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行動(dòng)計(jì)劃》指出，當(dāng)前，我國(guó)經(jīng)濟(jì)已由高速增長(zhǎng)階段轉(zhuǎn)向高發(fā)展階段。在近十年的機(jī)電產(chǎn)品再制造試點(diǎn)示范、產(chǎn)品認(rèn)定、技術(shù)推廣、建設(shè)等工作基礎(chǔ)上，亟待進(jìn)一步聚焦具有重要戰(zhàn)略作用和巨大經(jīng)濟(jì)帶動(dòng)潛力的關(guān)鍵裝備，開展以高技術(shù)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(dòng)深度自動(dòng)化無(wú)損拆解、柔性智能成形加工、智能無(wú)損檢測(cè)評(píng)估等智能再制造共性技術(shù)和專用裝備研發(fā)應(yīng)用與產(chǎn)業(yè)化推廣。推進(jìn)智能再制造，有利于帶動(dòng)綠色制造技術(shù)不斷突破，有利于重大裝備運(yùn)行保障能力，有利于推動(dòng)實(shí)現(xiàn)綠色增長(zhǎng)。《行動(dòng)計(jì)劃》提出，到2020年，突破一批制約我國(guó)智能再制造發(fā)展的拆解、檢測(cè)、成形加工等關(guān)鍵共性技術(shù)，智能檢測(cè)、成形加工技術(shù)達(dá)到先進(jìn)水平；發(fā)布50項(xiàng)智能再制造、技術(shù)、裝備及評(píng)價(jià)等；初步建立可推廣的再制造產(chǎn)品應(yīng)用市場(chǎng)化機(jī)制；推動(dòng)建立100家智能再制造示范企業(yè)、技術(shù)研發(fā)中心、服務(wù)企業(yè)、信息服務(wù)平臺(tái)、產(chǎn)業(yè)集聚區(qū)等，帶動(dòng)我國(guó)再制造產(chǎn)業(yè)規(guī)模達(dá)到2000億元。
長(zhǎng)延時(shí)過(guò)電流脫扣器整定電流應(yīng)大于線路中計(jì)算電流
（4-10-9）
式中 ——過(guò)電流脫扣器的長(zhǎng)延時(shí)動(dòng)作整定電
流值，A；
——可靠系數(shù)，一般取1.1；
——線路的計(jì)算電流，單臺(tái)電動(dòng)機(jī)是指
電動(dòng)機(jī)的額定電流，A。
10.5 低壓斷路器
校驗(yàn)一：長(zhǎng)延時(shí)過(guò)電流脫扣器在配電線路過(guò)載時(shí)的可靠性。如對(duì)電動(dòng)機(jī)進(jìn)行保護(hù)，則電動(dòng)機(jī)在過(guò)載 20％時(shí)應(yīng)使保護(hù)裝置動(dòng)作；
校驗(yàn)二：在配電線路出現(xiàn)尖峰負(fù)荷時(shí)或在電動(dòng)機(jī)起動(dòng)時(shí)，長(zhǎng)延時(shí)過(guò)電流脫扣器不誤動(dòng)。脫扣器在3倍整定電流值下的可返回時(shí)間，取決于線路中尖峰電流的持續(xù)時(shí)間，也就是線路中大容量的異步電動(dòng)機(jī)直接起動(dòng)的持續(xù)時(shí)間。
一般情況下，電動(dòng)機(jī)的輕載起動(dòng)時(shí)間不超過(guò)2.5～4s，電動(dòng)機(jī)滿載起動(dòng)時(shí)間不超過(guò)6～8s，個(gè)別電動(dòng)機(jī)重載起動(dòng)時(shí)間達(dá)15s。返回時(shí)間越小，說(shuō)明線路電流大于長(zhǎng)延時(shí)脫扣器整定電流值的倍數(shù)越高，保護(hù)裝置的動(dòng)作越快。
10.5 低壓斷路器
（5）分?jǐn)嗄芰?br />
1）斷路器額定短路分?jǐn)嗄芰?yīng)大于線路中大短路電流。
2）斷路器的額定極限短路分?jǐn)嗄芰?yīng)大于斷路器額定運(yùn)行短路分?jǐn)嗄芰Γ▽?duì)于直流電流線路，兩者的數(shù)值相同）。分?jǐn)嗄芰κ侵傅蛪簲嗦菲髟谝?guī)定的試驗(yàn)（如電壓、頻率、線路其它參數(shù)等）條件下，能夠接通成切斷短路電流的數(shù)值。分?jǐn)?/p>
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