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Development of New High Voltage Phase Selection Fast Circuit Breaker by China Electric Power Research Institute


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2024-03-25

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Development of New High Voltage Phase Selection Fast Circuit Breaker by China Electric Power Research Institute

On March 8, China Electric Power Research Institute Co., Ltd. led the development of a new type of 252 kV phase-selected rapid sulfur hexafluoride.Circuit BreakerThrough the type test verification, the overall technology has reached the international leading level. According to introduction, the traditional circuit breaker has a long breaking time under the condition of power frequency, and can not meet the requirements of low frequency long arc breaking. It is estimated that this new type of circuit breaker can shorten the opening time from 30 milliseconds required by the traditional short circuit to less than 8 milliseconds, shorten the short arcing time from 11 milliseconds to 7 milliseconds, and can accurately predict the short-circuit current zero point within 3 to 5 milliseconds, thus regulating the arcing time.

Article from: Polaris power network