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Product Overview
The 40.5kV switch series composite apparatus is a power supply equipment designed and developed by our company to meet the development needs of modern medium voltage equipment. It absorbs the essence of similar products at home and abroad, and has innovation. It is suitable for networks with AC 50Hz and rated voltage of 40.5KV. It is designed specifically for the 35kV system of wind and solar power generation, and can be used for hanging installation on the inner wall of wind power towers. It can also be used as an independent electrical unit in 40.5kV power systems or box type substations. This product has a scientifically reasonable structure, and the switch spring operating mechanism is independently developed by our company, with simple and reliable operation.
Technical Parameter
| NO. | Name | Unit | Data | |
| 1 | rated voltage | kV | 40.5 | |
| 2 | frequency | Hz | 50 | |
| 3 | 1-minute power frequency withstand voltage | Interphase, ground/isolation fracture | kV | 95/118 |
| 4 | Lightning impulse withstand voltage | Interphase, ground/isolation fracture | 185/215 | |
| 5 | Control circuit power frequency withstand voltage for 1 minute | 2 | ||
| 6 | Circuit breaker | Rated current | A | 630~1250 |
| 7 | Rated short circuit breaking current | kA | 20~31.5 | |
| 8 | Rated short-time withstand current/time | KA/s | 20~31.5/4 | |
| 9 | Rated bee value with attached current | kA | 50~80 | |
| 10 | Rated operating sequence | O-0.3S-CO-180S-CO | ||
| 11 | mechanical life | Circuit breaker arc extinguishing chamber | times | 10000 |
| disconnector | 3000 | |||
| earthing switch | 3000 | |||
| 12 | Working voltage of spring operating mechanism | V | AC.DC220.110 | |
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