EN 50341-2-4:2016

Overhead electrical lines exceeding AC 1 kV - Part 2-4: National Normative Aspects (NNA) for Germany (based on EN 50341-1:2012)

This EN applies for planning and design of overhead lines with nominal voltages above AC 1 kV. This EN needs not to be adopted for existing installations. Installations in the planning and construction stage may be completed adopting the standard edition valid at the beginning of planning. In Germany this EN is applicable for all types of conductors (according to the information in clause 1.2) which contain components for telecommunication. In Germany this EN is applicable for the installation of telecommunication equipment on supports. Reference is made to 4.11.1/DE.1 "Extension of utilization"

Freileitungen über AC 1 kV - Teil 2-4: Nationale Normative Festlegungen (NNA) für Deutschland (basierend auf EN 50341-1:2012)

Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-4. del: Nacionalna normativna določila (NNA) za Nemčijo (na podlagi EN 50341-1:2012)

Ta standard EN se uporablja za načrtovanje in izgradnjo nadzemnih vodov za nominalne izmenične napetosti nad 1 kV.
Tega standarda EN ni treba sprejeti za obstoječe inštalacije. Inštalacije na stopnji načrtovanja in izgradnje se lahko dokončajo s sprejetjem standardne izdaje, veljavne ob začetku načrtovanja.

General Information

• Status: Withdrawn
• Publication Date: 28-Jan-2016
• Withdrawal Date: 30-Nov-2018
• 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: 9960 - Withdrawal effective - Withdrawal
• Start Date: 24-May-2019
• Completion Date: 24-May-2019
• Ref Project: SIST EN 50341-2-4:2016 - Overhead electrical lines exceeding AC 1 kV - Part 2-4: National Normative Aspects (NNA) for Germany (based on EN 50341-1:2012)

Relations

• Replaced By: EN 50341-2-4:2019 - Overhead electrical lines exceeding AC 1 kV - Part 2-4: National Normative Aspects (NNA) for GERMANY (based on EN 50341-1:2012)
• Effective Date: 28-May-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2016
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QRUPDWLYQDGRORþLOD11$]D1HPþLMRQDSRGODJL(1
Overhead electrical lines exceeding AC 1 kV - Part 2-4: National Normative Aspects
(NNA) for Germany (based on EN 50341-1:2012)
Freileitungen über AC 1 kV - Teil 2-4: Nationale Normative Festlegungen (NNA) für
Deutschland (basierend auf EN 50341-1:2012)
Ta slovenski standard je istoveten z: EN 50341-2-4:2016
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 50341-2-4

NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2016
ICS 29.240.20
English Version
Overhead electrical lines exceeding AC 1 kV - Part 2-4: National
Normative Aspects (NNA) for Germany (based on EN 50341-
1:2012)
This European Standard was approved by CENELEC on 2015-12-01. 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 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50341-2-4:2016 E
Contents
Page
European foreword . 8
1 Scope . 9
1.1 General . 9
1.2 Field of application . 9
2 Normative references, definitions and symbols . 9
2.1 Normative references . 9
2.2 Definitions . 14
2.3 Symbols . 19
3 Basis of design . 23
3.2 Requirements of overhead lines . 23
3.2.1 Basic requirements . 23
3.2.2 Reliability requirements . 23
3.2.5 Strength coordination . 23
3.2.6 Additional considerations . 23
3.4 Actions . 23
3.4.3 Classification of actions by their nature and/or the structural response . 23
3.6 Design values . 24
3.6.3 Design value of a material property . 24
3.6.4 Combination value of a variable action . 24
4 Actions on lines . 24
4.1 Introduction . 24
4.3 Wind loads . 24
4.4 Wind forces on overhead line components . 27
4.4.1 Wind forces on conductors . 27
4.4.2 Wind forces on insulator sets . 29
4.4.3 Wind forces on lattice towers . 30
4.4.4 Wind forces on poles . 32
4.5 Ice loads . 32
4.5.2 Ice forces on conductors . 32
4.6 Combined wind and ice loads . 34
4.6.4 Equivalent diameter D of ice-covered conductor . 34
4.6.6 Combination of wind velocities and ice loads . 34
4.8 Security loads . 34
4.8.1 General. 34
4.9 Safety loads . 34
4.9.1 Construction and maintenance loads . 34

Germany – 3/90 – EN 50341-2-4:2016

Page
4.9.2 Loads related to the weight of lines men. 35
4.10 Forces due to short-circuit currents . 35
4.11 Other special forces . 35
4.12 Load cases . 35
4.12.1 General . 35
4.12.2 Standard load cases. 36
4.13 Partial factors for actions . 39
5 Electrical requirements . 40
5.2 Currents . 40
5.2.1 Normal current . 40
5.4 Classification of voltages and overvoltages . 40
5.4.2 Representative power frequency voltages . 40
5.5 Minimum air clearance distances to avoid flashover. 40
5.5.3 Empirical method based on European experience . 40
5.6 Load cases for calculation of clearances . 40
5.6.3 Wind loads for determination of electric clearances . 40
5.6.4 Ice loads for the determination of electric clearances . 41
5.6.5 Combined wind and ice loads . 41
5.8 Internal clearances within the span and at the top of support . 41
5.9 External clearances . 42
5.9.1 General . 42
5.9.2 External clearances to ground in areas remote from buildings, roads etc. . 45
5.9.3 External clearances to residential and other buildings . 45
5.9.4 External clearances to crossing traffic routes . 47
5.9.5 External clearances to adjacent traffic routes . 47
5.9.6 External clearances to other power lines or overhead telecommunication lines . 48
5.11 Electric and magnetic fields . 48
5.11.1 Electric and magnetic fields under a line. 48
5.11.2 Electric and magnetic field Induction . 48
5.11.3 Interference with telecommunication circuits . 49
6 Earthing systems . 49
6.1 Introduction . 49
6.1.2 Requirements for dimensioning of earthing systems . 49
6.1.3 Earthing measures against lightning effects . 51
6.3 Dimensioning with regard to thermal strength . 51
6.3.2 Current rating calculation . 51
6.4 Dimensioning with regard to human safety . 52
6.4.2 Touch voltage limits at different locations . 52

Page
6.4.3 Basic design of earthing systems with regard to permissible touch voltage . 52
6.4.4 Measures in systems with isolated neutral or resonant earthing . 53
6.5 Site inspection and documentation of earthing systems . 53
7 Supports . 53
7.1 Initial design considerations . 53
7.2 Materials . 54
7.2.1 Steel materials, bolts, nuts and wa
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