Overhead electrical lines exceeding AC 45 kV - National Normative Aspects (NNA) for ESTONIA (based on EN 50341-1:2012)

Overhead electrical lines exceeding AC 45 kV - National Normative Aspects (NNA) for ESTONIA (based on EN 50341-1:2012)

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1   SCOPE

1.1   General

(NCPT) EE.1 Application to new lines
This Part 2-20 applies to all new overhead electric lines with nominal system voltages exceeding AC 1 kV and with rated frequencies below 100 Hz. This standard also applies to D.C. overhead lines in structural aspects.
(NCPT) EE.2 “New overhead line”
A “new overhead line” means a completely new line between two points, A and B. A new branch line of the existing power line should be considered as a new power line including the junction support, for which specific requirements should be defined in the Project Specification.