EN 50341-2-1:2022

Overhead electrical lines exceeding AC 1 kV - Part 2-1: National Normative Aspects (NNAs) for Austria (based on EN 50341-1:2012)

1.1 General (A-dev) AT.1: A new overhead line is defined as the new construction of the totality of all conductors, their supports together with foundations, earthing grid, insulators, accessories and fittings used for the overground transport of electrical energy between two points A and B. 1.2 Field of application (A-dev) AT.1: Stranded-conductors or cable structures with telecommunications components carried on the line that do not simultaneously function as earth wires or stranded conductors are subject to the provisions of Annex U.

Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-1. del: Nacionalna normativna določila (NNA) za Austrijo (na podlagi EN 50341-1:2012)

(A-dev)   AT.1:   Nov nadzemni vod je opredeljen kot nova konstrukcija, ki vključuje vse vodnike in njihove nosilce skupaj s temelji, ozemljitveno mrežo, izolatorji, priborom in fitingi, ki se uporabljajo za nadzemni prenos električne energije med točkama A in B.
1.2   Področje uporabe
(A-dev)   AT.1:   Za pramenaste vodnike ali kabelske konstrukcije s telekomunikacijskimi komponentami na vodu, ki ne delujejo hkrati kot ozemljitvene žice ali pramenasti vodniki, veljajo določila dodatka U.

General Information

• Status: Published
• Publication Date: 27-Oct-2022
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: CLC/TC 11 - Overhead electrical lines exceeding 1 kV a.c. (1,5 kV d.c.)
• Drafting Committee: CLC/TC 11 - Overhead electrical lines exceeding 1 kV a.c. (1,5 kV d.c.)
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 28-Oct-2022
• Due Date: 06-Nov-2024
• Completion Date: 28-Oct-2022
• Ref Project: SIST EN 50341-2-1:2023 - Overhead electrical lines exceeding AC 1 kV - Part 2-1: National Normative Aspects (NNAs) for Austria (based on EN 50341-1:2012)

Relations

• Replaces: EN 50341-2-1:2020 - Overhead electrical lines exceeding AC 1 kV - Part 2-1: National Normative Aspects (NNAs) for Austria (based on EN 50341-1:2012)
• Effective Date: 01-Nov-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2023
Nadomešča:
SIST EN 50341-2-1:2021
Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-1. del: Nacionalna
normativna določila (NNA) za Austrijo (na podlagi EN 50341-1:2012)
Overhead electrical lines exceeding AC 1 kV - Part 2-1: National Normative Aspects
(NNAs) for Austria (based on EN 50341-1:2012)
Ta slovenski standard je istoveten z: EN 50341-2-1:2022
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 50341-2-1

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2022
ICS 29.240.20 Supersedes EN 50341-2-1:2020
English Version
Overhead electrical lines exceeding AC 1 kV - Part 2-1: National
Normative Aspects (NNAs) for Austria (based on
EN 50341-1:2012)
This European Standard was approved by CENELEC on 2022-06-22. 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 CEN-CENELEC
Management Centre 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 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,
Türkiye 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 50341-2-1:2022 E
Contents Page
Foreword . 6
1 Scope . 7
2 Normative references, definitions and symbols . 7
2.1 Normative references . 7
2.2 Definitions . 8
2.3 Symbols . 10
3 Basis of design . 11
3.2 Requirements of overhead lines . 11
3.2.2 Reliability requirements . 11
4 Actions on lines . 11
4.3 Wind loads . 11
4.3.1 Field of application and basic wind velocity . 11
4.3.2 Mean wind velocity . 11
4.3.3 Mean wind pressure . 12
4.3.4 Turbulence intensity and peak wind pressure. 12
4.4 Wind forces on overhead line components . 12
4.4.1 Wind forces on conductors. 12
4.4.2 Wind forces on insulator sets . 12
4.4.3 Wind forces on lattice towers . 13
4.4.4 Wind forces on poles . 13
4.5 Ice loads . 13
4.5.1 General . 13
4.5.2 Ice forces on conductors . 13
4.6 Combined wind and ice loads . 14
4.6.2 Drag factors and ice densities . 14
4.6.3 Mean wind pressure and peak wind pressure . 14
4.6.6 Combination of wind velocities and ice loads . 14
4.7 Temperature effects . 14
4.11 Other special forces . 14
4.11.3 Forces as a result of enhanced use . 14
4.12 Load cases . 15
4.12.2 Standard load cases . 15
4.13 Partial factors for actions . 24
5 Electrical requirements . 24
5.2 Currents . 24
5.2.1 Normal current . 24
5.4 Classification of voltages and overvoltages . 25
5.4.2 Representative power frequency voltages . 25
5.5 Minimum air clearance distances to avoid flashover . 25
5.5.1 General . 25
5.5.3 Empirical method based on European experience . 25
5.6 Load cases for the calculation of clearances . 25

Austria – 3/97 – EN 50341-2-1:2022
5.6.1 Load conditions . 25
5.6.2 Maximum conductor temperature . 25
5.6.3 Wind loads for determination of electric clearances . 26
5.6.4 Ice loads for determination of electric clearances . 26
5.6.5 Combined wind and ice loads . 26
5.8 Internal clearances within the span and at the top of support . 27
5.9 External clearances . 28
5.9.1 General . 28
5.9.2 External clearances to ground in areas remote from buildings, roads, etc. . 32
5.9.3 External clearances to residential and other buildings . 35
5.9.4 External clearances to crossing traffic routes . 50
5.9.6 External clearances to other power lines or overhead telecommunication lines . 62
5.9.7 External clearances to recreational areas (playgrounds, sports areas, etc.) . 69
5.11 Electric and magnetic fields . 71
5.11.1 Electric and magnetic fields under a line . 71
6 Earthing systems . 71
6.4 Dimensioning with regard to human safety . 71
6.4.1 Permissible values for touch voltages . 71
6.4.2 Touch voltage limits at different locations . 71
6.4.3 Basic design of earthing systems with regard to permissible touch voltag . 72
7 Supports . 72
7.1 Initial design considerations . 72
7.1.1 Introduction . 72
7.3 Lattice steel towers . 72
7.4 Steel poles . 73
7.4.7 Serviceability limit states (EN 1993-1-1:2005 – chapter 7). 73
7.4.8 Resistance of connections . 73
7.5 Wood poles . 73
7.5.3 Materials . 73
7.5.4 Durability . 73
7.5.5 Ultimate limit states . 73
7.5.6 Serviceability limit states . 74
7.5.7 Resistance of connections . 74
7.6 Concrete poles . 75
7.6.4 Ultimate limit states . 75
7.6.5 Serviceability limit states . 75
7.6.6 Design assisted by testing . 75
7.7 Guyed structures . 75
7.7.6 Design details for guys . 75
7.8 Other structures .
...