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12KV VCB with Fuse combination
VF(R)-12 indoor embedded high-voltage alternating-current vacuum load switch –fuse combination (vacuum load switch) is a new-generation vacuum switching equipment developed based on unique design ideas to meet the market demand. It is widely used for indoor armored air-insulated switch cabinets. In normal conditions, it can operate within its technical parameters in any grid of the specified voltage level safely and stably.
Normal operating conditions
● Ambient temperature: - 40℃~+40℃ (below 35°C within 24 hours)
● Relative humidity: ≤95% (daily average) or ≤90% (monthly average)
● Altitude: ≤ 1000m
| Item | Unit | Reference value | |||
|
VF-12/T630-20 Vacuum load switch |
VFR-12/T125-50 Vacuum load switch-fuse combination |
VFH-12/T630-25 High breaking capacity vacuum switch |
VFHR-12/T125-50 High breaking capacity vacuum switch-fuse combination |
||
| Rated voltage | kV | 12 | 12 | 12 | 12 |
|
Rated insulation level voltage Lightning impulse withstand voltage |
kV | 75 | 75 | 75 | 75 |
| Rated insulation level voltage 1 min power-frequency withstand | kV | 42 | 42 | 42 | 42 |
| Rated frequency | Hz | 50/60 | 50/60 | 50/60 | 50/60 |
| Rated current | A | 630 | 125(fuse) | 630 | 125(fuse) |
| Rated short-circuit breaking current | kA | - | 50(fuse) | 25(arc suppression chamber) | 25(arc suppression chamber) |
| Rated short-circuit making current(peak value) | kA | 50 | - | 63 | - |
| Rated short-time withstand current | kA | 20 | - | 25 | - |
| Rated withstand current(peak value) | kA | 50 | - | 63 | - |
| Rated breaking current of cable during charge | A | 16 | - | - | - |
| Rated breaking current of no-load transformer | KVA | 1250 | - | 1250 | - |
| Rated breaking take-over current | A | - | 3150 | - | 3150 |
| Breaking times of the rated short-circuit current | Times | ||||
| Mechanical life | M2 level | M2 level | M2 level | M2 level | |
| Weight | kg | 125 | |||
