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 |
|
