up to 17.5 kV / 50 kA / 4000 A
up to 24 kV / 25 kA / 2500 A
Factory-assembled, type-tested switchgear according to IEC62271-200
Loss of service continuity category: LSC 2B
Partition class: PM
Internal arc classified switchgear according to IAC A FLR for 1s arc duration
Air as insulating medium is always available
Evidence of the making and breaking capacity for the circuit-breakers and the make-proof earthing switches inside the panel
Single busbar, Duplex-switchgear
Withdrawable vacuum circuit-breaker and vacuum contactor
Platform concept worldwide, local manufacturing presence
Use of standardized devices and of maintenance-free vacuum circuit-breakers or vacuum contactors
Type-test of earthing switch, vacuum circuit-breaker or vacuum contactor in the panel
Cable testing without isolating the busbar
All operations with high-voltage door closed
Unambiguous position indicators and control elements as standard on the high-voltage door
Maximum security of operation by self-explaining operating logic
Maintenance interval > 10 years
NXAIR Family - Ratings
NXAIR Family - Rated voltage
Rated short-circuit breaking current, max.
Rated short-duration power-frequency withstand voltage
Rated lightning impulse withstand voltage
Rated short-circuit making current, max.
Rated peak withstand current, max.
Rated normal current of busbar, max.
Rated normal current of feeders, max.
1) Gost-Standard: 32 kV for 7.2 kV / 42 kV for 12 kV resp. 65 kV for 24 kV2) values for 60 Hz
NXAIR - Dimensions
Width- contactor panel- CB panel (≤ 1000 A)- CB panel (≤ 1250 A)- CB panel (≤ 2500 A)
Depth- CB panel- contactor panel
Height- all panels
* till 12 kV only
A = Switching-device compartment
B = Busbar compartment
C = Connection compartment
D = Circuit-breaker
E = Low-voltage compartment