SIST EN 50341-2-24:2019
(Main)Overhead electrical lines exceeding AC 1 kV - Part 2-24: National Normative Aspects (NNA) for Romania (based on EN 50341-1:2012)
Overhead electrical lines exceeding AC 1 kV - Part 2-24: National Normative Aspects (NNA) for Romania (based on EN 50341-1:2012)
1.1 General
1.1 RO.1 General
(ncpt) This Part 2-24 gives the requirements for planning, design and construction of overhead electrical lines with nominal voltages exceeding A.C. 1 kV operating at 50 Hz frequency.
The present Part 2-24 is not applicable for existing overhead electrical lines unless specifically required by Project Specification. The power installations of overhead lines, that are in different stages of design or construction, can be finalised in conformity with the standards in force at project beginning.
For the application of this standard for specific requirements relaring to modernization, increasing safety and transport capacity of existing overhead lines, reference shall be specified in the Project Specification. At the same time, the correlation between relevant regulations and associated standards shall be established in the Project Specifications.
The extension of existing electrical lines is considered as new overhead lines, except the junction points that shall be detailed in the Project Specifications.
1.2 Field of application
1.2 RO.1 Overhead electrical lines with insulated conductors
(ncpt) This Part 2-24 is applicable for the design and construction of overhead electrical lines with insulated conductors where the internal and external clearances can be smaller than those specified in Part 1 (SR EN 50341-1:2013).
Lignes électriques aériennes dépassant 1 kV en courant alternatif - Partie 1: Exigences générales - Spécifications communes
Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-24. del: Nacionalna normativna določila (NNA) za Romunijo (na podlagi EN 50341-1:2012)
1.1 Splošno
1.1 RO.1 Splošno
(NCPT) 2-24. del tega standarda določa zahteve za projektiranje, načrtovanje in izgradnjo nadzemnih električnih vodov za nazivne izmenične napetosti nad 1 kV, ki delujejo pri frekvenci 50 Hz.
Ta 2-24. del se ne uporablja za obstoječe nadzemne električne vode, razen če tega izrecno ne zahteva projektna specifikacija. Električne inštalacije nadzemnih vodov na različnih stopnjah projektiranja oziroma izgradnje je mogoče dokončati v skladu s standardi, ki so v veljavi ob začetku projekta.
Uporaba tega standarda za posebne zahteve v zvezi z modernizacijo ter povečevanjem varnostne in transportne zmogljivosti obstoječih nadzemnih vodov mora biti s sklicem opredeljena v projektni specifikaciji. Obenem je treba v projektni specifikaciji vzpostaviti korelacijo med ustreznimi predpisi in povezanimi standardi.
Podaljšek obstoječega električnega voda se obravnava kot nov nadzemni vod, razen stičišč, ki jih je treba podrobneje opredeliti v projektni specifikaciji.
1.2 Področje uporabe
1.2 RO.1 Nadzemni električni vodi z izoliranimi vodniki
(NCPT) 2-24. del tega standarda se uporablja za projektiranje in izgradnjo nadzemnih električnih vodov z izoliranimi vodniki, pri čemer so notranje in zunanje razdalje lahko krajše od razdalj, navedenih v 1. delu standarda (SR EN 50341-1:2013).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2019
Nadzemni električni vodi za izmenične napetosti nad 1 kV - 2-24. del: Nacionalna
normativna določila (NNA) za Romunijo (na podlagi EN 50341-1:2012)
Overhead electrical lines exceeding AC 1 kV - Part 2-24: National Normative Aspects
(NNA) for Romania (based on EN 50341-1:2012)
Lignes électriques aériennes dépassant 1 kV en courant alternatif - Partie 1: Exigences
générales - Spécifications communes
Ta slovenski standard je istoveten z: EN 50341-2-24:2019
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 50341-2-24
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2019
ICS 29.240.20
English Version
Overhead electrical lines exceeding AC 1 kV - Part 2-24:
National Normative Aspects (NNA) for Romania (based on EN
50341-1:2012)
This European Standard was approved by CENELEC on 2018-11-22.
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: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50341-2-24:2019 E
Contents
Page
Foreword . 4
0 Introduction. 5
0.7 Language . 5
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 . 11
2.3 Symbols . 18
3 Basis of design . 20
3.2 Requirements of overhead lines . 20
3.2.1 Basic requirements . 20
3.2.2 Reliability requirements . 20
3.2.5 Strength coordination . 20
3.2.6 Additional considerations . 21
4 Actions on lines . 21
4.1 Introduction . 21
4.3 Wind loads . 21
4.4 Wind forces on overhead line components . 23
4.4.1 Wind forces on conductors . 23
4.4.3 Wind forces on lattice towers . 23
4.4.3.2 Method 1 . 23
4.5 Ice loads . 24
4.5.1 General . 24
4.5.2 Ice forces on conductors . 24
4.6 Combined wind and ice loads . 24
4.6.1 Combined probabilities . 24
4.6.4 Equivalent diameter D of ice covered conductor . 27
4.6.5 Wind forces on support for ice covered conductors. 27
4.6.6 Combination of wind velocities and ice loads . 28
4.9 Safety loads . 30
4.9.1 Construction and maintenance loads . 30
4.9.2 Loads related to the weight of linesmen . 30
4.10 Forces due to short-circuit currents . 30
4.11 Other special forces . 30
4.12 Load cases . 32
4.12.1 General . 32
4.12.2 Standard load cases . 33
5 Electrical requirements . 38
5.2 Currents . 38
5.2.1 Normal current . 38
5.2.2 Short-circuit current . 38
5.7 Coordination of conductor positions and electrical stresses . 39
5.8 Internal clearances within the span and at the top of support . 39
5.9 External clearances . 42
5.9.1 General . 42
6 Earthing systems . 44
6.1.3 Earthing measures against lightning effects . 45
7 Supports . 47
7.1 Initial design considerations . 47
7.2 Materials . 47
7.3 Lattice steel towers . 47
7.3.1 General . 47
Romania 3/61 EN 50341-2-24:2019
7.3.5 Structural analysis . 47
7.3.6 Ultimate limit states . 49
7.3.6.1 General . 49
7.3.6.3 Tension, bending and compression resistance of members . 49
7.3.8 Resistance of connections . 49
7.4 Steel poles . 50
7.4.1 General . 50
7.4.6.2 Resistance of cross section areas . 50
7.9 Corrosion protection and finishes . 51
7.10 Maintenance facilities . 51
7.10.2 Maintainability . 51
7.10.3 Safety requirements . 51
8 Foundations . 51
8.2 Basis of geotechnical design . 51
8.2.1 General . 51
8.6 Intercations between support foundations and soil . 52
9 Conductors and earth-wires. 52
9.1 Introduction . 52
9.2 Aluminium based conductors . 52
9.2.1 Characteristics and dimensions . 52
9.2.3 Conductor service temperatures and grease characteristics . 52
9.3 Steel based conductors . 53
9.3.1 Characteristics and dimensions . 53
9.3.5 Corrosion protection . 53
9.6 General requirements . 53
9.6.1 Avoidance of damage . 53
9.6.2 Partial factor for conductors . 53
9.6.4 Sag - tension calculations . 54
10 Insulators . 56
10.2 Standard electrical requirements . 56
10.4 Pollution performance requirements . 58
10.5 Power arc requirements . 58
10.6 Audible noise requirements . 58
10.7 Mechanical requirements . 58
10.16 Selection, delivery and installation of insulators . 59
11 Hardware . 60
11.4 Magnetic characteristics . 60
11.6 Mechanical requirements . 60
12 Quality assurance, checks and taking-over . 61
European foreword
1. The Romanian National Committee (NC) is identified by the following address:
Romanian Standards Association (ASRO)
21-25, Mendeleev Street, 010362,
Bucharest, Romania
Tel: + 40 213 101 730
Fax: + 40 213 160 870
email: asro@asro.ro
www.asro.ro
Name of the relevant technical body: Romanian Technical Committee no 165 “Overhead
electrical lines” (ASRO/CT 165 - Linii electrice aeriene);
Attention: Secretary of ASRO/CT 165 – Standardisation Division
2. The Romanian NC has prepared the present EN 50341-2-24 (Part-2-24), listing the Romanian
National Normative Aspects under its sole responsibility and duly passed this document through
the CENELEC and CLC/TC 11 procedures.
NOTE The Romanian NC takes full responsibility for the satisfactory technically correct
co-coordination of the present EN 50341-2-24 with EN 50341-1:2012. Any quality control/assurance checks
necessary have been performed. However, it should be noted that such quality control/assurance has been
performed under the general responsibility of the Romanian NC pursuant to national laws and regulations.
3. Part-2-24 is normative in Romania and informative for the other countries.
4. Part-2-24 shall be read in conjunction with EN 50341-1:2012 (Part 1). All clause numbers used
in the present Part-2-24 correspond to the numbering in Part 1. Specific sub-clauses that are
prefixed ”RO” shall be read as amendments to the relevant text in Part 1. All requests for
clarification relating to the application of Part-2-24 in relation to Part 1 shall be sent to the
Romanian NC who will, in co-operation with CLC/TC 11, clarify the requirements.
Where no reference is made in this Part-2-24 to a specific sub-clause, then Part 1 shall apply.
5. For the "boxed values" defined in Part 1, any amended values, which are defined in Part-2-24,
shall be taken into consideration in Romania. However, any boxed value, whether in Part 1 or in
Part-2-24, shall not be amended in the direction of greater risk in a Project Specification.
6. The Romanian regulations and standards relating to the overhead electrical lines exceeding
A.C. 1 kV, which are specifically used in the present Part 2-24, are listed in the sub-clauses
2.1/RO.2.1.1 to 2.1/RO.2.1.4.
NOTE All national standards referred to in the present Part-2-24 will be replaced by the related European
Standards as they become available and are declared applicable by the Romanian NC and therefore
reported to the secretariat of CLC/TC 11.
Romania 5/61 EN 50341-2-24:2019
0 Introduction
0.7 Language
(ncpt) RO.1 Language
This standard is published in English and Romanian languages.
1 Scope
1.1 General
1.1 RO.1 General
(ncpt) This Part 2-24 gives the requirements for planning, design and construction of overhead electrical
lines with nominal voltages exceeding A.C. 1 kV operating at 50 Hz frequency.
The present Part 2-24 is not applicable for existing overhead electrical lines unless specifically
required by Project Specification. The power installations of overhead lines, that are in different
stages of design or construction, can be finalised in conformity with the standards in force at
project beginning.
For the application of this standard for specific requirements relaring to modernization, increasing
safety and transport capacity of existing overhead lines, reference shall be specified in the Project
Specification. At the same time, the correlation between relevant regulations and associated
standards shall be established in the Project Specifications.
The extension of existing electrical lines is considered as new overhead lines, except the junction
points that shall be detailed in the Project Specifications.
1.2 Field of application
1.2 RO.1 Overhead electrical lines with insulated conductors
(ncpt) This Part 2-24 is applicable for the design and construction of overhead electrical lines with
insulated conductors where the internal and external clearances can be smaller than those
specified in Part 1 (SR EN 50341-1:2013).
2 Normative references, definitions and symbols
2.1 Normative references
2.1 RO.1 Application of normative references in Part 1
(A-dev) The normative references in Part 1 (SR EN 50341-1:2013) are applicable, unless otherwise
specified in this Part 2-24. In Romania, for purpose of Part 2-24, the Eurocodes series given in
sub-clause 2.1 of Part 1, that are adopted as national standards, shall mandatory apply.
2.1 RO.2 References to Romanian national laws, regulations and standards
(A-dev) The following national acts and normative documents contain provisions for planning, design,
construction and mounting of the overhead electrical lines. These national acts and normative
documents (technical regulations, standards and codes of practice) are referred to in the text in
such way that some or all their content constitute requirements of this Part 2-24 and are
indispensable for its application. At the time of publication, the editions indicated were valid.
Having in view that all normative documents are subject to revision, the parties to agreements
based on this standard shall investigate the possibility of using the latest edition of referenced
documents.
2.1 RO. 2.1.1 National laws and regulations
(A-dev) The following normative acts are national laws and regulations.
Reference Title
Low No. 107:1996 The low of waters (with subsequent modifications and additions); Legea
apelor (cu modificările şi completările ulterioare)
Law No. 123/2012 Law on Electricity and Natural Gases (with subsequent modifications and
additions); Legea energiei electrice și a gazelor naturale (cu modificările
şi completările ulterioare)
Low No. 137:1995 The low of environment protection (with subsequent modifications and
additions); Legea protecției mediului (cu modificările şi completările
ulterioare)
Ordinance Ordinance concerning legal status of roads; Ordonanța privind regimul
No. 43/1997 juridic al drumurilor
Ordinance Government Emergency Ordinance on Environmental Protection,
No. 195/2005 (approved with amendments and completions by Law no. 265/2006, as
subsequently amended and supplemented); Ordonanţa de urgenţă a
Guvernului privind protecţia mediului (aprobată cu modificări şi completări
prin Legea nr. 265/2006, cu modificările şi completările ulterioare)
Decree for the establishment of normatives concerning systematization,
Decree No. 237/1978
location, construction, and repairing work of the overhead electrical lines
Decret pentru
passing through forests and over agricultural lands;
stabilirea normativelor privind sistematizarea, amplasarea, construirea,
repararea liniilor electrice care trec prin păduri și terenuri agricole
ANRE
National Energy Regulatory Authority (ANRE) - Order no. 49/2007 for
Order No. 49/2007
amending and completing the Technical Norm regarding the delimitation
of the protection and safety areas related to the energy capacities -
approved by the Order of the President of the National Energy Regulatory
Authority no. 4/2007; Ordinul nr. 49/2007 pentru modificarea și
completarea Normei tehnice privind delimitarea zonelor de protecție și de
siguranță aferente capacităților energetice - aprobată prin Ordinul
președintelui Autorității Naționale de Reglementare în Domeniul Energiei
nr. 4/2007
Order No. 135/2010 Ministry of Environment and Forests – Order concerning the Approval of
methodology for the implementation of environmental impact assessment
for public and private projects; Ministerul Mediului și Pădurilor – Ordin
privind Aprobarea metodologiei de aplicare a evaluării impactului asupra
mediului pentru proiecte publice şi private
M.A.P.M. Ministry of Waters and Forests - Order concerning the Approval of the
Order No. 860/2002 Environmental Impact Assessment Procedure and Environmental
Agreement; Ministerul Apelor și Pădurilor - Ordin privind Aprobarea
Procedurii de evaluare a impactului asupra mediului și de emitere a
acordului de mediu
M.A.P.M. Ministry of Waters and Forests - Order concerning the Approval of
Order. No. 863/2002 methodological guides applicable to the stages of the environmental
impact assessment framework-procedure; Ministerul Apelor și
Pădurilor - Ordin privind Aprobarea ghidurilor metodologice aplicabile
etapelor procedurii-cadru de evaluare a impactului asupra mediului
Romania 7/61 EN 50341-2-24:2019
2.1 RO.2.1.2 Technical regulations
(A-dev) The following normative documents are national technical regulations.
Reference Title
NTE 001/03/00 Insulation selection, insulation coordination and protection of electrical power
installations against lightning overvoltages; Normativ privind alegerea izolației,
coordonarea izolației și protecția instalațiilor electroenergetice împotriva
supratensiunilor
NTE 003/04/00 Normative for construction of overhead transmission lines with nominal voltages
exceeding 1000 V (NTE 003/04/00 is under revision); Normativ pentru construcția
liniilor aeriene de energie electrică cu tensiuni peste 1000 V (NTE 003/04/00 este
în curs de revizuire);
NTE 007/08/00 Design and execution of electric cable networks; Normativ pentru proiectarea și
executarea rețelelor de cabluri electrice
PE 022/87 General requirements for design of electrical grids; Prescriptii generale de
proiectare a rețelelor electrice
PE 101/85 Normative for construction of electrical installations of connexions and
transformers with voltages exceeding 1 kV; Normativ pentru construcția
instalațiilor electrice de conexiuni și transformare cu tensiuni peste 1 kV
PE 101A/85 Guidelines for setting the clearances concerning the coexistences of the electric
power installations with nominal voltages exceeding 1 kV with other
constructions; Instrucțiuni privind stabilirea distanțelor normate privind
amplasarea instalațiilor energetice cu tensiunea peste 1 kV în raport cu alte
construcții
PE 103/92 Design and checking for electric power installations at mechanical and thermal
stresses in conditions of short circuit currents; Instrucțiuni pentru dimensionarea și
verificarea instalațiilor electroenergetice la solicitări mecanice și termice, în
condițiile curenților de scurtcircuit
PE 116/94 Normative for tests and measurements performed on electrical installations and
equipments. Normativ de încercări și măsurări la echipamente și instalații
electrice
PE 125/89 Guidelines concerning coexistence coordination of the electrical installations
of 1 ÷ 750 kV and telecommunication lines; Instrucțiuni privind coordonarea
coexistenței instalațiilor electrice de 1÷750 kV cu liniile de telecomunicații
PE 127/83 Rules on technical exploitation of overhead electrical lines; Regulament de
exploatare tehnică a liniilor electrice aeriene
ID17 Normative concerning the design, execution, checking and commissioning of
electrical installations in the areas with explosion hazard (Petro- and Chemistry
Industry Minister); Normativ pentru proiectarea, execuția, verificarea și
recepționarea de instalații electrice în zone cu pericol de explozie (Ministerul
Industriei Chimiei și Petrochimiei)
C 170/2007 Normative concerning corrosion protection of elements from reinforced concrete
and prestressed concrete located in aggressive atmospheric environments;
Normativ privind protecția anticorozivă a elementelor din beton armat și beton
precomprimat situate în medii agresive atmosferic
M 34/80 Technical norms concerning the safety areas of aeronautic lands, developed by
Civil Aviation Department; Norme tehnice privind zonele de siguranță ale
terenurilor de aeronautică, elaborate de Departamentul Aviației Civile
2.1 RO.2.1.3 Codes of practice
(ncpt) The following documents are recommended to be used as codes of practice for design and
construction of overhead electrical lines.
Reference Title
I.LI-Ip4/17-2012 Design and execution of medium voltage overhead lines equipped with twisted
pair cables, hanging wire included or self support; Îndrumar de proiectare și
execuție pentru linii electrice aeriene de medie tensiune cu cabluri torsadate cu
sau fără fir purtător
1.LI- Ip 28–1994 Design concerning the coexistence conditions of overhead electrical lines with
telecommunications networks; Îndreptar de proiectare privind condițiile de
coexistență a liniilor de energie electrică cu liniile de telecomunicații
1RE-Ip30-2004 Design and execution of earthing systems; Îndreptar de proiectare și execuție a
instalațiilor de legare la pământ
1E Ip 35/1-2004 Design of medium voltage networks with earthed neutral through the resistance;
Îndreptar de proiectare pentru rețele de medie tensiune cu neutru legat la pământ
prin rezistență
1LI-Ip38 Design of high voltage overhead lines – Proximities and crossings of high
voltage overhead lines of 110÷400 kV to the other installations; Îndreptar pentru
proiectarea liniilor electrice de înaltă tensiune - Apropieri și traversari ale liniilor
electrice de înaltă tensiune de 110÷400 kV față de alte instalații
1.E-Ip 38 /1989 Use of land surfaces required for thermal power plants, electrical grids and district
heating grids; Îndreptar pentru folosirea suprafețelor de teren necesare pentru
termocentrale, rețele electrice și rețele de termoficare
1.E-Ip 69-1991 Selection of optimal solutions of warning systems of towers and conductors of
overhead electrical lines; Îndreptar pentru alegerea soluțiilor optime de balizare a
stâlpilor și conductoarelor liniilor electrice aeriene
1.LI-Ip 33-1983 Design and construction of overhead electrical lines with nominal voltage of
110 kV, 220 kV and 400 kV in the areas with strong meteorological phenomena;
Instrucțiuni de proiectare și construcții pentru linii electrice aeriene de 110 kV,
220 kV și 400 kV în zone cu fenomene meteorologice intense
3RE-Ip41-1992 Design and operation concerning the protection against influences determinated
by the proximities between overhead electrical lines; Instrucțiuni de proiectare și
exploatare privind protecția împotriva influențelor datorate apropierilor dintre liniile
electrice aeriene
Romania 9/61 EN 50341-2-24:2019
2.1 RO.2.1.4 Romanian standards
(ncpt) The following normative documents are Romanian standards and European/international
standards adopted as national standards.
Reference Title
SR 438-1:2012 Steel products for concrete reinforcement - Part 1: Hot rolled structural steel.
Grades and quality technical requirements;
Produse de oţel pentru armarea betonului - Partea 1: Oţel beton laminat la
cald. Mărci şi condiţii tehnice de calitate
SR 438-2:2012 Steel products for concrete reinforcement - Part 2: Cold drawn round wire;
Produse de oţel pentru armarea betonului - Partea 2: Sârmă rotundă trefilată
SR 438-3:2012 Steel products for reinforcement of concrete - Part 3: Welded fabric;
Produse de oţel pentru armarea betonului - Partea 3: Plase sudate
SR 832:2008 Influences of electrical installations of high voltage on the communication
networks - Prescriptions; Influenţe ale instalaţiilor electrice de înaltă tensiune
asupra liniilor de telecomunicaţii - Prescripţii
SR 2970:2005 Precast columns of reinforced and prestressed concrete for overhead electrical
lines - General technical requirements for quality; Stâlpi prefabricaţi din beton
armat şi beton precomprimat pentru linii electrice aeriene - Condiţii tehnice
generale de calitate
SR 6290:2004 Crossings between overhead transmission lines and telecommunication lines;
Încrucişări între liniile de energie electrică şi liniile de telecomunicaţii
SR EN 50182 Conductors for overhead lines - Round wire concentric lay stranded conductors;
Conductoare pentru linii aeriene - Conductoare cu sârme rotunde cablate în
straturi concentrice
SR EN 50183 Conductors for overhead lines - Aluminium-magnesium-silicon alloy wires;
Conductoare pentru linii electrice aeriene - Sârme de aliaj de aluminiu-
magneziu-siliciu
SR EN 50522:2011 Earthing of power installations exceeding 1 kV a.c.; Legarea la pământ a
instalaţiilor electrice cu tensiuni alternative mai mari de 1 kV
SR EN 50326:2004 Conductors for overhead lines - Characteristics of greases;
Conductoare pentru linii aeriene - Caracteristici ale produselor de protecţie
SR EN 60038:2012 CENELEC standard voltages; Tensiuni standardizate de CENELEC
SR IEC 60479 series Effects of current on human body beings and livestock;
Efectele curentului electric asupra omului şi animalelor domestice
SR EN 60889:2002 Hard-drawn aluminium wire for overhead line conductors;
Sârmă de aluminiu trasă la rece în stare de ecruisare tare pentru
conductoarele liniilor aeriene
SR EN 61232:2002 Aluminium-clad steel wires for electrical purposes;
Sârme de oţel acoperite cu aluminiu pentru utilizare electrică
SR EN 61284:2000 Overhead lines - Requirements and tests for fittings;
Linii electrice aeriene - Prescripţii şi încercări pentru accesorii
SR EN 61140 Protection against electric shock - Common aspects for installation and
equipment; Protecţie împotriva şocurilor electrice - Aspecte comune în
instalaţii şi echipamente electrice
SR EN 60071-1 Insulation co-ordination - Part 1: Definitions, principles and rules;
Coordonarea izolaţiei - Partea 1: Definiţii, principii şi reguli
SR EN 61936-1:2011 Power installations exceeding 1 kV a.c. - Part 1: Common rules;
Instalaţii electrice cu tensiuni alternative nominale mai mari de 1 kV -
Partea 1: Reguli comune
SR EN 62004:2010 Thermal resistant aluminium alloy wire for overhead line conductor;
Sârme de aliaj de aluminiu rezistente la căldură pentru conductoarele liniilor
electrice aeriene
SR EN 62209-1:2017 Measurement procedure for the assessment of specific absorption rate of
human exposure to radio frequency fields from hand-held and
body-mounted wireless communication devices - Part 1: Devices used next
to the ear (Frequency range of 300 MHz to 6 GHz); Procedură de măsurare
pentru evaluarea ratei de absorbţie specifice pentru expunerea umană la
câmpuri de radiofrecvenţă produse de dispozitive de comunicaţie fără fir,
ţinute în mână sau purtate în apropierea corpului. Partea 1: Dispozitive
utilizate în apropierea urechii (Domeniu frecvenţă de la 300 MHz la 6 GHz)
SR EN ISO 898 series Mechanical properties of fasteners made of carbon steel and alloy steel;
Caracteristici mecanice ale elementelor de asamblare executate din oţel
carbon şi oţel aliat
SR EN ISO 1461:2009 Hot dip galvanized coatings on fabricated iron and steel articles -
Specifications and test methods; Acoperiri termice de zinc pe piese fabricate
din fontă şi oţel - Specificaţii şi metode de încercare
SR HD 60364 series Low-voltage electrical instalations; Instalaţii electrice de joasă tensiune
SR IEC 60888 Zinc-coated steel wires for stranded conductors; Sârme de oţel zincate
pentru conductoare cablate
SR ISO 3864-1:2016 Graphic symbols - Security signs and colours - Part 1: Design principles for
safety signs and safety marks; Simboluri grafice - Culori şi semne de
securitat - Partea 1: Principii de proiectare pentru semne de securitate şi
marcaje de securitate
STAS 4068/1-82 Maximum water discharges and storage - Determination of maximum water
discharges and storage of watercourses; Debite şi volume maxime de apă -
Determinarea debitelor şi volumelor maxime ale cursurilor de apă
STAS 4068/2-87 Maximum water discharges and storages - Yearly probabilities of maximum
water discharges and storages under normal and special working conditions:
Debite şi volume maxime de apă. Probabilităţile anuale ale debitelor şi
volumelor maxime în condiţii normale şi speciale de exploatare
STAS 4273-83 Water constructional works - Integrating with importance classes;
Construcţii hidrotehnice - Încadrarea în clase de importanţă
STAS 6482/1-73 Steel wires and wire products for prestressed concrete - Rules for
quality control; Sârme de oţel şi produse din sârmă pentru beton
precomprimat - Reguli pentru verificarea calităţii
STAS 6482/2-80 Steel wires and wire products for prestressed concrete - Steel wire;
Sârme de oţel şi produse din sârmă pentru beton precomprimat -
Sârmă netedă
Romania 11/61 EN 50341-2-24:2019
STAS 6482/3-80 Steel wires and wire products for prestressed concrete - Deformed wire;
Sârme de oţel şi produse din sârmă pentru beton precomprimat - Sârmă
ampentată
STAS 6482/4-80 Steel wires and wire products for prestressed concrete - Strands;
Sârme de oţel şi produse din sârmă pentru beton precomprimat -Toroane
STAS 8074-76 Crossings between the contact wires of tramways and trolleybuses and the
overhead electrical lines or overhead telecommunication lines -
Requirements; Încrucişări între liniile de contact pentru tramvaie şi troleibuze
şi linii electrice aeriene sau linii aeriene de telecomunicaţii - Prescripţii
STAS 10128-86 Protection against corrosion of above ground steel buildings -
Classification of aggressive environments; Protecţia contra coroziunii a
construcţiilor supraterane din oţel - Clasificarea mediilor agresive
STAS 10166/1-77 Protection against corrosion of above ground steel buildings - Mechanical
preparation of surfaces; Protecţia contra coroziunii a construcţiilor din oţel
supraterane - Pregătirea mecanică a suprafeţelor
STAS 10702/1-83 Protection against corrosion of above ground steel buildings - Protection
coatings - General technical requirements; Protecţia contra coroziunii a
construcţiilor din oţel supraterane - Acoperiri protectoare - Condiţii tehnice
generale
2.2 Definitions
For purpose of this standard, in addition to the terms and definitions given in Part 1 (SR EN 50341-1),
the following terms and definitions apply.
2.2 RO.1
(ncpt)
overhead electrical line
overhead line (in a broad sense; OHL)
ensemble of electrical installations mounted in open air above ground, which serves for
transmission and distribution of electrical energy, being composed by conductors, insulators
(including fittings and clamps), earthing systems and structural elements (foundations and
supports, either towers or poles)
Note 1 to entry: From constructive point of view, the overhead electrical lines can be: single circuit lines,
double circuit lines or multiple circuit lines.
[IEV 60050-601, definition 601-03-04 modified]
2.2 RO.1.1
(ncpt)
line section
portion of an overhead electrical line composed by one or more spans in which the line
maintains its direction (see Figure 2/RO1)
2.2 RO.1.2
(ncpt)
section
line portion composed by one or more spans situated between two consecutive tension
supports (see Figure 2/RO1)
[IEV 60050-466, definition 466-03-11 modified]
Key
Portions of an overhead electrical line situated between the supports 1 and 3 or 3 and 9 are straight lines
- ;
- The supports 1, 3, 6 and 9 may be the angle tension supports or angle suspension supports;
- Portions of an overhead electrical line situated between two angle supports are line sections;
- L – nominal span;
e
- – real spans
Li (i=1…n) ;
- – wind span
Lv ;
- – weight span
Lw ;
- – virtual span
Lh ;
- hi (i=1…n) – difference in levels;
- f – conductor sag corresponding to nominal span;
n
- – height of conductor’s attachment;
hcl
- – minimum ground clearance
hg ;
- – angle between two adjacent straight lines.
2α
Figure 2/RO.1 – Graphical explanation for the concept of line section,
span and difference in levels
Romania 13/61 EN 50341-2-24:2019
2.2 RO.1.3
(ncpt)
approval of emplacement (line route)
written replay given by the grid operator at request of an applicant, which specifies its
position on the proposed location of solicited line route
2.2 RO.1.4
(ncpt) right of way for overhead electrical line
land area situated along the overhead electrical line and airspace above it, which imposes
restrictions in terms of overhead line coexistence with natural elements, objects, buildings
and their related facilities; the right of way includes the protection area and safety area
2.2 RO.1.5
(ncpt)
maintenance corridor of overhead electrical line
land strip non-arranged along the line route situated between the existing permanent access
roads into the area, allowing pedestrian access of operating personnel
2.2 RO.1.6
(ncpt) electrical
working corridor of overhead line
land strip, which can be temporary occupied, located close to the overhead electrical line
axis, and usually between the assembly platforms required for installation of conductors,
the access of machinery and transport of mounting materials
2.2 RO.1.7
(ncpt)
crossing and under-crossing
those crossings where the line over-cross or under-cross an object
2.2 RO.1.8
(ncpt)
crossing of overhead electrical line with an object
that situation where, on horizontal projection, at least one phase conductor, in normal or
deviated position, crosses an object
2.2 RO.1.9
(ncpt)
proximity of overhead line to an object
that situation of proximity when the overhead line doesn’t cross an object
2.2 RO.1.10
(ncpt)
difference in levels, h
i
distance vertically measured between the attachment points of conductor at two successive
supports (see Figure 2/RO.1)
[IEV 60050-466, definition 466-03-05 modified]
2.2 RO.1.11
(ncpt)
span, L
i
distance horizontally measured between the axes of two consecutive supports
(see Figure 2/RO.1)
[IEV 60050-466, definition 466-03-01 modified]
2.2 RO.2
(ncpt)
tower / pole
part of the support consisting of body, earthwire peak(s) and crossarms
Note 1 to entry: Constructions of metal, reinforced concrete, wood or other materials used to sustain the
components of overhead electrical lines above the ground.
[IEV 60050-466 modified by combination of definitions 466-08-01 and 466-07-01]
2.2 RO.2.1
(ncpt)
nominal span, L
e
conventional span at which the conductors’ attachment points are on the same horizontal
level; the terrain is flat; the minimum admissible ground clearance corresponds to the
maximum sag resulted as optimal value from technical-economic calculations. The rated span
corresponds to the normal (nominal) height of supports (see Figure 2/RO.1)
2.2 RO.2.2
(ncpt)
virtual span L of an inclined span
h
distance from the place where the horizontal from one of the attachment points of conductors
crosses the real curve of the conductor or its extension, as the considered point is inferior or
superior to the attachment point of conductor at the adjacent support (see Figure 2/RO.1)
2.2 RO.2.3
(ncpt)
wind span, L
v
half of the sum of real adjacent spans of a support, which influences the horizontal loads
acting on support due to wind pressure on conductors (see Figure 2/RO.1).
2.2 RO.2.4
(ncpt)
weight span, L
w
half of the sum of virtual adjacent spans of a support, which influences the vertical loads acting
on support due to weight of conductors (see Figure 2/RO.1)
2.2 RO.2.5
(ncpt)
spans for design of supports
wind spans L and weight spans L adopted for dimensioning of supports, bassed on all
v w
locations’ coverage criteria from the overhead line route, taking into consideration the
technical-economic criteria corresponding to the meteorological zones (for dimensioning of
normal supports, the design spans are commonly adopted):
Lv = (1,05 . 1,1) · Le and Lw = (1,4 . 1,6) · Le
RO.2.6
2.2
(ncpt)
span limited by distance between phases, L
f
real span between two consecutive towers where is realised a maximum allowable
conductor sag, by the minimum internal existing clearance between phase conductors or
between phase conductors and earthwires. Usually,
L = (1,2 . 1,3) · L
f e
2.2 RO.3
(ncpt)
foundation surface of support of an overhead electrical line
land surface determined by the geometric figure resulted from support foundation perimeter
above the ground, including anchors
2.2 RO.4
(ncpt) conductors of an overhead electrical line
metal wires strengths between their fixing points at supports (towers/poles or other special
structure
...
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