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) |