BS EN 50341-2-4:2019
$215.11
Overhead electrical lines exceeding AC 1 kV – National Normative Aspects (NNA) for GERMANY (based on EN 50341-1:2012)
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 96 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 11 | European foreword |
| 12 | 1 Scope 1.1 General 1.2 Field of application 2 Normative references, definitions and symbols 2.1 Normative references |
| 18 | 2.2 Definitions |
| 23 | 2.3 Symbols |
| 28 | 3 Basis of design 3.2 Requirements of overhead lines 3.2.1 Basic requirements 3.2.2 Reliability requirements 3.2.5 Strength coordination 3.2.6 Additional considerations |
| 29 | 3.4 Actions 3.4.3 Classification of actions by their nature and/or the structural response 3.6 Design values 3.6.3 Design value of a material property 3.6.4 Combination value of a variable action |
| 30 | 4 Actions on lines 4.1 Introduction 4.3 Wind loads |
| 32 | 4.4 Wind forces on overhead line components 4.4.1 Wind forces on conductors |
| 34 | 4.4.2 Wind forces on insulator sets |
| 35 | 4.4.3 Wind forces on lattice towers 4.4.3.1 General 4.4.3.2 Method 1 |
| 37 | 4.4.4 Wind forces on poles 4.5 Ice loads 4.5.2 Ice forces on conductors |
| 39 | 4.6 Combined wind and ice loads 4.6.4 Equivalent diameter DI of ice-covered conductor 4.6.6 Combination of wind velocities and ice loads 4.6.6.1 Extreme ice load combined with a high probability wind velocity 4.8 Security loads 4.8.1 General 4.9 Safety loads 4.9.1 Construction and maintenance loads |
| 40 | 4.9.2 Loads related to the weight of lines men 4.10 Forces due to short-circuit currents 4.11 Other special forces 4.12 Load cases 4.12.1 General |
| 41 | 4.12.2 Standard load cases |
| 44 | 4.13 Partial factors for actions |
| 45 | 5 Electrical requirements 5.2 Currents 5.2.1 Normal current 5.4 Classification of voltages and over-voltages 5.4.2 Representative power frequency voltages Nominal system voltageUnkV Maximum operational voltage UskV Maximum voltage for equipment(minimum value) Um kV 380 420 420 5.4.5 Representative fast-front overvoltage 5.5 Minimum air clearance distances to avoid flashovers 5.5.3 Empirical method based on European experience |
| 46 | 5.6 Load cases for calculation of clearances 5.6.3 Wind loads for determination of electric clearances 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 the determination of electric clearances |
| 47 | 5.6.5 Combined wind and ice loads 5.8 Internal clearances within the span and at the top of support |
| 48 | 5.9 External clearances 5.9.1 General |
| 50 | 5.9.2 External clearances to ground in areas remote from buildings, roads etc. |
| 51 | 5.9.3 External clearances to residential and other buildings |
| 52 | 5.9.4 External clearances to crossing traffic routes |
| 53 | 5.9.5 External clearances to adjacent traffic routes 5.9.6 External clearances to other power lines or overhead telecommunication lines |
| 54 | 5.11 Electric and magnetic fields 5.11.1 Electric and magnetic fields under a line 5.11.2 Electric and magnetic field induction 5.11.3 Interference with telecommunication circuits 6 Earthing systems 6.1 Introduction 6.1.2 Requirements for dimensioning of earthing systems |
| 56 | 6.1.3 Earthing measures against lightning effects 6.3 Rating with regard to thermal strength 6.3.2 Current rating calculation |
| 57 | 6.4 Dimensioning with regard to human safety 6.4.2 Touch voltage limits at different locations 6.4.3 Basic design of earthing systems with regard to permissible touch voltage |
| 58 | 6.4.4 Measures in systems with isolated neutral or resonant earthing 6.5 Site inspection and documentation of earthing systems |
| 59 | 7 Supports 7.1 Initial design considerations 7.2 Materials 7.2.1 Steel materials, bolts, nuts and washers, welding consumables 7.2.6 Wood 7.2.8 Other materials |
| 60 | 7.3 Lattice steel towers 7.3.1 General 7.3.5 Structural analysis 7.3.6 Ultimate limit states 7.3.6.1 General 7.3.6.3 Tensile, bending and compression resistance of members |
| 61 | 7.3.6.4 Buckling resistance of members in compression 7.3.8 Resistance of connections |
| 62 | 7.4 Steel poles 7.4.1 General 7.4.5 Structural analysis 7.4.6 Ultimate limit states (EN 1993-1-1:2005 – Chapter 6) 7.4.6.1 General 7.4.6.2 Resistance of cross section areas |
| 63 | 7.4.7 Serviceability limit states 7.4.8 Resistance of connections 7.4.8.3 Slip joint connections 7.5 Wood poles 7.5.2 Basis of design |
| 64 | 7.5.3 Materials 7.5.5 Ultimate limit states 7.5.5.1 Basis 7.5.5.3 Resistance of wood elements 7.5.6 Serviceability limit states 7.5.7 Resistance of connections 7.6 Concrete poles 7.6.2 Basis of Design |
| 65 | 7.6.4 Ultimate limit states 7.6.5 Serviceability limit states 7.7 Guyed structures 7.7.1 General 7.7.3 Materials |
| 66 | 7.8 Other structures 7.9 Corrosion protections and finishes 7.9.1 General 7.9.2 Galvanising 7.9.4 Paint over galvanising in plant (Duplex system) 7.9.7 Protection of wood poles 7.10 Maintenance facilities 7.10.1 Climbing |
| 68 | 7.10.2 Maintainability 7.10.3 Safety requirements 8 Foundations 8.2 Basis of geotechnical design 8.2.2 Geotechnical design by calculation |
| 69 | 8.2.3 Design by prescriptive measures 8.2.4 Load tests and tests on experimental models 8.6 Interaction between support foundations and soil 9 Conductors and earth wires 9.2 Aluminium based conductors 9.2.1 Characteristics and dimensions |
| 70 | 9.2.3 Conductor service temperatures and grease characteristics |
| 71 | 9.3 Steel based conductors 9.3.1 Characteristics and dimensions 9.3.3 Conductor service temperatures and grease characteristics |
| 72 | 9.3.4 Mechanical requirements 9.6 General requirements 9.6.2 Partial factors for conductors |
| 73 | 9.6.3 Minimum cross sections 9.6.4 Sag-tension calculations |
| 74 | 10 Insulators 10.1 Introduction |
| 75 | 10.4 Pollution performance requirements 10.7 Mechanical requirements |
| 78 | 11 Hardware 11.1 Introduction 11.2 Electrical requirements 11.2.1 Requirements applicable to all fittings 11.2.2 Requirements applicable to current carrying fittings 11.6 Mechanical requirements |
| 80 | 12 Quality assurance, checks and taking-over |
| 81 | Annex G(normative)Calculation methods for earthing systems G.4 Touch voltage and body current |
| 82 | Annex J(normative)Angles in lattice steel towers |
| 91 | Annex M(informative)Geotechnical and structural design of foundations |
| 93 | Annex AA(informative)Assumptions for ice loads |
| 95 | Literature |
