FKN(FN7) INDOOR AC HIGH-VOLTAGE VACUUM LOAD SWITCHES ( WALL-HUNG TYPE )
Product Overview
FN7-12 indoor high-voltage load switch and fuse combination electrical appliance is a new type of gas-producing indoor high- voltage load switch, suitable for AC 50Hz, rated voltage 12kV three- phase AC power system, as the breaking load current and switch Used for short-circuit current.
Working Environment
1.mbient air temperature: upper limit: +40 ℃ ;lower limit: -10 ℃ in general areas, -25℃ in high-cold areas;
2. Altitude: The altitude is 1000m and below.
3. Relative humidity, daily average not greater than 95%, monthly ； average not greater than 90%;
4. The surrounding air should not be significantly polluted by corrosive or； flammable gases and water vapor;
5. No frequent severe vibration
Main Technical Parameters
| No. | Item | Data | ||
| 1 | Rated voltage(kV) | 12 | ||
| 2 | Rated insulation level voltage | Power frequency 50 Hz withstand voltage 1 min (kV) | interphase,to earth 42 | isolating fracture 48 |
| 1.2/5 us Impact withstand voltage (kV) | interphase,to earth 75 | isolating fracture 85 | ||
| 3 | Rated current (A) | 400 | 630 | |
| 4 | Rated short-time withstand current (kA，4S) | 12.5 | 20 | |
| 5 | Rated peak withstand current (kA) | 31.5 | 50 | |
| 6 | Load switch, ground switch, closing capacity (kA、 peak) | 31.5 | 50 | |
Appearance And Installation Dimensions
