NES-FD

The type-tested double busbar switchgear in fixed-installation technology is distinguished by its compact modular design and particular ease of maintenance. The switchgear is equipped with a pressure relief channel to discharge hot gases arising in the event of an internal arc.

Design features and classification under standard IEC 62271-200

Busbar system Double
Operational availability category LSC 2A
Internal arc resistance classification IAC AFLR

Switchgear system

12 kV

 

Rated values

max.

 

Rated voltage

12

kV

Rated power-frequency withstand voltage

28

kV

Rated lightning impulse withstand voltage

75

kV

Rated busbar current

2,500

A

Rated short-time withstand current

31.5

kA

Rated impulse current

80

kA

Rated short circuit period

3

s

Internal arc resistance

AFLR 31.5 kA / 1 s