Siemens NXAIR M - Additional Key-Operated Interlock (Optional); Accessories; Operating Tools

12 NXAIR M 139-2021.9 / 07
Technical data
4 Technical data
4.1 Complete switchgear
Rated voltage
[kV]
24
Rated frequency
[Hz]
50/60
Rated power-frequency withstand voltage
[kV]
50/65
Rated lightning impulse withstand voltage
[kV]
125
Rated short-time withstand current, max.
[kA]
25
Rated duration of short circuit, max.
[s]
3
Rated peak withstand current
[kA]
63/65
Rated voltage
[kV]
24
Rated normal current of busbar, max.
[A]
2500
Rated normal current of feeders, max.
with circuit-beaker
[A]
2500
with disconnector
[A]
2500
as bus coupler
[A]
2500
as bus sectionalizer
[A]
2500
4.2 Basic prescriptions and standards
The indoor switchgear complies with the following prescriptions and standards:
IEC / EN standard
Switchgear
62271-1
62271-200
62271-210
Switching
devices
Circuit-breakers
62271-100
Disconnectors / earthing switches
62271-102
Circuit-breaker / fuse combinations
62271-107
Current limiting fuses
60282-1
Voltage detecting systems
61243-5
Insulation
60071-1
Degree of protection
60529
Instrument
transformers
Current transformers
61869-2
Voltage transformers
61869-3
Installation, erection
61936-1