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BS EN 50341-2-7:2023:2024 Edition

BS EN 50341-2-7:2023:2024 Edition

$167.15

Overhead electrical lines exceeding AC 1 kV – National Normative Aspects (NNA) for FINLAND (based on EN 50341-1:2012)

Published By Publication Date Number of Pages
BSI 2024 36
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PDF Catalog

PDF Pages PDF Title
2 undefined
5 European foreword
7 1 Scope
1.1 General
1.2 Field of application
2 Normative references, definitions and symbols
2.1 Normative references
8 3 Basis of design
3.2 Requirements of overhead lines
3.2.2 Reliability requirements
3.2.5 Strength coordination
9 4 Actions on lines
4.3 Wind loads
4.3.1 Field of application and basic wind velocity
4.3.2 Mean wind velocity
4.3.3 Mean wind pressure
4.4 Wind forces on overhead line components
4.4.1 Wind forces on conductors
4.4.1.1 General
10 4.4.1.2 Structural factor
4.4.1.3 Drag factor
4.4.2 Wind forces on insulator sets
4.4.3 Wind forces on lattice towers
4.4.3.1 General
11 4.4.4 Wind forces on poles
4.5 Ice loads
4.5.1 General
12 4.6 Combined wind and ice loads
4.6.2 Drag factors and ice densities
4.7 Temperature effects
4.8 Security loads
4.9 Safety loads
4.9.1 Construction and maintenance loads
13 4.12 Load cases
4.12.1 General
15 4.12.2 Standard load cases
16 4.13 Partial factors for actions
18 5 Electrical requirements
5.5 Minimum air clearance distances to avoid flashover
5.5.1 General
5.6 Load cases for calculation of clearances
5.6.1 Load conditions
19 5.6.2 Maximum conductor temperature
5.6.3 Ice loads for determination of electric clearances
5.8 Internal clearances within the span and at the top of the support
5.9 External clearances
5.9.1 General
5.9.2 External clearances to ground in areas remote from buildings, roads etc.
20 5.9.3 External clearances to residential and other buildings
5.9.4 External clearances to crossing traffic routes
21 5.9.6 External clearances to other power lines or telecommunication lines
23 6 Earthing systems
6.1 Introduction
6.1.4 Transferred potentials
6.4 Dimensioning regarding human safety
6.4.3 Design of earthing systems regarding permissible touch voltage
24 7 Supports
7.3 Lattice steel towers
7.3.1 General
7.3.6 Ultimate limit states
7.3.6.1 General
7.3.6.4 General
7.3.9 Design assisted by testing
25 7.5 Wood poles
7.5.3 Materials
7.5.5 Ultimate limit states
7.5.5.1 Basis
7.5.5.2 Calculation of internal forces and moments
7.5.5.3 Resistance of wood elements
7.5.5.4 Decay conditions
26 7.7 Guyed structures
7.7.1 General
7.7.4 Ultimate limit states
7.7.4.1 Basis
7.7.4.3 Second order analysis
27 7.7.6 Design details for guys
7.10 Maintenance facilities
7.10.3 Safety requirements
29 8 Foundations
8.1 Introduction
30 8.2 Basis of geotechnical design
8.2.1 General
8.2.2 Geotechnical design by calculation
31 8.2.3 Design by prescriptive measures
32 9 Conductors and earth wires
9.1 Introduction
9.6 General requirements
9.6.2 Partial factor for conductors
10 Insulators
10.2 Standard electrical requirements
33 10.11 Type test requirements
11 Hardware
11.6 Mechanical requirements
11.8 Material selection and specification
12 Quality assurance, checks and taking-over
34 Annex J
J.4 Buckling resistance of angles in compression
J.4.3 Slenderness of members
J.4.3.1 General
J.4.4 Secondary bracing members

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BS EN 50341-2-7:2023
$167.15