| Breaking Capacity: | High Voltage Circuit Breakers |
|---|---|
| Operation: | Electric Type |
| Speed: | High-Speed Circuit Breaker |
| Arc-extinguishing Medium: | Vacuum |
| Installation: | Insert |
| Structure: | Vcb |
| Customization: |
|---|
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Product Description
VS1(ZN63A)-12 type indoor high-voltage vacuum circuit breaker, a three-phase AC 50Hz rated voltage of 12KV power system indoor switching equipment, as the power grid equipment, industrial and mining enterprises power equipment protection and control unit. It is suitable for frequent operation at the rated working current, or where the short circuit current is broken multiple times.
The circuit breaker adopts the integrated design of operating mechanism and circuit breaker body. It can be used as a fixed installation unit, and it can also be equipped with a propulsion mechanism to form a handcart unit.
| No. | Items | Unit | Parameters | ||
| 1 | Rated voltage | kV | 12 | ||
| 2 | (1min)Rated short duration power frequency withstand voltage (1min) | 42 | |||
| 3 | Rated lightning impulse withstand voltage(peak) | 75 | |||
| 4 | Rated frequency | Hz | 50 | ||
| 5 | Rated current | A | 630 1250 |
1250 1600 2000 2500 3150 |
1250 1600 2000 2500 3150 |
| 6 | Rated short circuit breaking current | kA | 25 | 31.5 | 40 |
| 7 | Rated short-time withstand current | 25 | 31.5 | 40 | |
| 8 | Rated short-circuit duration | s | 4 | ||
| 9 | Rated peak withstand current | kA | 63 | 80 | 100 |
| 10 | Rated short circuit closing current | 63 | 80 | 100 | |
| 11 | [1min]Secondary circuit power frequency withstand voltage (1min) | V | 2000 | ||
| 12 | Rated single/back to back capacitor bank breaking current | A | 630/400 (800/400 for 40kA) | ||
| 13 | Rated capacitor bank inrush making current | kA | 12.5 (frequency of no more than 1000Hz) | ||
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