Type HXGNO-12 box type fixed metal closed switchgear (referred to as ring network cabinet) is a complete set of AC high voltage
electrical equipment with rated voltage from 12kV to 35kV and rated frequency of 50Hz. It is mainly used in three-phase AC ring
network, terminal distribution network and industrial electrical equipment for receiving and distributing electric energy. It is
also suitable for loading into box type substation.
| Serial number | Project | units | FN12-10 | FZN25-12 | |
| 1 | Rated voltage | kV | 12 | ||
| 2 | 1min power frequency withstand voltage | Ground and interphase 42; Isolation fracture 48 | |||
| 3 | Lightning impulse voltage (peak value) | Ground and interphase 75; Isolation fracture 85 | |||
| 4 | Rated frequency | Hz | 50 | ||
| 5 | Rated current of main bus | A | 630 | ||
| 6 | load | Rated current | 630 | ||
| 7 | switch | Lifetime at rated current | Times | Not less than 100 | |
| 8 | Breaking no-load transformer capacity | kVA | 1250 | ||
| 9 | Rated thermal stability current | kA/s | 20/4; | ||
| Ground switch 20/2 | |||||
| 10 | Rated dynamic stability current (peak value) | kA | 50 | ||
| 11 | Rated short-circuit making current (peak value) | 50 | |||
| 12 | combination | Fuse rated current | A | 100 | |
| 13 | Electrical appliances | Rated transfer current | 1500 | 2000 | |
| 14 | Rated short-circuit breaking current | kA | 31.5 | ||
| 15 | Equipped with fuse model | SQLAJ-12(XRNTa-10) | |||
| 16 | Mechanical life | Times | 2000 | 10000 | |
| 17 | Auxiliary circuit 1min power frequency withstand voltage | kV | 2 | ||
| 18 | Working voltage of electric operating mechanism | V | Ac/dc 220;110 | ||
| 19 | Protection level | IP2X | |||
| 20 | Dimensions (width x depth x height) | mm | 650(850)x900x2000(2200) | ||
1.Working environment temperature: upper limit +40ºC, lower limit: -25ºC.
2.The altitude of the use site shall not exceed 2000m.
3.air relative humidity: daily average is not more than 95%, monthly average is not more than 90%.
4. the surrounding air is not corrosion or combustible gas, water vapor and other obvious pollution.
5. no frequent violent vibration.
