EN 50540:2010
(Main)Conductors for overhead lines - Aluminium Conductors Steel Supported (ACSS)
Conductors for overhead lines - Aluminium Conductors Steel Supported (ACSS)
This draft European Standard specifies the electrical and mechanical characteristics of ACSS conductors made of round or formed annealed aluminium wires and steel wires stranded in alternate directions, made of one or a combination of any of the following. 1.1 Outer/conductive layers Annealed Aluminium wire as per requirements of Clause 5. 1.2 Steel core a) Galvanized steel wire type ST6A according to EN 50189 and requirements of Clause 5; b) Zn95Al5 alloy coated steel wire with MM (mischmetal) as per EN 10244-2 and mechanical and mass of coating requirements as per Tables 2 and 3, in the following options: i Extra High Strength; ii Ultra High Strength. NOTE MM elements are mandatory. Coatings without MM can be used, if agreed between Supplier and Purchaser. Tests without MM must show the same behaviour than the MM coatings. c) Aluminium-clad steel wire 20,3 % conductivity in the following options: - as per EN 61232 with class designation 20 SA; - aluminium-clad steel wire Extra High Strength with designation 20 EHSA as per Table 4. d) Aluminium-clad steel wire 14 % conductivity, Extra High Strength with designation 14 EHSA as per Table 5.
Leiter für Freileitungen - Aluminiumleiter, von beschichtetem Stahl getragen (Ausführung ACSS)
Diese Europäische Norm beschreibt die elektrischen und mechanischen Eigenschaften vom ACSS Leitern aus in wechselnden Richtungen verseilten runden oder trapezförmigen Drähten aus weich-geglühten Aluminiumdrähten und Stahldrähten, hergestellt aus einem oder einer Kombination von irgendeinem der folgenden Werkstoffe. 1.1 Äußere/leitende Lagen Weich-geglühter Aluminiumdraht nach Abschnitt 5. 1.2 Stahlkern a) Verzinkter Stahldraht, Festigkeitsklasse ST6A nach EN 50189 und den Anforderungen nach Abschnitt 5; b) Mit Zn95Al5-Legierung beschichteter Stahldraht mit MM (Mischmetall) nach EN 10244-2 und den mechanischen Anforderungen und den Anforderungen an die Masse entsprechend den Tabellen 2 und 3, in den folgenden Ausführungen: i extra hohe Festigkeit; ii extrem hohe Festigkeit; ANMERKUNG MM-Bestandteile sind zwingend erforderlich, Beschichtungen ohne MM können verwendet werden, wenn zwischen Lieferant und Käufer vereinbart. Prüfergebnisse ohne MM müssen das gleiche Verhalten zeigen wie die der MM-Beschichtungen. c) Aluminium-beschichteter Stahldraht 20,3 % Leitfähigkeit in den folgenden Ausführungen: – nach EN 61232 entsprechend Klasse 20SA; – Aluminium-beschichteter Stahldraht, extra hohe Festigkeit mit der Bezeichnung 20EHSA wie nach Tabelle 4; d) Aluminium-beschichteter Stahldraht 14 % Leitfähigkeit, extra hohe Festigkeit mit der Bezeichnung 14EHSA wie nach Tabelle 5.
Conducteurs pour lignes aériennes - Conducteurs à faible dilatation (ACSS)
Le présent projet de Norme Européenne spécifie les caractéristiques électriques et mécaniques des conducteurs ACSS constitués de fils d'aluminium recuit, ronds ou de forme et de fils d'acier câblés en sens alterné; ces conducteurs sont réalisés suivant une ou toute combinaison ci-après. 1.1 Couches externes/conductrices Fil d'aluminium recuit, selon des exigences de l'Article 5. 1.2 Âme acier a) Fil d'acier galvanisé de type ST6A, conformément à la EN 50189 et aux exigences de l'Article 5; b) Fil d'acier à revêtement d'alliage Zn95Al5 avec mischmetal (MM) selon la EN 10244-2, et avec les exigences mécaniques et de masse de revêtement des Tableaux 2 et 3 de la présente norme, en considérant les options suivantes: i Très haute résistance; ii Ultra haute résistance. NOTE Les éléments MM sont obligatoires. Des revêtements sans MM peuvent être utilisés, si cela est convenu entre le fournisseur et l'acheteur. Les essais des revêtements sans MM doivent démontrer le même comportement que celui des revêtements avec MM. c) Fil d'acier revêtu d'aluminium, de niveau de conductivité 20,3 %, avec les options suivantes: – selon la EN 61232, de classe désignée 20 SA; – fil d'acier revêtu d'aluminium, à très haute résistance, de classe désignée 20 EHSA selon le Tableau 4 de la présente norme. d) fil d'acier revêtu d'aluminium, de niveau de conductivité 14 %, à très haute résistance, de classe désignée 14 EHSA selon le Tableau 5 de la présente norme.
Aluminijevi vodniki z jekleno podporo (ACSS) za nadzemne vode
Ta evropski standard določa električne in mehanske značilnosti vodnikov ACSS, izdelanih iz okroglih ali oblikovanih žarjenih aluminijastih žic in jeklenih žic, sukanih v različnih smereh, izdelanih iz ene ali kombinacije katere koli od teh.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2011
Aluminijevi vodniki z jekleno podporo (ACSS) za nadzemne vode
Aluminium Conductors Steel Supported (ACSS) for overhead lines
Leiter für Freileitungen - Aluminiumleiter, von beschichtetem Stahl getragen (Ausführung
ACSS)
Conducteurs pour lignes aériennes - Conducteurs à faible dilatation (ACSS)
Ta slovenski standard je istoveten z: EN 50540:2010
ICS:
29.060.20 Kabli Cables
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 50540
NORME EUROPÉENNE
April 2010
EUROPÄISCHE NORM
ICS 29.240.20
English version
Conductors for overhead lines -
Aluminium Conductors Steel Supported (ACSS)
Conducteurs pour lignes aériennes - Leiter für Freileitungen -
Conducteurs à faible dilatation (ACSS) Aluminiumleiter, von beschichtetem Stahl
getragen (Ausführung ACSS)
This European Standard was approved by CENELEC on 2010-04-01. 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, 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
Management Centre: 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. EN 50540:2010 E
Foreword
This European Standard was prepared by CENELEC BTTF 132-1, Aluminium conductors steel supported
(ACSS type) for overhead electrical lines, based on the text of BT/ES0023/NOT. It was submitted to the
CENELEC Unique Acceptance Procedure and was approved by CENELEC as EN 50540 on 2010-04-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights.
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) 2011-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow) 2013-04-01
__________
- 3 - EN 50540:2010
Contents
1 Scope . 5
1.1 Outer/conductive layers . 5
1.2 Steel core . 5
2 Normative re f e r enc es . 5
3 Definitions . 6
4 Designation system . 7
5 Requirements for ACSS stranded conductors . 8
5.1 Material . 8
5.2 Str anding . 11
5.3 Surface condition . 12
5.4 Conductor diameter . 12
5.5 Mechanical characteristics . 12
5.6 Joints . 13
5.7 Conductor mass per unit length . 13
5.8 Nominal DC resistance . 15
5.9 Variation in Aluminium area . 16
6 Tests . 16
6.1 Classification of tests . 16
6.2 Sample size . 17
6.3 Rounding rules . 17
6.4 Properties of c onduc tor . 17
6.5 Properties of wires . 19
6.6 Ins pec tion . 19
6.7 Acceptance or rejection . 20
7 Packaging and marking . 20
7.1 Packaging . 20
7.2 Marking and tare. 20
7.3 Random lengths . 20
7.4 Accuracy of lengths . 20
7.5 Drum barrel dim ensions . 21
8 Information to be clarified by the purchaser and manufacturer . 21
Annex A (normative) Stress - strain test method . 22
Annex B (informative) Lay ratios used for calculation of increments due to stranding
in Tables 5 and 6 . 25
Annex C (normative) Test for ability of a conductor to be erected using tension stringing . 26
Annex D (informative) AC resistance measurement method . 28
Figures
Figure C.1 - Test arrangement . 27
Figure C.2 – Drum holder and tensioner set–up . 27
Tables
Table 1 - Mechanical characteristics steel ST6A wires before stranding . 8
Table 2 - Characteristics of Extra High Strength Zn95Al5 steel wires (before stranding) . 9
Table 3 - Characteristics of Ultra High Strength Zn95Al5 steel wires (before stranding) . 9
Table 4 - Characteristics of Extra High Strength aluminium clad steel wires 20EHSA
(before stranding) . 10
Table 5 - Characterístics of Extra High Strength aluminium clad steel wires 14EHSA
(before stranding) . 10
Table 6 - Physical constants . 11
Table 7 - Lay ratios for galvanized steel, Zn95Al5 coated steel or aluminium-clad steel
layers . 12
Table 8 - Lay ratios for aluminium layers . 12
Table 9 - Number of joints permitted in a given length . 13
Table 10 - Increments due to stranding for formed Al wires . 14
Table 11 - Increments due to stranding for round Al wires . 15
Table 12 - Type and sample tests for conductors and wires . 16
Table 13 - Permitted reductions in wire properties after stranding . 19
Table B.1 - Lay ratios used for calculation of increments due to stranding in Tables 10 & 11 . 25
- 5 - EN 50540:2010
1 Scope
This European Standard specifies the electrical and mechanical characteristics of ACSS conductors made
of round or formed annealed aluminium wires and steel wires stranded in alternate directions, made of
one or a combination of any of the following.
1.1 Outer/conductive layers
Annealed Aluminium wire as per requirements of Clause 5.
1.2 Steel core
a) Galvanized steel wire type ST6A according to EN 50189 and requirements of Clause 5;
b) Zn95Al5 alloy coated steel wire with MM (mischmetal) as per EN 10244-2 and mechanical and mass of
coating requirements as per Tables 2 and 3, in the following options:
i Extra High Strength;
ii Ultra High Strength.
NOTE MM elements are mandatory. Coatings without MM can be used, if agreed between Supplier and Purchaser. Tests
without MM must show the same behaviour than the MM coatings.
c) Aluminium-clad steel wire 20,3 % conductivity in the following options:
- as per EN 61232 with class designation 20 SA;
- aluminium-clad steel wire Extra High Strength with designation 20 EHSA as per Table 4.
d) Aluminium-clad steel wire 14 % conductivity, Extra High Strength with designation 14 EHSA as per
Table 5.
2 Normative 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 10244-2 Steel wire and wire products. Non-ferrous metallic coating on steel wire
Part 2: zinc or zinc alloy coatings
EN 50182 Conductors for overhead lines - Round wire concentric lay stranded conductors
EN 50189 Conductors for overhead lines - Zinc coated steel wires (for testing purposes only)
EN 60889 Hard-drawn aluminum wire for overhead line conductors (for testing purposes only)
(IEC 60889)
EN 61232 Aluminium-clad steel wires for electrical purposes (IEC 61232)
EN 62219 Overhead electrical conductors - Formed wire, concentric lay, stranded conductors
(IEC 62219)
IEC 60050-466 International Electrotechnical Vocabulary (IEV) - Chapter 466: Overhead lines
IEC 60468 Method of measurement of resistivity of metallic materials
3 Definitions
In addition to the definitions given in IEC 60050-466, EN 50182 and EN 62219, the following definitions
apply.
3.1
aluminium
the most abundant of all metals. It is a ductile metal, silver-white in colour, which can be readily worked by
rolling, drawing, spinning, extruding, and forging. For the purpose of this European Standard, the
aluminium must be annealed
3.2
conductor
material intended to be used for carrying electric current consisting of a plurality of uninsulated wires
twisted together
3.3
concentric lay stranded conductor
conductor composed of a central core surrounded by one or more adjacent layers of wires being laid
helically in opposite directions
3.4
lay length
axial length of one complete turn of the helix formed by an individual wire in a stranded
conductor
3.5
lay ratio
ratio of the lay length to the external diameter of the corresponding layer of wires in the
stranded conductor
3.6
direction of lay
3.6.1
direction of lay (general definition)
direction of twist of a layer of wires as it moves away from the viewer
NOTE A right-hand lay is a clockwise direction and a left-hand lay is an anti-clockwise direction.
3.6.2
direction of lay (alternative definition)
the direction of lay is defined as right-hand or left-hand
NOTE 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 direction of the central part of the letter S when the conductor is held vertically.
3.7
round wire
filament of drawn metal having a constant circular cross-section
3.8
formed wire
filament of metal having a constant cross-section and a non-circular shape
3.9
equivalent wire diameter
the diameter of a round wire which would have the same cross-sectional area, mass and electrical
resistance as a given formed wire of the same material
- 7 - EN 50540:2010
3.10
lot
group of conductors manufactured by the same manufacturer under similar conditions of
...
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