EN 50341-2-8:2017
(Main)Overhead electrical lines exceeding AC 1 kV - Part 2-8: National Normative Aspects (NNA) for France (based on EN 50341-1:2012)
Overhead electrical lines exceeding AC 1 kV - Part 2-8: National Normative Aspects (NNA) for France (based on EN 50341-1:2012)
(ncpt) FR.1 Scope of Part 1 and Part 2-8 Part 1 and the present Part 2-8 apply to new overhead lines as defined in 1.1/FR.2 "Definition of a new overhead line". (ncpt) FR.2 Definition of a new overhead line A new overhead line denotes any new overhead electrical line exceeding AC 1 kV built on new foundations and: - flanked by two substations or two terminal towers preceding said substations. or - flanked by a substation or a terminal tower at one end and in a branch situation (including branch tower) or tapping situation at the other end. (ncpt) FR.3 Application to existing overhead lines This standard does not apply to existing overhead lines exceeding AC 1 kV in France. (ncpt) FR.4 Application to overhead lines for which technical studies are underway Any decision to apply the requirements of the present standard to new overhead line projects for which technical studies are underway shall be stipulated in the Project Specification. (ncpt) FR.5 Application to overhead lines under construction The requirements of the present standard do not apply to overhead lines under construction. (ncpt) FR.1 Application to radio telecommunication equipment Part 1 and Part 2-8 apply to radio telecommunication equipment mounted on the towers of new overhead lines, particularly with respect to wind and ice assumptions. Radio equipment shall be arranged on the support so that it can be accessed and operations performed in accordance with safety regulations.
Lignes électriques aériennes dépassant 1 kV en courant alternatif - Partie 2-8 : Aspects Normatifs Nationaux (NNA) pour la France (basés sur l’EN 50341-1:2012)
1.1 Généralités (ncpt) FR.1 Domaine d’application de la Partie 1 et de la Partie 2-8 La Partie 1 et la présente Partie 2-8 sont applicables aux lignes aériennes neuves définies au 1.1/FR.2 « Définition d’une ligne aérienne neuve ». (ncpt) FR.2 Définition d’une ligne aérienne neuve Une ligne aérienne neuve désigne toute nouvelle ligne électrique aérienne dépassant 1 kV AC, construite sur fondations neuves et: - encadrée par deux postes ou deux pylônes d’arrêt précédant ces postes. ou - encadrée par un poste ou un pylône d’arrêt à l’une de ses extrémités et en situation de piquage (pylône de piquage inclus) ou d’entrée en coupure à l’autre extrémité. (ncpt) FR.3 Application aux lignes aériennes existantes Cette norme n’est pas applicable aux lignes aériennes existantes dépassant 1 kV AC en France. (ncpt) FR.4 Application aux lignes aériennes en cours d’études techniques Le choix d’utiliser les prescriptions de la présente norme pour les projets de nouvelles lignes aériennes en cours d’études techniques doit être spécifié dans la Spécification de Projet. (ncpt) FR.5 Application aux lignes aériennes en cours de construction Les prescriptions de la présente norme ne sont pas applicables aux lignes aériennes en cours de construction. 1.2 Champ d’application (ncpt) FR.1 Application aux équipements radioélectriques de télécommunication La Partie 1 et la Partie 2-8 sont applicables aux équipements radioélectriques de télécommunication montés sur les pylônes des nouvelles lignes aériennes, en particulier pour les hypothèses de vent et de glace. Les équipements radioélectriques doivent être disposés sur le support de telle manière que l'accès et les interventions puissent être réalisés dans les conditions réglementaires de sécurité.
Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-8. del: Nacionalna normativna določila (NNA) za Francijo (na podlagi EN 50341-1:2012)
Del 1 in ta del 2-8 se uporabljata za nove nadzemne vode, kot so opredeljeni v 1.1/FR.2 »Opredelitev novega nadzemnega voda«. Novi nadzemni vod pomeni vsak nov električni vod za izmenične napetosti več kot 1 kV, postavljen na novih temeljih in: – ob katerem sta dve razdelilni postaji ali dva terminalna stolpa pred omenjenima postajama; ali – ob katerem je razdelilna postaja ali terminalski stolp na eni strani in odcep (vključno z odcepnim stolpom) ali delilnik na drugi strani. Ta standard se ne uporablja za obstoječe nadzemne vode za izmenično napetost več kot 1 kV v Franciji. Odločitev o uporabi zahtev tega standarda za nove projekte nadzemnih vodov, za katere potekajo tehnične študije, je treba določiti v projektni specifikaciji. Zahteve tega standarda ne veljajo za nadzemne vode v gradnji. Del 1 in del 2-8 se uporabljata za radijsko telekomunikacijsko opremo, nameščeno na stolpih novih nadzemnih vodov, zlasti glede predpostavk o vetru in ledu. Radijsko opremo je treba namestiti na nosilec tako, da je lahko dostopna in da deluje v skladu z varnostnimi predpisi.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2019
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Overhead electrical lines exceeding AC 1 kV - Part 2-8: National Normative Aspects
(NNA) for France (based on EN 50341-1:2012)
Ta slovenski standard je istoveten z: EN 50341-2-8:2017
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 50341-2-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2017
ICS 29.240.20
English Version
Overhead electrical lines exceeding AC 1 kV - Part 2-8: National
Normative Aspects (NNA) for France (based on EN 50341-
1:2012)
This European Standard was approved by CENELEC on 2017-08-09.
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, 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50341-2-8:2017 E
Contents
European foreword . 6
0 Introduction . 7
1 Scope . 8
1.1 General . 8
1.2 Field of application . 8
2 Normative references, definitions and symbols . 9
2.1 Normative references . 9
2.2 Definitions .10
2.3 Symbols .10
3 Basis of design . 11
3.2 Requirements of overhead lines .11
3.2.2 Reliability requirements .11
3.2.5 Strength coordination .11
3.2.6 Additional considerations .11
3.3 Limit states .12
3.3.3 Serviceability limit states .12
3.7 Partial factor method and design formula .12
3.7.2 Basic design formula .12
4 Actions on lines . 13
4.1 Introduction .13
4.3 Wind loads .13
4.3.1 Field of application and basic wind velocity .13
4.4 Wind forces on overhead line components .15
4.4.1 Wind forces on conductors .15
4.4.2 Wind forces on insulator sets .15
4.4.3 Wind forces on lattice towers .15
4.4.4 Wind forces on poles.16
4.5 Ice loads .16
4.5.1 General .16
4.6 Combined wind and ice loads .19
4.6.1 Combined probabilities .19
4.7 Temperature effects .20
4.8 Security loads .20
4.8.1 General .20
4.8.2 Torsional loads .20
4.8.3 Longitudinal loads .21
4.9 Safety loads .21
4.9.1 Construction and maintenance loads.21
4.9.2 Loads related to the weight of linesmen .22
4.10 Forces due to short-circuit currents .22
France - 3/65 - EN 50341-2-8:2017
4.11 Other special forces .22
4.11.1 Avalanches, creeping snow .22
4.11.2 Earthquakes .22
4.12 Load cases .23
4.12.2 Standard load cases .23
4.13 Partial factors for actions .25
5 Electrical requirements . 27
5.2 Currents .27
5.2.2 Short-circuit current .27
5.5 Minimum air clearances to avoid flashover .27
5.5.2 Application of the theoretical method in Annex E .27
5.5.3 Empirical method based on European experience .27
5.6 Load cases for calculation of clearances .28
5.6.2 Maximum conductor temperature .28
5.6.3 Wind loads for determination of electric clearances .28
5.6.3.1 Wind load cases . 28
5.6.3.2 Nominal wind loads for determination of internal and external
clearances . 29
5.6.3.3 Extreme wind loads for determination of internal clearances . 29
5.6.4 Ice loads for determination of electric clearances .29
5.6.5 Combined wind and ice loads .30
5.8 Internal clearances within the span and at the top of the support .31
5.9 External clearances .33
5.9.1 General .33
5.9.2 External clearances to ground in areas remote from buildings, roads, etc.34
5.9.3 External clearances to residential and other buildings .37
5.9.4 External clearances to crossing traffic routes .38
5.9.5 External clearances to adjacent traffic routes .44
5.9.6 External clearances to other power lines or overhead telecommunication
lines 45
5.9.7 External clearances to recreational areas (playgrounds, sports areas, etc.).49
5.10 Corona effect .50
5.10.2 Audible noise .50
5.10.2.3 Noise limits . 50
5.10.3 Corona loss .50
5.11 Electric and magnetic fields .50
5.11.1 Electric and magnetic fields under a line .50
6 Earthing systems . 51
6.1 Introduction .51
6.1.3 Earthing measures against lightning effects .51
6.4 Design calculation with regard to human safety .51
6.4.1 Permissible values for touch voltages.51
6.4.2 Touch voltage limits at different locations .51
6.4.3 Basic design of earthing systems with regard to permissible touch voltages .51
7 Supports . 52
7.3 Lattice steel towers .52
7.3.6 Ultimate limit states .52
7.3.6.1 General . 52
7.3.8 Resistance of connections .52
7.3.9 Design assisted by testing .52
7.4 Steel poles .52
7.4.6 Ultimate limit states (EN 1993-1-1:2005 – Chapter 6) .52
7.4.6.1 General . 52
7.4.8 Resistance of connections .53
7.4.8.2 Bolts (other than holding-down bolts) . 53
7.4.8.3 Slip joint connections . 53
7.4.8.5 Welded connections . 53
7.4.8.6 Direct embedding into the concrete . 53
7.4.9 Design assisted by testing .53
7.5 Wood poles .53
7.5.8 Design assisted by testing .53
7.6 Concrete poles .53
7.6.6 Design assisted by testing .53
7.8 Other structures .54
7.9 Corrosion protection and finishes .54
7.9.3 Metal spraying .
...
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