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BS EN 50341-2-1:2022 – TC:2023 Edition

BS EN 50341-2-1:2022 – TC:2023 Edition

$280.87

Tracked Changes. Overhead electrical lines exceeding AC 1 kV – National Normative Aspects (NNAs) for Austria (based on EN 50341-1:2012)

Published By Publication Date Number of Pages
BSI 2023 218
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PDF Catalog

PDF Pages PDF Title
1 30478643
119 A-30477629
120 undefined
126 European Foreword
Untitled
127 1 Scope
2 Normative references, definitions and symbols
2.1 Normative references
128 2.2 Definitions
130 2.3 Symbols
131 3 Basis of design
3.2 Requirements of overhead lines
3.2.2 Reliability requirements
4 Actions on lines
4.3 Wind loads
4.3.1 Field of application and basic wind velocity
4.3.2 Mean wind velocity
132 4.3.3 Mean wind pressure
4.3.4 Turbulence intensity and peak wind pressure
4.4 Wind forces on overhead line components
4.4.1 Wind forces on conductors
4.4.1.1 General
4.4.1.2 Structural factor
4.4.1.3 Drag factor
4.4.2 Wind forces on insulator sets
133 4.4.3 Wind forces on lattice towers
4.4.3.1 General
4.4.4 Wind forces on poles
4.5 Ice loads
4.5.1 General
4.5.2 Ice forces on conductors
134 4.6 Combined wind and ice loads
4.6.2 Drag factors and ice densities
4.6.3 Mean wind pressure and peak wind pressure
4.6.6 Combination of wind velocities and ice loads
4.6.6.1 Extreme ice load IT combined with a high probability wind velocity VIH
4.7 Temperature effects
4.11 Other special forces
4.11.3 Forces as a result of enhanced use
135 4.12 Load cases
4.12.2 Standard load cases
144 4.13 Partial factors for actions
5 Electrical requirements
5.2 Currents
5.2.1 Normal current
145 5.4 Classification of voltages and overvoltages
5.4.2 Representative power frequency voltages
5.5 Minimum air clearance distances to avoid flashover
5.5.1 General
5.5.3 Empirical method based on European experience
5.6 Load cases for the calculation of clearances
5.6.1 Load conditions
5.6.2 Maximum conductor temperature
146 5.6.3 Wind loads for determination of electric clearances
5.6.3.1 Wind load cases
5.6.4 Ice loads for determination of electric clearances
5.6.5 Combined wind and ice loads
147 5.8 Internal clearances within the span and at the top of support
148 5.9 External clearances
5.9.1 General
152 5.9.2 External clearances to ground in areas remote from buildings, roads, etc.
155 5.9.3 External clearances to residential and other buildings
170 5.9.4 External clearances to crossing traffic routes
182 5.9.6 External clearances to other power lines or overhead telecommunication lines
189 5.9.7 External clearances to recreational areas (playgrounds, sports areas, etc.)
191 5.11 Electric and magnetic fields
5.11.1 Electric and magnetic fields under a line
6 Earthing systems
6.4 Dimensioning with regard to human safety
6.4.1 Permissible values for touch voltages
6.4.2 Touch voltage limits at different locations
192 6.4.3 Basic design of earthing systems with regard to permissible touch voltag
7 Supports
7.1 Initial design considerations
7.1.1 Introduction
7.3 Lattice steel towers
193 7.3.6.4 Buckling resistance of members in compression
7.4 Steel poles
7.4.7 Serviceability limit states (EN 199311:2005 – chapter 7)
7.4.8 Resistance of connections
7.4.8.2 Bolts (other than holding-down bolts)
7.5 Wood poles
7.5.3 Materials
7.5.4 Durability
7.5.5 Ultimate limit states
7.5.5.2 Calculation of internal forces and moments
194 7.5.5.3 Resistance of wood elements
7.5.6 Serviceability limit states
7.5.7 Resistance of connections
195 7.6 Concrete poles
7.6.4 Ultimate limit states
7.6.5 Serviceability limit states
7.6.6 Design assisted by testing
7.7 Guyed structures
7.7.6 Design details for guys
196 7.8 Other structures
7.10 Maintenance facilities
7.10.3 Safety requirements
8 Foundations
8.1 Introduction
8.2 Basis of geotechnical design (EN 1997-1:2004 – Section 2)
8.2.2 Geotechnical design by calculation
197 8.2.3 Design by prescriptive measures
8.6 Interactions between support foundations and soil
9 Conductors and earth-wires
9.1 Introduction
9.2 Aluminium based conductors
9.3 Steel based conductors
9.3.1 Characteristics and dimensions
9.3.6 Test requirements
9.5 Conductors and ground wires containing optical fibre telecommunication circuits
198 9.6 General requirements
200 9.6.3 Minimum cross-sections
201 9.8 Selection, delivery and installation of conductors
10 Insulators
10.2 Standard electrical requirements
10.7 Mechanical requirements
10.10 Characteristics and dimensions of insulators
10.13 Routine test requirements
202 11 Hardware
11.2 Electrical requirements
11.2.1 Requirements applicable to all fittings
11.6 Mechanical requirements
11.9 Characteristics and dimensions of fittings
12 Quality assurance, checks and taking-over
204 Annex G (normative)Calculation methods for earthing systems
206 Annex H (informative)Installation and measurements of earthing systems
208 Annex J(normative)Angles in lattice steel towers
209 Annex M(informative)Geotechnical and structural design of foundations
210 Annex S(normative)Geotechnical foundation design according to practically proved methods based on characteristic loads
215 Annex T(normative)Supplementary provisions for the design and realisation of concrete and reinforced concrete foundations
216 Annex U(normative)Stranded-conductors and cables with telecommunication components carried along on supports of overhead lines

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BS EN 50341-2-1:2022 - TC
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