140DAI45300

三三相異步電動(dòng)機(jī)堵轉(zhuǎn)試驗(yàn)試驗(yàn)過程
　　三相異步電動(dòng)機(jī)堵轉(zhuǎn)試驗(yàn)試驗(yàn)時(shí)，施于定子繞組的電壓盡可能從不低于 0.9倍額定電壓開始，然后逐步降低電壓至定子電流接近額定電流為止，其間共測取5~7點(diǎn)讀數(shù)。每點(diǎn)應(yīng)同時(shí)測取下列數(shù)值 :Uk、Ik、Tk、Pk及繞組溫度。每點(diǎn)讀數(shù)時(shí)，通電持續(xù)時(shí)間應(yīng)不超過10s，以免繞組過熱。

●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

　　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。

四測量電機(jī)堵轉(zhuǎn)電流的意義
　　堵轉(zhuǎn)電流是電機(jī)運(yùn)行時(shí)發(fā)生堵轉(zhuǎn)故障及電機(jī)啟動(dòng)瞬間達(dá)到的電流值，設(shè)備使用單位使用時(shí)主要需要考慮電源容量能否滿足電機(jī)的啟動(dòng)要求，進(jìn)而選擇電機(jī)的啟動(dòng)方式，還有電機(jī)的保護(hù)用的斷路器的選擇也需要考慮這個(gè)參數(shù)，選擇不正確會(huì)造成電機(jī)啟動(dòng)時(shí)，斷路器保護(hù)跳閘等等。

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