Transmission 40.5kV Manual Vacuum Circuit Breaker Draw Out Type
1. Transmission 40.5kV Manual Vacuum Circuit Breaker Draw Out Type
"Vacuum circuit breaker" is named after its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no need for maintenance of arc extinguishing. The application in the network is more popular. Vacuum circuit breaker is an indoor power distribution device in a 3~10kV, 50Hz three-phase AC system,
2. Parameter of air circuit breaker draw out type
| NO | Item | Units | Technical parameters | |
| 1 | Rated voltage | kV | 40.5 | |
| 2 | Thunder impulse withstand voltage(peak value) | kV | 185 | |
| 3 | lmin industrial frequency withstand voltage | kV | 95 | |
| 4 | Rated frequency | Hz | 50 | |
| 5 | Rated current | A | 1250,1600,2000 | |
| 6 | Rated short-circuit break current | kA | 25 | 31.5 |
| 7 | Rated peak value withstand current | kA | 25 | 31.5 |
| 8 | Rated peak value withstand current | KA | 63 | 80 |
| 9 | Rated short-circuit duration time | s | 4 | |
| 10 | Rated short circuit breaking time | ms | ||
| 11 | Rated short circuit closing current | kA | 80 | |
| 12 | Rated operation order | 0-0.3s-C0-180s-C0 | ||
| 13 | Time of closing brake | ms | 50~85 | |
| 14 | Time of breaking brake | ms | 40~85 | |
| 15 | Rated short-circuit current break and close times | Times | 20 | |
| 16 | Mechanical life-span | Times | 10000 | |
| 17 | Rated dropout current of condenser bank | A | 630 | |
| 18 | Rated power of energy-storage electric machine | W | 275 | |
| 19 | Rated volt of energy-storage motor | V | 25 ± 2 | |
| 20 | Storage time | S | ≤15 | |
| 21 | Closing and opening solenoid rated voltage | V | ≈220,110 | |
| 22 | Loss of pressure tripping device rated voltage | V | ≈220,110 | |
| 23 | Over current tripping device rated current | A | 5 | |
| 24 | Auxiliary switch rated voltage current | A | DC10 | |
3. Working application
Amplitude: earthquake intensity does not exceed 8 °,
Air relative humidity on average less than 95%, on average less than 90%
An ambient air temperature: to +40 °C, the lower limit of -150°C,
Altitude:. ≤ 1000m (For higher altitudes, the rated insulation board level relative increase)
No risk of fire, explosion, serious pollution, chemical corrosion and severe vibration.
4. Technical drawings
5. Factory
6. Delivery
7. FAQ
1. Send the technical data, better for all useful information; we will make a good recommendation.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.
3. Usually shipped by sea, small order or urgent order we can send you by air.
4. All our activities are accredited to ISO 14001:2015 and IEC standard.
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