SIEMENS NXAirS-12 kV Air Insulation Withdrawable Metal-clad medium-voltage Switchgear
1. Characteristics
· Mechanical dynamic position indicator
· The closing/opening status of disconnecting switch and grounding switch can be indicated respectively on mechanical dynamic position indicator.
· Operating handle socket and control elements are obviously set adjacent to closing/opening indicator of controlled switches.
· All the switch operations can be carried out when high-voltage compartment door closed.
· All the parts and components installation heights meet the requirements of human engineering.
· Options: Capacitive electric indicator can be used to detect feeder or power of busbar.
2. Electric Parameters
- Rated voltage |
kV |
7.2 |
12 |
|
- Rated frequency |
Hz |
50 |
50 |
|
- Rated short-time power frequency withstand voltage (interphase, to-ground) |
kV |
32 |
42 |
|
- Rated lightning impulse withstand voltage (interphase, to-ground) |
kV |
60 |
75 |
|
- Rated short-circuit breaking current |
MAX |
kA |
40* |
40* |
- Rated short-time withstand current, 4s |
MAX |
kA |
40* |
40* |
- Rated short-circuit closing current |
MAX |
kA |
100* |
100* |
- Rated peak withstand current |
MAX |
kA |
100* |
100* |
- Rated bus current |
MAX |
A |
4000 |
4000 |
- Feeder current1） |
A |
|||
Circuit breaker cabinet |
4000 |
4000 |
||
Contactor cabinet |
250 |
160 |
||
Disconnecting handcart cabinet |
4000 |
4000 |
||
Bus segment cabinet |
4000 |
4000 |
||
Bus lifting cabinet |
4000 |
4000 |
||
· *: It is applicable to switchgears outside of contactor cabinet.
3. Overall Dimensions
|
Width mm |
Circuit breaker cabinet |
|
≤630A |
650 |
|
1250A～2500A |
800 |
|
3150A～4000A |
1000 |
|
Disconnecting handcart cabinet |
||
≤2500A |
800 |
|
3150A～4000A |
1000 |
|
Transformer used in substation |
1000 |
|