1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Overhead electrical lines exceeding AC 1 kVPart 2-13: National Normative Aspects (NNA) for ITALY (based on EN 50341-1:2012)BS EN 50341-2-13:2017+A1:2017National forewordThis British Standard is the UK implementation of
2、EN 50341-2-13:2017, including amendment A1:2017. It supersedes BS EN 50341-2-13:2017, which is withdrawn.The text of CENELEC amendment A1:2017 has been provided in its entirety at the beginning of this document. BSIs policy of providing consolidated content remains unchanged; however, in the interes
3、t of expediency, in this instance BSI have chosen to the collate the relevant content at the beginning of this document.This standard, together with the following list of National Normative Aspect standards, supersedes BS EN 50423-3:2005 and BS EN 50341-3:2001.Coun-try Code Origin Ref AT Austrian Na
4、tional Committee BS EN 50341-2-1BE Belgian National Committee BS EN 50341-2-2CH Swiss National Committee BS EN 50341-2-3DE German National Committee BS EN 50341-2-4:2016DK Danish National Committee BS EN 50341-2-5:2017ES Spanish National Committee BS EN 50341-2-6:2017FI Finnish National Committee BS
5、 EN 50341-2-7:2015FR French National Committee BS EN 50341-2-8:2017GB British National Committee BS EN 50341-2-9:2015GR Greek National Committee BS EN 50341-2-10IE Irish National Committee BS EN 50341-2-11IS Iceland National Committee BS EN 50341-2-12IT Italian National Committee BS EN 50341-2-13:20
6、17+A1:2017LU Luxemburg National Committee No NNA availableNL Nederlands National Committee BS EN 50341-2-15NO Norwegian National Committee BS EN 50341-2-16:2016 PT Portuguese National Committee BS EN 50341-2-17 SE Swedish National Committee BS EN 50341-2-18:2016 CZ Czech National Committee BS EN 503
7、41-2-19:2015 EE Estonian National Committee BS EN 50341-2-20:2015PL Polish National Committee BS EN 50341-2-22:2016 BRITISH STANDARDBS EN 50341-2-13:2017+A1:2017Coun-try Code Origin Ref SK Slovak National Committee BS EN 50341-2-23:2016 BS EN 50423-3:2005 and BS EN 50341-3:2001 will be withdrawn upo
8、n publication of the rest of the series.The UK participation in its preparation was entrusted to Technical Committee PEL/11, Overhead Lines.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary
9、 provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 51271 1ICS 29.240.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was pu
10、blished under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate Text affected31 March 2018 Implementation of CENELEC amendment A1:2017BRITISH STANDARD BS EN 50341-2-13:2017+A1:2017EUROPEAN STANDARD NORME EUROPENNE EUROPIS
11、CHE NORM EN 50341-2-13:2017/A1 June 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) This amendment A1 modifies the European Standard EN 50341-2-13:2017; it was approved by CENELEC on 201
12、7-05-17. 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,
13、 the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CEN
14、ELEC 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/A1:2017 E EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50341-2-13:2017/A1 June 2017 ICS 29.240.20
15、 English Version Overhead electrical lines exceeding AC 1 kV - Part 2-13: National Normative Aspects (NNA) for ITALY (based on EN 50341-1:2012) This amendment A1 modifies the European Standard EN 50341-2-13:2017; it was approved by CENELEC on 2017-05-17. CENELEC members are the national electrotechn
16、ical 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, S
17、erbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Bruss
18、els 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/A1:2017 E BS EN 50341-2-13:2017+A1:2017Italy - 2/9 - EN 50341-2-13:2017/A1:2017 Contents European foreword . 3 1 Modifications to 4.5.1 General 4 2 Modificatio
19、ns to 4.7 Temperature effects 5 3 Modifications to 4.8 Security loads . 5 4 Modifications to 4.12.2 Standard load cases . 6 5 Modifications to 5.8 Internal clearences within the span and at the top of the tower 6 6 Modifications to 8.2.2 Geotechnical design by calculation 9 7 Modifications to 9.6.2
20、Partial factor for conductors 9 BS EN 50341-2-13:2017+A1:2017Italy - 3/9 - EN 50341-2-13:2017/A1:2017 European foreword 1. The Italian National Committee (NC) is identified by the following address:Italian Electrotechnical National CommitteeVia Saccardo 920134 MilanoItalyPhone n. +39 02 21006.1Fax n
21、. +39 02 21006210Committee 11/7 Overhead electrical linesE-Mail ceiceinorme.it.2. The Italian NC has prepared this Part 2-13/A1 (EN 50341-2-13/A1) listing the Italian NationalNormative Aspects Amendment 1 (NNA/A1) under its sole responsibility and duly passedthis document through the CENELEC and CLC
22、/TC 11 procedures.NOTE: The Italian NC takes sole responsibility for the technically correct co-ordination of this EN50341-2-13/A1 with Part 2-13 (EN 50341-2-13:2017) and with Part 1 (EN 50341-1:2012). It hasperformed the necessary checks in the frame of quality assurance/control. However, it has be
23、ennoted that this quality control has been already made in the framework of the general responsibility ofa standards committee under the national laws/regulations.3. This NNA/A1 is normative in Italy and informative for other countries.4. This NNA/A1 shall be read in conjunction with Part 2-13 and P
24、art 1. All clause numbers usedin this NNA/A1 correspond to those of Part 2-13 and Part 1. Specific sub-clauses that areprefixed “IT” are to be read as amendments to the relevant text in Part 1 and Part2-13. Anynecessary clarification regarding the application of NNA/A1 in conjunction with Part 2-13
25、andPart 1, shall be referred to the Italian NC who will, in co-operation with CLC/TC 11, clarifythe explanations.Where no reference is made in this NNA/A1 to a specific sub-clause, then Part 1 shall apply.5. In case of “boxed values” defined in Part 1, in Italy amended values (if any), which aredefi
26、ned in this NNA/A1, shall be taken into account.However no “boxed value” either defined in Part 1 or in this NNA/A1, can be modified in thedirection of increased risk in the Project specifications.6. The Italian National standards/regulations related to overhead electrical lines exceeding1 kV AC are
27、 listed in subclause 2.1/IT.1 Part 1.NOTE: All national standards referred to in this NNA/A1 will be replaced by the relevant EuropeanStandards as soon as they become available and are declared by the Italian NC to be applicable andthus reported to the secretary of CLC/TC 11.BS EN 50341-2-13:2017+A1
28、:2017Italy - 4/9 - EN 50341-2-13:2017/A1:2017 1 Modifications to 4.5.1 General Replace: Load type 2 (snow) Regions: Valle dAosta, Piemonte, Liguria, Lombardia, Trentino Alto Adige, Emilia Romagna, Friuli Venezia Giulia, Veneto e Marche, Abruzzo, Molise, Toscana (with exclusion of the provinces of Li
29、vorno and Grosseto), Umbria, Lazio (with exclusion of the provinces of Viterbo, Roma and Latina), Campania (with exclusion of the provinces of Napoli and Caserta), Puglia (with exclusion of the provinces of Brindisi and Lecce), Basilicata, Calabria (with exclusion of the province of Reggio Calabria)
30、: Snow density i= 500 kg/m Sk =24 mm for as 600 m Sk =24 + 20 (as - 600)/1000 mm for as 600 m. Load type 3 (snow) Regions: Toscana (provinces of Livorno e Grosseto), Lazio (provinces of Viterbo, Roma and Latina); Campania (provinces of Napoli and Caserta), Puglia (provinces of Brindisi and Lecce), S
31、ardegna, Calabria (province of Reggio Calabria), Sicilia: Snow density i= 500 kg/m Sk = 0 mm for as 600 m Sk = 20 + 15 (as - 600) /1000 mm for as 600 m with: Load type 2 (snow) Regions: Valle dAosta, Piemonte, Liguria, Lombardia, Trentino Alto Adige, Emilia Romagna, Friuli Venezia Giulia, Veneto, Ma
32、rche, Abruzzo, Molise, Toscana (with exclusion of the provinces of Pisa, Livorno and Grosseto), Umbria, Lazio (with exclusion of the provinces of Viterbo, Roma and Latina), Campania (with exclusion of the provinces of Napoli and Caserta), Puglia (with exclusion of the provinces of Brindisi and Lecce
33、), Basilicata, Calabria (with exclusion of the provinces of Vibo Valentia and Reggio Calabria): Snow density i= 500 kg/m Sk =24 mm for as 600 m Sk =24 + 20 (as - 600)/1000 mm for as 600 m. Load type 3 (snow) Regions: Toscana (provinces of Pisa, Livorno and Grosseto), Lazio (provinces of Viterbo, Rom
34、a and Latina); Campania (provinces of Napoli and Caserta), Puglia (provinces of Brindisi and Lecce), Sardegna, Calabria (provinces of Vibo Valentia and Reggio Calabria), Sicilia: Snow density i= 500 kg/m Sk = 0 mm for as 600 m Sk = 20 + 15 (as - 600) /1000 mm for as 600 m BS EN 50341-2-13:2017+A1:20
35、17Italy - 5/9 - EN 50341-2-13:2017/A1:2017 2 Modifications to 4.7 Temperature effects Replace: (snc) IT.1 Temperature effects For the calculation of the tensile load on conductors and earth-wires, and of related forces transmitted to supports, as well as for geometrical verifications of height above
36、 ground for electrical clearances and insulating distances, the temperatures below reported shall apply: a) EDS temperature (Every Day Stress) is 15C: in this condition, in absence ofwind, the tensile load of conductors shall not be greater than 25% of thebreakage load.On the basis of specific proje
37、ct conditions, to limit wind vibration effects,special attention should be paid to laying conditions when the parametervalue (the ratio, between the horizontal tension and the mass per linearmeter of conductor = 2000 m) is exceeded. Criteria and conditions ofinstallation should be defined in project
38、 specifications.with: (snc) IT.1 Temperature effects For the calculation of the tensile load on conductors and earth-wires, and of related forces transmitted to supports, as well as for geometrical verifications of height above ground for electrical clearances and insulating distances, the temperatu
39、res below reported shall apply: a) EDS temperature (Every Day Stress) is 15C: in this condition, in absence ofwind, the tensile load of conductors shall not be greater than 25% of thebreaking load.On the basis of specific project conditions, to limit wind vibration effects,special attention should b
40、e paid to laying conditions when the catenaryconstant (the ratio, between the horizontal tension and the mass per linearmeter of conductor) exceeds a value of 2000 m. Criteria and conditions ofinstallation should be defined in project specifications.3 Modifications to 4.8 Security loads Replace: (nc
41、pt) IT.1 Breaking of conductors case For conductors supported by suspension insulator sets, the differential loads shall be calculated taking into consideration the swing of the string. For calculating the actions due to a broken conductor (single o in a bundle) on a support, the maximum tensile loa
42、d of the section inside which the supported is included can be used. with: (ncpt) IT.1 Breaking of conductors case For conductors supported by suspension insulator sets, the differential loads can be calculated taking into consideration the swing of the string. For calculating the actions due to a b
43、roken conductor (single o in a bundle) on a support, the maximum tensile load of the section inside which the supported is included can be used. BS EN 50341-2-13:2017+A1:2017Italy - 6/9 - EN 50341-2-13:2017/A1:2017 4 Modifications to 4.12.2 Standard load cases Replace: With reference to figures in s
44、ubclause 4.2.10.2 of EN 50341-1 4.2.10.2 for the determination of load cases 2b, 2c, 2d, the following reduction factors due to ice load IT apply: = 0,5 1 = 0,3 2 = 0,7 3 = 0,3 4 = 0,7 For longitudinal bending scheme, if necessary, and if so indicated in the project specifications, the case of 1 = 0
45、, 2 = 1 in absence of wind can also be considered; this load case represents the “slope” condition which should be applied only to supports placed at the peak of the hills/mountains and which separate line sections on opposite slopes. with: With reference to figures in subclause 4.12.2 of EN 50341-1
46、 for the determination of load cases 2b, 2c, 2d, the following reduction factors due to ice load IT apply: = 0,5 1 = 0,3 2 = 0,7 3 = 0,3 4 = 0,7 For longitudinal bending scheme, if necessary, and if so indicated in the project specifications, the case of 1 = 0, 2 = 1 in absence of wind can also be c
47、onsidered; this load case represents the “slope” condition which should be applied only to supports placed at the peak of the hills/mountains and which separate line sections on opposite slopes. 5 Modifications to 5.8 Internal clearences within the span and at the top of the tower Replace: (A-dev) I
48、T.1 Clearances calculations The clearances, in general, shall be calculated as follows. In the design of the towers, the following minimum air clearance shall be maintained: Table 5.8/IT.1 Minimum air clearances Minimum air clearances Unit Minimum distance between conductor within the span among poi
49、nts susceptible of approach: this spacing is reduced to Dpp in case of points not susceptible of approaching each others m ( )ppkDIfk +Minimum distance between conductor and earth-wire within the span m ( )elkDIfk +Minimum clearance between live metal parts and earthed metal parts with wind speed V = 7,5 m/s m elDk 1Minimum clearance between live metal parts and earthed metal parts of suspension towers with max swing (wind speed with return period of 3 years) m epHzD_50Where: BS EN 50341-2-13:2017+A1:2017
