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Description:
FZW33 12KV/24KV Outdoor AC vacuum disconnect load breaker is a new product adopts domestic existing mature load breaker switch production experience and overseas advanced technology to design and manufacture. The load breaker is composed of disconnect blade, vacuum interrupter and operation mechanism. vacuum extinguishing arc, there are merits as strong extinguishing arc ability, reliable performance, long lifetime, small volume, no explosive danger and no pollution to environment.
It accords with the standards of IEC62271-102 & GB/T3804:3.6~40.5kV High voltage switches, IEC60694 & GB/T11022: High voltage switch apparatus and control apparatus.
Techincal data:
| N0. | Test Item | Unit | Data | |
| 1 | Rated voltage | kV | 12 | 24 |
| 2 | Rated current | A | 400/630 | 400/630 |
| 3 | Rated frequency | Hz | 50/60 | 50/60 |
| 4 | Rated short-time withstand current | kA | 20 | 20 |
| 5 | Rated short-circuit duration | s | 4 | 4 |
| 6 | Rated active load breaking current | A | 400/630 | 400/630 |
| 7 | Rated loop breaking current | A | 400/630 | 400/630 |
| 8 | Rated cable charging current | A | 12 | 12 |
| 9 | 5% rated active load breaking current | A | 31.5 | 31.5 |
| 10 | Rated short-circuit making current | kA | 50 | 50 |
| 11 | Main loop resistance | μΩ | ≤100 | ≤100 |
| 12 | power frequency withstand voltage against the earth, between phases | kV rms | 40 | 65 |
| 13 | power frequency withstand voltage against the isolating distance | kV rms | 48 | 79 |
| 14 | Lightning impulse withstand voltage against the earth, between phases (peak) | kV | 75 | 125 |
| 15 | Lightning impulse withstand voltage against the air gap(peak) | kV | 85 | 145 |
| 16 | Mechanical life | Times | 10000 | 10000 |
| 17 | Three phase closing asynchronous | ms | ≤5 | ≤5 |
| 18 | Main contact blade pressure | N | 520 | 520 |
| 19 | Distance between electric parts and phase to earth | mm | ≧300 | ≧600 |
| 20 | Rated operating force | N | ≤300 | ≤300 |
