NES-F

The type-tested compact medium-voltage switchgear in fixed-installation technology is ideal for numerous requirements in secondary distribution. Different cubicle types (circuit breakers, switch disconnectors, isolators, sensing fields etc.) can be combined into one switchgear as required.

Design features and classification under standard IEC 62271-200

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

Switchgear system

up to 12 kV

up to 24 kV

 

Rated values

max.

max.

 

Rated voltage

12

24

kV

Rated power-frequency withstand voltage

28

50

kV

Rated lightning impulse withstand voltage

75

125

kV

Rated busbar current

1,250

630

A

Rated short-time withstand current

31.5

31.5

kA

Rated impulse current

80

80

kA

Rated short circuit period

3

3

s

Internal arc resistance

AFLR 31,5 kA / 1 s

AFLR 31,5 kA / 1 s