Siemens NXAirS LP AC Medium Voltage Metal Enclosed Switchgear

a) Executive standard

IEC 62271-200 high voltage switchgear and controlgear - Part 200: metal enclosed alternating current switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

GB 3906 3.6kV ～ 40.5kV AC metal enclosed switchgear and control equipment

b) Technical parameters

Rated frequency: 50Hz

Rated voltage: 12KV

Rated current of main bus (a): 630 / 1250 / 1600 / 2000 / 2500 / 3150 / 4000

Rated short-circuit breaking current (KA): 25 / 31.5/40

Rated short-time withstand current of main circuit (Ka / 4S): 25 / 31.5/40

Rated short-time withstand current of grounding circuit (Ka / 2S): 21.8 / 27.4 / 34.8

Rated peak withstand current (KA): 63 / 80 / 100

Protection grade: IP4X / IP2X

Insulation level: 1min power frequency withstand voltage phase to phase and ground 42KV; fracture 48kv

Lightning impulse withstand voltage phase to phase and to ground 75KV; fracture 85kv

c) Use environment

Indoor, ambient air temperature upper limit + 40 ℃ lower limit - 15 ℃

Maximum altitude of equipment installation site 1000M

Ambient humidity daily average relative humidity ≤ 95% monthly average relative humidity ≤ 90%

The seismic intensity shall not exceed 8 degrees

The surrounding air shall not be polluted by corrosive or combustible gas, water vapor, etc

No serious pollution and frequent violent vibration

Note: if there are special requirements for the use environment, please explain before ordering.

● Model: Siemens NXAirS LP

● Name: AC medium voltage metal enclosed switchgear 

● Rated voltage (Ue): 12kV;

● Power frequency withstand voltage (1min): 42/48kV;

● Rated impulse withstand voltage (Uimp): 75/85kV;

● Rated busbar current (Ir): 4000A;

● Short time withstand current (Icw) (4s): 40kA;

● Short circuit drop-out current: 40kA;

● Short circuit making current (4s): 100kA;

● Peak withstand current: 100kA;

● Protect Degree: IP40, door open IP2x;

● Standard: IEC62271-200;

● Dimension: ≦2500A 2200H *800W *1350D (mm) ≧3150A 2300*1000*1450