開關失炅1中性點電流低定啟動:這個定值設置中性點電流輸出監(jiān)測水平。通常,這個定值應當檢測到被保護斷路器上在插入電阻之后可能流過的最小電流(大約90%的電阻電流)。這個定值只對三相斷路器失靈保護方案有效。開關失靈1低定低[時延:設置插入電阻后的電流檢測啟動延時。

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