BS EN 50341-2-20:2018 Overhead electrical lines exceeding AC 1 kV. National Normative Aspects (NNA) for ESTONIA (based on EN 50341-1:2012)

BS EN 50341-2-20:2018

Overhead electrical lines exceeding AC 1 kV. National Normative Aspects (NNA) for ESTONIA (based on EN 50341-1:2012)

Status : Current   Published : January 2019



What is this standard about?

In Estonia the standard EN 50341-1 (Part 1) can only be applied using this NNA (EN 50341-2-20) containing National Normative Aspects for Estonia.

This Part 2-20 applies to all new overhead electric lines with nominal system voltages exceeding AC 1 kV and also for low voltage (below 1 kV AC) overhead lines performed by aerial cables. The requirements of the structural design are applicable also for DC overhead lines, where the electrical requirements are given in the Project Specification.

The standard includes requirements for the design and construction of overhead lines with nominal system voltages up to 45 kV AC equipped with covered conductors and aerial cables. Additionally, the requirements of the equipment standards and manufacturers’ instructions shall be followed.

The Standard EVS-EN 50341:2013 is applicable to fixing of structural elements for telecommunication (antennas, All Dielectric Self Supporting (ADSS) equipment, junction boxes, etc.), if mounted on power line supports (towers), especially regarding wind forces and ice loads on such fixed elements. The design and installation should be done under the due control of the line owner and/or the competent authority. Mounting of telecommunication equipment on power line supports must be coordinated with the line owner and stated in the Project Specification.

This standard applies to telecommunication lines only in the case of their common installation with power lines. This standard does not apply to separately installed telecommunication overhead lines.

The Standard EVS-EN 50341:2013 shall not be applied to maintenance, branch lines, extensions or diversions of existing overhead lines in Estonia, unless specifically required in the Project Specification.

Standard NumberBS EN 50341-2-20:2018
TitleOverhead electrical lines exceeding AC 1 kV. National Normative Aspects (NNA) for ESTONIA (based on EN 50341-1:2012)
Publication Date25 January 2019
Normative References(Required to achieve compliance to this standard)EVS 814:2003, EVS 843:2016, EVS-EN 1991-1-4/NA:2007, EVS 884:2017, EVS-EN 1991-1-4/A1:2010/NA:2010, EVS-EN 1993-3-1/NA:2009
Informative References(Provided for Information)No other standards are informatively referenced
ReplacesBS EN 50341-2-20:2015
International RelationshipsEN 50341-2-20:2018
DescriptorsLoading, Electric power transmission lines, High-voltage equipment, Overhead contact lines, Overhead power lines, Electric power systems, Overhead line conductors, Electric power transmission, Electrical equipment, Electric power distribution lines, Estonia, Alternating-current power transmission, Structural design, Electric cables, Power cables, Alternating current
ISBN978 0 539 03544 5
File Size1.093 MB

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