接點輸入改變對應的靈活邏輯操作響應時間等于去振蕩時間定值(頻率追蹤啟用時隨系統(tǒng)頻率改變)。如果狀態(tài)改變恰好發(fā)生在保護檢查過程之后，只能由下一個保護檢查過程來進行識別。也就是說，狀態(tài)改變的識別要延后一個保護檢查過程時間。如果改變發(fā)生在保護檢查過程之前，則改變能夠被馬上識別。統(tǒng)計表明,一般情況下平均存在半個保護檢查周期的延時。

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