LFD series auxiliary switch is one of the supporting components of high-voltage complete equipment. The switch structure is compact. The thickness of each switch section is only 6.5mm, which is about half the thickness of each section of the usual auxiliary switch. The switch adopts cam structure and permanent magnet magnetic blowing arc extinguishing method. , greatly enhances the breaking capacity of the switch, and is widely used to control the opening, closing, interlocking, and signal circuits of various high-voltage switch operating mechanisms. It can also be used as a conversion or combination switch.
1. Ambient temperature: -40℃~+70℃;
2. Altitude: no more than 5,000 meters;
3. Humidity: the average relative humidity within 24 hours does not exceed 95%; the average water vapor pressure does not exceed 2.2KPa; the monthly average relative humidity does not exceed 90%; the average water vapor pressure does not exceed 1.8KPa;
4. Vibration acceleration is not greater than 15m/s²;
5. The surrounding air is not significantly contaminated by dust, smoke, corrosive and flammable gases.
Rated current |
20A |
|
Agreed heating current |
25A |
|
Rated voltage |
直流DC |
交流AC |
220V |
500V |
|
Breaking capacity (>1°/ms) |
T0.95 :6P=300ms |
Cosφ=0.95 |
5A |
15A |
|
Power frequency withstand voltage |
2500V(50Hz) /1min |
|
Mechanical life |
20000次 |