1336-T-SP5A現(xiàn)貨
產(chǎn)品廣泛應(yīng)用領(lǐng)域
【玻璃生產(chǎn)及加工行業(yè)】 【化工及鹽化工廠】 【冶金-煉鐵高爐系統(tǒng)】
【水利水電廠監(jiān)控系統(tǒng)】 【汽車制造行行業(yè)】 【鋼鐵工程-鍋爐行業(yè)】
【水泥制品及生產(chǎn)制造】 【電力及水利行業(yè)】 【電力-電氣化水系統(tǒng)】
【中央空調(diào)及樓宇監(jiān)控】 【供水及水處理業(yè)】 【鐵路運(yùn)輸-裝卸行業(yè)】
【電站及小水電控制業(yè)】 【造紙及印刷行業(yè)】 【電力-除灰除渣系統(tǒng)】
式中 ——瞬時(shí)或短時(shí)過電流脫扣器整定電流值,A;
——可靠系數(shù),對(duì)動(dòng)作時(shí)間大于0.02s的斷路器,K
取1.35,對(duì)動(dòng)作時(shí)間小于0.02s的斷路器K取
1.7~2.0;
——電動(dòng)機(jī)的起動(dòng)電流,A。
10.5 低壓斷路器
2)當(dāng)配電線路不考慮電動(dòng)機(jī)的起動(dòng)電流時(shí),按下式計(jì)算整定值
(4-10-8)
式中 ——配電線路的尖峰電流,A;
——可靠系數(shù),一般取1.35。
3)當(dāng)配電線路考慮電動(dòng)機(jī)的起動(dòng)電流時(shí),按下式計(jì)算整定值
(4-10-9)
式中 ——正常工作電流和可能出現(xiàn)的自起動(dòng)電機(jī)
的起動(dòng)電流的總和,A。
10.5 低壓斷路器
(3)短時(shí)過電流脫扣器的整定電流
確定本級(jí)斷路器短延時(shí)過電流脫扣器動(dòng)作電流的整定,應(yīng)與下一級(jí)開關(guān)整定電流選擇性配合。本級(jí)動(dòng)作整定電流應(yīng)大于或等于下一級(jí)低壓斷路器短延時(shí)或瞬時(shí)動(dòng)作整定值的1.2倍。若下一級(jí)有多條分支線,則取各分支路低壓斷路器中大整定值的1.2倍。
10.5 低壓斷路器
(4)長延時(shí)過電流脫扣器整定電流
APC Low Voltage RM Metered PDU 120v AP7862 New
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1336-T-SP5A
Alfa Laval SattCon ODP.8, Used, ODP8SATTCON, Fast Shipping
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1336-T-SP5A
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1336-T-SP5A
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