Instalaciones eléctricas de tensión nominal superior a 1 kV en corriente alterna.
Power installations exceeding 1 kV a.c.
Installations électriques de tensions nominales supérieures à 1 kV en courant alternatif
Buy on AENOR
29.240.20 / Power transmission and distribution lines
CTN 207/SC 99 - Electrical power installations in systems with nominal voltages above 1 kv a.c.
HD 637 S1:1999/corrigendum Jun. 2005 (Identical)
It is cancelled by: UNE-EN 50522:2012
It is cancelled by: UNE-EN 61936-1:2012
Corrects: UNE 207003:2000
