Siemens Nxairs-12kV Air/gas Insulated Medium Voltage Electrical/power Distribution Panels/switchgear

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Product details

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