EN 50341-2-8-2017 en Overhead electrical lines exceeding AC 1 kV - Part 2-8 National Normative Aspects (NNA) for France (based on EN 50341- 1 2012).pdf

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1、Overhead electrical lines exceeding AC 1 kVPart 2-8: National Normative Aspects (NNA) for France (based on EN 50341-1:2012)BS EN 50341-2-8:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 50341-

2、2-8:2017.This Standard, together with the following list of National Normative Aspect Standards, supersedes BS EN 50423-3:2005 and BS EN 50341-3:2001 Country Code Origin RefAT Austrian National Commit-teeBS EN 50341-2-1BE Belgian National Committee BS EN 50341-2-2CH Swiss National Committee BS EN 50

3、341-2-3DE German National Committee BS EN 50341-2-4:2016DK Danish National Committee BS EN 50341-2-5:2017ES Spanish National Committee BS EN 50341-2-6:2017FI Finnish National Committee BS EN 50341-2-7:2015FR French National Committee BS EN 50341-2-8GB British National Committee BS EN 50341-2-9:2017G

4、R Greek National Committee BS EN 50341-2-10IE Irish National Committee BS EN 50341-2-11IS Iceland National Committee BS EN 50341-2-12IT Italian National Committee BS EN 50341-2-13:2017LU Luxemburg National Com-mitteeNo NNA availableNL Nederlands National Com-mitteeBS EN 50341-2-15NO Norwegian Nation

5、al Com-mitteeBS EN 50341-2-16:2016PT Portuguese National Com-mitteeBS EN 50341-2-17SE Swedish National Committee BS EN 50341-2-18:2016CZ Czech National Committee BS EN 50341-2-19:2015EE Estonian National Commit-teeBS EN 50341-2-20:2015BRITISH STANDARDBS EN 50341-2-8:2017Country Code Origin RefPL Pol

6、ish National Committee BS EN 50341-2-22:2016SK Slovak National Committee BS EN 50341-2-23:2016BS EN 504243-3:2005 and BS EN 50341-3:2001 will be withdrawn upon publication of the rest of the series.The UK participation in its preparation was entrusted to Technical Committee PEL/11, Overhead Lines.A

7、list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standard

8、s Limited 2017ISBN 978 0 580 98811 0ICS 29.240.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2017.Amendments/corrigenda issued since publicationD

9、ate Text affectedBRITISH STANDARD BS EN 50341-2-8:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50341-2-8 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

10、 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, Ital

11、y, 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 Comit Europen de Normalisation Electrotechnique Europisches Komi

12、tee fr 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 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50341-2-8 O

13、ctober 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 Austr

14、ia, 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, Sloveni

15、a, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CENELEC All rig

16、hts of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50341-2-8:2017 E BS EN 50341-2-8:2017EN 50341-2-8:2017 - 2/65 - France Contents European foreword 6 0 Introduction . 7 1 Scope 8 1.1 General 8 1.2 Field of application . 8 2 Normative references, def

17、initions 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 stat

18、es 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 force

19、s on insulator sets .15 4.4.3 Wind forces on lattice towers .15 4.4.4 Wind forces on poles16 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 Longi

20、tudinal 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 BS EN 50341-2-8:2017EN 50341-2-8:2017 - 2/65 - France Contents European foreword 6 0 Introduction . 7 1 Scope 8 1.1 General

21、 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 consideratio

22、ns .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 compon

23、ents 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 poles16 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

24、 .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

25、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

26、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 det

27、ermination 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 Ex

28、ternal clearances .33 5.9.1 General 33 5.9.2 External clearances to ground in areas remote from buildings, roads, etc34 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.

29、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

30、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 voltages51 BS EN 50341-2-8:2017EN 50341-2-8:2017 - 4/65 - Franc

31、e 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

32、.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

33、. 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 54 7.10 Maintenance facilities .54 7.10.1 Climbing .54 7

34、.10.3 Safety requirements .54 8 Foundations 55 8.2 Basis of geotechnical design (EN 1997-1:2004 Section 2) 55 8.2.2 Geotechnical design by calculation 55 8.2.3 Design by prescriptive measures .56 8.2.4 Load tests and tests on experimental models .56 8.3 Soil investigation and geotechnical data (EN 1

35、997 1:2004 Section 3) .56 8.6 Interactions between support foundations and soil 56 9 Conductors and earth wires 57 9.1 Introduction 57 9.2 Aluminium-based conductors .57 9.2.3 Conductor service temperature and grease characteristics 57 9.2.4 Mechanical requirements .57 9.3 Steel-based conductors .57

36、 9.3.3 Conductor service temperature and grease characteristics 57 9.3.4 Mechanical requirements .58 BS EN 50341-2-8:2017EN 50341-2-8:2017 - 4/65 - France 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 Suppor

37、ts 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

38、 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 te

39、sting .53 7.8 Other structures .54 7.9 Corrosion protection and finishes 54 7.9.3 Metal spraying 54 7.10 Maintenance facilities .54 7.10.1 Climbing .54 7.10.3 Safety requirements .54 8 Foundations 55 8.2 Basis of geotechnical design (EN 1997-1:2004 Section 2) 55 8.2.2 Geotechnical design by calculat

40、ion 55 8.2.3 Design by prescriptive measures .56 8.2.4 Load tests and tests on experimental models .56 8.3 Soil investigation and geotechnical data (EN 1997 1:2004 Section 3) .56 8.6 Interactions between support foundations and soil 56 9 Conductors and earth wires 57 9.1 Introduction 57 9.2 Aluminiu

41、m-based conductors .57 9.2.3 Conductor service temperature and grease characteristics 57 9.2.4 Mechanical requirements .57 9.3 Steel-based conductors .57 9.3.3 Conductor service temperature and grease characteristics 57 9.3.4 Mechanical requirements .58 France - 5/65 - EN 50341-2-8:2017 9.5 Conducto

42、rs and earth wires containing optical fibre telecommunication circuits 58 9.5.3 Conductor service temperatures 58 9.5.4 Mechanical requirements .58 10 Insulators 59 10.2 Standard electrical requirements .59 11 Hardware 60 11.9 Characteristics and dimensions of fittings .60 12 Quality assurance, chec

43、ks and taking-over 61 Annex J (normative) Angles in lattice steel towers . 62 Annex K (normative) Steel poles 63 Annex M (informative) Geotechnical and structural design of foundations 64 BS EN 50341-2-8:2017EN 50341-2-8:2017 - 6/65 - France European foreword 1 The French National Committee (NC) is

44、identified by the following address: AFNOR Normalisation Dpartement Electrotechnologies 11, rue Francis de Pressens 93571 La Plaine Saint-Denis Cedex Tel.: +33 (0)1 41 62 80 00 Fax: +33 (0)1 49 17 90 00 www.afnor.org 2 The French NC has prepared the present EN 50341-2-8:2017 (Part 2-8), listing the

45、French National Normative Aspects; it is solely responsible for it and has duly incorporated it into the procedures of CENELEC and CLC/TC 11. Note The French NC takes full responsibility for the satisfactory technical coordination of the present Part 2-8 and EN 50341-1:2012. Any quality control/assu

46、rance checks necessary have been performed. However, it should be noted that such quality control/assurance has been performed under the general responsibility of the French NC pursuant to national laws and regulations. 3 Part 2-8 is normative in France and informative for other countries. 4 Part 2-

47、8 shall be read in conjunction with EN 50341-1:2012 (Part 1). All Clause numbers used in the present Part 2-8 correspond to the numbering in Part 1. Specific subclauses with the prefix “FR“ shall be read as amendments to the associated text in Part 1. All requests for clarification relating to the a

48、pplication of Part 2-8 in relation to Part 1 shall be sent to the French NC which, in conjunction with CLC/TC 11, will clarify the requirements. When no reference is made to a specific subclause in Part 2-8, Part 1 applies. 5 For the “boxed values“ defined in Part 1, any amended values defined in Pa

49、rt 2-8 shall be applied in France. None of the boxed values present in Part 1 or Part 2-8 shall be amended in such a way as to increase the risk in a Project Specification. 6 The regulations and standards specifically used in the present Part 2-8 and relating to overhead electrical lines exceeding AC 1 kV are listed in subclauses 2.1/FR.1 to 2.1/FR.6. NOTE All national standards referred to in the present Part 2-8 will be replaced by the related European Standards as they become available and are declared applicable by the French NC and therefore reported