jointing aluminium wires meets the strength requirement of 5.6.5 by performing the tensile test
in the relevant wire standard given in clause 2.
6.6 Properties of grease
6.6.1 Mass per unit length
Using apparatus capable of achieving an accuracy of ± 0,1 %, the mass of grease in a 1 m
sample of conductor shall be determined from the difference between the mass of the
conductor with grease and its mass after removing the grease with the aid of a suitable
solvent. The mass of grease shall comply with the requirement of 5.8.3.
6.6.2 Drop point
A sample of grease removed from the conductor shall meet the drop point requirement of
EN 50326, without preconditioning, after allowing for a reduction of 5 °C due to the sampling
process.
- 15 - EN 50182:2001
6.7 Inspection
6.7.1 All tests and inspection shall be made at the manufacturer's plant prior to shipment
unless otherwise agreed between the manufacturer and the purchaser at the time of placing
the order and shall be so conducted as not to interfere unnecessarily with the manufacturer's
operations. The manufacturer shall afford the inspector, representing the purchaser, sufficient
testing facilities in order to satisfy him that the material is being furnished in accordance with
this standard.
6.7.2 When inspection is to be made by the purchaser before shipment, the tests shall all be
made within 14 days after receipt of a notice by the purchaser that the material is ready to
test, and the material shall be accepted or rejected at the manufacturer's plant. If the
purchaser does not have a representative present at the manufacturer's plant to test the
material at the expiry of the said 14 days, the manufacturer shall make the tests herein
provided for and furnish to the purchaser, when requested, official copies of the results of such
tests, and the purchaser shall accept or reject the material in accordance with the results of
such tests. Alternatively, the manufacturer may provide relevant test results if these have
already been carried out during production.
6.8 Acceptance or rejection
6.8.1 Failure of a test specimen to comply with any one of the requirements of this standard
shall constitute grounds for rejection of the lot represented by the specimen.
6.8.2 If any lot is so rejected, the manufacturer shall have the right to test, only once, all
individual drums of conductor in the lot and submit those which meet the requirements for
acceptance. Only those tests which do not meet the requirements for acceptance on the
original specimen, shall be carried out.
7 Packaging and marking
7.1 Packaging
The conductor shall be suitably protected against damage or deterioration which could occur in
ordinary handling and shipping.
The following shall be agreed upon between the manufacturer and the purchaser at the time of
placing the order or at the earliest possible time:
(a) the type and size of package and method of packing;
(b) the packaging size and drum bore requirements and also the availability of the inner
end of the conductor for grounding purposes, where the conductor stringing practices
require special consideration.
7.2 Marking and tare
The gross, net and tare weight, length (or length and number of conductors, if more than one
length is agreed upon to be supplied on the same drum), designation, and any other necessary
identification shall be suitably marked inside the package. This same information, together
with the purchase order number, the manufacturer's serial number (if any) and all shipping
marks and other information shall appear on the outside of each package.
7.3 Random lengths
Unless otherwise agreed between the purchaser and manufacturer, random lengths of
conductors unavoidably obtained during production should not exceed 5 % of the purchased
quantity providing that no piece is less than 50 % of the contractual length.

7.4 Accuracy of lengths
The manufacturer shall use equipment to measure the length to an accuracy of ± 1 %.
7.5 Drum barrel dimensions
The diameter of the drum barrel shall be sufficiently large not to cause problems during
subsequent use of the conductor. The experience of some countries is that this value should
be at least thirty times the conductor diameter or sixty times the steel core diameter,
whichever is the greater.
8 Information to be clarified by the purchaser and manufacturer
When making an enquiry or placing an order the following information shall be clarified
between the purchaser and manufacturer:
a) quantity of conductor;
b) conductor designation and number of wires of each type;
c) length of conductor per drum, its tolerance, and where applicable, matching of
conductor lengths;
d) direction of lay. If this information is omitted, the direction of the external lay shall be
right-hand;
e) requirements for grease (designation according to EN 50326 and nominal mass
according to annex B), if any;
f) type and size of package and method of packing;
g) special packaging requirements, if any;
h) lagging requirements, if any;
i) whether tests on wires after stranding are required;
j) nominal conductor diameter and method of measurement;
k) whether conductor breaking strength tests are required;
l) whether conductor stress-strain tests are required;
m) recommended or specified installation methods, or purchaser requirements for tests
designed to demonstrate capability for satisfactory installation;
n) if inspection is required and place of inspection;
o) special requirements, for example any special national conditions (see annex A) which
may apply.
NOTE   This list is given for guidance only, and may not be complete.

- 17 - EN 50182:2001
Annex A
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a long
period, e.g. climatic conditions, electrical earthing conditions. If it affects harmonization, it forms part of
the European Standard or Harmonization Document.
For the countries in which the relevant special national apply these provisions are normative, for other
countries they are informative.
Clause Special national condition
1 Norway, Sweden
Conductors outside the scope of this European Standard may be used. These
conductors are specified in Svensk Standards SS 4240811, SS 4240812,
SS 4240813 and SS 4240814.
5.5.7 Norway, Sweden
This requirement shall not apply.
5.6.2 and France
5.6.4
Joints are not permitted in the outer layer of conductors of type AL4.
5.6.4 France
Joints made by cold pressure welding should be annealed.
The tensile strength of a joint in aluminium of type AL4 shall be not less than
130 N/mm² and not more than 205 N/mm².

Annex B
(normative)
Calculation of nominal mass of grease for stranded conductors
B.1 When it is required for bare conductors to be greased in order to reduce the risk of
corrosion in some environments, the mass of grease shall be calculated using the methods
given in this annex.
B.2 Four cases of grease application are:
Case 1: Steel core only greased (Figure B.1(a)).
Case 2: All the conductor is greased except the outer layer (Figure B.1(b)).
Case 3: All the conductor is greased including the outer layer (Figure B.1(c)).
Case 4: All the conductor is greased except the outer surface of the wires in the
outer layer (Figure B.1(d)).
Other cases may be specified by the purchaser.
Figure B.1 - Application of grease to bare conductors

- 19 - EN 50182:2001
B.3 Assuming the grease completely fills the voids between the wires, the volume of grease
in any given conductor shall be calculated from the following equations:
2 2
Case 1: V = 0,25  (D - n d )
g s s s
2 2 2
Case 2: V = 0,25  { (D - 2d ) - (n - n ) d - n d }
g o a a o a s s
2 2 2
Case 3: V = 0,25  (D - n d - n d )
g o a a s s
2 2 2
Case 4: V = 0,125 n (D - d ) sin(360/n ) - 0,125  (2n - n - 2)d - 0,25  n d
g o o a o a o a s s
where:
V is the volume of grease, per unit length, in the conductor.
g
D is the external diameter of the conductor.
o
D is the diameter of the steel core.
s
d is the diameter of the aluminium wire in the outer layer.
a
d is the diameter of the steel wire.
s
n is the number of aluminium wires in the conductor.
a
n is the number of wires in the outer layer.
o
n is the number of steel wires in the conductor.
s
Since there is a geometric relationship between the parameters of these equations, it is
possible to express the total mass of grease in a conductor with the following relation:
M = k d
g a
where:
M is the mass of grease (kg/km).
g
k   is a factor which depends on the conductor stranding and the grease density and the
fill factor (ratio of theoretical volume).
Values of k are given in Table B.1 for the four cases of grease application, a grease density of
³
0,87g/cm , and a fill factor of 0,8.

Table B.1 - Coefficients k for mass of grease
Stranding k k k k
1 2 3 4
Aluminium Steel Case 1 Case 2 Case 3 Case 4
7 - - - 1,09 0,17
19 - - 1,09 3,28 1,79
37 - - 3,28 6,56 4,52
61 - - 6,56 10,93 8,35
91 - - 10,93 16,40 13,27
127 - - 16,40 22,96 19,28
6 1 - - 1,09 0,17
8 1 - - 1,46 0,34
18 1 - 1,09 3,28 1,79
9 3 0,90 - 2,88 1,46
6 7 0,12 - 1,21 0,29
- 2,48 1,18
10 7 0,66
12 7 1,09 - 3,28 1,79
14 7 1,63 - 4,18 2,51
18 7 0,12 1,21 3,40 1,91
22 7 0,34 1,80 4,35 2,67
24 7 0,49 2,13 4,86 3,10
26 7 0,66 2,48 5,40 3,54
28 7 0,86 2,87 5,97 4,02
30 7 1,09 3,28 6,56 4,52
32 7 1,35 3,72 7,18 5,05
36 7 1,94 4,68 8,50 6,19
42 7 0,34 4,35 7,99 5,77
45 7 0,49 4,86 8,69 6,37
48 7 0,66 5,40 9,41 7,01
54 7 1,09 6,56 10,93 8,35
72 7 0,49 8,69 13,61 10,75
84 7 1,09 10,93 16,40 13,27
14 19 1,76 - 4,31 2,64
15 19 2,10 - 4,83 3,07
16 19 2,46 - 5,38 3,52
18 19 3,28 - 6,56 4,52
30 19 1,18 3,37 6,65 4,61
32 19 1,46 3,83 7,29 5,16
36 19 2,10 4,83 8,66 6,35
6,56 10,93 8,35
42 19 3,28
54 19 1,18 6,65 11,02 8,44
38+22 19 1,42 5,42 9,43 7,03
42+20 19 1,30 4,33 7,98 5,76
66 19 2,46 9,39 14,49 11,54
78 19 4,21 12,59 18,43 15,11
96 19 2,10 13,58 19,59 16,19
100 19 2,46 14,49 20,68 17,19
18 37 3,35 - 6,63 4,59
24 37 6,56 - 10,93 8,35
72 37 3,35 11,00 16,47 13,33
54+66 37 4,39 16,44 23,00 19,33
150 37 3,35 23,03 30,68 26,45
- 21 - EN 50182:2001
Annex C
(normative)
Stress - strain test method
(test to be performed if required by the purchaser)
C.1 Sample length
The sample length, between end terminations, shall be at least 400 times the conductor
diameter but not less than 10 m. A shorter length may be agreed between the manufacturer
and purchaser. The gauge length shall be a minimum of 100 times the conductor diameter.
C.2 Test temperature
Temperature readings shall be taken at the beginning and end of each hold period. If the
temperature varies by more than 2 °C from that at the commencement of the test then
allowance for the thermal expansion of the conductor shall be made.
C.3 Sample preparation
Great care shall be taken in the preparation of test samples. Relative displacements as small
as 1 mm between the steel core and the aluminium layers of the conductor cause significant
changes in the measured stress-strain curves. The sample preparation shall be as follows:
C.3.1 Before removing the sample from the drum, fit a bolted clamp 5 m ± 1 m from the end
of the conductor length. The clamp shall apply sufficient pressure to prevent relative wire
movements in the conductor.
C.3.2 Unwind the desired length of conductor from the drum and install another bolted clamp
at the required distance from the first clamp. Apply adhesive tape and cut the conductor at a
distance from the clamp just far enough to allow room for applying dead-end fittings.
C.3.3 During transportation to the test laboratory, the sample shall be properly protected from
damage. The diameter of the coil or drum of conductor shall be at least 50 times the conductor
diameter.
C.3.4 End fittings such as compression, epoxy type or solder type approved by the purchaser
shall be used for stress-strain tests. The wires shall not be unwound, cleaned or greased prior
to application of the end fittings.
C.3.5 Care shall be taken not to damage any wire during the end preparation of the sample.
C.3.6 The application of the end fitting shall not induce any slack in the wires which might
alter the stress-strain curves of the conductor.
C.4 Requirements for compression fittings
When compression fittings are used for ALx/STyz conductors, the method indicated in C.4.1 to
C.4.3 shall be followed.
C.4.1 Slide the aluminium sleeve on to the conductor. Cut back the aluminium wires to allow
room for the steel terminal, the extrusion of the steel terminal and the extrusion of the
aluminium wires by the aluminium compression sleeve. The space required between the
aluminium wires and the steel terminal, before crimping, is typically 30 mm to 40 mm. Slide
the compression steel dead-end terminal on to the steel core. Crimp the steel terminal, with a
2 % to 10 % maximum overlap, starting from the outer core end.

C.4.2 Pull the aluminium sleeve on to the steel terminal. Leave 40 mm of space if the
conductor diameter is less than or equal to 30 mm and 50 mm of space if the conductor
diameter is greater than 30 mm, between the end of the aluminium sleeve and the shoulder of
the steel terminal for extrusion. Make the first crimp on the tapered mouth of the aluminium
sleeve.
This locks the sleeve in place and inhibits extrusion of aluminium towards the test span.
Proceed to crimp in the direction away from the span in small bites of 20 % on uncompressed
metal.
Stop crimping before the filler hole in the sleeve is reached; the steel terminal and core are
too small to support the crimped aluminium sleeve in this region. Continue towards the eye, on
the other side of the terminal pad to lock the sleeve on to the expanded portion of the steel
terminal.
C.4.3 The aluminium sleeve shall be oriented so that there is no interference with conductor
movement during the test.
C.5 Test set-up
C.5.1 The test sample shall be supported in a trough over its full length, and the trough
adjusted so that the conductor will not lift by more than 10 mm when under tension. This shall
be ascertained by measurement rather than by tensioning the conductor.
C.5.2 The conductor strain shall be evaluated from the measured displacements at the two
ends of the gauge length of the conductor. The gauge reference targets shall be attached to
the bolted clamps which lock the conductor wires together. Target plates may be used with dial
gauges or displacement transducers and care shall be taken to position the plates
perpendicular to the conductor.
NOTE   Twisting the conductor, lifting it and moving it from side to side by the maximum amounts expected during the
test should introduce no more t
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