注意，在大型的油路斷路器中,對(duì)于小于25%消失率的中斷時(shí)間可以明顯地長(zhǎng)于正常中斷時(shí)間。開關(guān)失靈1使用3:如果設(shè)為是,慢速路徑是可操作的。開關(guān)失員1計(jì)時(shí)器3啟動(dòng)時(shí):定時(shí)器3設(shè)為與定時(shí)器2有相同的時(shí)間間隔,外加–個(gè)增大的安全裕度。由于這個(gè)路徑是用來(lái)只在低水平時(shí)動(dòng)作的,延時(shí)可以是按從300到500毫秒的順序。

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