| Customization: | Available |
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| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Energy-storage Type |
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VBI-24 Side Mounted Vacuum Circuit Breaker With 3 Current Transformers For Indoor Switchgear
VBI-24 indoor medium-voltage sealed vacuum circuit breaker is suitable for air-insulated indoor switches and is used for control and protection in power grids with AC and rated voltage of 24KV and below. Vacuum circuit breakers are used in frequent It has extremely excellent performance in operation and situations where the circuit breaker current needs to be opened, fully meets the requirements of automatic closing, and has high reliable operation and service life.
The operation mechanism of VBI-24 side mounted type vacuum circuit beaker is used spring to storage energy, which can be operated by two ways, manual or electrical. The characteristics are accordance with GB1984-89 <AC High Voltage Circuit Breaker>, JB3855-96<10kv Indoor High Voltage Vacuum Circuit Breaker General Technical Specifications>, Relevant Provisions of IEC56 standard.
Advantages of installing current transformers on side-mounted circuit breakers
1. Integrated design: Installing the current transformer directly on the circuit breaker makes installation and wiring easier, reducing additional installation space and costs.
2. Instant response: Directly monitoring the current near the circuit breaker can respond to fault conditions more quickly, improving the protection speed and accuracy of the system.
3. Reduced interference: Reduced interference and attenuation in the signal transmission path, improving the accuracy of the measurement.
Main Technical Specification
| No. | Name | Unit | Data | |||
| * | Type | / |
Insulating cylinder Epoxy resin embedded poles Nylon embedded poles |
Upper outlet Side outlet |
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| 1 | Rated voltage | kv | 24 | |||
| 2 | Rated insulation level | Power frequency withstand voltage | 65 | |||
| Rated lightning impulse withstand voltage | 125 | |||||
| 3 | Contact opening distance |
mm |
12±1 | |||
| 4 | overtravel | 3±0.5 | ||||
| 5 | Distance between phases | 210±1 | ||||
| 6 | Contact closing bounce time | ms | ≤2 | |||
| 7 | Three-phase points,closing at different times | ≤2 | ||||
| 8 | Opening time | ≤50 | ||||
| 9 | Closing time | ≤100 | ||||
| 10 | Average opening speed(contact is separation after 6mm) | M/s | 0.9~1.3 | |||
| 11 | Average opening speed(contact is closed before 6mm) | 0.4~0.8 | ||||
| 12 | Closing contact contact pressure | N | 25KA | 31.5KA | ||
| 2200±200 | 3200±200 | |||||
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