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

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1   Scope

1.1   General

(ncpt) PL.1 Scope of application
This NNA applies to designing and constructing of new overhead lines with nominal system voltages exceeding 1 kV AC.
“New overhead line” means a totally new line between two points, A and B, built up with new components.
The standard PN‑EN 50341‑1 (Part 1) with this NNA does not apply to modernisation, reconstruction and renovation of the existing lines, unless otherwise specified in the Project Specification.