Siemens NXAirS User Manual

NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV
7
NXAirS description
7. Panel construction
6.5 Bus sectionalizer
A bus sectionalizer consists of 2 modules:
One circuit-breaker module panel and one disconnecting module used as bus riser panel.
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Busbar
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Withdrawable unit
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Disconnecting module
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Low-voltage plug connector with mechanical interlock between module and panel
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Busbar in the cable Connection compartment
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2 or 3 CT
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2 or 3 PT
Basic components
Option
Basic components
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Enclosure made of bended galvanized steel-sheet
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Door of the HV compartment is powder-coated with epoxy resin
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Individual, self-supporting, modular compartments in solid-wall design
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Compartments are bloted together
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The sheet between compartments can withstand pressure of arcing
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Each compartment relieves pressure upwards
1. Low-voltage plug connector
2. Drive and interlock unit of the circuit--Breaker
3. Vacuum interrupter
4. Fix and move contact
5. The operation mechanism of circuit-breaker and
earthing switchgear, and Interlock device
6. Making proof earthing switch
7. 4 cables per phase connecting
8. Current transformer
9. Contact box
10. Busbar
11. Pressure release channel
A. HV compartment
B. Busbar compartment
C. Connection compartment
D. Circuit--Breaker module compartment
E. Low- voltage compartment
Figure 2. cutaway view of the panel construction

Siemens NXAirS Specifications

General

Brand	Siemens
Model	NXAirS
Category	Switch
Language	English