EN 50341-2-13:2017

Overhead electrical lines exceeding AC 1 kV - Part 2-13: National Normative Aspects (NNA) for ITALY (based on EN 50341-1:2012)

This NNA (National Normative Annex) is only applicable to all new overhead lines equipped with bare conductors, covered conductors or cables, with voltages above 1kV AC. This standard is not applicable to overhead lines pre-existing before its coming into force and shall not be applied to maintenance or reconductoring; the standard can be applied in case of significant modifications of existing lines.

Lignes électriques aériennes dépassant 1 kV en courant alternatif - Partie 2-13: Aspects normatifs nationaux (NNA) pour l'ITALIE (basés sur l'’EN 50341-1:2012)

Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-13. del: Nacionalna normativna določila (NNA) za Italijo (na podlagi EN 50341-1:2012)

Ta nacionalna normativna določila (NNA) se uporabljajo samo za nove nadzemne električne vode, opremljene z neizoliranimi vodniki, izoliranimi vodniki ali kabli, z napetostmi nad 1 kV pri izmeničnem toku. Ta standard se ne uporablja za nadzemne električne vode, ki so že obstajali pred začetkom veljavnosti določil, in se ne uporablja za vzdrževanje ali zamenjavo napeljave. Standard je mogoče uporabiti v primeru večjih sprememb obstoječih vodov.

General Information

• Status: Published
• Publication Date: 19-Jan-2017
• Withdrawal Date: 12-Dec-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: 20-Jan-2017
• Completion Date: 20-Jan-2017
• Ref Project: SIST EN 50341-2-13:2018 - Overhead electrical lines exceeding AC 1 kV - Part 2-13: National Normative Aspects (NNA) for ITALY (based on EN 50341-1:2012)

Relations

• Amended By: EN 50341-2-13:2017/A1:2017 - Overhead electrical lines exceeding AC 1 kV - Part 2-13: National Normative Aspects (NNA) for ITALY (based on EN 50341-1:2012)
• Effective Date: 18-Apr-2017

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Overhead electrical lines exceeding AC 1 kV - Part 2-13: National Normative Aspects (NNA) for ITALY (based on EN 50341-1:2012)29.240.20DaljnovodiPower transmission and distribution linesICS:Ta slovenski standard je istoveten z:EN 50341-2-13:2017SIST EN 50341-2-13:2018en01-februar-2018SIST EN 50341-2-13:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 50341-2-13
January 2017 ICS 29.240.20
English Version
Overhead electrical lines exceeding AC 1 kV - Part 2-13: National Normative Aspects (NNA) for ITALY (based on EN 50341-1:2012)
Lignes électriques aériennes dépassant 1 kV en courant alternatif - Partie 2-13: Aspects normatifs nationaux (NNA) pour l'ITALIE (basés sur l'EN 50341-1:2012)
This European Standard was approved by CENELEC on 2016-12-13. 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, Serbia, 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 © 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50341-2-13:2017 E SIST EN 50341-2-13:2018

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Contents
European foreword . 4 1 Scope . 5 1.1 General . 5 1.2 Field of application . 5 2 Normative references, definitions and symbols . 5 2.1 Normative references . 5 2.2 Definitions . 7 2.3 Symbols . 7 3 Basis of design . 7 3.1 Introduction . 7 3.2 Requirements of overhead lines. 7 4 Actions on lines . 7 4.1 Introduction . 7 4.3 Wind loads . 8 4.5 Ice loads . 12 4.6 Combined wind and ice or snow loads . 13 4.7 Temperature effects . 13 4.8 Security loads . 15 4.9 Safety loads . 16 4.11 Other special forces . 16 4.12 Load cases . 17 4.13 Partial factors for actions. 18 5 Electrical requirements . 18 5.6 Load cases for clearances calculation . 18 5.8 Internal clearances within the span and at the top of the tower . 18 5.9 External
clearances . 20 5.11 Electric and magnetic fields . 23 6 Earthing systems . 24 7 Supports . 24 7.3
Lattice steel towers . 24 7.5 Wood poles . 25 7.10 Maintenance facilities. 25 8 Foundations . 25 8.1 Introduction . 25 8.2 Basis of geotechnical design
(EN 1997-1:2004 – Section 2) . 25 9 Conductors and earth-wires. 26 9.1 Introduction . 26 9.2 Aluminium based conductors . 26 SIST EN 50341-2-13:2018

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9.3 Steel based conductors . 26 9.4 Copper based conductors . 26 9.6 General requirements . 27 10 Insulators . 27 10.7 Mechanical requirements . 27 11 Hardware . 28 11.6 Mechanical requirements . 28 12 Quality assurance, checks and taking-over . 28 Annex J . 30 J.4
Buckling resistance of angle in compression (see 7.3.6.4) . 30 J.5 Design resistance for bolted connections (see 7.3.8) . 32 J.5.1
General . 32 SIST EN 50341-2-13:2018

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European foreword
1. The Italian National Committee (NC) is identified by the following address:
Italian Electrotechnical National Committee
Via Saccardo 9
20134 Milano
Italy
Phone n°. ++39 02 21006.1
Fax n°. ++39 02 21006210
Committee 11/7 – Overhead electrical lines
E-Mail [e-mail].
2. The Italian NC has prepared this Part 2-13 (EN 50341-2-13) listing the Italian National Normative Aspects
(NNA) under its sole responsibility and duly passed it through the CENELEC and CLC/TC 11 procedures.
NOTE: The Italian NC takes sole responsibility for the technically correct co-ordination of this NNA with EN 50341-1. It has performed the necessary checks in the frame of quality assurance/control. However, it is noted that this quality control has been already made in the framework of the general responsibility of a standards committee under the national laws/regulations.
3.
This NNA is normative in Italy and informative for other countries.
4. This NNA has to be read in conjunction with Part 1 (EN 50341-1). All clause numbers used in this NNA correspond to those of Part 1. Specific subclauses, which are prefixed “IT”, are to be read as amendments to the relevant text in Part 1. Any necessary clarification regarding the application of this NNA in conjunction with Part 1, shall be referred to the Italian NC who will, in co-operation with CLC/TC 11, clarify the requirements.
When no reference is made in this NNA to a specific subclause, then Part 1 applies.
5. In the case of “boxed values” defined in Part 1, amended values (if any), which are defined in this NNA, shall be taken into account in Italy.
However, any boxed value, whether defined in Part 1 or in this NNA, shall not be amended in the direction of greater risk in a Project Specification.
6. The national Italian standards/regulations related to overhead electrical lines exceeding 1 kV (AC) are listed in subclause 2.1/IT.1 and 2.1/IT.2.
NOTE: All national standards referred to in this NNA will be replaced by the relevant European Standards as soon as they become available and are declared by the Italian NC to be applicable and thus reported to the secretary of CLC/TC 11. SIST EN 50341-2-13:2018

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1 Scope 1.1 General (ncpt) IT.1
New overhead line This NNA (National Normative Annex) is only applicable to all new overhead lines equipped with bare conductors, covered conductors or cables, with voltages above 1kV AC. This standard is not applicable to overhead lines pre-existing before its coming into force and shall not be applied to maintenance or reconductoring; the standard can be applied in case of significant modifications of existing lines.
1.2 Field of application (ncpt) IT.1
Field of application
This standard specifies the general safety requirements, clarifies the actions that shall be carried out in the project and their relevant combinations, defines the characteristics of materials, products and any other aspects relevant to safety of electrical overhead lines as reported in the following clause 2. With reference to structural safety aspects, in absence of specific indications, and as an integration to this standard, the dispositions reported in “Norme tecniche sulle costruzioni” apply (see subclause 2.1). For what concerns structural aspects this standard applies also to D.C. overhead lines. For details concerning the application of this standard to telecommunication systems involving optical fibres either incorporated in or wrapped around earth-wires or conductors or suspended from overhead line supports, reference should be made to the Project Specifications.
2 Normative references, definitions and symbols 2.1 Normative references (A-dev) IT.1 National normative laws, government regulations
List of Law Decrees, Ministerial Decrees, Decrees of the President of the Minister’s Council: − In the following text the new Italian Technical Standard, reported in the Ministerial Decree 14.01.2008 promulgated in force of article 5, subsection 2 of Law Decree 28 May 2004 n. 136 turned into law 27.07.2004 n. 186 and the articles 52 e 83 of D.P.R. 06.06.2001, n. 380, contained the “Testo Unico delle disposizioni legislative e regolamentari in materia edilizia” will be referred as “Norme tecniche sulle costruzioni”. − Decree of the President of the Ministers’ Council, 23 April 1992.
Limiti massimi di esposizione ai campi elettrico e magnetico generati alla frequenza industriale nominale (50 Hz) negli ambienti abitativi e nell’ambiente esterno. Maximum limits of exposure to power frequency (50 Hz) electric and magnetic fields in inhabited buildings and external environment. − Decree of the Ministers of Public Works and of Internal Affairs, 16 January 1996.
Technical standard related to “Criteri generali per la verifica di sicurezza delle costruzioni e dei carichi e sovraccarichi”.
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− Decree of the President of the Ministers’ Council, 8 July 2003.
“Fissazione dei limiti di esposizione, dei valori di attenzione e degli obiettivi di qualità per la protezione della popolazione dalle esposizioni ai campi elettrici e magnetici alla frequenza di rete (50 Hz) generati dagli elettrodotti”.
Prescription of the exposition limits, attention values and quality objectives for the protection of people from the expositions to electrical and magnetic fields at power frequency (50 Hz). (ncpt) IT.2 National technical standards
List of Standard: − CEI 103-6 (1997-12) Protezione delle linee di telecomunicazione agli effetti dell’induzione elettromagnetica provocata dalle linee elettriche vicine in caso di guasto. Protection of telecommunication lines against harmful effects produced by power lines in fault conditions − CEI 7-1 (1997-09) Norme per conduttori di rame e leghe di rame per linee elettriche aeree. Requirements for copper and copper-alloy conductors for electrical overhead lines. − CEI 7-2 (1997-09) Norme per conduttori di alluminio, alluminio-acciaio, lega di alluminio, e lega di alluminio-acciaio per linee elettriche aeree. Requirements for all aluminium, aluminium-steel reinforced, all aluminium alloy and aluminium alloy-steel reinforced conductors for electrical overhead lines. − CEI 7-6 (1997-04) Norme per il controllo della zincatura a caldo per immersione su elementi di materiale ferroso destinati a linee e impianti elettrici.
Requirements for checking hot galvanizing by immersion on ferrous components used in lines and electrical installations.
− CEI 7-10 (1997-09) Norme per conduttori di acciaio rivestito di rame a filo unico ovvero cordati destinati a linee di telecomunicazione ed a linee di trasporto energia.
Requirements for copper clad steel conductors, single wire and stranded, for telecommunication and power lines.
− CEI 7-11 (1997-09) Norme per conduttori di acciaio rivestito di alluminio a filo unico e a corda per linee elettriche aeree.
Requirements for aluminium clad steel conductors, single wire and stranded, for electrical overhead lines.
− Guida CEI 36 (1997-10) R
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