GN19-12 Disconnector Switch is used in AC 50Hz, rated voltage 12kV and below power systems, with human operated mechanism, as a partition and closure of electrical appliances in the presence of voltage and no load.
Product model specifications | GN19-12/400-12.5 | GN19-12/630-20 | GN19-12/1000-31.5 | GN19-12-1250-31.5 | |
Item | GN19-12D/400-12.5 | GN19-12D/630-20 | GN19-12D/1000-31.5 | GN19-12D-1250-31.5 | |
Rated voltage (kV) | 12 | ||||
Maximum voltage (kV) | 12.7 | ||||
Rated current (A) | 400 | 630 | 1000 | 1250 | |
Thermal stability current (kA) | 12.5 | 20 | 31.5 | ||
Thermal stabilization time (s) | 4 | ||||
Dynamic stable current (kA) | 31.5 | 50 | 80 | ||
Rated insulation level | Lightning impulse voltage (kV) | Interphase Phase to ground 75 Fracture 85 | |||
1min power frequency withstand voltage (kV) | Interphase Phase to Ground 42 Fracture 48 |
1.Ambient temperature: -25°C ~ +40°C;
2.Altitude: ≤1000m;
3.Relative humidity: daily average ≤95%, monthly average ≤90%;
4.Earthquake intensity: ≤8 level;
5.Installation places: no fire, explosion hazard, serious filthy, chemical corrosion or severe vibration.