EN 50341-2-18-2016 en Overhead electrical lines exceeding AC 1 kV - Part 2-18 National Normative Aspects (NNA) for Sweden.pdf

1、BS EN 50341-2-18:2016Overhead electrical linesexceeding AC 1 kVPart 2-18: National Normative Aspects (NNA) for Sweden (based on EN 50341-1:2012)BSI Standards PublicationBS EN 50341-2-18:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50341-2-18:2016. This s

2、tandard, together with the following list of National Normative Aspect standards, supersedes BS EN 50423-3:2005 and BS EN 50341-3:2001:Country CodeOrigin RefAT Austrian National Committee BS EN 50341-2-1 BE Belgian National Committee BS EN 50341-2-2 CH Swiss National Committee BS EN 50341-2-3 DE Ger

3、man 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 50341-2-8 GB British National Committee BS EN 50341-2-9:2015GR Greek Nati

4、onal Committee BS EN 50341-2-10 IE Irish National Committee BS EN 50341-2-11 IS Iceland National Committee BS EN 50341-2-12 IT Italian National Committee BS EN 50341-2-13:2017LU Luxemburg National Committee No NNA available NL Nederlands National Committee BS EN 50341-2-15 NO Norwegian National Comm

5、ittee BS EN 50341-2-16:2016PT Portuguese National Committee BS EN 50341-2-17 SE Swedish National Committee BS EN 50341-2-18:2017 CZ Czech National Committee BS EN 50341-2-19:2015EE Estonian National Committee BS EN 50341-2-20:2015 PL Polish National Committee BS EN 50341-2-22:2016SK Slovak National

6、Committee BS EN 50341-2-23:2016 BS EN 50423-3:2005 and BS EN 50341-3:2001 will be withdrawn upon publication of the rest of the series.The UK participation in its preparation was entrusted to Technical Committee PEL/11, Overhead Lines.A list of organizations represented on this committee can be obta

7、ined 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 Standards Limited 2017ISBN 978 0 580 96357 5ICS 29.240.20Compliance wi

8、th 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 March 2017.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NOR

9、M EN 50341-2-18 December 2016 ICS 29.240.20 English Version Overhead electrical lines exceeding AC 1 kV - Part 2-18: National Normative Aspects (NNA) for Sweden (based on EN 50341-1:2012) Lignes lectriques ariennes dpassant 1 kV en courant alternatif - Partie 2-18 : Aspects Normatifs Nationaux (NNA)

10、 pour la Sude (sur la base de lEN 50341-1:2012) This European Standard was approved by CENELEC on 2016-11-01. 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 a

11、lteration. 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 langu

12、age 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

13、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

14、 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 2016 CENELEC All rights of exploitation in any form and by any means res

15、erved worldwide for CENELEC Members. Ref. No. EN 50341-2-18:2016 EBS EN 50341-2-18:2016Sweden 2/85 EN 50341-2-18:2016 Foreword 7 1 Scope 8 2 Normative references, definitions and symbols 8 2.1 Normative references 8 2.2 Definitions 11 2.3 Symbols . 11 3 Basis of design 12 3.2 Requirements of overhea

16、d lines 12 3.2.2 Reliability requirements . 12 3.6 Design values 13 3.6.2 Design values of an action 13 3.7 Partial factor method and design formula 13 3.7.3.2 Design situations related to permanent and variable actions 13 3.7.3.3 Design situations related to permanent, variable and accidental actio

17、ns 14 4 Actions on lines . 14 4.1 Introduction 14 4.3 Wind loads . 14 4.3.4 Turbulence intensity and peak wind pressure . 14 4.4 Wind forces on overhead line components . 14 4.4.1 Wind forces on conductors 14 4.4.1.1 General 14 4.4.1.2 Structural factor . 15 4.4.1.3 Drag factor . 15 4.4.2 Wind force

18、s on insulator sets 15 4.4.3 Wind forces on lattice towers . 15 4.4.3.1 General 15 4.4.3.2 Method 1 15 4.4.3.3 Method 2 16 4.4.4 Wind forces on poles . 16 4.5 Ice load 16 4.5.2 Ice forces on conductors . 16 4.6 Combined wind and ice loads 18 4.6.2 Drag factors and ice densities . 18 4.6.3 Mean wind

19、pressure and peak wind pressure . 18 4.6.4 Equivalent diameter D of ice covered conductor . 18 4.7 Temperature effects . 18 4.8 Security loads 19 BS EN 50341-2-18:2016Sweden - 3/85 - EN 50341-2-18:2016 4.9 Safety loads . 19 4.9.1 Construction and maintenance loads 19 4.12 Load cases . 19 4.12.2 Stan

20、dard load cases 19 4.13 Partial factors for actions . 24 5 Electrical requirements . 26 5.3 Insulation co-ordination 26 5.4 Classification of voltages and overvoltages . 27 5.5 Minimum air clearance distances to avoid flashover . 28 5.6 Load cases for calculation of clearances . 30 5.8 Minimum inter

21、nal clearances within the span and at the top of support 34 5.9 External clearances . 39 5.9.1 General 39 5.9.2 External clearances to ground in areas remote from buildings, roads, etc. 40 5.9.3 External clearances to residential and other buildings 43 5.9.4 External clearances to crossing traffic r

22、outes 44 5.9.6 External clearances to other power lines or overhead telecommunication lines 46 5.9.7 External clearances to recreational areas (playgrounds, sports areas, etc.) 50 6 Earthing systems 51 6.1 Introduction 51 6.1.3 Earthing measures against lightning effects 51 6.1.4 Transferred potenti

23、als 51 6.2 Ratings with regard to corrosion and mechanical strength . 51 6.2.1 Earth electrodes . 51 6.2.2 Earthing and bonding conductors 52 6.4 Dimensioning with regard to human safety . 52 6.4.3 Basic design of earthing systems with regard to permissible touch voltage. 52 6.4.4 Measures in system

24、s with isolated neutral or resonant earthing 54 7 Supports . 54 7.1 Initial design considerations . 54 7.2 Materials 54 7.2.1 Steel materials, bolts, nuts and washers, welding consumables 54 7.2.6 Wood . 54 7.3 Lattice steel towers 55 7.3.1 General 55 BS EN 50341-2-18:2016EN 50341-2-18:2016 - 4/85 -

25、 Sweden 7.3.3 Materials 55 7.3.6 Ultimate limit states 55 7.3.6.1 General 55 7.3.6.3 Tension, bending and compression resistance of members . 55 7.3.6.4 Buckling resistance of members in compression 55 7.3.8 Resistance of connections . 56 7.4 Steel poles . 56 7.4.1 General 56 7.4.6.1 Ultimate limit

26、states, General . 56 7.4.8.1 Connections, Basis 56 7.4.8.2 Bolts (other than holding-down bolts) . 56 7.5 Wood poles 56 7.5.1 General 56 7.5.3 Materials 57 7.5.5 Ultimate limit states 57 7.5.5.2 Calculation of internal forces and moments 57 7.5.5.3 Resistance of wood elements 57 7.5.5.4 Decay condit

27、ions . 58 7.5.7 Resistance of connections . 58 7.5.8 Design assisted by testing . 58 7.6 Concrete poles . 58 7.6.1 General 58 7.6.2 Basis of design 59 7.6.3 Materials 59 7.6.4 Ultimate limit states 59 7.6.5 Serviceability limit states . 59 7.6.6 Design assisted by testing . 60 7.7 Guyed structures 6

28、0 7.7.3 Materials 60 7.7.4.1 Ultimate limit states, Basis . 60 7.7.4.2 Calculation of internal forces and moments 60 7.7.4.3 Second order analysis . 60 7.7.6 Design details for guys 61 7.8 Other structures . 61 7.9 Corrosion protection and finishes 65 7.9.2 Galvanising 66 7.9.3 Metal spraying . 66 7

29、.9.6 Use of weather-resistant steels . 66 7.9.7 Protection of wood poles . 66 BS EN 50341-2-18:2016Sweden - 5/85 - EN 50341-2-18:2016 7.10 Maintenance facilities 67 7.10.3 Safety requirements. 67 8 Foundations . 67 8.1 Introduction 67 8.2 Basis of geotechnical design . 68 8.2.2 Geotechnical design b

30、y calculation . 68 8.2.3 Design by prescriptive measures 69 8.2.4 Load tests and tests on experimental models . 70 8.3 Soil investigation and geotechnical data . 71 8.4 Supervision of construction, monitoring and maintenance 72 9 Conductors and earth-wires . 72 9.1 Introduction 72 9.2 Aluminium base

31、d conductors . 73 9.2.1 Characteristics and dimensions . 73 9.2.3 Conductor service temperatures and grease performance . 73 9.2.5 Corrosion protection 73 9.2.6 Test requirements 74 9.3 Steel based conductors . 74 9.3.1 Characteristics and dimensions . 74 9.3.3 Conductor service temperatures and gre

32、ase characteristics 74 9.3.4 Mechanical requirements 74 9.4 Copper based conductors 74 9.5 Conductors and ground wires containing optical fibre telecommunication circuits. 75 9.5.1 Characteristics and dimensions . 75 9.5.3 Conductor service temperatures . 75 9.5.4 Mechanical requirements 75 9.6 Gene

33、ral requirements 76 9.6.2 Partial factor for conductor 76 9.6.4 Sag - tension calculations 76 9.8 Selection, delivery and installation of conductors 79 10 Insulators . 79 10.2 Standard electrical requirements . 79 10.7 Mechanical requirements . 80 10.10 Characteristics and dimensions of insulators 8

34、0 10.16 Selection, delivery and installation of insulators 80 11 Hardware 81 11.2 Electrical requirements 81 BS EN 50341-2-18:2016EN 50341-2-18:2016 - 6/85 - Sweden 11.2.2 Requirement applicable to current carrying fittings . 81 11.6 Mechanical requirements . 81 11.7 Durability requirements 82 11.14

35、 Selection, delivery and installation of fittings . 82 12 Quality assurance, Checks and taking-over . 83 12.2 Checks and taking-over . 83 Annex E Electrical requirements . 84 E.2 Insulation co-ordination 84 Annex G Earthing systems 84 G.2 Material constants 84 Annex J Lattice steel towers 84 J.5 Des

36、ign resistance of bolted connections . 84 Annex K Steel poles . 84 K.6 Design of holding-down bolts - Table K.2 84 Annex M Geotechnical and structural design of foundations . 85 M.1 Typical values of the geotechnical parameters of soils and rocks 85 M.2.3 Calculation of RS85 M.2.4 Analytical evaluat

37、ion of Rd. 85 BS EN 50341-2-18:2016Sweden 7/85 EN 50341-2-18:2016 European foreword 1 The Swedish National Committee (NC) is identified by the following address: SEK Svensk Elstandard - TK11 Overhead Lines Box 1284 SE-164 29 KISTA Telephone no.: +46 8 444 14 00 Facsimile no.: +46 8 444 14 30 E-mail

38、sekelstandard.se 2 The Swedish NC has prepared this Part 2-18 of EN 50341, listing the Swedish national normative aspects (NNA), under the sole responsibility, and duly passed it through the CENELEC and CLC/TC 11 procedures. NOTE The Swedish NC also takes the sole responsibility for the technically

39、correct co-ordination of this EN 50341-2-18 with EN 50341. It has performed the necessary checks in the frame of quality assurance/control. It is noted however that this quality assurance/control has been made in the framework of the general responsibility of a standard committee under the national

40、laws/regulations. 3 This NNA is normative in Sweden and informative in other countries. 4 This NNA has to be read in conjunction with Part 1 (EN 50341-1). All clause numbers used in this NNA correspond to those of Part 1. Specific subclauses, which are prefixed “SE“, are to be read as amendments to

41、the relevant text in Part 1. Any necessary clarification regarding the application of this NNA in conjunction with Part 1 shall be referred to the Swedish NC who will, in co-operation with CLC/TC 11 clarify the requirements. When no reference is made in this NNA to a specific subclause, then Part 1

42、applies. 5 In the case of “boxed values“ defined in Part 1, amended values (if any), which are defined in this NNA shall be taken into account in Sweden. However, any boxed value, whether in Part 1 or in this NNA, shall not be amended in the direction of greater risk in a Project Specification. 6 Th

43、e national Swedish standards / regulations related to overhead electrical lines exceeding 1 kV (AC) are listed in subclause 2.1/SE NOTE All national standards referred to in this NNA will be replaced by the relevant European Standards as soon as they become available and are declared by the Swedish

44、NC to be applicable and thus reported to the secretary of CLC/TC 11. BS EN 50341-2-18:2016EN 50341-2-18:2016 - 8/85 - Sweden 1 Scope (ncpt) SE.1 Application to existing overhead lines This Part 2-18 is applicable for new overhead lines only and not for existing lines. (A-dev) SE.2 Maintenance, rebui

45、lding or extension of an overhead line Measures related to maintenance of the electrical installation shall fulfill the legislation in force when it was erected. In the case of a rebuilding or extension of an electrical installation (overhead line), the regulations in force shall be applied for the

46、rebuilding or extension. (ELSK-FS 2008:1) (ncpt) SE.3 Replacement This Part 2-18 replaces the Swedish Standards SS-EN 50341-3-18, edition 1 and SS-EN 50423-3-18, edition 3. (ncpt) SE.4 Optical ground wire (OPGW) and optical phase conductor (OPCON) This Part 2-18 is applicable for installation of OPG

47、W and OPCON, also known as OPPC, in overhead lines in Sweden. (ncpt) SE.5 All dielectric self supporting optical cable (ADSS) and optical attached cable (OPAC) This Part 2-18 is applicable for installation of ADSS and OPAC in overhead lines in Sweden. NOTE The allowable electrical field for the ADSS

48、 cable should be taken into consideration when the conductor configuration is determined. 2 Normative references, definitions and symbols 2.1 Normative references (A-dev) SE.1 National normative laws, government regulations Reference Title ELSK-FS 2008:1 Elskerhetsverkets freskrifter om hur starkstr

49、msanlggningar ska vara utfrda The Swedish National Electrical Safety Board - Regulations regarding design, and erection of electrical installations ELSK FS 2008:3 Elskerhetsverkets freskrifter om innehavarens kontroll av elektriska starkstrmsanlggningar och elektriska anordningar The Swedish National Electrical Safety Board - Regulations regarding supervision of the electrical installation by the possessor SFS 2009:22 Starkstrmsfrordning The Swedish Government - Ordinance concerning electrical installations BFS 2011:10 - EKS Boverkets freskrifter och allmnna r