Medium Voltage Vacuum Load Break Switch (Switch-fuse Combination), FZN25-24D/FZRN25-24D
Request a Quote
This air-insulated load break switch is a control and protection device used in three phase AC 50Hz 24kv power distribution networks, suitable for power distribution stations of urban buildings, industrial production companies, mining sites, etc.
Environmental Conditions
- Ambient temperature: up to 40°C, greater than -25°C (can be stored at 30°C);
- Altitude: lower than 1000 m;
- Relative humidity: daily average ≤ 95% ( 20°C), monthly average ≤ 90% ( 20°C);
- Earthquake intensity: ≤ magnitude 8;
- The ambient air is not significantly polluted by corrosive gases, flammable gases, or vapors;
- Areas without severe vibration;
- Pollution level does not exceed level II;
Technical Parameters
| Item | Unit | Parameters | |
| FZN25-24D/T630-20 | FZRN25-24D/125-315 | ||
| Rated voltage | KV | 24 | |
| Rated frequency | HZ | 50 | |
| Rated current | A | 630 | 125 |
| Power frequency withstand voltage(1min) | kV | arc extinguishing chamber 65; clearances to both earthed and live parts 65 | |
| Lightning impulse withstand voltage(peak) | kV | clearances to both earthed and live parts 125 | |
| Rated short-time withstand current | kA | 20 | |
| Rated short-circuit duration | S | 4 | |
| Rated peak withstand current | kA | 50 | |
| Rated closed-loop breaking current | A | 630 | |
| Rated short-circuit breaking current | kA | 31.5 | |
| Rated short-circuit making current | kA | 50 | |
| Auxiliary circuit rated voltage | V | AC,DC/220,110 | |
| Vacuum interrupter | Times | 10000/2000 | |
| Earthing switch | 2000 | ||
Related products
Send Message
Other Products
Most Recent
More
Other Products
Videos
