| Breaking Capacity: | High Voltage Circuit Breakers |
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| Operation: | Energy-storage Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | Vacuum |
| Installation: | Fixed |
| Structure: | ACB |
| Samples: |
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| Customization: |
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Audited Supplier Get ready to experience the power of the 12kV High Voltage Vacuum Interrupter Elite! This top-of-the-line product boasts a ceramic insulating shell, a middle sealing or built-in fixed shielding tube, and copper and chromium alloy contact material. But that's not all - the cup-shaped longitudinal magnetic electrode has been optimized for uniform electromagnetic field distribution, making it more stable and reliable than ever before. And with a special sophisticated process that improves insulation levels, you can trust that this product will exceed your expectations.
Designed to meet the needs of our customers, VACEM has introduced two series of 12kV vacuum interrupters - perfect for air insulation, embedded insulation, or external insulation protection. Whether you're looking for an indoor or outdoor vacuum circuit breaker or vacuum distribution device, this product is the perfect control and protection device for transmission and distribution electrical power grids. With a frequency of 50Hz/60Hz, rated voltage of 12kV, rated current of 630A-4000A, and rated short circuit breaking current of 5kA-40kA, the 12kV High Voltage Vacuum Interrupter Elite is the ultimate choice for power and reliability. VI is mainly applied to VZW8 series outdoor MV vacuum circuit breaker. Meets or exceeds the requirement of IEC62271-100 and E2 level in GB1984-2003.
Specification of VI
| Parameter item | Unit | Data |
| Rated voltage | kV | 12 |
| Rated current | A | 1250 |
| Rated frequency | Hz | 50/60 |
| Rated short-time power frequency withstand voltage(1 min) | kV | 42 |
| Rated lightning impulse withstand voltage | kV | 75 |
| Rated short-circuit breaking current | kA | 25 |
| Rated peak withstand current | kA | 63 |
| Rated short-circuit making current | kA | 63 |
| Rated short-time withstand current | kA | 25 |
| Rated short-circuit duration | s | 4 |
| Rated single capacitor bank breaking current | A | 630 |
| Rated back to back capacitor bank breaking current | A | 400 |
| Breaking operation of rated short circuit breaking current | times | 30 |
| Mechanical life | times | 10000 |
| Contact closing force due to bellows and atomsphere | N | 90±30 |
| Force required to hold contact open at full stroke | N | 150±40 |
| Circuit resistance at lowest rated contact force | μΩ | ≤25/≤20 |
| Contact limit erosion | mm | 3 |
| Internal gas pressure | Pa | ≤1.33×10-3 |
| Weight of moving parts | kg | 0.7/0.8 |
| Storage life | year | 20 |
| Parameter item | Unit | Data |
| Rated clearance between open contacts | mm | 10±1 |
| Average opening speed | m/s | 1.1±0.2 |
| Average closing speed | m/s | 0.6±0.2 |
| Rated contact pressure | N | 2500±200 |
| Contact bouncing duration at closing operation | ms | ≤2 |
| Closing and opening non-simultaneity of contacts | ms | ≤2 |
| Maximum rebound during opening | mm | ≤2 |
| Rated contact stroke | mm | 3.5±0 |
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