1、BRITISH STANDARDBS EN 50423-3:2005Overhead electrical lines exceeding AC 1 kV up to and including AC 45 kV Part 3: Set of National Normative AspectsICS 29.240.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g4
2、4g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Incorporating Corrigenda April 2005 , February 2009,June 2010 and October 2010National forewordThis British Standard is the UK implementation of EN 50423-3:2005, incorporating Corrigenda April 2005, February 2009, June 2010 and October 201
3、0. The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by CENELEC corrigendum February 2009 is indicated in the text by .The UK participation in its preparation was entrusted to Technical Committee PEL/11, Overhead lines.A list of organiza
4、tions represented on this committee can be obtained on request to its secretary.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 50423-3:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 15 December 200
5、5 BSI 2010Amendments/corrigenda issued since publicationAmd. No. Date Comments 15785 Corrigendum No. 131 March 2006Incorporation of Corrigendum April 2005 and correction of figures in GB National Normative Aspects30 June 2009 Implementation of CENELEC corrigendum February 200930 April2011Incorporati
6、on of CENELEC corrigendum June 2010 and October 2010, fully replacing National Normative Aspects for Finland and Italy.ISBN 978 0 580 71919 6EUROPEAN STANDARD EN 50423-3 NORME EUROPENNE EUROPISCHE NORM January 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Norm
7、alisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50423-3:2005 E ICS 29.240.20 English versi
8、on Overhead electrical lines exceeding AC 1 kV up to and including AC 45 kV Part 3: Set of National Normative Aspects Lignes lectriques ariennes dpassant 1 kV AC jusqu 45 kV AC Partie 3: Aspects Normatifs Nationaux Freileitungen ber AC 1 kV bis einschlielich AC 45 kV Teil 3: Nationale Normative Fest
9、legungenThis European Standard was approved by CENELEC on 2004-10-01. 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 bibliogr
10、aphical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in one official version (English). A version in any other language made by translation under the responsibility of a CENELEC member
11、into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
12、Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Incorporating Corrigenda April 2005, February 2009,June 2010 and October 2010 EN 50423-3:2005 2 Foreword The different parts of this European Standard were
13、prepared by the respective CENELEC National Committees in cooperation with the Technical Committee CENELEC TC 11, Overhead electrical lines exceeding 1 kV a.c. (1,5 kV d.c.). The texts of the drafts were submitted to the Unique Acceptance Procedure and were approved by CENELEC as EN 50423-3 on 2004-
14、10-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-10-01 _ T
15、ext of EN 50423-3 Please see the subparts specific to each National Committee. NOTE This Part 3 of EN 50423 is published by CENELEC in English only. N 50423-3:2005 BS EEN 50423-3:2005 - 3- Index of National Normative Aspects Reference Country Valid version in Code Name EN 50423-3-1 AT Austria EN 504
16、23-3:2005 modified by Corr. February 2009 EN 50423-3-2 BE Belgium EN 50423-3:2005 EN 50423-3-3 CH Switzerland EN 50423-3:2005 EN 50423-3-4 DE Germany EN 50423-3:2005 EN 50423-3-5 DK Denmark EN 50423-3:2005 EN 50423-3-6 ES Spain EN 50423-3:2005 EN 50423-3-7 FI Finland Replaced by Corr. Febuary 2009 E
17、N 50423-3-8 FR France EN 50423-3:2005 EN 50423-3-9 GB Great Britain and Northern Ireland EN 50423-3:2005 modified by Corr. April 2005 EN 50423-3-10 GR Greece EN 50423-3:2005 EN 50423-3-11 IE Ireland EN 50423-3:2005 EN 50423-3-12 IS Iceland EN 50423-3:2005 EN 50423-3-13 IT Italy EN 50423-3:2005 - LU
18、Luxembourg No NNA EN 50423-3-15 NL Netherlands EN 50423-3:2005 EN 50423-3-16 NO Norway Replaced by Corr. February 2009 EN 50423-3-17 PT Portugal EN 50423-3:2005 EN 50423-3-18 SE Sweden Replaced by Corr. February 2009 N 50423-3:2005 BS E- 4 - EN 50423-3:2005Reference Country Valid version in Code Nam
19、e EN 50423-3-19 CZ Czech Republic EN 50423-3:2005 EN 50423-3-20 EE Estonia Added by Corr. Februay 2009 EN 50423-2-21 SI Slovenia Added by Corr. Februay 2009 - PL Poland No NNA - MT Malta No NNA - HU Hungary No NNA - SK Slovakia No NNA - LT Lithuania No NNA N 50423-3:2005 BS ENational Normative Aspec
20、ts (NNA) for AUSTRIA based on EN 50423-1:2005 EN 50423-3-1:2005 - 2/48 - Austria Contents 1 General scope Field of application 4 2 Definitions, symbols and references 4 2.1 Definitions 4 2.3 References . 5 4 Actions on lines 6 4.3.2 Wind loads . 6 4.3.3 Ice loads . 6 4.3.6 Construction and maintenan
21、ce loads 7 4.3.10.4 Standard load cases 7 4.3.11 Partial factors for actions . 12 5 Electrical requirements . 13 5.4 Internal and external clearances . 13 5.4.2.1 General considerations and underlying principles . 13 5.4.3 Clearances within the span and at the tower . 17 5.4.4 Clearances to ground i
22、n areas remote from buildings, roads, railways and navigable waterways 18 5.4.5.2 Clearances to residential and other buildings . 19 5.4.5.3 Clearances to Line near roads, railways, navigable waterways . 21 5.4.5.4 Clearances to other power lines or overhead telecom. lines 29 5.4.5.5 Clearances to r
23、ecreational areas . 32 6 Earthing systems . 33 6.3 Construction of earthing systems 33 6.3.1 Installation of earthing electrodes . 33 8 Foundations . 33 8.2 General requirements . 33 8.5.2.1 Geotechnical design by calculation, General . 34 8.5.3 Geotechnical design by prescriptive measures 34 9 Cond
24、uctors and overhead earthwires (ground wires) with or without telecommunication circuits . 35 9.1 Introduction 35 9.5.6 Test requirements . 35 9.6 General requirements . 37 10 Insulators 37 10.1 General . 37 10.7 Mechanical requirements . 37 10.10 Characteristics and dimensions of insulators . 37 In
25、 addition to the given NNA, the following applies for Austria: . 38 TELECOMMUNICATION LINES CARRIED ON OVERHEAD TRANSMISSION LINES N50423-3-1:2005BS EAustria - 3/48 - EN 50423-3-1:2005 Foreword 1. The Austrian National Committee (NC) is identified by the following address: Austrian Electrotechnical
26、Committee sterreichischer Verband fr Elektrotechnik (OVE) Eschenbachgasse 9, A-1010 Vienna, Austria Phone no. +43.1.587.63.73 Fax no. +43.1.586.74.08 name/number of relevant subcommittee: Fach(normen)ausschuss L 2. The Austrian NC has prepared this Part 3-1 of EN 50423 listing the Austrian national
27、normative aspects, under its sole responsibility, and duly passed it through the CENELEC and CLC/TC 11 procedures. 3. This EN 50423-3-1 is normative in Austria and informative for other countries; 4. This EN 50423-3-1 has to be read in conjunction with EN 50423-1, hereinafter referred to as Part 1.
28、All clause numbers used in this Part 3-1 correspond to those of Part 1. Specific subclauses, which are prefixed AT“, are to be read as amendments to the relevant text in Part 1. Any necessary clarification regarding the application of Part 3-1 in conjunction with Part 1 shall be referred to the Aust
29、rian NC who will, in cooperation with CLC/TC 11 clarify the requirements. When no reference is made in Part 3-1 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 Part 3-1 shall be taken into account in Austri
30、a. However any boxed value, whether in Part 1 or Part 3-1, shall not be amended in the direction of greater risk in a Project Specification. 6. The Austrian NC declares in accordance with subclause 3.1 of Part 1 that this Part 3-1 follows the Empirical Approach“ (subclause 4.3), and that consequentl
31、y subclause 4.2 General Approach“ is not applicable for Austria. 7. The national Austrian standards/regulations related to overhead electrical lines exceeding 1 kV (A.C.) are identified/listed in 2.3. NOTE All national standards referred to in this Part 3-1 will be replaced by the relevant European
32、Standards as soon as they become available and are declared by the Austrian NC to be applicable and thus reported to the secretary of CLC/TC 11. N50423-3-1:2005BS EEN 50423-3-1:2005 - 4/48 - Austria Clause National regulation 1 General scope Field of application (A-dev) AT.1 Notes 1, 2 and 3 are nor
33、mative in Austria: NOTE 2 The construction of lines with covered conductors (KUF) and reduced internal or external clearance is permitted in Austria. NOTE 4 This NNA applies to overhead lines with nominal voltage exceeding AC 1kV up to and including AC 45 kV and a maximum operating voltage of 52 kV
34、according to VE EN 60071-1. Hereinafter the latter will be described as high voltage overhead lines, group I. 2 Definitions, symbols and references 2.1 Definitions (A-dev) AT.2.(1) a conductor crosses an object when, as a result of being deflected by wind blowing in the direction of that facility, t
35、he outline of the conductor intersects the outline of the object (A-dev) AT.2.(2) crossing span a span to which the conditions of AT.2.(1) apply (A-dev) AT.3 In addition to the definition in Part 1: Conductors are understood to mean bare, insulated, or sheathed wires and cables suspended between the
36、 supports of an overhead high-tension power transmission line regardless of whether they are energized or not. Included here are lines having multiple functions (composite cables for conductors and earthwires). OPCON and OPGW are to be considered as conductors. Covered conductors (KUF) are not shock
37、-proof, i.e. covered conductors being valid with regard to prodection of contact as bare conductors. For the minimum requirements of the design of covered conductors see VE/NORM E 8227 (A-dev) AT.11 line groups are defined as follows in Table 2.1/AT.11 Table 2.1/AT.11 - Line groups Line Group Nomina
38、l Insulation (series) Maximum Operating Voltage, Effective Value in kV Proof Alternating Voltage A (Alternating Voltage Holding Voltage) Effective Value in kV Normal Surge Level (Surge Holding Voltage) Peak Value in kV I till 45kV till 52 till 105 till 250 N50423-3-1:2005BS EAustria - 5/48 - EN 5042
39、3-3-1:2005 Clause National regulation (ncpt) AT.30 wooden poles pylon with a wooden tower body 2.3 References (A-dev) AT.21 VE-L 1, Construction of overhead power lines up to 1000V (A-dev) AT.22 NORM B 4007 Scarffoldind general use, construction und load (A-dev) AT.23 NORM B 4700 Reinforced concrete
40、 structures EUROCODE-orientated analysis, design and detailing (A-dev) AT.24 VE/NORM E 8227 Covered conductors (A-dev) AT.25 NORM E 4101 Electrical overhead-lines; Pin insulators type VHD und VHD-G (A-dev) AT.26 NORM E 4102 Electrical overhead-lines; solid core post insulators VKSt und VKS (A-dev) A
41、T.27 VE-EH 41 Earthing in alternating current systems with nominal voltages exceeding 1 kV (A-dev) AT.28 VE-L 5, Teil 1 Commissioning report for overhead lines (A-dev) AT.29 NORM ENV 1994-1-1 Eurocode 4: Design of composite steel and concrete structures Part 1-1: General rules and rules for building
42、s (A-dev) AT.30 NORM B 4710_1 Concrete Part 1: Specification, production, use and verification of conformity N 50423-3-1:2005BS EEN 50423-3-1:2005 - 6/48 - Austria Clause National regulation 4 Actions on lines 4.3.2 Wind loads (ncpt) AT.3 : Table 4.3.2/AT.3 Specific wind pressure acting upon the dir
43、ectly affected components Values relate to a wind velocity of 120 km/h and a thrust of 700 N/m2Component Specific aerodyn. drag coefficient CxCx . q120 N/m2 Reduction factor full flat surfaces 1,6 1112 1 flat lattice walls made of angle profiles 1,4 973 1 made of rods 1,1 765 1 Timber poles, steel p
44、oles, concrete poles of circular or near-circular shape 0,7 487 1 steel poles and concrete poles of hexagonal or octagonal shape 1,0 695 1 Double poles of in the pole-plane 0,7 487 1 Timber, steel resp. concrete rectangular to pole-plane where e 15,8 mm 1,0 521 0,75 Aircraft warning and radar sphere
45、 d N50423-3-1:2005BS EAustria - 7/48 - EN 50423-3-1:2005 Clause National regulation (snc) AT.3: For towers and equipment the following loading conditions apply: For Normal additional loads: (1) Conductor: Normal additional load (2) Insulator strings of glass or porcelain: minimum 20% of their self w
46、eight (for strings of composite insulators eventually higher percentages are to be considered.) (3) Tower body: no additional load (4) Crossarms made of steel profiles: minimum 40% of their self weight (5) Crossarms made of other materials: minimum 120 N/m2 acting on total surface 4.3.6 Construction
47、 and maintenance loads (ncpt) AT.1: Construction loads are to be assumed as perpendicularly acting single loads. They act on (1) crossarms which jut out more than 1,2 metres: at the crossarms end (2) horizontal bracing of crossarms: in the middle of the bracing (crossarms upper not horizontal bracin
48、gs need not to be assumed with construction loads) (3) all bracing and diagonals inclined at less than 30 degrees to the horizontal, in the centre of the diagonals. In areas with climbing facilities (e.g. ladder, steps) on supports: diagonals of these parts need not to be calculated for construction
49、 loads. (4) all horizontal bracings of tower bodies in the middle of the bracings (e.g. plan bracing, secondary bracing) At (1) and (2) loadings of normal conditions according to 4.3.10.4 are to be assumed additionally, but not in cases (3) and (4). For material stress the other regular loading conditions are to be assumed according to relevant regulations (NORM B 4605) Poles of wooden towers need not to be assumed with construction loads. 4
