NES
The type-tested medium-voltage switchgear with withdrawable unit technology is used for primary distribution applications.
There are numerous cubicle variants, which can be used to provide the optimal solution for the requirements of customers in industry and energy supply companies.
Pressure relief channels, single or collective absorbers and deflector plates are used to discharge hot gases arising in the event of an internal arc.
Design features and classification in accordance with standard IEC 62271-200
| Busbar system | Single |
| Operational availability category | LSC 2B |
| Partition class | PM |
| Internal arc resistance classification | IAC AFLR |
|
Switchgear system |
12 kV |
|
|
Rated value |
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 |
40 |
kA |
|
Rated impulse current |
100 |
kA |
|
Rated short circuit period |
3 |
s |
|
Internal arc resistance |
AFLR 40 kA / 1 s |
