SIST EN IEC 63248:2023/A11:2023

Conductors for overhead lines - Coated or cladded metallic wire for concentric lay stranded conductors

2019-10-31:This prAA represents common mods. to prEN IEC 63248 (PR=70075)

Leiter für Freileitungen - Beschichtete oder ummantelte Metalldrähte für Leiter aus konzentrisch verseilten Drähten

Conducteurs pour lignes aériennes - Fil métallique revêtu ou recouvert pour conducteurs toronnés à couches concentriques

No scope available

Vodniki za nadzemne vode - Prevlečena ali prekrita kovinska žica za koncentrično pletene vodnike - Dopolnilo A11

General Information

• Status: Published
• Public Enquiry End Date: 18-Jul-2021
• Publication Date: 12-Mar-2023
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: NVV - Overhead lines and overhead electrical conductors
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 19-May-2022
• Due Date: 24-Jul-2022
• Completion Date: 13-Mar-2023
• Ref Project: EN IEC 63248:2022/A11:2022 - Conductors for overhead lines - Coated or cladded metallic wire for concentric lay stranded conductors

Relations

• Amends: SIST EN IEC 63248:2023 - Conductors for overhead lines - Coated or cladded metallic wire for concentric lay stranded conductors (IEC 63248:2022)
• Effective Date: 05-Nov-2019

Overview

This document is the CENELEC amendment EN IEC 63248:2022/A11:2022 to the European standard for conductors for overhead lines - specifically addressing coated or cladded metallic wire for concentric lay stranded conductors. Amendment A11 (approved 2022‑04‑11) introduces new wire designations, updates mechanical and coating requirements, and adds national special conditions (Annex E). It applies to manufacturers, utilities and testing laboratories working with zinc and zinc‑aluminium coated steel wires for power transmission and distribution lines.

Key topics and requirements

• New wire designations: Adds designations ST3D, ST4A, ST5E to the wire tables for Group 1 zinc‑coated steel wires.
• Mechanical properties: Updates tables for nominal diameters, tensile strength, stress at 1% extension, elongation and modulus values used for design and calculation.
• Coating requirements: Specifies minimum mass of coating (g/m) for zinc and zinc‑aluminium coatings across diameters and classes (examples shown in Table A.8).
• Manufacturing processes: Defines minimum number of dips for Zn and Zn‑alloy coatings (Table A.12) and differences in dip times for zinc‑aluminium alloys.
• Testing and acceptance:
  • Initial setting for determining stress at 1% extension (Table A.7).
  • Torsion, wrapping and reverse‑bend test references (ISO 7800, ISO 7801, ISO 7802).
  • Specific mandrel/torsion and reverse bend test parameters added for particular designations.
• Properties for calculation: Adds density, resistivity, coefficient of thermal expansion and modulus values for new designations (Table B.1).
• National special conditions: Annex E includes normative national provisions (example: Norway - allowance for an additional steel grade with defined tensile/stress ranges; reverse‑bend instead of torsion tests for ST5E and ST1A with radius/number‑of‑bends tables).

Applications and users

This amendment is essential for:

• Conductor manufacturers specifying coated/cladded wires for concentric‑lay stranded conductors.
• Transmission and distribution utilities validating material acceptance and performance.
• Design engineers calculating mechanical and electrical conductor performance.
• Testing laboratories and inspection bodies executing the referenced tests and certification.
• Standards committees and procurement teams aligning national practice with CENELEC harmonized requirements.

Practical use cases include conductor specification, procurement contracts, factory acceptance testing, performance calculations for overhead lines, and harmonized cross‑border supply.

Related standards

The amendment references international test and material standards such as ISO 6892‑1, ISO 7800, ISO 7801, ISO 7802, ISO 7989‑2 and IEC 60468, which are used for tensile testing, torsion/reverse‑bend/wrapping tests and resistivity measurements.

Keywords: EN IEC 63248:2022/A11:2022, conductors for overhead lines, coated metallic wire, concentric lay stranded conductors, zinc‑coated, zinc‑aluminium, conductor testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2023
Vodniki za nadzemne vode - Prevlečena ali prekrita kovinska žica za koncentrično
pletene vodnike - Dopolnilo A11
Conductors for overhead lines - Coated or cladded metallic wire for concentric lay
stranded conductors
Leiter für Freileitungen - Beschichtete oder ummantelte Metalldrähte für Leiter aus
konzentrisch verseilten Drähten
Conducteurs pour lignes aériennes - Fil métallique revêtu ou recouvert pour conducteurs
toronnés à couches concentriques
Ta slovenski standard je istoveten z: EN IEC 63248:2022/A11:2022
ICS:
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 IEC 63248:2022/A11

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2022
ICS 29.060.01; 29.240.20
English Version
Conductors for overhead lines - Coated or cladded metallic wire
for concentric lay stranded conductors
Conducteurs pour lignes aériennes - Fil métallique revêtu Leiter für Freileitungen - Beschichtete oder ummantelte
ou recouvert pour conducteurs toronnés à couches Metalldrähte für Leiter aus konzentrisch verseilten Drähten
concentriques
This amendment A11 modifies the European Standard EN IEC 63248:2022; it was approved by CENELEC on 2022-04-11. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment 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 CEN-CENELEC Management Centre 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63248:2022/A11:2022 E

European foreword
This document (EN IEC 63248:2022/A11:2022) has been prepared by CLC/TC 7X “Overhead electrical
conductors”.
The following dates are fixed:
• latest date by which this document has to be implemented (dop) 2023-04-11
at national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with (dow) 2025-04-11
this document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
1 Modifications to Table A.1, “Wire Designation”
Add the designations “ST3D, ST4A, ST5E” to Table A.1 as follows:
e
Add “D, E” to footnote to Table A.1 as follows:
Group Designation Wire designation
e,f S1A Zinc-coated steel S1A
Group 1
Zinc-coated steel wires
ST1A Zinc-coated steel ST1A
ST3D Zinc-coated steel ST3D
ST4A Zinc-coated steel ST4A
S2A Zinc-coated steel S2A
ST5E Zinc-coated steel ST5E
S3A Zinc-coated steel S3A
e
For Group 1, Group 4 and Group 5 the last letter (A, B, C, D, E) refers to the coating class.

2 Modification to Table A.4, “Requirements for zinc and zinc-aluminium alloy
coated steel wires (group 1, group 4 and group 5)”
Add the designations “ST3D, ST4A, ST5E” to Table A.4 in the same sequence as given in Table A.1 (see
Modification 1):
Nominal Diameter Min. Min. Min. lot Min. Ratio of Ratio of Min.
Diameter, mm tolerance, stress at ultimate average elongation mandrel
mandrel number
1 % tensile tensile after diameter diameter of
mm
Over Up to
extension, strength, strength, break, to wire to wire torsions
–- and
a diameter diameter
MPa MPa % –-
including
for for
MPa
–-
ductility coating
wrapping
adherence
test test
–- –-
ST3D
1,24 1,50 ±0,05 1 210 1 500  4,0 2 4 16
1,50 1,75 ±0,07 1 210 1 500  4,0 2 4 16
1,75 2,25 ±0,08 1 210 1 500  4,0 2 4 16
2,25 2,75 ±0,10 1 210 1 500  4,0 3 4 16
2,75 3,00 ±0,12 1 210 1 500  4,0 3 4 16
3,00 3,50 ±0,13 1 100 1 400  4,0 3 4 16
3,50 4,25 ±0,13 1 100 1 400  4,0 3 5 14
4,25 4,75 ±0,13 1 100 1 400  4,0 3 5 14
4,75 5,50 ±0,13 1 100 1 400  4,0 3 5 14
ST4A
1,24 1,50 ±0,03 1 275 1 670  3,5 2 4 12
1,50 1,75 ±0,03 1 275 1 670  3,5 2 4 12
1,75 2,25 ±0,03 1 275 1 670  3,5 2 4 12
2,25 2,75 ±0,04 1 275 1 670  4,0 3 4 12
2,75 3,00 ±0,05 1 275 1 670  4,0 3 4 12
3,00 3,50 ±0,05 1 225 1 620  4,0 3 4 12
3,50 4,25 ±0,06 1 225 1 620  4,0 3 5 12
4,25 4,75 ±0,06 1 225 1 620  4,0 3 5 12
4,75 5,50 ±0,07 1 225 1 620  4,0 3 5 12
ST5E
1,24 1,75 ±0,03 1 420 1 620  3,5 4 4
1,75 2,30 ±0,04 1 420 1 620  3,5 4 4
2,30 2,55 ±0,04 1 370 1 620  4,0 4 4
2,55 2,75 ±0,04 1 370 1 670  4,0 4 4
2,75 3,50 ±0,05 1 370 1 670  4,0 4 4
3,50 4,75 ±0,06 1 370 1 670  4,0 5 5
4,75 5,50 ±0,07 1 370 1 670  4,0 5 5
...