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行動計劃》指出,當前,我國經濟已由高速增長階段轉向高發(fā)展階段。在近十年的機電產品再制造試點示范、產品認定、技術推廣、建設等工作基礎上,亟待進一步聚焦具有重要戰(zhàn)略作用和巨大經濟帶動潛力的關鍵裝備,開展以高技術含量、高可靠性要求、高附加值為核心特性的智能再制造,推動深度自動化無損拆解、柔性智能成形加工、智能無損檢測評估等智能再制造共性技術和專用裝備研發(fā)應用與產業(yè)化推廣。推進智能再制造,有利于帶動綠色制造技術不斷突破,有利于重大裝備運行保障能力,有利于推動實現綠色增長?!缎袆佑媱潯诽岢?,到2020年,突破一批制約我國智能再制造發(fā)展的拆解、檢測、成形加工等關鍵共性技術,智能檢測、成形加工技術達到先進水平;發(fā)布50項智能再制造、技術、裝備及評價等;初步建立可推廣的再制造產品應用市場化機制;推動建立100家智能再制造示范企業(yè)、技術研發(fā)中心、服務企業(yè)、信息服務平臺、產業(yè)集聚區(qū)等,帶動我國再制造產業(yè)規(guī)模達到2000億元。
4.峰值耐受電流反映了斷路器承受由于短路電流產生電動力的耐受性能,它決定斷路器的導電部分和絕緣支撐件的機械強度以及觸頭的結構形式。
5.操作性能
(1)全開斷時間 是指斷路器接到分閘命令瞬間起到電弧熄滅為止的時間間隔。即
(4-10-4)
式中 ——全開斷時間,s;
——分閘時間,s;從斷路器接到分閘命令瞬間到
所有相的觸頭都分離的時間間隔,亦稱為斷
路器固有分閘時間;
——燃弧時間,s;是指某一相首先起弧瞬間到所
有相電弧全部熄滅的時間間隔。
全開斷時間是說明斷
路器開斷過程快慢的主
要參數,它直接影響故
障對設備的損壞程度、
故障范圍、傳輸容量和
系統(tǒng)的穩(wěn)定性。 斷路器開斷時間示意圖
(2)合閘時間 處于分閘位置的斷路器,從接
到合閘命令瞬間起到所有相的觸頭均接觸為止的
時間稱為合閘時間。
6.自動重合閘性能
自動重合閘的操作循環(huán):分— —合分— —合分。 為斷路器開斷故障電路,從電弧熄滅起到電路重新接通的時間,稱為無電流間隔時間,一般為0.3s或0.5s; 為強送電時間,一般為180s。
斷路器開斷時間與無電流間隔時間之和稱為自動重合閘時間。
金屬短接時間系指斷路器重合閘操作后,觸頭閉合到第二次觸頭分開所需用的時間。
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