BS EN 50341-2-8:2017
$198.66
Overhead electrical lines exceeding AC 1 kV – National Normative Aspects (NNA) for FRANCE (based on EN 50341-1:2012)
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 70 |
(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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 10 | European foreword |
| 11 | 0 Introduction |
| 12 | 1 Scope 1.1 General 1.2 Field of application |
| 13 | 2 Normative references, definitions and symbols 2.1 Normative references |
| 14 | 2.2 Definitions 2.3 Symbols |
| 15 | 3 Basis of design 3.2 Requirements of overhead lines 3.2.2 Reliability requirements 3.2.5 Strength coordination 3.2.6 Additional considerations |
| 16 | 3.3 Limit states 3.3.3 Serviceability limit states 3.7 Partial factor method and design formula 3.7.2 Basic design formula |
| 17 | 4 Actions on lines 4.1 Introduction 4.3 Wind loads 4.3.1 Field of application and basic wind velocity |
| 19 | 4.4 Wind forces on overhead line components 4.4.1 Wind forces on conductors 4.4.2 Wind forces on insulator sets 4.4.3 Wind forces on lattice towers |
| 20 | 4.4.4 Wind forces on poles 4.5 Ice loads 4.5.1 General |
| 23 | 4.6 Combined wind and ice loads 4.6.1 Combined probabilities |
| 24 | 4.7 Temperature effects 4.8 Security loads 4.8.1 General 4.8.2 Torsional loads |
| 25 | 4.8.3 Longitudinal loads 4.9 Safety loads 4.9.1 Construction and maintenance loads |
| 26 | 4.9.2 Loads related to the weight of linesmen 4.10 Forces due to short-circuit currents 4.11 Other special forces 4.11.1 Avalanches, creeping snow 4.11.2 Earthquakes |
| 27 | 4.12 Load cases 4.12.2 Standard load cases |
| 29 | 4.13 Partial factors for actions |
| 31 | 5 Electrical requirements 5.2 Currents 5.2.2 Short-circuit current 5.5 Minimum air clearances to avoid flashover 5.5.2 Application of the theoretical method in Annex E 5.5.3 Empirical method based on European experience |
| 32 | 5.6 Load cases for calculation of clearances 5.6.2 Maximum conductor temperature 5.6.3 Wind loads for determination of electric clearances 5.6.3.1 Wind load cases |
| 33 | 5.6.3.2 Nominal wind loads for determination of internal and external clearances 5.6.3.3 Extreme wind loads for determination of internal clearances 5.6.4 Ice loads for determination of electric clearances |
| 34 | 5.6.5 Combined wind and ice loads |
| 35 | 5.8 Internal clearances within the span and at the top of the support |
| 37 | 5.9 External clearances 5.9.1 General |
| 38 | 5.9.2 External clearances to ground in areas remote from buildings, roads, etc. |
| 41 | 5.9.3 External clearances to residential and other buildings |
| 42 | 5.9.4 External clearances to crossing traffic routes |
| 48 | 5.9.5 External clearances to adjacent traffic routes |
| 49 | 5.9.6 External clearances to other power lines or overhead telecommunication lines |
| 53 | 5.9.7 External clearances to recreational areas (playgrounds, sports areas, etc.) |
| 54 | 5.10 Corona effect 5.10.2 Audible noise 5.10.2.3 Noise limits 5.10.3 Corona loss 5.11 Electric and magnetic fields 5.11.1 Electric and magnetic fields under a line |
| 55 | 6 Earthing systems 6.1 Introduction 6.1.3 Earthing measures against lightning effects 6.4 Design calculation with regard to human safety 6.4.1 Permissible values for touch voltages 6.4.2 Touch voltage limits at different locations 6.4.3 Basic design of earthing systems with regard to permissible touch voltages |
| 56 | 7 Supports 7.3 Lattice steel towers 7.3.6 Ultimate limit states 7.3.6.1 General 7.3.8 Resistance of connections 7.3.9 Design assisted by testing 7.4 Steel poles 7.4.6 Ultimate limit states (EN 1993-1-1:2005 – Chapter 6) 7.4.6.1 General |
| 57 | 7.4.8 Resistance of connections 7.4.8.2 Bolts (other than holding-down bolts) 7.4.8.3 Slip joint connections 7.4.8.5 Welded connections 7.4.8.6 Direct embedding into the concrete 7.4.9 Design assisted by testing 7.5 Wood poles 7.5.8 Design assisted by testing 7.6 Concrete poles 7.6.6 Design assisted by testing |
| 58 | 7.8 Other structures 7.9 Corrosion protection and finishes 7.9.3 Metal spraying 7.10 Maintenance facilities 7.10.1 Climbing 7.10.3 Safety requirements |
| 59 | 8 Foundations 8.2 Basis of geotechnical design (EN 1997-1:2004 – Section 2) 8.2.2 Geotechnical design by calculation |
| 60 | 8.2.3 Design by prescriptive measures 8.2.4 Load tests and tests on experimental models 8.3 Soil investigation and geotechnical data (EN 1997 1:2004 – Section 3) 8.6 Interactions between support foundations and soil |
| 61 | 9 Conductors and earth wires 9.1 Introduction 9.2 Aluminium-based conductors 9.2.3 Conductor service temperature and grease characteristics 9.2.4 Mechanical requirements 9.3 Steel-based conductors 9.3.3 Conductor service temperature and grease characteristics |
| 62 | 9.3.4 Mechanical requirements 9.5 Conductors and earth wires containing optical fibre telecommunication circuits 9.5.3 Conductor service temperatures 9.5.4 Mechanical requirements |
| 63 | 10 Insulators 10.2 Standard electrical requirements |
| 64 | 11 Hardware 11.9 Characteristics and dimensions of fittings |
| 65 | 12 Quality assurance, checks and taking-over |
| 66 | Annex J (normative) Angles in lattice steel towers |
| 67 | Annex K (normative) Steel poles |
| 68 | Annex M (informative) Geotechnical and structural design of foundations |
