FZN21-12 Series Indoor High Volgate Break Switch
1 ISO9001:2000
2 12KV
3 Safty,Perfect,Loss energy loss
Overview
FN7——12DRModel Indoor AC HV Load Switch is suitable in 50Hz, rated voltage of 12Kv the three-phase AC power system as the breaking load short-circuit current of the power and used the Closing, until the combination of electrical short-circuit current can be breaking any current can be used as protection purposes.
Installation and use of
* Ambient air temperature Limit+40°C Lower limit -25°C
* Above sea level1000m;
*Relative humidity: daily average is less than 95%, on average less than 90%;
* The surrounding air should not be corrosive or flammable gases and water vapor and other obvious contamination;
* Without frequent violent vibration.
Rated parameters
| Rated voltage (KV rms) | 12 | ||
| Insulation level | 1min power frequency withstand voltage (KV. RMS) | White. Phase to 42 | Isolation break48 |
| Lightning impulse voltage (KV. a peak) | White. Phase to 75 | Isolation break85 | |
| Rated Current(A) | 400 | 630 | |
| Rated thermal current (KA RMS 4S) | 12.5 | 20 | |
| Rated dynamic current KA (peak) | 31.5 | 50 | |
| Rated short circuit making current (KA peak) | 31.5 | 50 | |
