All of the charged component in the switching station sealed in metal box that filled with SF6 gas, switching station fulled of SF6 as interrupter and insulating medium,using manual or electric energy storage spring mechanism.Each device has a barometer that it can check the internal pressure, each device also provides safety valve to pressure relief to ensure the safety of operation in the condition of internal overpressure. the grounding switch of actuator, fuses and outlet ends is still in the air, convenient for maintaining and replacing fuses.
Name | Units | data | |
Rated voltage | KV | 10 | |
The maximum working voltage | KV | 12 | |
Lightning impulse withstand voltage | phase-to-ground,phase-to-phase | KV | 75 |
(Peak) | Fracture | KV | 85 |
Power frequency withstand voltage | phase-to-ground,phase-to-phase | KV | 42 |
Fracture | KV | 48 | |
Load Switch(SF6) | rated current | A | 630 |
Rated thermal current(2s) | KA | 20 | |
Rated dynamic current(peak) | KA | 50 | |
Rated short circuit making current(peak) | KA | 50 | |
Rated transfer current | A | 2000 | |
Rated current breaking times | times | 1000 | |
Bus side earthing switch | Rated thermal current(2s) | KA | 20 |
Rated dynamic current | KA | 50 | |
Rated short circuit making current(peak) | KA | 50 | |
Fuse | Rated current | A | 25-125 below 1600KVA |
Rated breaking current | KA | 31.5 | |
Mechanical life | times | 2000 | |
Protection degree | Fuses, cable connector | IP | 30 |
SF6 Rated gas pressure | (20℃Gauge pressure) | Mpa | 0.045 |
SF6 Gas leakage rate | ≤0.1% | ||
