140DAI74000
140DAI74000
140DAI74000三相異步電動(dòng)機(jī)效率確定根據(jù)《GB/T1032-2012三相異步電動(dòng)機(jī)試驗(yàn)方法》有A法、B法、C法、E法或E1法、F法或F1法、G法或G1法、H法這幾種試驗(yàn)方法,不同的試驗(yàn)方法適應(yīng)不同的異步電動(dòng)機(jī),不同試驗(yàn)方法效率測(cè)量的準(zhǔn)確性也不一樣。
一三相異步電動(dòng)機(jī)效率確定之A法——輸入-輸出法
A法適用于不大于1KW的異步電動(dòng)機(jī),A法的特點(diǎn)時(shí)由測(cè)得的輸入功率與輸出功率之比就可知電機(jī)的效率。此直觀效率值與測(cè)試時(shí)的冷卻介質(zhì)溫度值有關(guān)。為提高測(cè)試結(jié)果的準(zhǔn)確性和便于分析比較,需用修正到基準(zhǔn)冷卻介質(zhì)溫度(25度)的輸出功率和輸入功率,計(jì)算電機(jī)的效率。
二三相異步電動(dòng)機(jī)效率確定之B法——測(cè)量輸入和輸出功率的損耗分析法
●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(xiāo)售廈門(mén)[泰尼電氣有
廈門(mén)泰尼備件解決方案銷(xiāo)售中心:
轉(zhuǎn)子流量計(jì)在工業(yè)生產(chǎn)過(guò)程中應(yīng)用較廣,可以測(cè)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(cè)量。轉(zhuǎn)子流量計(jì)結(jié)構(gòu)簡(jiǎn)單,靈敏度高,量程比寬(10:1),壓力損失小且恒定,對(duì)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(jiǎn)便。但儀表受被測(cè)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(jí)左右。
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