EN 50341-2-22:2016

Overhead electrical lines exceeding AC 1 kV - Part 2-22: National Normative Aspects (NNA) for Poland (based on EN 50341-1:2012)

This NNA determines the requirements which shall be fulfilled while designing and constructing of new overhead lines with nominal system voltages exceeding 1 kV AC. The scope of use of this NNA for temporary lines shall be determined by the Project Specification. For modernisations, reconstructions and refurbishments of the existing lines, the scope and the requirement to comply with PN-EN-50341-1, together with this NNA, shall be determined by the Project Specification. 1.2 Field of application (ncpt) PL.1 Overhead lines with covered conductors This NNA applies to overhead lines with covered conductors and overhead insulated cable system with nominal voltage exceeding 1 kV up to 45 kV AC. Additional requirements and simplifications, which apply only to this range of voltages, have been determined. This NNA does not contain requirements applicable for designing and constructing overhead lines with nominal voltage exceeding 45 kV AC, with covered conductors, where internal and external clearances can be smaller than specified in the NNA. (ncpt) PL.2 Optical conductors/wires This NNA also applies to optical phase conductors (OPCON) and optical ground wires (OPGW), containing optical fibre telecommunication circuits, installed on overhead line supports. (ncpt) PL.3 All Dielectric Self Supporting (ADSS) cables This NNA applies to all dielectric cables (ADSS) only within the scope of their influence on the load of the support and the requirements of the insulator clearances. (ncpt) PL.4 Installation of telecommunication fittings The NNA also applies to the installation of telecommunication equipment mounted on the new line structures with their primary function as of overhead line supports.

Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-22. del: Nacionalna normativna določila (NNA) za Poljsko (na podlagi EN 50341-1:2012)

Ta nacionalna normativna določila določajo zahteve, ki jih je treba izpolniti pri načrtovanju in izgradnji
novih nadzemnih vodov za nominalne omrežne izmenične napetosti nad 1 kV. Področje uporabe teh nacionalnih normativnih določil
za začasne vode je treba opredeliti v projektni specifikaciji. Za posodobitve,
rekonstrukcije in obnove obstoječih vodov je treba področje uporabe in zahteve glede skladnosti
s standardom PN-EN-50341-1 (skupaj s temi nacionalnimi normativnimi določili) določiti v projektni specifikaciji.

General Information

• Status: Published
• Publication Date: 10-Mar-2016
• Withdrawal Date: 15-Feb-2019
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: CLC/TC 11 - Overhead electrical lines exceeding 1 kV a.c. (1,5 kV d.c.)
• Drafting Committee: CLC/TC 11 - Overhead electrical lines exceeding 1 kV a.c. (1,5 kV d.c.)
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 11-Mar-2016
• Completion Date: 11-Mar-2016
• Ref Project: SIST EN 50341-2-22:2016 - Overhead electrical lines exceeding AC 1 kV - Part 2-22: National Normative Aspects (NNA) for Poland (based on EN 50341-1:2012)

Relations

• Replaced By: EN 50341-2-22:2022 - Overhead electrical lines exceeding AC 1 kV - Part 2-22: National Normative Aspects (NNA) for Poland (based on EN 50341-1:2012)
• Effective Date: 29-Mar-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2016
1DG]HPQLHOHNWULþQLYRGL]DL]PHQLþQHQDSHWRVWLQDGN9GHO1DFLRQDOQD
QRUPDWLYQDGRORþLOD11$]D3ROMVNRQDSRGODJL(1
Overhead electrical lines exceeding AC 1 kV - Part 2-22: National Normative Aspects
(NNA) for Poland (based on EN 50341-1:2012)
Ta slovenski standard je istoveten z: EN 50341-2-22:2016
ICS:
29.240.20 Daljnovodi Power transmission and
distribution lines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50341-2-22

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2016
ICS 29.240.20
English Version
Overhead electrical lines exceeding AC 1 kV - Part 2-22:
National Normative Aspects (NNA) for Poland (based on EN
50341-1:2012)
This European Standard was approved by CENELEC on 2016-02-16. 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 alteration.
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 language 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 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 Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für 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 reserved worldwide for CENELEC Members.
Ref. No. EN 50341-2-22:2016 E
Poland 2/70 EN 50341-2-22:2016

Table of contents
European foreword . 7
1.     Scope . 8
1.1    General . 8
1.2    Field of application . 8
2.     Normative references, definitions and symbols . 8
2.1    Normative references . 8
2.2  Definitions – in alphabetical order in Polish language . 11
2.3  Definitions. 15
3.      Basis of design . 16
3.2 Requirements of overhead lines . 16
3.2.2 Reliability requirements . 16
3.2.3 Security requirements . 16
3.2.8 Durability . 17
3.6 Design values . 16
3.6.2 Design value of an action . 17
4. Action on lines . 17
4.3 Wind loads . 17
4.3.1 Field of application and basic wind velocity . 17
4.3.2 Mean wind velocity . 18
4.3.3 Mean wind pressure . 18
4.3.5 Wind forces on any overhead line component . 18
4.4 Wind forces on overhead line components . 19
4.4.1 Wind forces on conductors . 19
4.4.1.1 General . 20
4.4.1.2 Structural factor . 20
4.4.1.3 Drag factor . 20
4.4.2 Wind forces on insulator sets . 20
4.4.3 Wind forces on lattice towers. . 20
4.4.3.1 General. . 20
4.4.3.2 Method 1 . 20
4.4.4 Wind forces on poles . 20
4.5 Ice loads . 20
4.5.1 General . 20
4.5.2 Ice forces on conductors . 22
4.6 Combined wind and ice loads . 22
4.6.2 Drag factors and ice densities . 22
4.6.3 Mean wind pressure and peak wind pressure . 22
4.6.6 Combination of wind velocities and ice loads . 22
4.6.6.1 Extreme ice load I combined with a high probability wind velocity V . 22
T IH
Poland 3/70 EN 50341-2-22:2016

4.6.6.2 Nominal ice load I combined with low probability wind velocity V . 22
3 IL
4.7 Temperature effects . 23
4.8 Security loads . 23
4.8.1 General . 23
4.9 Safety loads . 23
4.9.2 Loads related to the weight of linesmen . 23
4.10 Forces due to short – circuit currents. 23
4.12 Load cases . 23
4.12.1 General . 23
4.12.2 Standard load cases . 23
4.13 Partial factors for actions . 25
5.     Electrical requirements . 25
5.2 Currents . 25
5.2.1  Normal current . 26
5.3      Insulation co-ordination.26
5.5      Minimum air clearance distances to avoid flashover . 26
5.5.3  Empirical method based on European experience . 26
5.6    Load cases for calculation of clearances . 26
5.6.2 Maximum conductor temperature. 27
5.6.3 Wind loads for determination of electric clearances . 27
5.6.3.2 Nominal wind loads for determination of internal and external clearances . 27
5.6.3.3 Extreme wind load for determination of internal clearances . 27
5.6.4 Ice loads for determination of electric clearances . 27
5.6.5 Combined wind and ice loads . 28
5.8    Internal clearances within the span and at the top of support . 28
5.9    External clearances . 34
5.9.1  General . 34
5.9.2 External clearances to ground in areas remote from buildings, roads, etc. . 34
5.9.3 External clearances to residential and other buildings . 36
5.9.4 External clearances to crossing traffic routes . 39
5.9.5 External clearances to adjacent traffic routes . 42
5.9.6 External clearances to other power lines or overhead telecommunication lines . 44
5.9.7 External clearances to recreational areas (playgrounds, sport areas, etc.) . 46
5.10    Corona effect . 48
5.10.1  Radio noise . 48
5.10.1.3 Noise limits . 48
5.10.2  Audible noise . 48
5.10.2.3 Noise limits . 48
5.11  Electric and magnetic fields . 49
5.11.1   Electric and magnetic fields under a line . 49
6. Earthing systems . 49
6.1.2 Requirements for dimensioning of earthing systems . 49

6.1.3 Earthing measures against lightning effects . 49
6.1.4 Transferred potentials . 50
6.2 Ratings with regard to corrosion and mechanical strength .
...