VSG/C-40.5 Series Side Mounted Vacuum Circuit Breaker is a new type of three phase 50Hz according to the unique design concept and combined with the market demand and development, the rated voltage of indoor switchgear 40.5kV, it can be provided to industrial and mining enterprises, power plant and substation as the control and protection of electrical equipment, and is suitable for frequent operation.
Applying ambient conditions
1. Ambient temperature: -10 °C ~ +40 °C (It allows storage and transportation at -30 degrees centigrade);
2. Ambient humidity: the average humidity of a day should be no more than 95%. The average humidity of a month should be no more than 90%
3. Saturated vapor pressure: the average pressure of a day should be no more than 2.2kPa; the average pressure of a month should be no more than 1 .8kPa;
4. Altitude: < 1500m;
5. Earthquake intensity:≤8 degree;
6. It should be installed in the place without fire, explosion, serious filth, and chemical erosion and violent vibration.
| No. | Item | Unit | Data | ||
| 1 | Rated voltage | kV | 40.5 | ||
| 2 | Rated insulation level |
1 min power frequency withstand voltage (RMS) | kV | 95 | |
| Lightning impulse withstand voltage (peak) | kV | 185 | |||
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Rated current | A | 1250/1600/2000 | ||
| 5 | 4S rated short-time withstand current | kA | 25 | 31.5 | |
| 6 | Rated peak withstand current | kA | 63 | 80 | |
| 7 | Rated short circuit breaking current | kA | 25 | 31.5 | |
| 8 | Rated short circuit closing current | kA | 63 | 80 | |
| 9 | Rated operating sequence | O-0.3s-CO- 180s-CO | |||
| 10 | Rated short circuit breaking current breaking times | times | 20 | ||
| 11 | Breaking current of rated capacitor bank | A | 630 | ||
| 12 | Mechanical Life | times | 20000 | ||
After adjusting the circuit breaker, the mechanical characteristic parameters are shown below
| No. | Item | Unit | Data | |
| 1 | Contact opening distance | mm | 18±1 | |
| 2 | Contact stroke | mm | 5±1 | |
| 3 | Average closing speed | m/s | 0.8±0.2 | |
| 4 | Average breaking speed | m/s | 1.8±0.2 | |
| 5 | Breaking time(rated voltage) | ms | 20-50 | |
| 6 | Closing time(rated voltage) | ms | ≤100 | |
| 7 | Contact closing trip time | ms/M | ≤3 | |
| 8 | Three phase switching off synchronism | ms/M | ≤2 | |
| 9 | The movable and static contact allow the accumulated thickness of friction | mm | 3 | |
| 10 | Dominant loop resistance | μΩ | ≤60 | |
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