140DAO85300
140DAO85300140DAO85300
為了確保安全可靠,電氣部件的額定工作電流一般應(yīng)大于2倍所需的最大負(fù)荷電流;此外,在設(shè)計(jì)、選擇電氣部件時(shí),還要考慮到以后用電負(fù)荷增加的可能性,為以后需求留有余量;下表給出了幾種常見住宅的計(jì)算負(fù)荷及主開關(guān)的額定電流:
●業(yè)從事(DCS系統(tǒng))(機(jī)器人系統(tǒng))(大型伺服控制系統(tǒng))模塊 備件銷售廈門[泰尼電氣有
廈門泰尼備件解決方案銷售中心:
轉(zhuǎn)子流量計(jì)在工業(yè)生產(chǎn)過程中應(yīng)用較廣,可以測量多種介質(zhì)的流量,特別適用于中小管徑和低雷諾數(shù)的中小流量測量。轉(zhuǎn)子流量計(jì)結(jié)構(gòu)簡單,靈敏度高,量程比寬(10:1),壓力損失小且恒定,對直管段的要求不高,刻度近似線性,價(jià)格便宜,使用維護(hù)簡便。但儀表受被測介質(zhì)密度、粘度、溫度、壓力等因素的影響,其精度一般在1.5級左右。
空氣開關(guān)與漏電開關(guān)的區(qū)別
空氣開關(guān)是零線和火線起作用,當(dāng)兩線間電流太大就會(huì)自動(dòng)跳閘,作用和保險(xiǎn)絲一樣。漏電保護(hù)器俗稱漏電開關(guān),漏電保護(hù)器是火線起作用,如果人接觸火線,那么通過人體和大地構(gòu)成回路,有額外的電流沒有通過零線,里面的電磁裝置會(huì)自動(dòng)觸發(fā),也會(huì)跳閘,馬上斷電保護(hù)人體。這兩個(gè)裝置都是用的電磁原理,其間還包括放大電路。但必須注意,通常的漏電保護(hù)開關(guān)或漏電保護(hù)器只適用于工頻電源,對其它電源,如直流電源、高頻電源是不適用的,千萬不能亂用。
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