I. Overview:

XGN□-12 AC high-voltage sulfur hexafluoride ring network switchgear (hereinafter referred to as ring network cabinet) is widely used in industrial and mining enterprises, high-rise buildings, residential areas, schools, etc. as the link between ring network power supply and terminal distribution of 10KV power distribution systems. use. The ring main unit is equipped with a sulfur hexafluoride load switch or a sulfur hexafluoride load switch and fuse combination appliance that can make and break the rated load current, make the rated short-circuit current, and break the no-load current of the transformer. The combined appliance is equipped with The fuse can break 31.5KA short-circuit current at one time, playing a control and protective role in the power system.

2. Normal usage conditions:

1. The altitude does not exceed 2500m 2. Ambient temperature +40℃～-35℃ 3. Relative humidity The daily average value is not more than 95%, and the monthly average value is not more than 90%. 4. The surrounding air should not be significantly contaminated by corrosive or flammable gases, water vapor, etc.; 5. There should be no frequent violent vibrations. When the usage conditions are different or there are other requirements, it is necessary to negotiate with the manufacturer.

3. Technical parameters

Rated voltage [KV] :12

Rated lightning impulse withstand voltage between poles and poles to ground [KV] 75

Between fractures [KV] 85

One-minute power frequency withstand voltage between poles and poles to ground [KV] 42 Between fractures [KV] 48

Room frequency [HZ] 50

Rated current main bus [A] 1250

Branch bus [A] 630

Rated short-time withstand current main circuit [KA] 25

Ground circuit [KA] 25

Rated short-circuit duration [S] 2

Rated peak value Withstand current [KA] 63

Transfer current [A] 1500

Protection grade IP3X

Load switch mechanical life time 5000

Grounding switch mechanical life time 1000

Load switch cabinet width [mm] 375,500,750

Cabinet depth [mm] 1000

Cabinet height [mm] 1400, 1600,1850

Low voltage room height [mm] 450

Circuit breaker cabinet width [mm] 750

Cabinet depth [mm] 1000

Cabinet height [mm] 2150