Xi'an Xigao Electricenergy Group Co., Ltd.
Xi'an Xigao Electricenergy Group Co., Ltd.
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145kV SF6 circuit breaker adopts three phase porcelain knob construction, outdoor design.
| No. | Item | Unit | Parameter | |
| 1 | Rated voltage |
kV | 132/145 | |
| 2 | Rated power frequency withstand voltage(1min) | to ground | 230/275 | |
| between gap | 265/275 | |||
| 3 | Rated lightning impulse withstand voltage | to ground | 550/650 | |
| between gap | 630/650 | |||
| 4 | The power frequency withstand voltage when gas SF6 is zero pressure(5min) | 95 | ||
| 5 | Rated frequency | Hz | 50 | |
| 6 | Rated current | A | 3150 | |
| 7 | First pole to clear factor | 1.5 | ||
| 8 | Rated short circuit breaking current |
kA | 40/31.5 | |
| 9 | Rated short circuit making current | 100/80 | ||
| 10 | Rated short time withstand current | 40/31.5 | ||
| 11 | Rated peak withstand current | 100/80 | ||
| 12 | Rated short circuit continuous time | s | 4 | |
| 13 | Rated out of synchronism breaking current | kA
| 10 | |
| 14 | Short line fault breaking current | 36,30 | ||
| 15 | Rated line charge breaking current | A | 31.5 | |
| 16 | Rated operating sequence | O-0.3s-CO-180s-CO | ||
| 17 | Switch off time | ms | 30±3 | |
| 18 | Switch on time | 75±8 | ||
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6. FAQ
1. Send the technical data, better for all useful information; we will make a good recommendation.
2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.
3. All our activities are accredited to ISO 14001:2015 and IEC standard.